Positioning pin, adjusting seat safety protection mechanism and fitness equipment

Abstract

The utility model discloses a locating pin, an adjusting seat safety protection mechanism and fitness equipment, and relates to the technical field of fitness equipment, the locating pin comprises a pin body, the pin body is radially provided with a concave part close to the first end, the first end of the pin body is provided with a rigid convex part radially protruding out of the concave part, and the rigid convex part is provided with an elastic part. When the positioning pin is inserted into a positioning hole of the fitness equipment and is subjected to acting force perpendicular to the radial direction, the concave part can be clamped at the hole edge of the positioning hole, so that the pin body is limited to be pulled out of the positioning hole through the groove wall of the concave part and the hole edge of the positioning hole, and the pin body cannot be directly separated from a corresponding hole position; related instruments in the fitness equipment are controlled all the time, the adjusting process of the related instruments is safe and convenient, and the safety problem caused by misoperation of the positioning pin is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a positioning pin, an adjustment seat safety protection mechanism and fitness equipment. Background Art

[0002] In the related technologies of fitness equipment, the adjustment of the force-applying components of the equipment mainly involves the adjustment of the load, resistance, angle, height, position, etc. of the equipment to meet the exercise needs of different users. By assembling the adjustment component with the fitness equipment, the position adjustment of the adjustment component can be achieved. In order to ensure the stability and safety of the fitness equipment during use, corresponding holes are generally set between the relevant equipment and the main body of the equipment, so that the relevant equipment can be locked and unlocked before and after adjustment by plugging and unplugging the pins between the corresponding holes.

[0003] When the fitness equipment is in use, the adjustment component is provided with a pull cord for connecting the resistance source and related equipment. The adjustment component always tends to move in the direction of the pull cord due to the pull cord. Since the pin always provides a position for the user to plug and unplug, there is a certain possibility of misoperation. Therefore, if the pin is misoperated or pulled out from the corresponding hole under the tension applied to the adjustment component by tension training, the related equipment will be freed from the constraint of the pin, resulting in high-speed movement of the related equipment on the main body of the equipment, which poses a certain safety hazard. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a positioning pin, an adjustment seat safety protection mechanism and fitness equipment to solve the safety problem caused by the positioning pin being easily separated due to misoperation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, a positioning pin is provided, comprising:

[0007] The pin body is radially provided with a recessed portion near its first end, the first end of the pin body is formed with a rigid convex portion radially protruding from the recessed portion, and the second end of the pin body is provided with an operating portion for controlling the insertion and extraction of the positioning pin.

[0008] The freedom of movement of the pin body in the direction of pulling out of the positioning hole can be constrained by the recessed portion, thereby preventing the pin body from being separated from the positioning hole due to misoperation of the positioning pin by the user, thereby improving the safety of the positioning pin in use.

[0009] In a second aspect, an adjustment seat safety protection mechanism is provided, comprising:

[0010] A base, the base having a guide structure for being movably connected to the frame, and a first pin hole penetrating through the guide structure is formed on the base; and

[0011] The positioning pin according to the first aspect, wherein the pin body is used to be inserted into the positioning hole of the frame, the pin body is movably arranged on the seat body, and the pin body has a locked state in which the first end thereof is inserted into the first pin hole, and an unlocked state in which the first end thereof is withdrawn from the first pin hole;

[0012] When the pin body is in a locked state, at least a portion of the recessed portion is used to abut against the inner surface of the positioning hole of the frame, and the rigid protrusion passes through the positioning hole and is projected along the axial direction of the pin body. At least a portion of the rigid protrusion is located on the outer peripheral side of the positioning hole.

[0013] The positioning pin is installed on the seat body so that the positioning pin can make adjustment movements with the seat body, which not only improves the structural integrity and compactness of the mechanism, but also makes the operation process of the positioning pin more convenient.

[0014] In a third aspect, a fitness equipment is provided, comprising:

[0015] The frame is of a centrally-through structure, and the frame is provided with positioning holes that penetrate the inside and the outside of the frame; and

[0016] According to the safety protection mechanism for the adjustment seat as described in the second aspect, the seat body is movably arranged on the frame through the adjustment part, and the first end of the pin body can be inserted from the outside of the frame into the inside of the frame through the positioning hole, and can be pulled out from the inside of the frame through the positioning hole to the outside of the frame;

[0017] When the pin body is in a locked state, at least part of the recessed portion abuts against the inner surface of the positioning hole of the frame, the rigid protrusion passes through the positioning hole and is projected along the axial direction of the pin body, and at least part of the rigid protrusion is located on the outer peripheral side of the positioning hole.

