Door lock mechanism and underwater treadmill using same

Abstract

The utility model provides a door lock mechanism and using the underwater treadmill of this door lock mechanism, including locking subassembly and rotatory subassembly, locking subassembly includes locking pin, rotatory subassembly includes the handle that is used for rotating, with the handle shaft of handle connection and install the guide groove plate of handle shaft, on the guide groove plate is provided with curvilinear guide groove, and the guide groove is equipped with the locking pin. When the locking assembly and the rotating assembly are buckled, the locking pin slides relatively along the guide groove, a shaft hole is further formed in the guide groove plate and used for installing the guide groove plate to the handle shaft, the guide groove comprises a plurality of circular arcs which are smoothly connected, and at least two circular arcs in the circular arcs are concentric with the shaft hole. The door lock mechanism is simple in structure and convenient to use, can bear water pressure of one ton when being closed, and can quickly complete reliable locking of the box door of the underwater treadmill.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of underwater running machines, in particular to a door lock mechanism and an underwater running machine using the door lock mechanism. BACKGROUND

[0002] Running is a popular way of exercise, when we run, our legs, feet, waist and heart and lung can be well exercised. But running also has disadvantages, even professional athletes, running can easily cause damage to the joints of the legs and feet. However, if we choose to practice underwater, such as swimming practice, underwater running, the damage can be minimized. Therefore, underwater running in water can not only easily exercise the leg muscles, but also reduce muscle damage. The underwater running machine thus emerged as the times require.

[0003] Among them, the underwater running machine includes a step-in type independent underwater running machine, which includes a box body and a running belt arranged in the box body. When using, water is injected into the box body, and the user can run in the water. In order to facilitate the user to enter and exit the underwater running machine, a box door is provided on the box body. After the user opens the door and enters the box body, water is injected into the box body. Therefore, the box door needs to seal to prevent leakage and needs to withstand the water pressure in the box body. Previously, the inventor has proposed a door lock mechanism in Chinese patent application CN116658011A, but the structure is relatively more complex. Therefore, it is necessary to propose a door lock mechanism for underwater running machine with simple structure and sufficient pressure bearing. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings of the prior art, one object of the present utility model is to provide a door lock mechanism for underwater running machine, which is simple in structure, convenient to use, can withstand water pressure of up to one ton when closed, and can quickly complete reliable locking of the box door of the underwater running machine.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] A door lock mechanism for underwater running machine, comprising a locking assembly and a rotating assembly, the locking assembly comprising a locking pin, the rotating assembly comprising a handle for rotation, a handle shaft connected with the handle, and a guide groove plate mounted to the handle shaft, the guide groove plate being provided with a curved guide groove, the locking pin being relatively slid along the guide groove when the locking assembly is buckled with the rotating assembly, the guide groove plate being further provided with a shaft hole for mounting the guide groove plate to the handle shaft, wherein the guide groove comprises a plurality of circular arcs connected smoothly, and at least two of the plurality of circular arcs are concentric with the shaft hole.

[0007] In one embodiment, the locking assembly further comprises a connecting plate, the locking pin is fixed on the connecting plate, and the connecting plate is fixedly installed on the hatch door of the underwater treadmill.

[0008] In one embodiment, the locking pin comprises a pin portion and support portions located at both ends of the pin portion, and one end of the support portion is fixed to the connecting plate.

[0009] In one embodiment, the center of the pin portion is higher than the center of the shaft hole, forming an eccentric structure.

[0010] In one embodiment, the angle between the line connecting the center of the pin portion and the center of the shaft hole and the horizontal direction is 3°.

[0011] In one embodiment, the guide groove plate is installed on the end of the handle shaft away from the handle.

[0012] In one embodiment, the first bearing is installed on the end of the handle shaft close to the handle, and the second bearing is installed on the end of the handle shaft away from the handle.

[0013] In one embodiment, the shaft hole of the guide groove plate is further provided with a first key groove, the handle shaft is provided with a second key groove at a corresponding position, and a flat key is clamped between the first key groove and the second key groove.

[0014] In one embodiment, the side of the guide groove plate away from the handle is provided with a stopper for preventing the guide groove plate from moving relative to the handle shaft.

[0015] The second purpose of the utility model is to provide an underwater treadmill comprising the above-mentioned door lock mechanism.

[0016] An underwater treadmill comprises a box body, a running device and the door lock mechanism; the running device is arranged in the box body, the box body is provided with a hatch door, and the door lock mechanism is used for locking the hatch door.

