Rowing machine capable of being stored

Abstract

The utility model belongs to the technical field of rowing machines, and particularly relates to a storable rowing machine. A storable rowing machine comprises a fixed plate and a movable plate which form a base of the rowing machine and are in sliding fit with each other; the screw assemblies are symmetrically arranged and comprise screws with reverse threads, inner pressing blocks and outer pressing blocks, the outer pressing blocks are arranged on the outer sides of the movable plates, the inner pressing blocks are arranged on the inner sides of the fixed plates, and the screws are connected between the inner pressing blocks and the outer pressing blocks and serve as transmission elements of the inner pressing blocks and the outer pressing blocks; one of the outer pressing block and the inner pressing block is fixed with the screw rod and rotates or axially moves together with the screw rod, and the other pressing block is in threaded fit with the screw rod; the operating handle is arranged between the two fixing plates, and the two ends of the operating handle are in transmission connection with the two screw rods or the inner pressing blocks correspondingly; the movable plate is provided with a sliding groove extending in the length direction of the movable plate. The utility model has the advantage that the fixed plate and the movable plate can be quickly unlocked and locked.

Description

Technical Field

[0001] This utility model belongs to the field of rowing machine technology, and in particular relates to a retractable rowing machine. Background Technology

[0002] Application number 202121366525.9 describes a rowing machine, including a rowing machine body. The machine base in the rowing machine body is a telescopic machine base composed of a fixed base frame and a movable base frame. After the fixed base frame and the movable base frame are extended or retracted into place, they are fixed by tightening the knob.

[0003] The rowing machine described above is a telescopic machine consisting of a fixed base and a movable base. When the fixed and movable bases need to extend, the user must first loosen the knobs on both sides one by one, then pull the movable base to the intended extended position, and then tighten the knobs on both sides one by one. When the fixed and movable bases need to retract, the user must first loosen the knobs on both sides one by one, then pull the movable base to the intended retracted position, and then tighten the knobs on both sides one by one. Each transition requires the user to turn the knobs four times, which is rather cumbersome. Utility Model Content

[0004] To address the shortcomings of existing technologies, a rowing machine is provided that can quickly unlock and lock the fixed and movable plates.

[0005] This utility model is achieved using the following technical solution: a retractable rowing machine, comprising:

[0006] The fixed plate and the movable plate together form the base of the rowing machine and slide together.

[0007] A symmetrically arranged screw assembly includes a screw with reverse threads, an inner pressure block, and an outer pressure block. The outer pressure block is located on the outer side of a movable plate, and the inner pressure block is located on the inner side of a fixed plate. The screw connects the inner and outer pressure blocks and serves as a transmission element between them. One of the outer or inner pressure blocks is fixed to the screw and rotates or moves axially with the screw, while the other pressure block is threadedly engaged with the screw.

[0008] An operating handle is located between two fixed plates, and both ends of the operating handle are respectively connected to two screws or internal pressure blocks for transmission.

[0009] The movable plate is provided with a sliding groove extending along its length, the sliding groove being used to avoid the screw or external pressure block when the movable plate moves;

[0010] When the operating handle is turned, the screw rotates or moves axially, and the distance between the outer pressure block and the inner pressure block decreases or increases, so that the inner pressure block and the outer pressure block press and lock or release and unlock the fixed plate and the moving plate.

[0011] This design uses a single operating handle to control the synchronous rotation or axial movement of two screws. Because the threads of the two screws run in opposite directions, the inner and outer pressure blocks on both sides can move closer or further apart synchronously. This allows the outer and inner pressure blocks to press or release the fixed and movable plates, thus locking or unlocking them. When locked, the outer and inner pressure blocks press firmly against the fixed and movable plates, increasing friction to prevent movement. When unlocked, the outer and inner pressure blocks do not press firmly, allowing the movable plate to slide freely. Therefore, this design is user-friendly; users only need to turn the operating handle to control the locking or unlocking of the fixed and movable plates.