[0018] When the locating pin is subjected to a force in a direction perpendicular to the axis of the pin body, the recessed portion can be stuck at the edge of the locating hole, thereby limiting the pin body from being pulled out of the locating hole through the groove wall of the recessed portion and the edge of the locating hole. The pin body cannot directly detach from the corresponding hole position, so that the relevant equipment in the fitness equipment is always under control, and the adjustment process of the relevant equipment is safe and convenient, and safety problems caused by misoperation of the locating pin will not occur.

[0019] The beneficial effects of the utility model are as follows: the locating pin is radially provided with a recessed portion near its first end so that when the locating pin is inserted into the locating hole of the fitness equipment and the pin body is subjected to a force in a radial direction, the pin body can be stuck at the hole edge of the locating hole of the frame through the recessed portion. Under the joint constraints of the inner side wall of the recessed portion and the hole edge of the locating hole, the pin body cannot directly withdraw from the locating hole. Only when the user pushes the pin body to move away from the direction in which it is subjected to force and the recessed portion is separated from the hole edge of the locating hole, the pin body can be withdrawn from the locating hole. This ensures that the relevant equipment in the fitness equipment is always under control, and the adjustment process of the relevant equipment is safe and convenient, and safety problems caused by misoperation of the locating pin will not occur.

[0020] The rigid convex portion formed at the first end of the pin body enables the pin body to form a stable fitting relationship with the positioning hole when inserted into the positioning hole, thereby avoiding a situation where the end of the pin body is greatly deformed and causes it to still escape from the positioning hole, thereby ensuring that the pin body and the positioning hole are stably fitted when the fitness equipment is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below based on the drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the safety protection mechanism of the adjustment seat according to the embodiment of the utility model;

[0023] Figure 2 This is an exploded view of the safety protection mechanism of the adjustment seat according to the embodiment of the utility model;

[0024] Figure 3 This is a cross-sectional view of the safety protection mechanism of the adjustment seat described in the embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the partial structure of the fitness equipment according to the embodiment of the utility model;

[0026] Figure 5 This is one of the partial structural cross-sectional views of the fitness equipment described in the embodiment of the utility model;

[0027] Figure 6 This is the second partial structural cross-sectional view of the fitness equipment described in the embodiment of the utility model.

[0028] In the figure: 10, pin body; 11, recessed portion; 12, rigid convex portion; 13, operating portion; 14, first limiting portion; 15, stopping portion; 20, seat body; 21, adjusting portion; 22, first pin hole; 30, pin seat; 31, second pin hole; 311, second limiting portion; 32, positioning seat; 40, elastic reset component; 50, pulley assembly; 51, pulley; 52, through hole; 60, frame; 61, positioning hole. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model are further described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] Fitness equipment is an important tool used to assist physical exercise and enhance physical function. They are of various types and have their own characteristics, which can meet the needs of different groups of people and different training goals.

[0033] As a type of fitness equipment, strength training equipment is mainly used to enhance muscle strength, shape body lines and improve muscle endurance. Common strength training equipment can, but is not limited to, assist users in performing various training movements, such as squats, bench presses, deadlifts, etc.

[0034] In order to perform more diverse training programs as much as possible in a limited space, some users generally choose to use a power station, which is also called a comprehensive training rack. It is a fitness equipment designed specifically for strength training. It integrates multiple functions in one, thus providing users with a comprehensive and efficient training platform. In terms of function, the power station covers almost all strength training movements. Users can perform squats, deadlifts, bench presses, bent-over rows, pull-ups and other training to achieve the purpose of comprehensively exercising all parts of the body. In addition, some power stations also provide variable resistance through motors for users to perform various resistance training on the power stations, further increasing the diversity of training.

[0035] In order to provide a variety of training programs, the design of the strength station often requires relatively high structural strength and structural stability. In one embodiment, the structure of the strength station generally includes one or more columns and beams, which are connected to form a stable frame, and equipment for providing different training programs is installed on the frame so that users can perform various strength training movements within the frame.

[0036] The above-mentioned equipment and frames are generally equipped with a variety of accessories and adjustable devices to meet the training needs of different users. For example, the relevant equipment includes but is not limited to adjustable barbell racks, hooks, pull ropes, etc. Users can adjust the relative position of the relevant equipment and themselves according to their training goals and physical conditions to achieve good training effects.

