An exercise machine having a detachable extension arm

Abstract

This utility model belongs to the technical field of fitness equipment structure, specifically referring to a fitness device with a detachable extension arm. It includes a left and right support arm hinged together, with an elastic element at the hinge point providing a force to keep the left and right support arms extended. Each of the left and right support arms has a support pad. The left and right support arms include a detachable extension arm, which can be fixed to the end of the left and right support arms. The end of each support arm has a insertion hole into which the insertion section of the extension arm can extend. The support pad has a meshing part, and the insertion section of the extension arm has a connecting part that mates with the meshing part. The meshing part and the connecting part are fixed together, and the extension arm is fixed to the left or right support arm. Moving or rotating the support pad separates the meshing part and the connecting part, allowing the insertion section of the extension arm to be removed from the insertion hole. This utility model provides a fitness device with a detachable extension arm.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment structure technology, and specifically refers to a fitness device with a detachable extension arm. Background Technology

[0002] With the improvement of people's living standards, various fitness equipment is constantly being updated, and there is a large market demand for fitness equipment that targets specific areas such as the buttocks, legs, and pelvic floor muscles. Leg-stretching machines, as a type of fitness equipment for exercising the legs, buttocks, and pelvic floor muscles, are becoming increasingly popular. However, existing leg-stretching machines typically only include the main body and two clamping arms located on the left and right sides of the body. An elastic element is located between the two clamping arms. During exercise, the user clamps the two clamping arms with their legs, using leg strength to bring the two clamping arms closer together, overcoming the resistance of the elastic element, thus exercising the pelvic floor muscles. However, the existing leg-stretching machines have relatively limited functionality, only suitable for exercising the buttocks, legs, and pelvic floor muscles.

[0003] Therefore, multifunctional products, such as combinations of arm exercisers and leg shapers, have emerged, such as Chinese Patent CN202420095913.5, which describes a leg shaper with an arm-clamping function. This includes a leg shaper body with two clamping components at the bottom, one close to the other and the other open. A handle is located at the top of the body and is detachably connected to it. The leg shaper includes a leg-shaping mode and an arm-clamping mode. When the handle is detached from the body, the leg shaper is in leg-shaping mode; when the handle is connected, it is in arm-clamping mode. This product expands exercise options, but it also has some drawbacks: removing the handle does not affect its use as a leg shaper; however, when the handle is attached and used as an arm exerciser, the end of the leg shaper body furthest from the handle is heavier, resulting in a less than ideal user experience. Summary of the Invention

[0004] The purpose of this invention is to provide a fitness device with a detachable extension arm.

[0005] The purpose of this utility model is achieved as follows:

[0006] A fitness device with a detachable extension arm includes a left arm and a right arm that are hinged to each other. An elastic element is provided at the hinge position of the left arm and the right arm, and the elastic element provides a force to keep the left arm and the right arm extended. A support pad is provided on both the left arm and the right arm. The left arm and the right arm include a detachable extension arm, which can be fixed to the end of the left arm and the right arm.

[0007] The ends of the left and right support arms have insertion holes, into which the insertion section of the extension arm can extend. The support pad has an engaging portion, and the insertion section of the extension arm has a connecting portion that mates with the engaging portion. The engaging portion and the connecting portion are fixed together, and the extension arm is fixed to the left or right support arm. Moving or rotating the support pad separates the engaging portion and the connecting portion, allowing the insertion section of the extension arm to be removed from the insertion hole. Alternatively, the insertion section has a spring-loaded latch, and the insertion hole has a hole that mates with the spring-loaded latch. After the extension arm is installed, the spring-loaded latch is locked in the corresponding hole; pressing the spring-loaded latch in the hole allows the extension arm to be removed.

[0008] Furthermore, it includes an elastic element that provides a force to the support pad to adhere to the left or right support arm; when not subjected to external force, the support pad adheres to the left or right support arm, and the engaging portion and the connecting portion are fixed together.

[0009] Furthermore, it includes a rotating shaft, a support pad rotatably mounted on the rotating shaft, and the elastic element provided on the rotating shaft or the support pad. The support pad moves along the rotating shaft in a direction away from the left or right support arm, and the engaging part and the connecting part separate.

