A chest expansion training device for extracorporeal rehabilitation

Abstract

The application discloses a chest expansion training device for extrathoracic rehabilitation and belongs to the field of extrathoracic rehabilitation. The device comprises a rack, a seat arranged outside the rack, two parallel control arms for user palm gripping and spreading training arranged above the seat, a resistance unit arranged between the rack and the control arms, a push rod motor fixedly installed at the middle part of the two control arms, a support plate fixed to the output end of the push rod motor, a spacing adjustment mechanism fixedly installed on the surface of the support plate, one longitudinal steering mechanism fixedly installed at each end of the spacing adjustment mechanism, a transverse steering mechanism movably installed at one end of the longitudinal steering mechanism, and a protection plate for buffering the impact force of the control arm impact fixedly installed outside the transverse steering mechanism. The device has the function of limiting the control arm losing supporting force and preventing the user from being injured by violent impact.

Description

Technical Field

[0001] This invention relates to the field of thoracic rehabilitation, and more specifically, to a chest expansion training device for thoracic rehabilitation. Background Technology

[0002] After completing treatment for some diseases, rehabilitation training is required. For example, when patients undergo postoperative rehabilitation training for pleurisy, they need to perform chest expansion rehabilitation training. Using a chest expansion training device to assist in chest expansion exercises can enhance cardiopulmonary function, relieve pressure on the cardiopulmonary blood vessels, and improve the blood supply capacity of the cardiopulmonary blood vessels, thereby improving cardiopulmonary function.

[0003] When performing chest expansion exercises on a chest expansion training device, users need to hold the device with both hands, arms at shoulder height, and pull it back until their arms are in a straight line with their body, then return to the starting position. However, when users experience hypoglycemia, excessive fatigue, or electrolyte imbalance, they may experience weakness. In this case, their arms may no longer be able to support the control arms on the device. The force generated by the resistance unit resetting will cause violent vibrations due to rapid movement, which can injure the hands holding the control arms. Furthermore, the large-scale rapid movement of the control arms can also create psychological pressure on the user, making it easy for them to perform improper movements. This could result in the control arms hitting the user's body, posing a significant safety hazard. Summary of the Invention

[0004] In view of the problem in the existing technology that users may become unable to support the control arm on the chest expansion training device due to their physical condition, and the control arm may injure the user due to rapid resetting, the purpose of this invention is to provide a chest expansion training device for external thoracic rehabilitation.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A chest expansion training device for external thoracic rehabilitation includes a frame with a seat on its exterior. Above the seat, two parallel user-operated control arms are positioned on the frame for gripping and extending the training arms. A resistance unit is located between the frame and the control arms. A push rod motor is fixedly mounted on the frame at the midpoint of the two control arms. A support plate is fixedly mounted to the output end of the push rod motor. A spacing adjustment mechanism is fixedly mounted on the surface of the support plate. A longitudinal steering mechanism is fixedly mounted at each end of the spacing adjustment mechanism. A lateral steering mechanism is movably mounted at one end of the longitudinal steering mechanism. A protective plate for buffering the impact force of the control arms is fixedly mounted on the exterior of the lateral steering mechanism. An assembly groove is formed on the surface of the protective plate facing the control arms. Several sets of buffer mechanisms are arranged inside the assembly groove. An elastic buffer pad is adhered to the outer wall of the assembly groove on the protective plate.

[0007] Optionally, the spacing adjustment mechanism includes a retaining plate fixed to a support plate. A rotatable adjusting rod is movably mounted in the inner cavity of the retaining plate via a bearing. The surface of the adjusting rod is provided with two equidistant threads arranged in opposite directions. A toothed groove is provided at the center of the adjusting rod. A drive gear meshes with the outside of the toothed groove. A drive motor is fixedly mounted in the middle of the drive gear. Movable grooves are provided at both ends of the retaining plate. A support rod passing through the movable groove is threaded to both ends of the adjusting rod.

[0008] Optionally, the longitudinal steering mechanism includes an assembly box fixed to one end of a support rod on the spacing adjustment mechanism. A first steering motor is fixed inside the assembly box. An adjustment block is fixedly installed at the output end of the first steering motor extending to the outside of the assembly box. A plurality of equidistant first positioning grooves are formed on the surface of the adjustment block. A plurality of first merging grooves corresponding to the first positioning grooves are formed on the surface of the first assembly box. A first guide rod is fixed inside the cavity of the first merging groove. A first shaping block that is inserted into the first positioning groove and limits the rotation of the adjustment block is movably installed at one end of the first guide rod. A first retaining spring is fixedly installed at one end of the first shaping block located inside the cavity of the first merging groove. The cavity of the adjustment block is installed with one end of the lateral steering mechanism.