[0012] Preferably, the outer pressure block is threadedly engaged with the screw and includes a pressing part for contacting the outer side of the moving plate and an anti-rotation part for sliding engagement with the slide groove. The anti-rotation part is used to limit the rotation of the outer pressure block. When the operating handle is turned, the outer pressure block moves closer to or further away from the inner pressure block, so that the inner pressure block and the outer pressure block press and lock or release and unlock the fixed plate and the moving plate.

[0013] By setting an anti-rotation part, the outer pressure block can be prevented from rotating when the screw rotates. The anti-rotation part slides with the slide groove, and the anti-rotation part will contact the slide groove, thereby achieving the anti-rotation effect.

[0014] Preferably, the inner pressure block and the outer pressure block are provided with friction clamping surfaces that respectively contact the inner side of the fixed plate and the outer side of the moving plate. The friction clamping surfaces are provided with friction enhancement structures, which include surface roughening structures formed by machining or material composite.

[0015] By incorporating a friction-enhancing structure, friction can be increased, thus improving the locking effect. This can be achieved through existing embossing techniques during machining, and by using rubber-based composite material layers, etc.

[0016] Preferably, the screw includes a threaded section and a smooth section, the smooth section passes through the fixed plate and is rotatably connected to the fixed plate, and the threaded section is threadedly engaged with the external pressure block; the threaded section adopts a double-thread structure.

[0017] The use of double-threaded sections helps prevent stripping.

[0018] Preferably, the pitch of the threaded section is set such that when the operating handle is rotated half a turn to one turn, the driving external pressure block generates an axial displacement sufficient to press the fixed plate and the moving plate together.

[0019] The threaded section can use a large pitch, allowing users to unlock or lock with fewer rotations, making it convenient and quick for users to operate.

[0020] Preferably, the operating handle can rotate up to 240°, and when the operating handle is rotated to its limit position, the operating handle contacts the ground or foot pedal.

[0021] The operating handle can rotate up to 240°, and its extreme positions can be with the ground and the foot pedal respectively, making this design safer.

[0022] Preferably, the two ends of the slide groove along the sliding direction correspond to the extreme positions of the moving plate and the fixed plate when they are extended and retracted, respectively, and rigid members are fixed at the ends of the slide groove; when the moving plate and the fixed plate are locked, the external pressure block presses the rigid member, and the rigid member is used to prevent the moving block from deforming when it is pressed.

[0023] The moving and fixed plates are usually made of wood or plastic, so rigid components can be used to prevent the moving block from deforming when it is squeezed.

[0024] Preferably, the operating handle includes a connecting section and a gripping section; the connecting section is symmetrically distributed at both ends of the gripping section; the gripping section extends along a first direction, and the connecting section extends along a second direction, with an angle between the first direction and the second direction so that the gripping section can be gripped by the user.

[0025] The grip section is designed for easy handling by the user, and the entire operating handle can be C-shaped, U-shaped, or convex, etc.

[0026] Preferably, the connecting section is provided with an insertion hole in the axial direction for insertion and engagement with the end of the screw; the inner wall of the insertion hole is provided with a torque transmission structure, which forms a synchronous rotational anti-slip engagement with the outer peripheral surface of the end of the screw.

[0027] The torque transmission structure can be a spline, set screw, keyway, etc., and the connection section and screw can be detached through plug-in mating.

[0028] Preferably, the inner side of the fixing plate is provided with a side-opening embedding hole, and the inner pressure block is disposed in the embedding hole and can rotate relative to the embedding hole.

[0029] By placing the internal pressure block inside the embedding hole, the internal pressure block can be hidden, making it safer to use.

[0030] Compared with the prior art, this utility model controls the synchronous rotation of two screws through an operating handle. The fixed plate and the moving plate can be locked or unlocked simply by turning the operating handle. Compared with conventional fixing structures, it has the advantages of faster locking and more convenient operation for users. Attached Figure Description

[0031] Figure 1This is a schematic diagram of the structure of the utility model;

[0032] Figure 2 This is an enlarged view of both ends of the slide groove of the moving plate;

[0033] Figure 3 for Figure 1 A cross-sectional view of the central operating handle and screw assembly;

[0034] Figure 4 A schematic diagram of the operating handle and screw assembly;

[0035] Figure 5 for Figure 4 Exploded view;

[0036] Figure 6 for Figure 4 A sectional view.