[0010] Furthermore, the connecting part of the extension arm plug section is a connecting hole, and the engaging part of the support pad is a plug-in post, which can extend into the connecting hole.

[0011] Furthermore, the insertion hole is provided with a positioning recess, and the extension arm is provided with a positioning protrusion; when the extension arm is installed in place, the positioning protrusion is limited within the positioning recess, the extension arm cannot rotate relative to the insertion hole, and the connection hole reaches the designated position for mating with the insertion post.

[0012] Furthermore, the side of the connecting hole has an inlet slot, the width of which is less than the outer diameter of the plug or the widest position, and the plug cannot be disengaged from the inlet slot; the width of the inlet slot is greater than the outer diameter of the pivot of the support pad, and the pivot of the support pad can freely enter and exit the inlet slot.

[0013] Furthermore, the end of the inlet slot is provided with a guide portion, which can push the plug-in post away from the left or right support arm. When the plug-in section of the extension arm is installed in place, the plug-in post enters the connection hole along the inlet slot.

[0014] Furthermore, the left and right support arms are provided with a plurality of first protrusions around the position where they connect to the support pad, and a retaining portion is formed between the first protrusions; the support pad is provided with a second protrusion at the position where it connects to the left / right support arm, and the second protrusion can be held in any retaining portion under the action of an elastic member. When the second protrusion is located in different retaining portions, the support pad maintains different tilt angles.

[0015] Furthermore, the first protrusion and / or the second protrusion are provided with guide surfaces. When the support pad is rotated, it can move along the guide surfaces under the action of the guide surfaces, thereby moving the support pad away from the left / right support arm. At the same time, the engagement part and the connecting part separate, and the insertion section of the extension arm can be moved out of the insertion hole.

[0016] Furthermore, the upper end of the first protrusion is provided with a stopping part. When the support pad is rotated, the second protrusion can stay on the stopping part, and the biting part and the connecting part remain in a separated state.

[0017] Furthermore, it includes a metal rod fixed to the extension arm, with the portion of the metal rod located on the outside of the extension arm forming the insertion section.

[0018] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0019] 1. This utility model uses a detachable extension arm as an extension component. When the extension arm is removed, the user can use the fitness device as a leg toning device. When the extension arm is installed at the ends of the left and right support arms, the user can hold the extension arm for arm strength training. Because of the extension arm design, the support pad does not interfere with the user's grip on the extension arm during arm strength training, and since the support pad is located on the outside of the extension arm, it also does not interfere with the user's arm strength training, providing a better training experience. Of course, with the extension arm installed, it can also be used as a leg toning device. The two supports rest against the inner thighs, and the user can hold the extension arm for assistance, reducing the load on the thighs. Various training methods are available, and users can adjust them to achieve the best training results.

[0020] 2. The extension arm of this utility model is locked by a support pad. Moving or rotating the support pad separates the engaging part and the connecting part, allowing the insertion section of the extension arm to be removed from the insertion hole. Because the extension arm is locked by the support pad, the user cannot drive the support pad when using the extension arm for arm strength training. Therefore, the extension arm will not accidentally detach from the left and right support arms, ensuring the stability of the product.

[0021] 3. To allow the support pad to adapt to more exercise positions, this utility model features a rotating support pad that rotates around a pivot. Users can maintain different tilt angles by positioning the second protrusion of the support pad within different retaining parts. The more retaining parts the manufacturer provides, the greater the rotation angle of the support pad. Furthermore, rotating the support pad causes the engaging and connecting parts to separate, allowing the extension arm's insertion section to be removed from the insertion hole. In other words, the user can remove the extension arm simply by rotating the support pad. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0023] Figure 2 This is the second structural schematic diagram of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 4 yes Figure 3 A magnified structural diagram at point A;

[0026] Figure 5 This is one of the structural schematic diagrams of the extension arm in the separated state of this utility model;

[0027] Figure 6 yes Figure 5 A magnified structural diagram at point B;

[0028] Figure 7 This is the second structural schematic diagram of the extension arm in the separated state of this utility model;

[0029] Figure 8 This is one of the exploded structural diagrams of this utility model;

[0030] Figure 9 yes Figure 8 A magnified structural diagram at point C;

[0031] Figure 10 This is the second exploded structural diagram of this utility model;

[0032] Figure 11 yes Figure 10 A magnified structural diagram at point D.