[0037] It can be understood from the above examples that the adjustment of the training equipment of the power station mainly involves the adjustment of the load, resistance, angle, height, position, etc. during the training process to meet the exercise needs of different users. By assembling the adjustment component with the fitness equipment, the position adjustment of the adjustment component can be achieved. In order to ensure the stability and safety of the power station and related equipment during use, corresponding holes are generally set between the related equipment and the main body of the power station (which can be understood as the above-mentioned frame), so that the related equipment can be locked and unlocked before and after adjustment by plugging and unplugging the pins between the corresponding holes.

[0038] When the power station is in use, especially during heavy load and resistance training, the user repeatedly performs training movements, and a large interaction force is generated between the training equipment and the main body of the power station. The adjustment component is provided with a pull rope for connecting the resistance source and related equipment. The adjustment component is always pulled in the direction of the pull rope. Due to the poor matching stability between the pin and the corresponding hole, and the pin always provides a position for the user to plug and unplug, there is a high possibility of misoperation of the pin in the above process. If the pin is misoperated or pulled out of the corresponding hole under the tension applied to the adjustment component by tension training, the training equipment will be free from the constraint of the pin, resulting in high-speed movement of the training equipment on the main body of the power station, and the force generated by the high-speed movement is directly applied to the corresponding part of the user through the force-applying component, resulting in a high probability of injury to the user, posing a great safety hazard.

[0039] In view of this, the present embodiment provides a positioning pin, which is a part that participates in limiting the freedom of an object and is mainly used to determine the position in two-dimensional space. By changing the structure of the pin body, the pin body can form a constraint relationship with the corresponding component structure in the axial direction when subjected to a radial force from a specific direction, thereby preventing the positioning pin from being pulled out of the corresponding component due to misoperation, thereby ensuring the safety of the fitness equipment in use.

[0040] Please refer to the attached Figure 1-Figure 3 The positioning pin includes a pin body 10, which serves as the main structure of the positioning pin, and the rest is usually cylindrical.

[0041] Specifically, the pin body 10 is provided with a recessed portion 11 near its first end on its radial force-bearing side. It should be explained that the radial force-bearing side refers to the force-bearing surface or force-bearing area in the direction perpendicular to the axis of the pin body 10. It can also be understood as the part of the pin body 10 that is used to bear the corresponding force when the pin body 10 is subjected to a force perpendicular to its axis. The position of the radial force-bearing side of the pin body 10 mainly depends on the design and purpose of the locating pin, its position in the assembly, and the force conditions under use. For example, in Figure 3 , Figure 5-Figure 6 In the case shown, the lower side of the pin body 10 abuts against the relevant component (frame 60), and thus, the lower side of the pin body 10 is defined as its radial force-bearing side. In other cases, the pin body 10 may also abut against the relevant component by its upper side or other side portion to achieve locking between components, and in this case, its upper side or other side portion used to abut against the relevant component is defined as its radial force-bearing side.

[0042] It should be understood that the radial force-bearing side of the pin body 10 is crucial to determining its size, material and manufacturing process. Its size is compatible with the pin holes provided by related components so that it can normally realize the plugging and unplugging operations with the corresponding pin holes, and its material and manufacturing process should ensure that the pin body 10 has sufficient structural strength to ensure that the pin body 10 can withstand the expected radial force and maintain structural stability and safety when in use.

[0043] According to the structural form provided by the above pin body 10, since the recessed portion 11 is arranged close to the first end of the pin body 10, it is not actually arranged at the end position of the pin body 10. Therefore, the first end of the pin body 10, that is, the side of the recessed portion 11 axially away from the second end of the pin body 10, is formed with a rigid protrusion 12 radially protruding from the recessed portion 11.

[0044] In one embodiment, the rigid protrusion 12 serves as a part of the pin body 10. It can be formed by machining a recessed portion 11 on the radial force-bearing side of the pin body 10 (such as by milling, laser cutting, electric spark, etc.) after the pin body 10 is machined and formed, or it can be formed in a process where the pin body 10 and the recessed portion 11 are integrally formed (such as by die casting, molding, etc.).

