Air bag damping treadmill and air bag mounting structure thereof

Abstract

The utility model relates to the technical field of treadmills, in particular to an air bag damping treadmill and an air bag mounting structure thereof. The inflatable airbag is fixedly mounted at the bottom of a running plate of the airbag damping treadmill through the mounting edge part, a bearing plate is fixedly arranged under the inflatable airbag, and the running plate is pressed during running to compress the inflatable airbag on the bearing plate; in the running process, the inflatable air bag fluctuates up and down along with the running plate, the inflatable air bag deforms and displaces, and the bearing plate does not move, so that stress distribution of the inflatable air bag is uniform, abrasion is reduced, and the defect of local high stress of the running plate to the top of the air bag in a traditional installation structure that the air bag is fixedly installed on the bottom frame is overcome. Besides, the electromagnetic valve group is adopted between the air pump and the plurality of inflatable airbags, so that independent inflation and deflation can be realized, synchronous inflation and deflation of a plurality of airbags can also be realized, the air path is simplified, the integration degree is high, and the installation is also convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to treadmill technical field, concretely relates to an air bag damping treadmill and air bag mounting structure thereof. BACKGROUND

[0002] Treadmill is commonly used fitness equipment, and is widely used in family and commercial fitness places. In order to reduce the impact of running platform, a damping device is generally arranged between the running plate and the chassis. The type of damping device is various, including rubber damping, silica gel damping, spring damping and air bag damping appeared in recent years.

[0003] The traditional air bag mounting structure is that the air bag is fixed on the chassis through the air bag fixing frame, and the relative movement occurs between the air bag and the running plate, for example, Chinese patent publication (CN111840899A) and Chinese patent publication (CN104623865A). Because there is a double-foot emptying stage in the running process, the running plate will be separated from the top surface of the air bag in the double-foot emptying stage, and after landing, the running plate will quickly impact the air bag and force the running plate to quickly impact the air bag, and the local high stress of the top surface of the air bag is prone to wear and tear.

[0004] In addition, for the air bag damping treadmill, a gas pump is needed to inflate and deflate the air bag. Chinese patent publication (CN206275968U) discloses a self-adaptive running platform with an air bag assembly, the air bag assembly is installed on the main support, the air bag assembly includes left and right air bags, and the left and right air bags are in gas communication through a gas guide pipe. By inflating and deflating the air bag assembly, the hardness of the running plate can be adjusted. However, the inflation and deflation path of such air bag can only inflate and deflate different air bags synchronously, and cannot achieve separate inflation and deflation operation. Since the softness and hardness adjustment requires the gas pump to inflate, deflate and close the air bag, if separate inflation and deflation is required, independent electromagnetic valves and air release valves need to be provided, for example, Chinese patent publication (CN111840899A). If one gas pump supplies multiple air bags, a multi-way electromagnetic valve needs to be added between the gas pump and the air bag gas path, so that the integration of the inflation and deflation path is not good. UTILITY MODEL CONTENTS

[0005] One of the purposes of the utility model is to provide an air bag mounting structure of an air bag damping treadmill, which can make the stress distribution of the inflated air bag more uniform and reduce wear and tear.

[0006] To achieve the above purpose, the utility model adopts the technical scheme of: an air bag mounting structure of an air bag damping treadmill, the top edge of the inflated air bag is provided with a mounting edge, the inflated air bag is fixedly installed on the bottom of the running plate of the air bag damping treadmill through the mounting edge, and a pressure bearing plate is fixedly arranged below the inflated air bag, so that the running plate is compressed to compress the inflated air bag on the pressure bearing plate during running.

[0007] Preferably, the mounting edge is integrally formed with the air bag.

[0008] Preferably, the mounting edge is provided with two mounting edges respectively located on two sides of the air bag, and the top wall of the air bag is integrally connected with the mounting edges on the two sides.

[0009] Preferably, the wall thickness of the top wall of the air bag is greater than the wall thickness of other parts of the air bag.

[0010] Preferably, the mounting edge is a solid sheet structure.

[0011] Preferably, mounting holes for passing fasteners are provided on the mounting edge, and threaded holes are provided on the bottom of the running board corresponding to the positions of the mounting holes, and the fasteners pass through the mounting holes and are screwed into the corresponding threaded holes.

[0012] Another purpose of the utility model is to provide an air bag shock-absorbing treadmill, which simplifies the air circuit, has high integration, is easy to install, and makes the stress distribution of the air bag more uniform.