[0033] In the diagram: 1-Left support arm; 10-Torsion spring; 11-First protrusion; 111-Guide surface of the first protrusion;

[0034] 112-First protrusion holding part; 113-Recess; 12-First protrusion holding part; 19-Positioning recess; 2-Right support arm; 3-Support pad; 31-Rotating shaft; 32-Second protrusion; 321-Second protrusion guide surface;

[0035] 322-Second protrusion holding part; 323-Protrusion; 33-Second protrusion retaining part; 35-Plug-in post; 38-Nut; 39-Decorative cover; 4-Extension arm; 41-Metal rod; 411-Plug-in section; 412-Entry slot; 413-Connecting hole; 49-Positioning protrusion; 9-Spring. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1-11 As shown:

[0037] A fitness device with detachable extension arms includes a left arm 1 and a right arm 2 hinged together. An elastic element is provided at the hinge point of the left arm 1 and the right arm 2, providing a force to keep the left and right arms extended. The elastic element is attached to... Figure 3 The diagram shows a torsion spring 10, which applies force to the left support arm 1 and the right support arm 2. Alternatively, other elastic components can be used, such as a compression spring between the left and right support arms, with its ends abutting against the left and right support arms respectively, keeping them extended. Both the left and right support arms 1 and 2 are equipped with support pads 3. Each support arm 1 and 2 includes a detachable extension arm 4, which can be fixed to the end of the support arm 1 and right support arm 2. With the extension arm 4 removed, the user can use the support pads 3 for leg exercises; with the extension arm 4 installed, the user can hold the extension arm 4 for arm strength exercises; with the extension arm installed, the user can also use the support pads for leg exercises, holding the extension arm for assistance to reduce the load on the legs as needed.

[0038] The ends of the left support arm 1 and the right support arm 2 have insertion holes, into which the insertion section 411 of the extension arm can extend. The support pad 3 has an engaging part, and the insertion section of the extension arm has a connecting part that engages with the engaging part. The engaging part and the connecting part are fixed together, and the extension arm 4 is fixed to the left support arm 1 or the right support arm 2. Moving or rotating the support pad 3 separates the engaging part and the connecting part, allowing the insertion section 411 of the extension arm to be removed from the insertion hole. When used as an arm exerciser or a leg shaping device, the user will not drive the support pad away from the left and right support arms. Therefore, the support pad acts as a locking element, ensuring that the extension arm will not accidentally detach from the left and right support arms during use, guaranteeing safety. No additional unlocking components are needed, simplifying the product structure and making the product more aesthetically pleasing. The attached diagram only shows the method of locking the insertion section with the support pad; in reality, there are other methods to limit the insertion section and keep it within the insertion hole. For example, the plug-in section is equipped with a spring-loaded latch, and the plug-in hole has a hole that mates with the spring-loaded latch. After the extension arm is installed, the spring-loaded latch is locked in the corresponding hole. The extension arm can be removed by pressing the spring-loaded latch in the hole. The engagement method between the spring-loaded latch and the corresponding hole is a structure that is easily implemented by those skilled in the art, therefore, this structure is not shown in the accompanying diagram. Another example: the left and right support arms are equipped with pins, and the extension arm has a hole that mates with the pin. After the extension arm is installed, the pin can be engaged in the corresponding hole. Any method that allows for the detachment and connection of the extension arm and the left / right support arm is acceptable.

[0039] The support pad 3 is attached to the left or right support arm 2 by an elastic element that provides a force that causes it to adhere to the left or right support arm 1. Without external force, the support pad 3 adheres to the left or right support arm 1 or 2, and the engaging and connecting parts are fixed together. Overcoming the elastic element causes the support pad to move away from the left or right support arm, causing the engaging and connecting parts to separate, allowing the extension arm to be removed from the left or right support arm. The elastic element can be a common elastic component such as a spring or soft rubber.