[0009] Optionally, the lateral steering mechanism includes a second steering motor fixed in the inner cavity of the adjusting block. The output end of the second steering motor located outside the adjusting block is fixedly mounted with a mounting box. An adjusting motor is fixedly mounted in the inner cavity of the mounting box. The output end of the adjusting motor is fixed to one end of the protective plate. A rubber locking strip is provided between the protective plate and the mounting box to restrict the rotation of the protective plate. Several sets of equidistant second positioning grooves are opened at the bottom of the mounting box. A second merging groove is opened at the top of the adjusting block. A second guide rod is fixed in the inner cavity of the second merging groove. A second shaping block is movably installed at one end of the second guide rod, which is inserted into the second merging groove to limit the rotation of the mounting box. A second retaining spring is fixedly installed at one end of the second shaping block located in the inner cavity of the second merging groove.

[0010] Optionally, the buffer mechanism includes a slide groove formed in the inner wall of the assembly groove. Several sets of sliding rods are fixedly installed in the inner cavity of the slide groove. A support frame is movably installed on each set of sliding rods. A return spring is movably sleeved at one end of each set of sliding rods connected to the support frame. An elastic buffer ball is movably installed at the center position of the support frame, and the surface of the buffer ball protrudes outside the assembly groove.

[0011] Optionally, a vent hole is provided on the outer wall of each assembly slot on the protective plate. A whistle tube is fixed in the inner cavity of the vent hole. A ball bearing is movably installed in the inner cavity of the whistle tube. An exhaust hole is provided on the outer wall of the whistle tube. An air inlet is provided at one end of the whistle tube. An air bladder is fixedly installed at one end of the air inlet. A limit spring is fixedly installed in the inner cavity of the air bladder.

[0012] Optionally, several layers of buffer rings are fixedly installed on the inner wall of the assembly groove, and one end of the airbag is positioned close to one of the buffer rings.

[0013] Optionally, the frame is frictionally connected to one end of the tension rope on the resistance unit, and a transmission rod is fixedly installed in the middle of the drive wheel. One end of the transmission rod is movably installed on the surface of the frame through a bearing, and several sets of equidistant fan blades are fixedly installed on the surface of the drive wheel facing the seat.

[0014] Optionally, a friction component is fixedly installed at one end of the stretchable rope on the resistance unit.

[0015] Optionally, the friction assembly includes an assembly tube fixed to one end of the resistance unit, the assembly tube having an external threaded connection to a wear-resistant tube whose surface is in contact with the inner wall of the drive wheel, and a control wheel fixedly installed at the top end of the wear-resistant tube.

[0016] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0017] In the above solution, the protective plate and the buffer pad move synchronously on one side of the control arm. In the event of a loss of support by the user, the protective plate and the buffer pad will prevent the control arm from impacting and resetting due to the resistance unit. This avoids injury to the user due to impact from the control arm, reduces the vibration force caused by the impact, and prevents the control arm from moving rapidly over a wide range due to loss of support. At this time, the control arm can only move within the distance between the protective plate and the control arm, which will not put psychological pressure on the user and prevent injury caused by improper actions due to psychological pressure.

[0018] The buffer mechanism can further reduce the impact force when the control arm hits the protective plate, thus weakening the vibration generated by the collision and improving the overall protective strength of the protective plate.

[0019] The position of the protective plate is changed by the lateral steering mechanism in conjunction with the longitudinal steering mechanism. Then, under the control of the spacing adjustment mechanism, the user's sitting posture is standardized to ensure that the distance between the user's sides and the control arm is balanced, thus ensuring the user's correct operation.

[0020] By utilizing the impact and positional movement of the cushioning mechanism on the user's back, a back massage function is achieved, which can relieve the user's physical fatigue, improve the user's cardiopulmonary capacity, and benefit the user's health.

[0021] The compression of the buffer mechanism causes the airbag to blow air into the whistle tube, thereby emitting an alarm sound. This allows nearby personnel to be notified in time to check the user's condition when the control arm malfunctions, avoiding situations where rescue is delayed.