[0013] To achieve the above-mentioned purposes, the utility model adopts the technical scheme: including a running board and two or more air bags located on the left and right sides of the running board, the air bag mounting structure is adopted between the air bag and the running board, one side of each air bag is provided with a gas pipe interface and a first gas pipe connected to the gas pipe interface, each air bag is connected to the first interface of an independent three-way joint through the corresponding first gas pipe, the third interface of each three-way joint is connected with an independent air pressure sensor through the corresponding third gas pipe, the second interface of each three-way joint is connected to different load interfaces of the same electromagnetic valve group through the corresponding second gas pipe, and the electromagnetic valve group also has a gas source interface connected with a gas pump and a gas exhaust port in communication with the external atmosphere, and the air pressure sensor, the electromagnetic valve group and the gas pump are all electrically connected to a controller.

[0014] Preferably, the electromagnetic valve group includes a bus bar, a charging and discharging electromagnetic valve and a gas exhaust electromagnetic valve mounted on the bus bar, the number of the charging and discharging electromagnetic valves matches the number of the air bags, the load interface, the gas source interface and the gas exhaust port are all located on the bus bar, the bus bar also has a gas flow channel in communication with the gas source interface, the gas inlet end of each charging and discharging electromagnetic valve and the gas inlet end of the gas exhaust electromagnetic valve, and a plurality of gas outlet channels respectively in communication with the load interface, the gas outlet end of the corresponding charging and discharging electromagnetic valve and the gas outlet end of the gas exhaust electromagnetic valve, the gas outlet end of each charging and discharging electromagnetic valve is communicated to different load interfaces through the corresponding gas outlet channel, the gas outlet end of the gas exhaust electromagnetic valve is communicated to the gas exhaust port through the corresponding gas outlet channel, and the charging and discharging electromagnetic valve and the gas exhaust electromagnetic valve are all electrically connected to the controller.

[0015] Preferably, the number of the inflatable air bags is two or four, and the number of the air pumps is one.

[0016] Preferably, the length direction of the inflatable air bag is arranged along the front-rear direction or the left-right direction of the running board.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses an inflatable air bag is fixed on the bottom of the running board through the installation edge portion and is fixedly arranged with the pressure bearing plate directly below, the inflatable air bag is compressed on the pressure bearing plate when the running board is compressed in running, and the compression deformation of the inflatable air bag plays the role of buffering the reaction force and reducing the impact side effect, and the inflatable air bag is up and down with the running board in the running process, the inflatable air bag deforms and displaces, and the pressure bearing plate is fixed, so that the stress distribution of the inflatable air bag is more uniform, the wear is reduced, the local high stress defect of the air bag top by the running board in the traditional installation structure of the air bag fixed on the chassis is overcome, and the rebound of the running board under the action of the damping structure at other places can help the air bag to reset.

[0019] The utility model discloses between air pump and a plurality of inflatable air bags adopts solenoid valve group, solenoid valve group has gas source interface, with the air communication of outside air release port and with the same number of load interface of inflatable air bag, each inflatable air bag is connected to corresponding load interface, under the inflation state, solenoid valve group action switches to the conduction air pump and each inflatable air bag, under the deflation state, solenoid valve group action switches to the conduction each inflatable air bag and outside air, under the closed state, action switches to disconnect air bag and outside passage, can realize single inflation and deflation, also can realize a plurality of synchronous inflation and deflation, simplify the gas circuit, and the integration is high, and the installation is also convenient. ACCURACY OF DRAWINGS

[0020] Figure 1 It is the installation structure schematic drawing of the inflatable air bag of the utility model on the bottom of the running board.

[0021] Figure 2 It is Figure 1 The partial close -up of P shown in the figure.

[0022] Figure 3 It is the inflatable air bag structure schematic drawing of the utility model with the installation edge portion.

[0023] Figure 4 It is the top view of the inflatable air bag of the utility model with the installation edge portion.

[0024] Figure 5 It is the running board, inflatable air bag and pressure bearing plate separate schematic drawing of the utility model embodiment 2.

[0025] Figure 6 It is the gas circuit between the air pump and the inflatable air bag of the utility model embodiment 2.

[0026] Figure 7 This is a schematic diagram of the manifold structure of the electromagnetic valve assembly of this utility model.

