Shank tendon stretching device and massage chair

By designing a calf stretching device and using linear and swing drive devices to stretch the calf, the problem of the lack of tensioning function of existing equipment is solved, effective relief and safety monitoring of the fascia are achieved, and consumers' user experience is improved.

CN223220688UActive Publication Date: 2025-08-15XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO LTD +1
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Patent Information

Application Number
CN202421797647.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-29
Publication Date
2025-08-15
Estimated Expiration
2034-07-29

AI Technical Summary

Technical Problem

The existing calf massage equipment lacks the tension function, which cannot effectively relieve consumers' fatigue and soreness, and cannot meet consumers' experience needs.

Method used

A calf stretching device is designed, including a fixing frame, a slidable upper calf and a lower calf. The upper calf and lower calf are driven to move in the opposite direction by a linear drive device and a swing drive device, and the calf fascia is stretched through the swing of the foot, and a distance and angle monitoring device are equipped to ensure safety.

Benefits of technology

Effective stretching of the calf fascia is achieved, which relieves fatigue and soreness, improves sub-health status, and ensures safety and stable operation of the equipment through monitoring devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

The crus tendon stretching device comprises a fixing frame, the fixing frame is provided with an upper crus part and a lower crus part which can slide along the fixing frame, and driving devices are arranged between the upper crus part and the fixing frame and between the lower crus part and the fixing frame respectively and used for driving the upper crus part and the lower crus part to move in the opposite directions respectively, so that the fascia of the crus is stretched. Besides, the lower shank part comprises a seat body and a foot part rotationally connected to the seat body, and a swing driving device is arranged in the lower shank part and used for driving the foot part to swing relative to the seat body so as to swing the foot part of the user, so that the fascia on the front side of the shank is stretched, the fatigue and soreness of the consumer are relieved, and the sub-health state of the consumer is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of massage chairs, in particular to a calf stretching device and a massage chair. Background Art

[0002] Currently, demands for functional calf massage are increasing. Within the massage industry, it's widely believed that stretching can significantly alleviate fatigue, soreness, and improve sub-health conditions. The "jin" in stretching refers to fascia, a type of connective tissue composed of sticky collagen.

[0003] In daily life, prolonged sitting can cause muscles to remain in a static state, while fascia contract. This can lead to muscle pain over time. Therefore, calf massagers with stretching functions are poised to become the next mainstream massage device. However, existing calf massagers offer only conventional functions, including sole rubbing and leg muscle massage. These lack novelty and fail to satisfy consumers' needs and attract their attention. Utility Model Content

[0004] In view of the shortcomings of the background technology, the purpose of the present invention is to provide a calf stretching device and a massage chair.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A calf stretching device includes a fixed frame, the fixed frame is provided with an upper calf portion and a lower calf portion that can slide along the fixed frame, the lower calf portion includes a seat body and a foot portion rotatably connected to the seat body, a swing drive device is provided in the lower calf portion for driving the foot to swing relative to the seat body; linear drive devices are respectively provided between the upper calf portion and the lower calf portion and the fixed frame, respectively for driving the upper calf portion and the lower calf portion to move in opposite directions.

[0007] Furthermore, the linear drive device includes a linear drive motor, a screw is provided at the output end of the linear drive motor, and the linear drive device also includes a nut that cooperates with the screw thread. One of the linear drive motor or the nut is provided on the fixed frame, and the other is provided on the upper calf and the lower calf respectively.

[0008] Furthermore, a distance monitoring device is provided between the upper calf and the lower calf, respectively, for recording the moving distance of the upper calf and the lower calf. The distance monitoring device includes a distance counting box and a distance counting plate movably provided in the distance counting box. One of the distance counting box or the distance counting plate is provided on the fixed frame, and the other is provided on the upper calf and the lower calf, respectively.