[0040] The system includes a rotating shaft 31, a support pad 3 rotatably mounted on the rotating shaft 31, and an elastic element provided on the rotating shaft 31 or the support pad 3. The support pad 3 moves along the rotating shaft 31 away from the left or right support arm, and the engaging part and the connecting part separate. The position of the elastic element is determined by the manufacturer, as long as it applies a force to the support pad near the left or right support arm. Preferably, the rotating shaft has a threaded section, which is fixed to the support pad or the left or right support arm by a nut 38. A decorative cover 39 is also provided to cover the rotating shaft 31 and / or the nut 38.

[0041] The connecting part of the extension arm plug section 411 is a connecting hole 413, and the engaging part of the support pad is a plug post 35, which can extend into the connecting hole 413.

[0042] The insertion hole is provided with a positioning recess 19, and the extension arm 4 is provided with a positioning protrusion 49. When the extension arm is installed in place, the positioning protrusion 49 is limited within the positioning recess 19, preventing the extension arm 4 from rotating relative to the insertion hole. Furthermore, the connection hole 413 reaches the designated position for mating with the insertion post. This structure achieves effective positioning, allowing the extension arm to be effectively positioned, thereby effectively locking the connection hole of the extension arm in its internal position.

[0043] The side of the connecting hole has an inlet slot 412. The width of the inlet slot is less than the outer diameter of the plug or its widest position, and the plug cannot detach from the inlet slot. The width of the inlet slot is greater than the outer diameter of the pivot of the support pad, and the pivot 31 of the support pad can freely enter and exit the inlet slot 412. The inlet slot avoids the pivot from interfering with the locking of the plug hole.

[0044] The end of the inlet slot is provided with a guide portion, preferably an arc-shaped surface or a slope. The guide portion can push the plug-in post away from the left or right support arm, so that the plug-in section of the extension arm is installed in place, and the plug-in post enters the connection hole along the inlet slot. That is, the guide portion can push the plug-in post to move, and the user only needs to push the extension arm into the plug-in holes of the left and right support arms. When the positioning protrusion is limited within the positioning recess, the extension arm is installed in place.

[0045] The left support arm 1 and right support arm 2 are surrounded by a plurality of first protrusions 11 at the positions where they connect to the support pad, and a first protrusion holding portion 12 is formed between the first protrusions 11; the support pad 3 is provided with a second protrusion 32 at the position where it connects to the left / right support arm, and the second protrusion 32 can be held in any of the first protrusion holding portions 12 under the action of an elastic element. The second protrusion 32 is located in different first protrusion holding portions 12, and the support pad 3 maintains different tilt angles; the number of first protrusion holding portions 12 is determined by the manufacturer. The more the number, the more angles the support pad can maintain. The attached figure shows four first protrusion holding portions 12, so the support pad can be held in both vertical and horizontal states.

[0046] The first protrusion 11 and the second protrusion 32 are provided with a first protrusion guide surface 111 and a second protrusion guide surface 321. When the support pad 3 is rotated, under the action of the first protrusion guide surface 111 and the second protrusion guide surface 321, the support pad 3 can move along the guide surfaces, thereby moving the support pad 3 away from the left / right support arm. Simultaneously, the biting part and the connecting part separate, allowing the insertion section 411 of the extension arm to be moved out of the insertion hole. By providing guide surfaces, the user only needs to rotate the support pad to separate the biting part and the connecting part. Of course, the user can also achieve separation by pulling the support pad and moving it away from the left and right support arms. The specific method of use is determined by the user.

[0047] The upper end of the first protrusion 11 is provided with a first protrusion stop portion 112. By rotating the support pad 3, the second protrusion 32 can stop on the first protrusion stop portion 112, and the engaging portion and the connecting portion remain in a separated state. Preferably, the second protrusion is also adapted to be provided with a second protrusion stop portion 322. Under the action of the guide surface, the first protrusion stop portion 112 and the second protrusion stop portion 322 abut face to face. By providing the stop portion, the user can more conveniently install and remove the extension arm.

[0048] The extension arm 4 is equipped with a metal rod 41, which is fixed to the extension arm 4. The portion of the metal rod 41 located on the outside of the extension arm is the insertion section 411. The metal rod 41 increases the strength of the extension arm 4.