[0045] Of course, in other embodiments, the rigid protrusion 12 can also be used as a component independent of the pin body 10. After the pin body 10 is processed and formed, it is subsequently arranged on the pin body 10 through assembly connection methods such as welding and bonding, so that the rigid protrusion 12 forms the above-mentioned recessed portion 11 on one side in the axial direction (the side of the rigid protrusion 12 close to the second end of the pin body 10 along the axial direction).

[0046] It can be understood from the characteristic name of the rigid protrusion 12 that it is generally made of a material with high rigidity and a certain ability to resist tangential torque. The definition of rigidity in this embodiment is that when the rigid protrusion 12 is subjected to external force, its shape and size remain almost unchanged. In addition, in order to make the overall structure of the positioning pin stable, thereby ensuring the stability and safety of the fitness equipment during use, the pin body 10 is also made of a rigid material, so as to avoid the rigid protrusion 12 under the action of external force, and when the corresponding force is transmitted to the pin body 10 through the rigid protrusion 12, the pin body 10 generates a large stress deformation, causing the positioning pin to be separated from the corresponding hole.

[0047] In one embodiment, the second end of the pin body 10 (the end of the pin body 10 axially away from the rigid protrusion 12) is provided with an operating portion 13 for controlling the insertion and extraction of the positioning pin. Generally, the operating portion 13 is usually composed of a raised head, and its main function is to provide a convenient handle during the installation process so that the operator can hold the pin body 10 and insert it into the two parts to be connected or remove it from the corresponding parts. As for the specific structural form of the operating portion 13, this embodiment has no strict limitation, so it will not be further described here.

[0048] Below, combined with the above content and the attached Figure 4-Figure 6 As a corresponding exemplary explanation, when the pin body 10 is inserted into the positioning hole 61 of the fitness equipment, the pin body 10 will be under the action of gravity, or under the interaction force between the fitness equipment and the adjustment seat (which can be understood as the seat body 20 described in the subsequent content). For example, during training, the resistance source applies resistance to the pull rope, allowing the pull rope to act on the adjustment seat. The force acting on the adjustment seat makes the adjustment seat have a tendency to produce relative displacement along the frame 60 of the fitness equipment from beginning to end, so that the pin body 10 is subjected to a force in the direction of the radial force-bearing side. For example, as shown in Figure 5, the pin body 10 is subjected to a force from top to bottom and its lower side is defined as the radial force-bearing side, that is, the recessed portion 11 is opened on the lower side of the pin body 10. At this time, the pin body 10 is against the lower hole edge of the positioning hole 61 through the groove bottom of the recessed portion 11, and the rigid protrusion 12 is located on the inner side of the positioning hole 61 (the side of the positioning hole 61 away from the positioning pin) and is blocked by the side wall of the fitness equipment used to form the positioning hole 61. The freedom of the pin body 10 in the pulling-out direction (the freedom to move from the inside of the positioning hole 61 to the outside) is constrained by the rigid protrusion 12 and the side wall of the fitness equipment. That is to say, in this state, if the pin body 10 is subjected to a force in the direction of pulling out the positioning hole 61 (the force comes from: 1. In the training state, it is the horizontal component of the force applied by the pull rope to the adjustment seat (seat body 20). 2. In the non-training state, it is generally the force provided by the artificial pulling out of the pin body 10), the rigid protrusion 12 (which can also be understood as the groove wall of the recessed portion 11) will press against the side wall on the lower side of the positioning hole 61, thereby preventing the positioning pin from being further pulled out. In addition, in this process, since the deformation of the rigid protrusion with the increase of the axial force is small, the deformation it produces is not enough to allow the pin body 10 to escape from the positioning hole 61, thereby ensuring that the positioning pin is stably located in a state of being inserted into the positioning hole 61, thereby achieving the purpose of improving the stability between the adjustment seat and the fitness equipment.

[0049] In summary, the positioning pin is provided with a recessed portion 11 near the first end thereof on the radial force-bearing side of the pin body 10, so that when the pin body 10 is inserted into the positioning hole 61 of the fitness equipment and subjected to a force in the direction perpendicular to the axis of the pin body 10, the pin body 10 can be stuck at the edge of the positioning hole 61 through the recessed portion 11, thereby constraining the freedom of movement of the pin body 10 in the direction of pulling out of the positioning hole 61 through the matching relationship between the rigid protrusion (the groove wall of the recessed portion 11) and the edge of the positioning hole 61. In addition, as the strength of the resistance and tension of the training item increases, the interaction force generated between the adjustment seat and the frame 60 of the fitness equipment will gradually increase. Therefore, the pressing force between the pin body and the edge of the positioning hole 61 will also increase accordingly, thereby further improving the matching strength between the positioning pin and the fitness equipment. The greater the training intensity, the less likely the positioning pin will be pulled out of the fitness equipment, thereby eliminating the possibility of user misoperation, reducing the risk of user injury, and ensuring the personal safety of the user.