[0022] The reciprocating motion of the rope on the resistance unit drives the drive wheel to rotate, and the drive wheel uses fan blades to accelerate the surrounding airflow, which can then dissipate heat from the user's back, thus improving the user's comfort during exercise. Attached Figure Description

[0023] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic diagram of the side structure;

[0026] Figure 3 For the present invention Figure 1 Cross-sectional structural diagram of the center spacing adjustment mechanism;

[0027] Figure 4 For the present invention Figure 1 A cross-sectional schematic diagram of the connection between the longitudinal steering mechanism and the lateral steering mechanism;

[0028] Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle;

[0029] Figure 6 For the present invention Figure 1 A schematic diagram of a partial cross-section of the central protective plate;

[0030] Figure 7 For the present invention Figure 1 A partial structural diagram of the buffer mechanism;

[0031] Figure 8 This is a schematic cross-sectional view of the whistle tube of the present invention mounted on a protective plate;

[0032] Figure 9 For the present invention Figure 1 A schematic diagram of the cross-section of the back of the friction assembly.

[0033] [Figure Labels]

[0034] 1. Frame; 2. Seat; 3. Control arm; 4. Resistance unit; 5. Support plate;

[0035] 6. Spacing adjustment mechanism; 601. Fixing plate; 602. Adjusting rod; 603. Gear groove; 604. Drive gear; 605. Drive motor; 606. Movable groove; 607. Support rod;

[0036] 7. Longitudinal steering mechanism; 701. Assembly box; 702. First steering motor; 703. Adjusting block; 704. First positioning groove; 705. First merging groove; 706. First guide rod; 707. First shaping block; 708. First retaining spring;

[0037] 8. Lateral steering mechanism; 801. Second steering motor; 802. Second positioning groove; 803. Second merging groove; 804. Second guide rod; 805. Second shaping block; 806. Second retaining spring; 807. Mounting box; 808. Adjusting motor; 809. Locking strip;

[0038] 9. Protective plate; 10. Assembly slot;

[0039] 11. Buffer mechanism; 1101. Slide groove; 1102. Sliding rod; 1103. Support frame; 1104. Return spring; 1105. Buffer ball;

[0040] 12. Buffer pad; 13. Vent hole; 14. Whistle tube; 15. Ball bearing; 16. Exhaust hole; 17. Intake hole; 18. Airbag; 19. Limiting spring; 20. Buffer ring; 21. Drive wheel; 22. Transmission rod; 23. Fan blades;

[0041] 24. Friction assembly; 2401. Assembly tube; 2402. Wear-resistant tube; 2403. Control wheel;

[0042] 25. Push rod motor.

[0043] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0045] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0046] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0047] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0048] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0049] like Figures 1 to 9 As shown, the present invention provides a chest expansion training device for external thoracic rehabilitation.

[0050] Example 1:

[0051] The device includes a frame 1, with a seat 2 mounted on the outside of the frame 1. Above the seat 2, the frame 1 has two parallel control arms 3 for users to grip and extend for training. A resistance unit 4 is located between the frame 1 and the control arms 3. When performing chest expansion exercises, the user sits on the seat 2, straightens their body, and grips one control arm 3 on each side. The user then pulls the control arms 3 to move them to the sides, increasing the distance between the two control arms 3. During this movement, the resistance unit 4 on the frame 1 is stretched, generating tension. The user then grips the control arms 3 to return to the original position. Repeating this exercise achieves the effect of chest expansion training.

[0052] The frame 1 is fixedly installed with a push rod motor 25 at the middle position of the two control arms 3. The output end of the push rod motor 25 is fixed with a support plate 5. The surface of the support plate 5 is fixedly installed with a spacing adjustment mechanism 6. The spacing adjustment mechanism 6 is adjusted synchronously with the spacing between the two sets of control arms 3. When the spacing between the two sets of control arms 3 increases, the length of the spacing adjustment mechanism 6 also increases. When the spacing between the two sets of control arms 3 decreases, the length of the spacing adjustment mechanism 6 decreases.

[0053] The spacing adjustment mechanism 6 includes a retaining plate 601 fixed on a support plate 5. A rotatable adjusting rod 602 is movably mounted in the inner cavity of the retaining plate 601 via a bearing. The surface of the adjusting rod 602 is provided with two equidistant threads arranged in opposite directions. A toothed groove 603 is provided at the center of the adjusting rod 602. A drive gear 604 meshes with the outside of the toothed groove 603. A drive motor 605 is fixedly mounted in the middle of the drive gear 604. The drive motor 605 is an asynchronous motor. Movable grooves 606 are provided at both ends of the retaining plate 601. A support rod 607 passing through the movable groove 606 is threaded to both ends of the adjusting rod 602. The outer side of the movable groove 606 and the support rod 607 is rectangular, so that the movable groove 606 can prevent the support rod 607 from rotating.