[0009] Furthermore, connecting plates are provided on both sides of the base body, the foot is located between the two connecting plates, and a gap is provided between the two sides of the foot and the connecting plates, a connecting shaft is provided in the gap, one end of the connecting shaft is fixedly connected to the connecting plate, and the other end of the connecting shaft is pivotally connected to the foot; a first tooth portion is provided on the outer fixed sleeve of the connecting shaft, the foot is provided with a rotating shaft, the output end of the swing drive device is transmission-connected to the rotating shaft, and second tooth portions adapted to the first tooth portion are provided at both ends of the rotating shaft.

[0010] Furthermore, the connecting shaft is provided with a threading hole for threading a cable along its axial direction.

[0011] Furthermore, it also includes an angle detection device, which includes a code disk and an angle counting box. The code disk is mounted outside the rotating shaft and rotates with the rotating shaft, and the angle counting box is arranged on the foot and swings with the foot.

[0012] Furthermore, it also includes a controller, which is electrically connected to the angle counting box and the two distance counting boxes for monitoring the moving distances of the upper calf and the lower calf respectively, and is used to receive the current moving distances of the upper calf and the lower calf and the swing angle of the foot, so that the moving distances of the upper calf and the lower calf and the swing angle of the foot do not exceed the corresponding preset values.

[0013] Furthermore, it also includes a chain, the two ends of which are respectively connected to the upper calf part and the lower calf part, and the chain is composed of multiple connecting blocks, and the connecting blocks are pivotally connected to each other so that the chain deforms in the same plane, and each connecting block is provided with a threading space for threading cables, and each threading space constitutes a threading channel.

[0014] Furthermore, the upper calf portion is provided with an upper guide rail, the lower calf portion is provided with a lower guide rail, and the fixing frame is provided with rollers adapted to the upper guide rail and the lower guide rail.

[0015] A massage chair includes a chair frame, and is characterized in that it also includes the calf stretching device as described above, and the fixing frame is pivotally connected to the chair frame.

[0016] The beneficial effects of the utility model are:

[0017] 1. The present invention provides a calf stretching device comprising a fixed frame having an upper calf portion and a lower calf portion that can slide along the fixed frame. Drive devices are respectively provided between the upper calf portion and the lower calf portion and the fixed frame, respectively for driving the upper calf portion and the lower calf portion in opposite directions, thereby stretching the calf fascia. Furthermore, the lower calf portion comprises a base and a foot portion rotatably connected to the base portion. A swing drive device is provided within the lower calf portion for driving the foot portion to swing relative to the base portion, thereby swinging the user's foot and stretching the anterior calf fascia. This, in turn, relieves fatigue, soreness, and swelling, and improves the user's sub-health condition.

[0018] 2. The utility model proposes a calf stretching device, in which a distance monitoring device for recording the movement distance of the upper calf and the lower calf is respectively provided between the upper calf and the lower calf, and the lower calf is also provided with an angle monitoring device for monitoring the swing angle of the foot, so as to monitor the current stretching working status of the upper calf and the lower calf.

[0019] 3. The utility model proposes a calf stretching device, which includes a connecting shaft. The connecting shaft is provided with a threading hole for threading a cable along its axial direction, which facilitates the threading of the cable and ensures that it does not interfere with other components.

[0020] 4. The calf stretching device proposed in the present invention also includes a controller, which has preset limit movement distances of the upper calf and lower calf and limit swing angles of the foot. The controller controls the movement distances of the calf and lower calf and the swing angles of the foot to not exceed the corresponding limit values, thereby ensuring the personal safety of the user.