[0050] It is also worth mentioning that when the positioning pin is used in fitness equipment, the positioning hole 61 provided on the fitness equipment needs to ensure that the first end of the pin body 10 can be smoothly inserted and removed. Therefore, the size of the positioning hole 61 must be set to be larger than the size of the first end of the pin body 10. For this reason, Figure 5 As shown, when the pin body 10 is inserted into the positioning hole 61 and the pin body 10 is against the lower hole edge of the positioning hole 61 through the recessed portion 11 on the lower side, a large gap is formed between the upper side of the pin body 10 and the upper hole edge of the positioning hole 61. The gap is sufficient to allow the pin body 10 to move from bottom to top so that the lower hole edge of the positioning hole 61 can smoothly break away from the constraint of the recessed portion 11. Therefore, as shown in FIG. Figure 6 As shown, when the user needs to smoothly pull out the locating pin from the locating hole 61, he must apply a force from bottom to top to the pin body 10 (a force in the direction away from the radial force side) to make the pin body 10 move in the direction away from the radial force side until the recessed portion 11 is separated from the edge of the locating hole 61. The pin body 10 can be pulled out from the locating hole 61. The process of pulling out the locating pin is not just about applying a force in the pulling-out direction to the pin body 10, which adds a certain degree of difficulty and operation steps to the process of pulling out the locating pin. This ensures that the relevant equipment in the fitness equipment is always under control, and the adjustment process of the relevant equipment is safe and convenient, and there will be no safety problems caused by misoperation of the locating pin.

[0051] The rigid protrusion 12 formed at the first end of the pin body 10 can form a stable fitting relationship between the pin body 10 and the positioning hole 61 when the pin body 10 is inserted into the positioning hole 61, thereby avoiding a situation where the end of the pin body 10 is greatly deformed and still detached from the positioning hole 61, thereby ensuring that the pin body 10 and the positioning hole 61 are stably fitted when the fitness equipment is in use.

[0052] Please continue to refer to the attached Figure 1-Figure 3 This embodiment also provides an adjustment seat safety protection mechanism, which adopts the positioning pin provided in the above embodiment and includes a seat body 20, which is configured to be movably connected to the frame 60 of the fitness equipment, and can implement relative fixation between the seat body 20 and the frame 60 of the fitness equipment through the positioning pin.

[0053] In the application of fitness equipment (power station), the seat 20 is located on the frame 60 of the fitness equipment, allowing the user to adjust its relative position according to personal height, body shape and training needs, so as to ensure the comfort and effectiveness of training. For example, when the seat 20 is arranged to be movably mounted on the frame 60 along the height direction, the user can adjust the height position of the seat 20 on the frame 60 according to his own height, body shape and training items, so as to flexibly adapt to the needs of different users. By adjusting the height of the seat 20, the user can ensure that the position of the equipment maintains an appropriate distance and angle with the body when performing squats, bench presses, deadlifts and other movements, thereby avoiding unnecessary sprains or strains.

[0054] Specifically, a guide structure 21 is disposed on the inner side of the seat 20. In the application of the fitness equipment (the aforementioned power station), the seat 20 can be movably matched with the frame 60 of the fitness equipment through the guide structure 21. The structure of the guide structure 21 can be determined according to the structure of the frame 60 position where the seat 20 is to be set. For example, as shown in FIG. Figure 6 As shown, when the seat 20 needs to be movably set on the column of the frame 60 of the frame structure, the seat 20 can be movably set on the column to achieve stable cooperation with the column. At this time, the guide structure 21 can be an inner cavity formed by penetrating the opposite sides of the seat 20, and the inner cavity structure can be adapted to the cross-sectional shape of the column, so that when the seat 20 is set on the column, that is, the column is in the inner cavity, the friction between the cavity wall of the inner cavity and the outer surface of the column is small enough to facilitate the sliding adjustment of the seat 20 on the column. Of course, in other embodiments, the adjustment seat can also be set on the above-mentioned crossbeam or other structural components of the fitness equipment (power station) to achieve the purpose of different adjustment functions. Therefore, it can be understood that this embodiment does not have strict restrictions on what components and positions the seat 20 is specifically used to set on the fitness equipment.