[0054] When the power is turned on, the drive motor 605 rotates clockwise. At this time, the drive motor 605 will transmit power through the meshing of the drive gear 604 and the tooth groove 603 on the adjusting rod 602. In this way, the adjusting rod 602 can rotate clockwise synchronously. At this time, the support rods 607 at both ends of the adjusting rod 602 will extend to both sides of the outer side of the fixed plate 601 with the cooperation of the movable groove 606, thereby increasing the length of the entire spacing adjustment mechanism 6.

[0055] When the drive motor 605 rotates counterclockwise, the adjusting rod 602 will rotate counterclockwise simultaneously. In this way, the support rods 607 at both ends of the adjusting rod 602 will retract and move into the inner cavity of the fixed plate 601 with the cooperation of the movable groove 606, thus realizing the reduction of the length value of the spacing adjustment mechanism 6.

[0056] The spacing adjustment mechanism 6 has a longitudinal steering mechanism 7 fixedly installed at both ends, and a transverse steering mechanism 8 is movably installed at one end of the longitudinal steering mechanism 7. The transverse steering mechanism 8 is used to automatically follow the control arm 3 to move synchronously.

[0057] The lateral steering mechanism 8 includes a second steering motor 801 fixed in the inner cavity of the adjusting block 703. The second steering motor 801 is an asynchronous motor. The output end of the second steering motor 801 located outside the adjusting block 703 is fixedly mounted with a mounting box 807. An adjusting motor 808 is fixedly mounted in the inner cavity of the mounting box 807. The output end of the adjusting motor 808 is fixed to one end of the protective plate 9. A rubber locking strip 809 is provided between the protective plate 9 and the mounting box 807 to limit the rotation of the protective plate 9. Several sets of equidistant second positioning grooves 802 are opened at the bottom of the mounting box 807. A second merging groove 803 is opened at the top of the adjusting block 703. A second guide rod 804 is fixed in the inner cavity of the second merging groove 803. A second shaping block 805 is movably installed at one end of the second guide rod 804, which is inserted into the second merging groove 803 to fix the rotation of the mounting box 807. A second retaining spring 806 is fixedly installed at one end of the second shaping block 805 located in the inner cavity of the second merging groove 803.

[0058] The lateral steering mechanism 8 is externally fixedly equipped with a protective plate 9 for buffering the impact force of the control arm 3. The protective plate 9 has an assembly groove 10 on its surface facing the control arm 3. An elastic buffer pad 12 is adhered to the outer wall of the protective plate 9 with the assembly groove 10. The buffer pad 12 can be made of rubber.

[0059] The workflow is as follows:

[0060] Step 1: When the user sits on seat 2 and holds control arm 3 to perform chest expansion exercises, the two control arms 3 are at their minimum distance. The distance adjustment mechanism 6 maintains the minimum distance synchronously. The buffer pad 12 on the surface of the protective plate 9 facing the surface of the control arm 3 maintains a certain distance from the control arm 3. As the user pulls the control arm 3 to move, the distance adjustment mechanism 6 moves synchronously with the user. At this time, the drive motor 605 inside the distance adjustment mechanism 6 drives clockwise, which drives the adjustment rod 602 to rotate clockwise. At this time, the support rods 607 at both ends of the adjustment rod 602 will extend outward to the fixed plate 601, thereby increasing the length of the distance adjustment mechanism 6. At this time, the distance adjustment mechanism 6 will also drive the longitudinal steering mechanism 7 and the lateral steering mechanism 8 to drive the protective plate 9 to move synchronously with the increased distance.

[0061] Step 2: The lateral steering mechanism 8 will also operate synchronously with the spacing adjustment mechanism 6. At this time, the second steering motor 801 will be started to drive clockwise. The second steering motor 801 will drive the mounting box 807 to turn. At this time, the mounting box 807 will drive the protective plate 9 to rotate synchronously through the connection between the adjusting motor 808 and the protective plate 9. The movement angle will change in the same way as the movement angle of the control arm 3. In this way, the control arm 3 and the surface of the buffer pad 12 on the surface of the protective plate 9 will always maintain a certain distance and will not make direct contact between the two. At the same time, after the control arm 3 loses its support, it will only move a short distance within the spacing range between the control arm 3 and the protective plate 9, which will not bring too much psychological pressure to the user.