[0021] 5. The utility model proposes a calf stretching device, which also includes a chain. The chain is composed of a plurality of connecting blocks, and the connecting blocks are pivotally connected to each other so that the chain deforms in the same plane, and each connecting block is provided with a threading space for threading cables. Each threading space constitutes a threading channel, so that when the upper calf part and the lower calf part move, the cables can be ensured to be deformed in a preset plane, and the cables can be ensured not to interfere with the components, thereby ensuring the stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the initial state of a calf stretching device of the present invention;

[0024] Figure 2 This is a schematic diagram of the tensile limit state of a calf stretching device of the present invention;

[0025] Figure 3 This is a schematic diagram of the upper limit of the foot of a calf stretching device of the present invention;

[0026] Figure 4 This is a schematic diagram of the lower limit of the foot of a calf stretching device of the present invention;

[0027] Figure 5 This is an exploded view of a calf stretching device according to the present invention;

[0028] Figure 6 This is a schematic diagram of a fixing frame of a calf stretching device according to the present invention;

[0029] Figure 7 This is a schematic diagram of the lower calf portion of a calf stretching device according to the present invention;

[0030] Figure 8 This is a side view of the lower calf portion of a calf stretching device according to the present invention;

[0031] Figure 9 This is a top view of the lower calf portion of a calf stretching device according to the present invention;

[0032] Figure 10 This is a schematic diagram of the back of a calf stretching device of the present invention in its initial state;

[0033] Figure 11 This is a schematic diagram of the back of a calf stretching device according to the present invention at the stretching limit position;

[0034] In the figure, 10, fixed frame; 101, first guide wheel; 102, second guide wheel; 20, upper calf; 201, upper guide rail; 30, lower calf; 301, connecting plate; 302, foot; 303, connecting shaft; 3031, threading hole; 304, rotating shaft; 305, lower guide rail; 401, first screw; 402, first nut; 501, second screw; 502, second nut; 601, upper counting plate; 602, upper counting box; 701, lower counting plate; 702, lower counting box; 801, first tooth portion; 802, second tooth portion; 901, code disk; 902, angle counting box; 100, chain; 110, cable. DETAILED DESCRIPTION

[0035] The following combination Figure 1-11 The utility model is described in detail.

[0036] The present invention provides a calf stretching device, comprising a fixed frame 10, which is provided with an upper calf portion 20 and a lower calf portion 30 that can slide along the fixed frame 10. Linear drive devices are respectively provided between the upper calf portion 20 and the lower calf portion 30 and the fixed frame 10, respectively for driving the upper calf portion 20 and the lower calf portion 30 to move in opposite directions, thereby stretching the calf fascia. Furthermore, the lower calf portion 30 includes a base and a foot portion 302 rotatably connected to the base. A swing drive device is provided within the lower calf portion 30 for driving the foot portion 302 to swing relative to the base, thereby swinging the user's foot 302, thereby stretching the anterior calf fascia, thereby alleviating fatigue and soreness in the consumer and improving the consumer's sub-health condition.

[0037] In this embodiment, the linear drive device includes a linear drive motor, the output end of the linear drive motor is provided with a screw, the linear drive device also includes a nut threadedly engaged with the screw, one of the drive motor or the nut is provided on the fixed frame 10, and the other is provided on the upper calf portion 20 and the lower calf portion 30, thereby achieving the rise or fall of the upper calf portion 20 and the lower calf portion 30 through thread transmission. Specifically, the linear drive device includes a first drive device and a second drive device, the first drive device includes a first drive motor and a first nut 402, the first drive motor is provided on the upper calf portion 20, the output end of the first drive motor is provided with a first screw 401, the first nut 402 is fixedly provided on the fixed frame 10, and the first screw 401 is threadedly engaged with the first screw; the second drive device includes a second drive motor and a second nut 502, the second drive motor is provided on the lower calf portion 30, the output end of the second drive motor is provided with a second screw 501, the second nut 502 is fixedly provided on the fixed frame 10, and the second screw 501 is threadedly engaged with the second screw.