[0027] Figure 8 This is a schematic diagram of the air path between the air pump and the inflatable airbag in Embodiment 3 of this utility model.

[0028] The diagram is labeled as follows: 101, running board; 102, base frame; 103, pressure plate; 10, air pump; 20, inflatable airbag; 21, inflatable airbag; 31, manifold; 32, inflation / deflation solenoid valve; 33, deflation solenoid valve; 311, air source interface; 312, load interface; 313, vent; 314, air inlet channel; 315, air outlet channel; 41, first air pipe; 42, second air pipe; 43, third air pipe; 44, tee connector; 50, air pressure sensor. Detailed Implementation

[0029] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation. Example 1

[0030] like Figures 1-4 As shown, this embodiment provides an airbag installation structure for an airbag shock-absorbing treadmill. The top of the inflatable airbag 20 is fixedly installed at the bottom of the running board 101, and a pressure plate 103 is fixedly installed directly below the inflatable airbag 20. The inflatable airbag 20 moves up and down with the running board 101. During running, the running board 101 is compressed, which compresses the inflatable airbag 20 onto the pressure plate 103. The compression deformation of the inflatable airbag 20 serves to buffer the reaction force and reduce the impact side effects.

[0031] In this embodiment, the top edge of the inflatable airbag 20 is provided with a mounting edge 21. Specifically, the mounting edge 21 is integrally formed with the inflatable airbag 20, and the wall thickness of the top wall of the inflatable airbag 20 is greater than the wall thickness of other parts of the inflatable airbag 20. In other examples, the mounting edge 21 may also be fixed to the body of the inflatable airbag 20 by ultrasonic welding or clamping. In summary, the mounting edge 21 is formed at the top position of the inflatable airbag 20 where it connects with the bottom of the running board 101, and the inflatable airbag 20 is fixedly mounted to the bottom of the running board 101 of the airbag shock-absorbing treadmill through the mounting edge 21.

[0032] The installation edge portion 21 is provided with two, in this embodiment, the installation state of the air bag 20 at the bottom of the running board 101 is that the length direction of the air bag 20 is along the left and right sides of the running board 101, so the two installation edge portions 21 are respectively located on the front and rear sides of the air bag 20, and the top wall of the air bag 20 is connected with the installation edge portions 21 on the front and rear sides as a whole. It should be pointed out that when the installation state of the air bag 20 at the bottom of the running board 101 is that the length direction of the air bag 20 is along the front and rear sides of the running board 101, the two installation edge portions 21 are respectively located on the left and right sides of the air bag 20.

[0033] The installation mode between the installation edge portion 21 and the bottom of the running board 101 can adopt a fastener locking mode or an intermediate clamping card connection mode, etc. In this embodiment, the installation edge portion 21 is a solid sheet structure, the installation hole for penetrating the fastener is provided on the installation edge portion 21, the threaded hole corresponding to the installation hole is provided at the position of the bottom of the running board 101, and the fastener penetrates the installation hole and is screwed into the corresponding threaded hole. Embodiment 2

[0034] As shown in Figures 1 to 7 The air bag shock-absorbing treadmill provided in this embodiment includes the running board 101 and four air bags 20 located on the left and right sides of the running board 101. Two air bags 20 are arranged on the left side of the running board 101, two air bags 20 are arranged on the right side of the running board 101, and the length direction of each air bag 20 is arranged along the left and right directions of the running board 101. Then, the four air bags 20 are individually inflated or partially simultaneously inflated or fully simultaneously inflated by the air pump 10.

[0035] The air bag shock-absorbing treadmill provided in this embodiment includes the running board 101 and four air bags 20 located on the left and right sides of the running board 101. Two air bags 20 are arranged on the left side of the running board 101, two air bags 20 are arranged on the right side of the running board 101, and the length direction of each air bag 20 is arranged along the left and right directions of the running board 101. Then, the four air bags 20 are individually inflated or partially simultaneously inflated or fully simultaneously inflated by the air pump 10.

[0036] One side of each air bag 20 is provided with an air pipe interface and a first air pipe 41 connected to the air pipe interface. Each air bag 20 is connected to the first interface of an independent three-way joint 44 through the corresponding first air pipe 41. The third interface of each three-way joint 44 is connected with an independent air pressure sensor 50 through the corresponding third air pipe 43. The second interface of each three-way joint 44 is connected to different load interfaces 312 of the same electromagnetic valve group through the corresponding second air pipe 42. The number of three-way joints 44, the number of air pressure sensors 50 and the number of load interfaces 312 are the same as the number of air bags 20.