[0062] Step 3: When the user experiences a sudden loss of strength, their arm can no longer support the control arm 3. At this time, the control arm 3 will be rapidly moved towards the user's location by the reset function of the resistance unit 4. During the rapid movement of the control arm 3, the spacing adjustment mechanism 6 and the lateral steering mechanism 8 are in a stopped state. At this time, the surface of the control arm 3 will directly impact the buffer pad 12 on the surface of the protective plate 9. The buffer pad 12 will then cushion the impact force of the control arm 3, and the protective plate 9 will block the control arm 3, preventing it from further impacting and moving towards the sides of the user's body. This achieves the protection of the user's body. The control arm 3 will also protect the user's arm due to the short distance and small vibration force from impacting the buffer pad 12 on the protective plate 9, avoiding excessive vibration that could injure the user's hand. At the same time, the control arm 3 will only move within a small range, avoiding psychological pressure on the user and preventing the user from making improper movements due to psychological fear and coming into contact with the rapidly moving control arm 3, which could cause injury.

[0063] Example 2 further reduces the impact force generated by the impact of the control arm 3;

[0064] The assembly groove 10 is provided with several sets of buffer mechanisms 11. The buffer mechanisms 11 are used to further enhance the impact resistance of the protective plate 9. The buffer mechanism 11 includes a slide groove 1101 opened in the inner wall of the assembly groove 10. Several sets of sliding rods 1102 are fixedly installed in the inner cavity of the slide groove 1101. A support frame 1103 is movably installed on each set of sliding rods 1102. A return spring 1104 is movably sleeved at one end of each set of sliding rods 1102 connected to the support frame 1103. An elastic buffer ball 1105 is movably installed at the center position of the support frame 1103. The buffer ball 1105 is made of rubber and its surface protrudes outside the assembly groove 10.

[0065] The inner wall of the assembly groove 10 is fixedly installed with several layers of buffer rings 20. The buffer rings 20 are made of elastic rubber material, and one end of the airbag 18 is positioned close to one of the buffer rings 20.

[0066] The workflow is as follows:

[0067] Step 1: When the control arm 3 impacts the surface of the protective plate 9, the surface of the control arm 3 will directly impact the surface of the buffer ball 1105. At this time, the rubber buffer ball 1105 will weaken the impact force generated by the control arm 3 for the first time.

[0068] Step 2: The impacted buffer ball 1105 can also transmit the impact force to the support frame 1103, causing the support frame 1103 to move into the assembly slot 10. At this time, the support frame 1103 will squeeze the return spring 1104 along the sliding rod 1102. Since the return spring 1104 will reciprocate after being squeezed, the impact force is weakened for the second time during the squeezing process. After the support frame 1103 loses the squeezing of the control arm 3, the return spring 1104 will automatically expand to its original length, thereby realizing the position restoration of the support frame 1103.

[0069] Step 3: As the support frame 1103 continues to move into the assembly slot 10, it will also come into contact with the buffer ring 20. The buffer ring 20 further buffers the resistance generated by the support frame 1103, thus completing the third impact weakening of the control arm 3.

[0070] Step 4: Finally, the control arm 3 will come into contact with the buffer pad 12 on the surface of the protective plate 9. At this time, the buffer pad 12, together with the protective plate 9, completes the final impact reduction. In this way, with the assistance of the buffer mechanism 11, the impact force of the control arm 3 is effectively reduced, the impact force on the user is further reduced, and the overall protection strength is greatly improved.

[0071] Example 3: This is used to limit the user's position on seat 2 to prevent the user from shifting position and being unable to use the chest expansion training device correctly;

[0072] The longitudinal steering mechanism 7 includes an assembly box 701 fixed to one end of a support rod 607 on the spacing adjustment mechanism 6. A first steering motor 702 is fixed inside the assembly box 701. The first steering motor 702 is an asynchronous motor. An adjustment block 703 is fixedly installed at the output end of the first steering motor 702 extending to the outside of the assembly box 701. Several sets of equidistant first positioning grooves 704 are formed on the surface of the adjustment block 703. Several sets of first merging grooves 705 corresponding to the first positioning grooves 704 are formed on the surface of the first assembly box 701. A first guide rod 706 is fixed inside the cavity of the first merging groove 705. A first shaping block 707 is movably installed at one end of the first guide rod 706 and inserted into the first positioning groove 704 to limit the rotation of the adjustment block 703. A first retaining spring 708 is fixedly installed at one end of the first shaping block 707 located inside the cavity of the first merging groove 705. The cavity of the adjustment block 703 is connected to one end of the transverse steering mechanism 8.