[0038] In this embodiment, a distance monitoring device is provided between the upper calf portion 20 and the lower calf portion 30, respectively, for recording the travel distance of the upper calf portion 20 and the lower calf portion 30. The distance monitoring device includes a distance counting box and a distance counting plate movably provided through the distance counting box. One of the distance counting box or the distance counting plate is provided on the fixed frame 10, and the other is provided on the upper calf portion 20 and the lower calf portion 30, respectively. The counting plate is provided with a plurality of holes. During the movement of the upper calf portion 20 and the lower calf portion 30, the counting box counts the number of holes passed through during the movement, thereby calculating the displacement distance. It is understood that this counting principle is a commonly used technical solution for those skilled in the art and will not be described in detail.

[0039] In this embodiment, the distance monitoring device includes an upper monitoring device and a lower monitoring device. The upper monitoring device is used to monitor the movement distance of the upper calf portion 20, and the lower monitoring device is used to monitor the movement distance of the lower calf portion 30. The upper monitoring device includes an upper counting plate 601 and an upper counting box 602. The upper counting plate 601 is fixed to the fixed frame 10, and the upper counting box 602 is fixed to the upper calf portion 20. The lower monitoring device includes a lower counting plate 701 and a lower counting box 702. The lower counting plate 701 is fixed to the lower calf portion 30, and the upper counting box 602 is fixed to the fixed frame 10.

[0040] In this embodiment, connecting plates 301 are provided on both sides of the base, and a foot 302 is positioned between the two connecting plates 301. A gap is provided between the two sides of the foot 302 and the connecting plates 301. A connecting shaft 303 is provided in the gap. One end of the connecting shaft 303 is fixedly connected to the connecting plate 301, and the other end of the connecting shaft 303 is pivotally connected to the foot 302. The connecting shaft 303 has a threading hole 3031 along its axial direction for threading the cable 110, which facilitates the threading of the cable 110 and ensures that it does not interfere with other components. Furthermore, a first tooth portion 801 is fixedly sleeved on the outside of the connecting shaft 303, and a rotating shaft 304 is provided on the foot 302. The output end of the swing drive device is transmission-connected to the rotating shaft 304. The rotating shaft 304 has second tooth portions 802 at both ends that match the first tooth portions 801. The rotating shaft 304 is driven to rotate by the swing driving device. Since the first tooth portion 801 is fixed to the connecting shaft 303 , the second tooth portion 802 moves around the first tooth portion 801 , thereby causing the foot portion 302 to swing around the connecting shaft 303 .

[0041] This embodiment also includes an angle detection device, which includes a code disk 901 and an angle counting box 902. The code disk 901 is mounted outside the rotating shaft 304 and rotates with the rotating shaft 304. The angle counting box 902 is mounted on the foot 302 and swings with the foot 302. The counting principle of the angle detection device is the same as that of encoders commonly used in the prior art and will not be repeated here.

[0042] In this embodiment, a controller (not shown) is also included. The controller is electrically connected to the angle counting box 902 and two distance counting boxes for monitoring the moving distances of the upper calf 20 and the lower calf 30, respectively, and is used to receive the current moving distances of the upper calf 20 and the lower calf 30 and the swing angle of the foot 302, so that the moving distances of the upper calf 20 and the lower calf 30 and the swing angle of the foot 302 do not exceed the corresponding preset values, thereby ensuring personal safety.

[0043] In this embodiment, a chain 100 is also included, and both ends of the chain 100 are respectively connected to the upper calf part 20 and the lower calf part 30. The chain 100 consists of a plurality of connecting blocks, and the connecting blocks are pivotally connected to each other so that the chain 100 deforms within the same plane, and each connecting block is provided with a threading space for threading the cable 110. Each threading space constitutes a threading channel, so that when the upper calf part 20 and the lower calf part 30 move, the cable 110 is ensured to deform within a preset plane, and the cable 110 is ensured not to interfere with components, thereby ensuring stable operation of the equipment.

[0044] In this embodiment, the upper calf portion 20 is provided with an upper guide rail 201, the lower calf portion 30 is provided with a lower guide rail 305, and the fixed frame 10 is provided with rollers adapted to fit the upper guide rail 201 and the lower guide rail 305. Specifically, a first guide wheel 101 is provided on the inner side of the fixed frame 10, and a second guide wheel 102 is provided on the outer side of the fixed frame 10. The upper guide rail 201 is slidably adapted to fit the first guide wheel 101, and the lower guide rail 305 is slidably adapted to fit the second guide wheel 102.