[0037] The electromagnetic valve group comprises a busbar 31, a deflation electromagnetic valve 33 and as many inflation / deflation electromagnetic valves 32 as the number of the inflatable air bags 20, as shown in the figure. Figure 1 As shown in the figure, the busbar 31 is provided with a gas source interface 311 connected to the air pump 10 through a hose, a deflation port 313 in communication with the external atmosphere, as many load interfaces 312 as the number of the inflatable air bags 20, an air inlet channel 314 in communication with the gas source interface 311 and the air inlet ends of the inflation / deflation electromagnetic valves 32 and the air inlet end of the deflation electromagnetic valve 33, and a plurality of air outlet channels 315 respectively in communication with the load interfaces 312 and the air outlet ends of the corresponding inflation / deflation electromagnetic valves 32 and the deflation electromagnetic valve 33, the air outlet ends of the inflation / deflation electromagnetic valves 32 are respectively connected to different load interfaces 312 through the corresponding air outlet channels 315, and the air outlet end of the deflation electromagnetic valve 33 is connected to the deflation port 313 through the corresponding air outlet channel 315.

[0038] The deflation electromagnetic valve 33 and the inflation / deflation electromagnetic valves 32 are both two-position two-common-closed electromagnetic valves and are electrically connected to the controller, and can be specifically selected from the T103 series micro electromagnetic valves of Zhejiang Ousite Electronics Technology, the air pressure sensor 50 is selected from the MCP-H10 series sensor of Shandong Aidi Electronics Information Technology, and the controller chip adopts STM32G070CBT6. The controller collects the air pressure signal of the air pressure sensor 50 and controls the conduction and disconnection of the electromagnetic valves through power-on and power-off, which is a mature technical means.

[0039] In this way, in the inflation state, the inflation / deflation electromagnetic valves 32 are switched to the conduction state in which the air inlet end and the air outlet end are in communication, and the deflation electromagnetic valve 33 is switched to the disconnection state in which the air inlet end and the air outlet end are blocked, so that the air flow of the air pump 10 can be communicated with the corresponding inflatable air bag 20 through the gas source interface 311, the air inlet channel 314, the air inlet end and the air outlet end of the inflation / deflation electromagnetic valve 32, and the load interface 312, realizing the inflation of the inflatable air bag 20 by the air pump 10; in the deflation state, the inflation / deflation electromagnetic valves 32 are switched to the conduction state in which the air inlet end and the air outlet end are in communication, and the deflation electromagnetic valve 33 is also switched to the conduction state, so that the air flow of the inflatable air bag 20 can be communicated with the external atmosphere through the load interface 312, the air outlet end and the air inlet end of the inflation / deflation electromagnetic valve 32, the air inlet channel 314, the air inlet end and the air outlet end of the deflation electromagnetic valve 33, and the deflation port 313, realizing the deflation of the inflatable air bag 20; in the closed state, the inflation / deflation electromagnetic valves 32 are switched to the disconnection state, and the deflation electromagnetic valve 33 is also switched to the disconnection state, realizing the closed state of the inflatable air bag 20.

[0040] The top of each inflatable air bag 20 is fixedly installed at the bottom of the running board 101, and a pressure bearing plate 103 is fixedly arranged directly below the inflatable air bag 20, the pressure bearing plate 103 extends along the left-right direction of the chassis 102 and is locked and fixed at both ends of the chassis 102, and the inflatable air bag 20 moves synchronously with the up-down movement of the running board 101, and in running, the running board 101 is compressed to compress the inflatable air bag 20 on the pressure bearing plate 103.

[0041] In the embodiment, the top edge of the inflatable air bag 20 is provided with a mounting edge 21, specifically, the mounting edge 21 is provided with two and integrally formed at the front and rear sides of the inflatable air bag 20, the top wall of the inflatable air bag 20 is integrally connected with the mounting edges 21 at the front and rear sides, the wall thickness of the top wall of the inflatable air bag 20 is greater than that of other parts of the inflatable air bag 20, and the mounting edge 21 is a solid sheet structure.