[0073] The workflow is as follows:

[0074] Step 1: Start the first steering motor 702 on the longitudinal steering mechanism 7 and drive it clockwise. The first steering motor 702 will drive the adjusting block 703 to rotate. At this time, the adjusting block 703 will drive the lateral steering mechanism 8 to move longitudinally, thus changing the lateral steering mechanism 8 from the lateral state to the vertical state (refer to the attached instruction manual). Figure 1(Structural positional relationship), at this time, the protective plate 9 on the lateral steering mechanism 8 is simultaneously changed to a vertical state. After the first steering motor 702 rotates, the first positioning groove 704 on the adjusting block 703 will merge with the first shaping block 707 on the first guide rod 706 inside the first merging groove 705. After merging, the position of the lateral steering mechanism 8 on the adjusting block 703 can be limited (when the first steering motor 702 is driven, the first shaping block 707 will disengage from the first positioning groove 704. At this time, the first shaping block 707 will also press the first retaining spring 708 along the first guide rod 706. Only after the first shaping block 707 moves back to the position of the first positioning groove 704 will the first retaining spring 708 pop out and the first shaping block 707 merge, thus realizing the function of limiting the rotation of the adjusting block 703. The second positioning groove 9 on the lateral steering mechanism 8... The merging of the molding block 805 with the second positioning groove 802 on the mounting box 807 is also used to limit the position of the protective plate 9 and prevent the protective plate 9 from rotating arbitrarily. When the second steering motor 801 drives the protective plate 9 to rotate, the second molding block 805 will also move into the second merging groove 803, and then press the second retaining spring 806 along the second guide rod 804. When it rotates to the position of the second positioning groove 802 again, the second molding block 805 can be inserted into the second positioning groove 802 to limit the position of the mounting box 807. At this time, the protective plate 9 at one end of the mounting box 807 will not rotate under the pressure of the locking strip 809. The locking strip 809 is made of rubber. Since the rubber material is elastic, it can increase the connection resistance between the mounting box 907 and the protective plate 9, thereby using the locking strip 809 to limit the position of the protective plate 9.

[0075] Step 2: When both protective plates 9 on both sides of the user are in a vertical position, start the push rod motor 25. The push rod motor 25 drives the spacing adjustment mechanism 6 on the support plate 5 to move towards the user's position. When the two protective plates 9 are moved to the position of the user's arms by the spacing adjustment mechanism 6 driven by the push rod motor 25, the longitudinal steering mechanism 7 and the lateral steering mechanism 8 are activated to rotate counterclockwise. This realizes the shrinking function of the spacing adjustment mechanism 6 on both sides (the specific working process is described in Example 1). At this time, the spacing adjustment mechanism 6 on both sides simultaneously drives the protective plates 9 to shrink through the longitudinal steering mechanism 7 and the lateral steering mechanism 8. Since the spacing adjustment mechanism 6 shrinks synchronously on both sides, the two protective plates 9 will move closer to the user's arms. At this time, the user can adjust his sitting posture according to the distance between the protective plates 9 on both sides of his arms to ensure that the position on both sides is balanced and that the user uses the chest expansion training device correctly.

[0076] Example 4: A massage function is implemented on the back after the user completes chest expansion training;

[0077] The workflow is as follows:

[0078] Step 1: After the user completes the chest expansion exercise, first activate the longitudinal steering mechanism 7 to move the lateral steering mechanism 8 to a vertical position. At this time, activate the adjustment motor 808 inside the mounting box 807 on the lateral steering mechanism 8. The adjustment motor 808 will drive the protective plate 9 to rotate. When the buffer ball 1105 on the surface of the buffer mechanism 11 on the protective plate 9 faces the direction of the user's back, turn off the adjustment motor 808.

[0079] Step 2: Activate the spacing adjustment mechanism 6 to move the protective plate 9 completely to the user's back position. The push rod motor 25 can then be activated again, allowing the surface of the buffer ball 1105 on the buffer mechanism 11 of the protective plate 9 to contact the user's back. This allows the buffer ball 1105 to gently bump against the user's back. Simultaneously, the repeated extension and retraction of the spacing adjustment mechanism 6 causes the buffer ball 1105 to roll on the user's back, achieving a massage effect that relieves fatigue, improves cardiovascular function, and benefits the user's health.

[0080] Example 5: This is used to trigger an alarm when the user suddenly loses the ability to support the control arm 3, alerting nearby personnel to check the user's condition.