[0037] Figure 7 This is a schematic diagram of the structure of Example 2;

[0038] Figure 8 for Figure 7 A schematic diagram of the embedded hole structure.

[0039] Reference numerals: 1. Moving plate; 2. Fixed plate; 3. Operating handle; 31. Grip section; 32. Connecting section; 321. Insertion hole; 4. Slide groove; 41. Rigid component; 5. Outer pressure block; 51. Pressing part; 52. Anti-rotation part; 6. Screw; 61. Smooth section; 62. Threaded section; 63. Insertion section; 7. Inner pressure block; 8. Embedded hole. Detailed Implementation

[0040] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1 As shown, this embodiment discloses a retractable rowing machine, including a fixed plate 2 and a movable plate 1, which together form the base of the rowing machine and are slidably engaged to achieve telescopic storage. The fixed plate 2 is located inside the movable plate 1, and the two have overlapping portions in the horizontal direction.

[0042] The rowing machine's resistance system and ropes will be installed on the fixed plate 2, and guide rails and a seat cushion that slides onto the guide rails will be installed on the movable plate 1.

[0043] like Figures 1 to 6As shown, symmetrically arranged screw assemblies are provided at the end of the fixed plate 2 away from the resistance system and the rope. These assemblies include screws 6 with reverse threads; one screw 6 has a counter-rotating double-threaded design, and the other has a clockwise double-threaded design. Each screw 6 includes a threaded section 62, a smooth section 61, and a connecting section 63. The smooth section 61 is located between the threaded section 62 and the connecting section 63. The smooth section 61 passes through the fixed plate 2 and is rotatably connected to it. The threaded section 62 passes through both the fixed plate 2 and the movable plate 1. Both screws 6 employ a large-pitch thread structure in their threaded sections.

[0044] The screw assembly also includes an inner pressure block 7 and an outer pressure block 5. The inner pressure block 7 is a vertically oriented disc and is located on the inner side of the fixed plate 2, integrally formed with the screw 6. The outer pressure block 5 is located on the outer side of the moving plate 1, and from the outside to the inside, the outer pressure block 5 includes a clamping part 51 and an anti-rotation part 52. The clamping part 51 is also a vertically oriented disc. The inner pressure block 7 and the outer pressure block 5 are provided with friction clamping surfaces that respectively contact the inner side of the fixed plate 2 and the outer side of the moving plate 1. The surfaces of the friction clamping surfaces are embossed (not shown in the figure) to increase the friction force.

[0045] The movable plate 1 is provided with a groove 4 extending in the sliding direction. The groove 4 passes through the movable plate 1 in the horizontal direction. The anti-rotation part 52 extends in the horizontal direction and passes through the groove 4 before being threaded into the screw 6. The anti-rotation part 52 slides within the groove 4 and restricts the external pressure block 5 from rotating.

[0046] Since the outer pressure block 5 is threaded onto the screw 6, and the screw 6 is rotatably connected to the fixed plate 2, the outer pressure block 5 will not move. When the moving plate 1 slides, the sliding direction is kept in a straight line by the cooperation between the sliding groove 4 and the anti-rotation part 52 of the outer pressure block 5. Therefore, the sliding groove 4 also serves as a matching groove for the sliding cooperation between the moving plate 1 and the fixed plate 2, making the structure more compact and eliminating the need for other sliding cooperation structures between the moving plate and the fixed plate.