[0042] The inflatable air bag 20 is fixedly installed at the bottom of the running board 101 of the air bag damping treadmill through the mounting edge 21, specifically, mounting holes for penetrating fasteners are formed on the mounting edge 21, threaded holes are formed at the positions corresponding to the mounting holes at the bottom of the running board 101, and the fasteners penetrate through the mounting holes and are screwed into the corresponding threaded holes. Embodiment 3

[0043] As Figure 8 shown, the embodiment provides an air bag damping treadmill, which is different from the above-mentioned embodiment 1 only in that the number of inflatable air bags 20 is changed from four to two, one of the two inflatable air bags 20 is located at the left side of the running board 101 and the other is located at the right side of the running board 101, and the length direction of the two inflatable air bags 20 is arranged along the front-rear direction of the running board 101; then, the number of each of the charging and discharging solenoid valve 32, the three-way joint 44, the air pressure sensor 50, and the load interface 312 on the bus bar 31 is also adjusted to two.

[0044] The basic principles, main features and advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. The airbag installation structure of an airbag shock-absorbing treadmill, characterized in that: The top edge of the inflatable airbag is provided with an installation edge. The inflatable airbag is fixedly installed on the bottom of the running board of the airbag shock-absorbing treadmill through the installation edge. A pressure plate is fixedly installed directly below the inflatable airbag. During running, the running board is compressed and the inflatable airbag is compressed on the pressure plate.

2. The airbag installation structure of the airbag shock-absorbing treadmill according to claim 1, characterized in that: The mounting edge is integrally formed with the inflatable airbag.

3. The airbag installation structure of the airbag shock-absorbing treadmill according to claim 2, characterized in that: The mounting edge is provided with two parts, which are located on both sides of the inflatable airbag. The top wall of the inflatable airbag is integrated with the mounting edges on both sides.

4. The airbag installation structure of the airbag shock-absorbing treadmill according to claim 3, characterized in that: The thickness of the top wall of the inflatable airbag is greater than the thickness of the walls in other parts of the inflatable airbag.

5. The airbag installation structure of the airbag shock-absorbing treadmill according to claim 1, characterized in that: The mounting edge is a solid sheet structure.

6. The airbag installation structure of the airbag shock-absorbing treadmill according to claim 1, characterized in that: The mounting edge is provided with mounting holes for fasteners to pass through, and the bottom of the running plate is provided with threaded holes at the positions corresponding to the mounting holes. The fasteners pass through the mounting holes and are screwed into the corresponding threaded holes.

7. An air-cushioned treadmill, comprising a running board and two or more inflatable airbags located on the left and right sides of the running board, characterized in that: The inflatable airbags and the running board adopt the airbag installation structure of the airbag shock-absorbing treadmill as described in any one of claims 1 to 6. Each inflatable airbag has an air pipe interface and a first air pipe connected to the air pipe interface on one side. Each inflatable airbag is connected to the first interface of an independent three-way connector through its corresponding first air pipe. The third interface of each three-way connector is connected to an independent air pressure sensor through its corresponding third air pipe. The second interface of each three-way connector is connected to different load interfaces of the same solenoid valve group through its corresponding second air pipe. The solenoid valve group also has an air source interface connected to the air pump and a vent port connected to the external atmosphere. The air pressure sensor, the solenoid valve group and the air pump are all electrically connected to the controller.

8. The airbag shock-absorbing treadmill according to claim 7, characterized in that: The solenoid valve assembly includes a manifold and a charge / discharge solenoid valve and a deflation solenoid valve mounted on the manifold. The number of charge / discharge solenoid valves matches the number of inflatable airbags. The load interface, air source interface, and deflation port are all located on the manifold. The manifold also has an airflow channel connecting the air source interface to the air inlet of each charge / discharge solenoid valve and the air inlet of each deflation solenoid valve, as well as multiple air outlet channels connecting the load interface to the corresponding air outlet of each charge / discharge solenoid valve and the air outlet of each deflation solenoid valve. The air outlet of each charge / discharge solenoid valve is connected to a different load interface through a corresponding air outlet channel. The air outlet of each deflation solenoid valve is connected to the deflation port through a corresponding air outlet channel. Both the charge / discharge solenoid valve and the deflation solenoid valve are electrically connected to the controller.

9. The airbag shock-absorbing treadmill according to claim 8, characterized in that: The number of inflatable airbags is set to two or four, and the number of air pumps is set to one.

10. The airbag shock-absorbing treadmill according to claim 8, characterized in that: The length of the inflatable airbag is arranged along the front-back or left-right direction of the running board.

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