[0081] Each of the protective plates 9 has a vent hole 13 on the outer wall corresponding to each assembly slot 10. A whistle tube 14 is fixed inside the vent hole 13. A ball bearing 15 is movably installed inside the whistle tube 14. An exhaust hole 16 is opened on the outer wall of the whistle tube 14. An air inlet 17 is opened at one end of the whistle tube 14. An airbag 18 is fixedly installed at one end of the air inlet 17. A limit spring 19 is fixedly installed inside the airbag 18. When the airbag 18 is squeezed, it will squeeze the limit spring 19 simultaneously. When the squeezing force is lost, the limit spring 19 will drive the airbag 18 to reset. During the reset process, the airbag 18 can be inflated simultaneously, which facilitates repeated use.

[0082] The work steps are as follows:

[0083] After the buffer mechanism 11 is impacted by the control arm 3, the support frame 1103 on the buffer mechanism 11 will compress the airbag 18. At this time, the limiting spring 19 inside the airbag 18 will be compressed simultaneously. The compressed airbag 18 will inject gas into the whistle tube 14. Then the gas is blown into the whistle tube 14 through the air inlet 17. The gas will be discharged through the exhaust port 16 on the whistle tube 14. During this airflow process, an alarm sound will be generated (the whistle produces sound based on the principle of air vibration. Specifically, after air is blown into the whistle, the airflow passes through a small hole in the whistle and is restricted by the small space, generating airflow fluctuations. These fluctuations divide the air into stepped or alternating areas to form sound waves). When the airflow flows inside the whistle tube 14, it will also drive the ball bearing 15 to impact inside the whistle tube 14, increasing the intensity of the alarm sound. This serves to alert people around the user when they are in a state of weakness, preventing the user from being injured and delaying treatment.

[0084] Example 6 primarily implements a back heat dissipation function while the user is performing chest expansion exercises, thus improving user comfort;

[0085] The frame 1 is located on the resistance unit 4. One end of the tension rope is frictionally connected to the drive wheel 21. A transmission rod 22 is fixedly installed in the middle of the drive wheel 21. One end of the transmission rod 22 is movably installed on the surface of the frame 1 through a bearing. Several sets of equidistant fan blades 23 are fixedly installed on the surface of the drive wheel 21 facing the seat 2.

[0086] A friction component 24 is fixedly installed at one end of the stretchable rope on the resistance unit 4.

[0087] The friction assembly 24 includes an assembly tube 2401 fixed to one end of the resistance unit 4. The assembly tube 2401 is externally threaded to a wear-resistant tube 2402 whose surface is in contact with the inner wall of the drive wheel 21. A control wheel 2403 is fixedly installed at the top end of the wear-resistant tube 2402. In winter, the control wheel 2403 can be manually rotated clockwise. At this time, the control wheel 2403 can drive the wear-resistant tube 2402 to move upward on the assembly tube 2401. The rotation stops when the surface of the wear-resistant tube 2402 no longer contacts the drive wheel 21. At this time, when performing chest expansion training, the rope on the resistance unit 4 will not cause friction and rotation with the surface of the drive wheel 21. When used again, simply rotate the control wheel 2403 counterclockwise to restore the position of the wear-resistant tube 2402 on the assembly tube 2401.

[0088] The work steps are as follows:

[0089] When the user pulls the control arm 3 for training, the rope on the resistance unit 4 will move up and down reciprocally. Its working state is existing known technology, so this application will not describe it in detail. At this time, the wear-resistant tube 2402 of the friction component 24 at one end of the rope on the resistance unit 4 will make frictional contact with the drive wheel 21. The force generated by the friction will drive the drive wheel 21 to rotate synchronously. In this way, the drive wheel 21 will work with several sets of fan blades 23 to blow air onto the user's back. The airflow generated by the blowing will accelerate the heat dissipation and cooling of the user's back, thereby improving the user's comfort when performing chest expansion training.

[0090] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0091] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A chest expansion training device for external thoracic rehabilitation, characterized in that: The device includes a frame, an external seat, and two parallel user-operated control arms for training, positioned above the seat. A resistance unit is located between the frame and the control arms. A push rod motor is fixedly mounted on the frame at the midpoint of the two control arms. A support plate is fixed to the output end of the push rod motor. A spacing adjustment mechanism is fixedly mounted on the surface of the support plate. A longitudinal steering mechanism is fixedly mounted at each end of the spacing adjustment mechanism. A lateral steering mechanism is movably mounted at one end of the longitudinal steering mechanism. A protective plate for buffering the impact force of the control arms is fixedly mounted on the external side of the lateral steering mechanism. An assembly groove is formed on the surface of the protective plate facing the control arms. Several sets of buffer mechanisms are arranged inside the assembly groove. An elastic buffer pad is adhered to the outer wall of the assembly groove on the protective plate. The buffer mechanism includes a slide groove formed in the inner wall of the assembly groove. Several sets of sliding rods are fixedly installed in the inner cavity of the slide groove. A support frame is movably installed on each set of sliding rods. A return spring is movably sleeved at one end of each set of sliding rods connected to the support frame. An elastic buffer ball is movably installed at the center position of the support frame, and the surface of the buffer ball protrudes outside the assembly groove.