[0047] An operating handle 3 is also provided between the two fixed plates 2. The operating handle 3 includes an integrally formed connecting section 32 and a grip section 31. The grip section 31 extends along an arc-shaped second direction and has a C-shaped structure. The connecting section 32 extends in a straight line along a first direction and is symmetrically distributed at both ends of the grip section 31. The first direction and the second direction have an included angle so that the grip section 31 can be gripped by the user. The connecting section 32 has an axial insertion hole 321 that forms an insertion fit with the end of the screw 6. The inner wall of the insertion hole 321 has a torque transmission structure. The torque transmission structure has a hexagonal cross-sectional shape on the circumferential inner wall of the insertion hole 321. The insertion section 63 of the screw 6 is inserted into the insertion hole 321, and the circumferential outer wall of the insertion section 63 is also hexagonal, so that the screw 6 and the operating handle 3 form a synchronous rotation anti-slip fit.

[0048] When the operating handle 3 is turned, the two screws 6 rotate synchronously, causing the outer pressure block 5 to move closer to or further away from the inner pressure block 7. This allows the inner pressure block 7 and the outer pressure block 5 to press and lock the fixed plate 2 and the moving plate 1, or to release and unlock them. Furthermore, because the threaded section 62 uses a large pitch, rotating the operating handle 3 half a turn to one turn drives the outer pressure block 5 to generate an axial displacement sufficient to press the fixed plate 2 and the moving plate 1 together. The operating handle can rotate up to a maximum angle of 240°. When the operating handle is rotated to its limit position, it contacts the ground or foot pedal.

[0049] The two ends of the slide along the sliding direction correspond to the extreme positions of the moving plate 1 and the fixed plate 2 when they are extended and retracted, respectively, and the ends of the slide are fixed with rigid members 41. When the moving plate 1 and the fixed plate 2 are locked, the outer pressure block 5 presses the rigid member 41. The rigid member 41 is an iron sheet used to prevent the moving plate 1 from deforming when it is pressed.

[0050] In use, the user first rotates the operating handle 3 in the positive direction, causing the two screws 6 to rotate synchronously. This causes the outer pressure block 5 to move away from the inner pressure block 7, creating a gap between the moving plate 1 and the fixed plate 2 to allow the moving plate 1 to slide. When the moving plate 1 slides to its extended or retracted limit position, the user rotates the operating handle 3 in the opposite direction, causing the two screws 6 to rotate synchronously. This causes the outer pressure block 5 to move closer to the inner pressure block 7, thus pressing the moving plate 1 and the fixed plate 2 together, preventing relative movement between them. At this point, the moving plate 1 and the fixed plate 2 are fixed in place.

[0051] Example 2

[0052] like Figure 7 and Figure 8 As shown, the difference between this embodiment 2 and embodiment 1 is that the operating handle 3 in this embodiment 2 is U-shaped as a whole, and the inner side of the fixing plate 1 is provided with a side-opening embedding hole 8. The inner pressure block 7 is set in the embedding hole 8 and can rotate relative to the embedding hole 8.

[0053] Example 3

[0054] The difference between Embodiment 3 and Embodiment 1 is as follows: the outer pressure block 5 is fixedly connected to the screw 6, and the anti-rotation part 52 of the outer pressure block 5 restricts the rotation of the screw 6; the inner pressure block 7 has a threaded sleeve, which has an internal thread structure and is fitted onto one end of the screw 6 and threadedly engaged with the screw 6. The other end of the inner pressure block 7, away from the screw 6, is fixedly connected to the connecting section 32 of the operating handle 3 or is equipped with a convex shaft insertion engagement to achieve torque transmission. When the operating handle 3 is rotated, the inner pressure block 7 rotates, causing the screw 6 to move axially, causing the outer pressure block 5 to move closer to or away from the inner pressure block 7. (Not shown in the figure)

[0055] Example 4

[0056] The difference between Embodiment 4 and Embodiment 1 is that: the outer pressure block 5 is fixedly connected to the screw 6, the outer pressure block 5 does not have an anti-rotation part 52, while the inner pressure block 7 has an anti-rotation part 52, which cooperates with the fixing plate 2 to prevent the inner pressure block 7 from rotating. The screw 6 is threaded into the inner pressure block 7 and passes through the inner pressure block 7 before being fixedly connected to the connecting section 32 of the operating handle 3. When the operating handle 3 is rotated, the screw 6 rotates, and the inner pressure block 7 moves axially, moving closer to or away from the outer pressure block 5 (not shown in the figure).