[0049] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A fitness device with detachable extension arms, comprising a left arm and a right arm hinged together, wherein an elastic element is provided at the hinge position of the left and right arms, the elastic element providing a force to keep the left and right arms extended; a support pad is provided on both the left and right arms; characterized in that: The left and right support arms include detachable extension arms that can be fixed to the ends of the left and right support arms. The ends of the left and right support arms have insertion holes, and the insertion section of the extension arm can extend into the insertion holes; The support pad is provided with an engaging part, and the insertion section of the extension arm is provided with a connecting part that mates with the engaging part. The engaging part and the connecting part are fixed together, and the extension arm is fixed on the left or right support arm. When the support pad is moved or rotated, the engaging part and the connecting part separate, and the insertion section of the extension arm can be moved out of the insertion hole. Alternatively, the insertion section is provided with a spring buckle, and the insertion hole is provided with a hole that mates with the spring buckle. After the extension arm is installed in place, the spring buckle is limited in the corresponding hole. The extension arm can be removed by pressing the spring buckle located in the hole.

2. The fitness device with a detachable extension arm according to claim 1, characterized in that: It includes an elastic element that provides a force to the support pad to adhere to the left or right support arm; when not subjected to external force, the support pad adheres to the left or right support arm, and the interlocking part and the connecting part are fixed together.

3. The fitness device with a detachable extension arm according to claim 2, characterized in that: It includes a rotating shaft, a support pad rotatably mounted on the rotating shaft, and the elastic element is provided on the rotating shaft or the support pad. The support pad moves along the rotating shaft in a direction away from the left or right support arm, and the engaging part and the connecting part separate.

4. The fitness device with a detachable extension arm according to claim 1, 2, or 3, characterized in that: The connecting part of the extension arm plug section is a connecting hole, and the interlocking part of the support pad is a plug-in post, which can extend into the connecting hole.

5. The fitness device with a detachable extension arm according to claim 4, characterized in that: The insertion hole is provided with a positioning recess, and the extension arm is provided with a positioning protrusion. When the extension arm is installed in place, the positioning protrusion is limited within the positioning recess, the extension arm cannot rotate relative to the insertion hole, and the connection hole reaches the designated position to cooperate with the insertion post.

6. The fitness device with a detachable extension arm according to claim 4, characterized in that: The side of the connecting hole has an inlet slot. The width of the inlet slot is less than the outer diameter of the plug or the widest position, and the plug cannot be disengaged from the inlet slot. The width of the inlet slot is greater than the outer diameter of the pivot of the support pad, and the pivot of the support pad can freely enter and exit the inlet slot.

7. The fitness device with a detachable extension arm according to claim 6, characterized in that: The end of the inlet slot is provided with a guide part, which can push the plug-in post away from the left or right support arm. The plug-in section of the extension arm is installed in place, and the plug-in post enters the connection hole along the inlet slot.

8. The fitness device with a detachable extension arm according to claim 1, 2, 3, 5, 6, or 7, characterized in that: The left and right support arms are provided with a plurality of first protrusions around the position where they connect to the support pad, and a retaining portion is formed between the first protrusions; the support pad is provided with a second protrusion at the position where it connects to the left / right support arm, and the second protrusion can be held in any retaining portion under the action of an elastic member. When the second protrusion is located in different retaining portions, the support pad maintains different tilt angles. The first protrusion and / or the second protrusion are provided with guide surfaces. When the support pad is rotated, the support pad can move along the guide surfaces under the action of the guide surfaces, thereby moving the support pad away from the left support arm / right support arm. At the same time, the interlocking part and the connecting part separate, and the insertion section of the extension arm can be moved out from the insertion hole.

9. The fitness device with a detachable extension arm according to claim 8, characterized in that: The upper end of the first protrusion is provided with a stopping part. When the support pad is rotated, the second protrusion can stay on the stopping part, and the biting part and the connecting part remain in a separated state.

10. The fitness device with a detachable extension arm according to claim 1, 2, 3, 5, 6, 7, or 9, characterized in that: It includes a metal rod, which is fixed to the extension arm, and the portion of the metal rod located on the outside of the extension arm is the plug-in section.

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