2. The chest expansion training device for external thoracic rehabilitation according to claim 1, characterized in that, The spacing adjustment mechanism includes a retaining plate fixed on a support plate. A rotatable adjusting rod is movably mounted in the inner cavity of the retaining plate via a bearing. The surface of the adjusting rod is provided with two equidistant threads arranged in opposite directions. A toothed groove is provided at the center of the adjusting rod. A drive gear meshes with the outside of the toothed groove. A drive motor is fixedly mounted in the middle of the drive gear. Movable grooves are provided at both ends of the retaining plate. A support rod passing through the movable groove is threaded to both ends of the adjusting rod.

3. The chest expansion training device for external thoracic rehabilitation according to claim 2, characterized in that, The longitudinal steering mechanism includes an assembly box fixed to one end of a support rod on a spacing adjustment mechanism. A first steering motor is fixed inside the assembly box. An adjustment block is fixedly installed at the output end of the first steering motor extending outside the assembly box. Several sets of equidistant first positioning grooves are formed on the surface of the adjustment block. Several sets of first merging grooves corresponding to the first positioning grooves are formed on the surface of the assembly box. A first guide rod is fixed inside the cavity of the first merging groove. A first shaping block that is inserted into the first positioning groove and limits the rotation of the adjustment block is movably installed at one end of the first guide rod. A first retaining spring is fixedly installed at one end of the first shaping block located inside the cavity of the first merging groove. The cavity of the adjustment block is connected to one end of the lateral steering mechanism.

4. The chest expansion training device for external thoracic rehabilitation according to claim 2, characterized in that, The lateral steering mechanism includes a second steering motor fixed in the inner cavity of the adjusting block. The output end of the second steering motor located outside the adjusting block is fixedly mounted with a mounting box. An adjusting motor is fixedly mounted in the inner cavity of the mounting box. The output end of the adjusting motor is fixed to one end of the protective plate. A rubber locking strip is provided between the protective plate and the mounting box to restrict the rotation of the protective plate. Several sets of equidistant second positioning slots are opened at the bottom of the mounting box. A second merging slot is opened at the top of the adjusting block. A second guide rod is fixed in the inner cavity of the second merging slot. A second shaping block is movably installed at one end of the second guide rod and inserted into the second merging slot to limit the rotation of the mounting box. A second retaining spring is fixedly installed at one end of the second shaping block located in the inner cavity of the second merging slot.

5. The chest expansion training device for external thoracic rehabilitation according to claim 1, characterized in that, Each assembly slot on the protective plate has a vent hole on its outer wall. A whistle tube is fixed inside the vent hole. A ball bearing is movably installed inside the whistle tube. An exhaust hole is opened on the outer wall of the whistle tube. An air inlet is opened at one end of the whistle tube. An air bladder is fixedly installed at one end of the air inlet. A limit spring is fixedly installed inside the air bladder.

6. The chest expansion training device for external thoracic rehabilitation according to claim 5, characterized in that, The inner wall of the assembly groove is fixedly installed with several layers of buffer rings, and one end of the airbag is positioned close to one of the buffer rings.

7. The chest expansion training device for external thoracic rehabilitation according to claim 1, characterized in that, The frame is located on the resistance unit, and one end of the tension rope is frictionally connected to the drive wheel. A transmission rod is fixedly installed in the middle of the drive wheel. One end of the transmission rod is movably installed on the surface of the frame through a bearing. Several sets of equidistant fan blades are fixedly installed on the surface of the drive wheel facing the seat.

8. The chest expansion training device for external thoracic rehabilitation according to claim 7, characterized in that, A friction component is fixedly installed at one end of the stretchable rope on the resistance unit.

9. The chest expansion training device for external thoracic rehabilitation according to claim 8, characterized in that, The friction assembly includes an assembly tube fixed to one end of the resistance unit. The assembly tube is externally threaded with a wear-resistant tube whose surface is in contact with the inner wall of the drive wheel. A control wheel is fixedly installed at the top end of the wear-resistant tube.

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