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

[0018] The door lock mechanism provided by the utility model is provided with a locking assembly on the hatch door of the underwater treadmill and a rotating assembly on the door column, the design of the concentric arc of the shaft hole and the eccentric structure formed between the shaft hole and the pin makes the structure simple, the locking is reliable, and the pressure bearing capacity is strong. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a perspective view of an underwater treadmill with a door locking mechanism according to an embodiment of the present application;

[0021] Figure 2 is a perspective view of a door locking mechanism according to an embodiment of the present application;

[0022] Figure 3 is a perspective view of a locking assembly according to an embodiment of the present application;

[0023] Figure 4 is a perspective view of a rotating assembly according to an embodiment of the present application;

[0024] Figure 5 is a perspective view of a locking assembly and a guide groove plate according to an embodiment of the present application;

[0025] Figure 6 is a plan view of a guide groove plate and a locking pin according to an embodiment of the present application;

[0026] Figure 7 is a plan view of a guide groove plate and a locking pin in a locked state according to an embodiment of the present application.

[0027] Reference signs:

[0028] 100 - underwater treadmill; 1 - locking assembly; 2 - rotating assembly; 3 - box door; 4 - door post; 11 - connecting plate; 12 - support part; 13 - pin part; 21 - handle; 22 - protective cover; 23 - handle shaft; 24 - guide groove plate; 25 - first bearing; 26 - stopper; 27 - second bearing; 241 - shaft hole; 242 - first key groove; 243 - guide groove; w1 - center of pin part 13; w2 - center of shaft hole 241; a - included angle between line connecting w1 and w2 and horizontal direction; l 1, l 2 - two circular arcs concentric with shaft hole 241. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict. In the following description, a large number of specific details are described in order to facilitate a full understanding of the present application, and the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0031] Referring to Figure 1 The utility model provides a door lock mechanism for underwater treadmill 100, wherein underwater treadmill 100 includes a box, and the box is provided with door pillars 4 around, and box doors 3 are opened on the left and right sides of the box, and the box door 3 is provided with locking assemblies 1, and the door pillar 4 is provided with rotating assemblies 2, when the box door 3 is closed, the locking assembly 1 is buckled with the rotating assembly 2, and rotating the rotating assembly 2 can realize the locking of the locking assembly 1 and the rotating assembly 2. In the embodiment, the box door 3 is a glass door. In other embodiments, the box door 3 can also be made of other materials. When using, the box door 3 is locked, and water is injected into the box. The door lock mechanism provided by the utility model has simple structure, reliable locking, and can withstand water pressure of up to one ton.

[0032] Referring to Figures 2 to 4 , Figure 2 Fig. 1 shows a perspective view of the door lock mechanism of the utility model, Figure 3 and Figure 4 Fig. 2 and Fig. 3 respectively show perspective views of the locking assembly 1 and the rotating assembly 2. The locking assembly 1 includes a connecting plate 11 and a locking pin, wherein the locking pin includes a pin portion 13 and support portions 12 connected to both ends of the pin portion, the locking pin is fixed on the connecting plate 11 through one end of the support portion 12, and the connecting plate 11 is fixedly installed on the box door 3 of the underwater treadmill. The rotating assembly 2 includes a handle 21, a handle shaft 23 connected with the handle, a protective cover 22 installed on the handle shaft 23, a first bearing 25, a guide slot plate 24, a stopper 26 and a second bearing 27. The protective cover 22 is installed on the handle shaft close to one end of the handle, the first bearing 25 is arranged on the side of the protective cover 22 away from the handle 21, the first bearing 25 plays a supporting and positioning role, and facilitates the rotation of the entire rotating assembly 2. The guide slot plate 24 is spaced apart from the first bearing 25 by a certain distance. The side of the guide slot plate 24 away from the handle 21 is provided with the stopper 26, which is used to prevent the guide slot plate 24 from moving further. The side of the stopper 26 away from the handle 21 is provided with the second bearing 27, and the second bearing 27 also plays a supporting and positioning role, and facilitates the rotation of the entire rotating assembly 2. With the rotation of the entire rotating assembly 2, the guide slot plate 24 can be buckled and locked with the locking pin of the locking assembly 1, realizing the locking of the door lock mechanism. This process will be described in detail below.