[0045] The present invention further provides a massage chair, comprising a chair frame (not shown), and the calf stretching device as described above, wherein the fixing frame 10 is pivotally connected to the chair frame.

[0046] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A calf stretching device, characterized in that: The invention comprises a fixing frame, wherein the fixing frame is provided with an upper calf portion and a lower calf portion which can slide along the fixing frame, the lower calf portion comprises a seat body and a foot portion rotatably connected to the seat body, and a swing driving device is provided in the lower calf portion for driving the foot to swing relative to the seat body; linear driving devices are respectively provided between the upper calf portion and the lower calf portion and the fixing frame, respectively for driving the upper calf portion and the lower calf portion to move in opposite directions.

2. A calf stretching device according to claim 1, characterized in that: The linear drive device includes a linear drive motor, a screw is provided at the output end of the linear drive motor, and the linear drive device also includes a nut that cooperates with the screw thread. One of the linear drive motor or the nut is provided on the fixed frame, and the other is provided on the upper calf and the lower calf respectively.

3. A calf stretching device according to claim 1, characterized in that: A distance monitoring device is provided between the upper calf and the lower calf, respectively, for recording the movement distance of the upper calf and the lower calf. The distance monitoring device includes a distance counting box and a distance counting plate movably arranged on the distance counting box. One of the distance counting box or the distance counting plate is arranged on the fixed frame, and the other is respectively arranged on the upper calf and the lower calf.

4. A calf stretching device as claimed in claim 3, characterized in that: Connecting plates are provided on both sides of the seat body, the foot is located between the two connecting plates, and a gap is provided between the two sides of the foot and the connecting plates, a connecting shaft is provided in the gap, one end of the connecting shaft is fixedly connected to the connecting plate, and the other end of the connecting shaft is pivotally connected to the foot; a first tooth portion is provided on the outer fixed sleeve of the connecting shaft, the foot is provided with a rotating shaft, the output end of the swing drive device is transmission-connected to the rotating shaft, and second tooth portions adapted to the first tooth portion are provided at both ends of the rotating shaft.

5. A calf stretching device as claimed in claim 4, characterized in that: The connecting shaft is provided with a threading hole for threading a cable along its axial direction.

6. The calf stretching device according to claim 4, characterized in that: It also includes an angle detection device, which includes a code disk and an angle counting box. The code disk is sleeved outside the rotating shaft and rotates with the rotating shaft. The angle counting box is arranged on the foot and swings with the foot.

7. A calf stretching device according to claim 6, characterized in that: It also includes a controller, which is electrically connected to the angle counting box and the two distance counting boxes for monitoring the moving distances of the upper calf and the lower calf respectively, and is used to receive the current moving distances of the upper calf and the lower calf and the swing angle of the foot, so that the moving distances of the upper calf and the lower calf and the swing angle of the foot do not exceed the corresponding preset values.

8. The calf stretching device according to claim 1, characterized in that: It also includes a chain, the two ends of which are respectively connected to the upper calf part and the lower calf part. The chain consists of a plurality of connecting blocks, and the connecting blocks are pivotally connected to each other so that the chain deforms in the same plane, and each connecting block is provided with a threading space for threading cables, and each threading space constitutes a threading channel.

9. The calf stretching device according to claim 1, characterized in that: The upper calf portion is provided with an upper guide rail, the lower calf portion is provided with a lower guide rail, and the fixing frame is provided with rollers adapted to the upper guide rail and the lower guide rail.

10. A massage chair, comprising a chair frame, characterized in that: It also includes the calf stretching device according to any one of claims 1 to 9, wherein the fixing frame is pivotally connected to the chair frame.