Claims

1. A stowable rowing machine characterized by, include: The fixed plate and the movable plate together form the base of the rowing machine and slide together. A symmetrically arranged screw assembly includes a screw with reverse threads, an inner pressure block, and an outer pressure block. The outer pressure block is located on the outside of the moving plate, and the inner pressure block is located on the inside of the fixed plate. The screw connects the inner pressure block and the outer pressure block and serves as a transmission element between them. One of the outer or inner pressure blocks is fixed to the screw and rotates or moves axially together with the screw, while the other pressure block is threadedly engaged with the screw. as well as An operating handle is located between two fixed plates, and both ends of the operating handle are respectively connected to two screws or internal pressure blocks for transmission. The movable plate is provided with a sliding groove extending along its length, the sliding groove being used to avoid the screw or external pressure block when the movable plate moves; When the operating handle is turned, the screw rotates or moves axially, and the distance between the outer pressure block and the inner pressure block decreases or increases, so that the inner pressure block and the outer pressure block press and lock or release and unlock the fixed plate and the moving plate.

2. The stowable rowing machine of claim 1, wherein: The outer pressure block is threadedly engaged with the screw and includes a pressing part for contacting the outer side of the moving plate and an anti-rotation part for sliding engagement with the slide groove. The anti-rotation part is used to limit the rotation of the outer pressure block. When the operating handle is turned, the outer pressure block moves closer to or further away from the inner pressure block, so that the inner pressure block and the outer pressure block press and lock or release and unlock the fixed plate and the moving plate.

3. The stowable rowing machine of claim 1, wherein: The inner and outer pressure blocks are provided with friction clamping surfaces that respectively contact the inner side of the fixed plate and the outer side of the moving plate. The friction clamping surfaces are provided with friction enhancement structures, which include surface roughening structures formed by machining or material composites.

4. The stowable rowing machine of claim 2, wherein: The screw includes a threaded section and a smooth section. The smooth section passes through the fixed plate and is rotatably connected to the fixed plate. The threaded section is threadedly engaged with the external pressure block. The threaded section adopts a double-thread structure.

5. The stowable rowing machine of claim 4, wherein: The pitch of the threaded section is set such that when the operating handle is rotated half a turn to one turn, the external pressure block is driven to generate an axial displacement sufficient to press the fixed plate and the moving plate together.

6. The stowable rowing machine of claim 5, wherein: The operating handle can rotate up to 240°. When the operating handle is rotated to its limit position, the operating handle contacts the ground or foot pedal.

7. The stowable rowing machine of claim 1, wherein: The two ends of the slide groove along the sliding direction correspond to the extreme positions of the moving plate and the fixed plate when they are extended and retracted, respectively, and rigid members are fixed at both ends; when the moving plate and the fixed plate are locked, the outer pressure block squeezes the rigid member, and the rigid member is used to prevent the moving block from deforming when squeezed.

8. The stowable rowing machine of claim 1, wherein: The operating handle includes a connecting section and a gripping section; the connecting section is symmetrically distributed at both ends of the gripping section; the gripping section extends along a first direction, and the connecting section extends along a second direction, with an angle between the first direction and the second direction so that the gripping section can be gripped by the user.

9. The stowable rowing machine of claim 8, wherein: The connecting section is provided with an axial insertion hole for insertion into the end of the screw; the inner wall of the insertion hole is provided with a torque transmission structure, which forms a synchronous rotational anti-slip fit with the outer peripheral surface of the end of the screw.

10. The stowable rowing machine of any one of claims 1 to 9, wherein: The inner side of the fixing plate is provided with a side-opening embedding hole, and the inner pressure block is disposed in the embedding hole and can rotate relative to the embedding hole.

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