[0033] For the convenience of description, Figure 5 other components are omitted, and only the perspective view of the guide slot plate 24 and the locking assembly 1 is retained. Also for the sake of clarity, Figure 6 andFigure 7 Further, the connecting plate 11 and the supporting part 12 of the locking assembly 1 are omitted, and only the plan view of the pin part 13 and the guide slot plate 24 is shown. Referring to Figures 5 to 7 , the guide slot plate 24 is a special-shaped plate, which includes a base part and a tongue part. The base part is provided with an axle hole 241 for mounting the guide slot plate 24 to the handle shaft. When the cabinet door 3 is locked, the tongue part extends into the space formed between the pin part 13 and the supporting part 12. The guide slot 243 is formed between the tongue part and the base part. The guide slot 243 is a curved slot, which is formed by several smooth- connected circular arcs. At least two of the circular arcs l 1 and l 2 (indicated by the thick black line in Figure 6 and Figure 7 ) are concentric with the axle hole 241. When the rotating assembly 2 is rotated, the guide slot plate 24 is rotated, and the pin part 13 relatively slides in the guide slot 243. When the guide slot plate 24 is rotated to the circular arc l 1 contacts the pin part 13 (as shown in Figure 7 ), the force of the circular arc l 1 on the pin part 13 is perpendicular to the tangent of the contact point and points to the center of the circular arc, i.e. the force direction points to the center w2 of the axle hole 241 along the contact point of the two. Thus, when the water pressure in the cabinet exerts on the cabinet door 3, the locking assembly 1 is subjected to a horizontal leftward pushing force. At this time, the force of the circular arc l 1 on the pin part 13 points to the center w2 of the axle hole 241, which avoids any directional component to rotate the guide slot plate 24, thereby firmly locking the locking assembly 1 and the guide slot plate 24. Similarly, when the user continues to rotate the handle 21 to rotate the guide slot plate 24 to the circular arc l 2 contacts the pin part 13, the same effect can be achieved. The concentric circular arc design enables the locking assembly 1 and the rotating assembly 2 to be locked to each other, and the locking is reliable. In addition, the center w1 of the pin part 13 is slightly higher than the center w2 of the axle hole 241, and the line connecting the center w1 of the pin part 13 and the center w2 of the axle hole 241 forms an angle α with the horizontal direction. Such eccentric structure makes the locking more firm. In the preferred embodiment, the angle α is 3°.

[0034] In the embodiment, the first key groove 242 is further arranged on the axle hole 241, and the second key groove (not shown in the figure) is arranged at the corresponding position of the handle shaft 23. The flat key is clamped between the first key groove 242 and the second key groove. Through the flat key clamped between the first key groove 242 and the second key groove, the rotation of the handle shaft 23 can drive the rotation of the guide slot plate 24. In other embodiments, the flat key can also be other forms of keys. Alternatively, in other embodiments, the handle shaft 23 can also be a light shaft, and the guide slot plate 24 also does not have a key groove, and only the interference fit between the handle shaft 23 and the guide slot plate 24 is used to realize the synchronous rotation. Alternatively, the handle shaft 23 and the guide slot plate 24 can also be integrally formed.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any modification, equivalent change and modification of the above embodiment without departing from the technical solution of the present application, and according to the technical essence of the present application, still belong to the scope of the technical solution of the present application.

Claims

1. A door lock mechanism for an underwater treadmill, characterized in that, The device includes a locking assembly and a rotating assembly. The locking assembly includes a locking pin. The rotating assembly includes a handle for rotation, a handle shaft connected to the handle, and a guide plate mounted to the handle shaft. The guide plate has a curved guide groove. When the locking assembly and the rotating assembly are engaged, the locking pin slides relative to each other along the guide groove. The guide plate also has a shaft hole for mounting the guide plate to the handle shaft. The guide groove includes several smoothly connected arc segments, and at least two of the arc segments are concentric with the shaft hole.

2. The door lock mechanism according to claim 1, characterized in that, The locking assembly also includes a connecting plate, the locking pin is fixed on the connecting plate, and the connecting plate is fixedly installed on the door of the underwater treadmill; the rotating assembly is installed on the door post of the underwater treadmill.

3. The door lock mechanism according to claim 2, characterized in that, The locking pin includes a pin portion and support portions located at both ends of the pin portion, with one end of the support portion fixed to the connecting plate.

4. The door lock mechanism according to claim 3, characterized in that, The center of the pin is higher than the center of the shaft hole, forming an eccentric structure.

5. The door lock mechanism according to claim 4, characterized in that, The angle between the line connecting the center of the pin and the center of the shaft hole and the horizontal direction is 3°.

6. The door lock mechanism according to claim 1, characterized in that, The guide plate is mounted on the end of the handle shaft away from the handle.

7. The door lock mechanism according to claim 1, characterized in that, A first bearing is installed on the end of the handle shaft near the handle, and a second bearing is installed on the end away from the handle.

8. The door lock mechanism according to claim 1, characterized in that, The guide plate has a first keyway in the shaft hole, and the handle shaft has a second keyway at a corresponding position. A flat key is engaged between the first keyway and the second keyway.

9. The door lock mechanism according to claim 1, characterized in that, The guide plate is provided with a stop on the side away from the handle.

10. An underwater treadmill, characterized in that, It includes a housing, a running device, and a door lock mechanism as described in any one of claims 1-9; the running device is disposed in the housing, the housing is provided with a door, and the door lock mechanism is used to lock the door.

Images