[0055] In addition, in other embodiments, the seat 20 may also adopt other structures and matching methods to form a movable match with the fitness equipment. For example, the seat 20 and the frame 60 of the fitness equipment may also be movably connected by a guide rail and a slider. At this time, the guide structure 21 on the seat 20 may be set as the above-mentioned guide rail or slider according to the specific design requirements of the equipment. Therefore, it can be understood that the present embodiment does not make strict requirements and limitations on the specific structural form of the seat 20. It is sufficient as long as the seat 20 can be located in the corresponding direction of the corresponding structural component of the adjustment seat safety protection mechanism when the fitness equipment is in use. In this way, the guide structure 21 can be located in the relevant component for active adjustment in a specific direction, and can also restrict the position of the seat 20 on the relevant structural component, thereby preventing the seat 20 from being separated from the fitness equipment to a certain extent.

[0056] Please continue to refer to the attached Figure 3 , Figure 5-Figure 6 In order to provide a corresponding insertion and extraction position for the positioning pin, the seat body 20 is also provided with a first pin hole 22 that runs through its inner and outer sides (through the guide structure 21). It should be explained that the inner and outer sides here do not refer to the inner and outer sides in the true sense, but can be understood as the opposite sides of the seat body 20 on a certain physical structure. Taking the specific structural form provided in the accompanying drawings as an example, the inner side described in this embodiment refers to the "inner" direction indicated by the arrow in the accompanying drawings, and correspondingly, the outer side described in this embodiment refers to the "outer" direction indicated by the arrow in the accompanying drawings. In the application of fitness equipment, the inner side of the seat body 20 is arranged close to the fitness equipment, and correspondingly, the outer side of the seat body 20 is the side away from the fitness equipment. Similarly, the inner side of the positioning hole 61 mentioned in the above embodiment refers to the side of the positioning hole 61 away from the seat body 20, and the outer side of the positioning hole 61 refers to the side of the positioning hole 61 close to the seat body 20.

[0057] The pin body 10 of the positioning pin can be movably arranged on the seat body 20, and is used to be inserted into the positioning hole 61 of the frame 60. The operating part 13 is located on the outside of the seat body 20, so as to avoid interference between the user's hand and the seat body 20 or related structural components of the fitness equipment when operating the pin body 10, and facilitate the user to operate the pin body 10. The user can operate the pin body 10 through the operating part 13, so that the first end of the pin body 10 can be inserted into the inner side of the seat body 20 through the first pin hole 22 under the operation of the user, and can be pulled out from the inner side of the seat body 20 through the first pin hole 22 to the first pin hole 22 or the outer side of the seat body 20. It should be explained here that the pin body 10 is pulled out from the inner side of the seat body 20 through the first pin hole 22 to the first pin hole 22 or the outer side of the seat body 20, which refers to the state in which the first end of the pin body 10 is completely pulled out from the positioning hole 61 provided by the fitness equipment, and can also be understood as the state in which the pin body 10 does not protrude from the inner side of the seat body 20.

[0058] According to the above embodiment, it can be understood that the pin body 10 has a locked state in which the first end thereof is inserted into the first pin hole 22, and an unlocked state in which the first end thereof is withdrawn from the first pin hole 22. In the locked state of the pin body 10, at least a portion of the recessed portion 11 is used to abut against the inner surface of the positioning hole 61 of the frame 60, and the rigid protrusion 12 passes through the positioning hole 61 and is projected along the axial direction of the pin body 10, and at least a portion of the rigid protrusion 12 is located on the outer peripheral side of the positioning hole 61.

[0059] The adjusting seat safety protection mechanism sets a positioning pin on the seat body 20 so that the positioning pin can move with the movement of the seat body 20 on the fitness equipment. When the seat body 20 moves to a position where it needs to be locked with the fitness equipment, or when the seat body 20 needs to be unlocked from the fitness equipment and adjusted, the user can directly operate the positioning pin on the seat body 20, which makes the locking and unlocking process of the seat body 20 on the fitness equipment more convenient. The way the positioning pin is installed on the seat body 20 also makes the adjusting seat safety protection mechanism more integrated, the overall structure is more compact and simple, and can also effectively prevent the positioning pin from being lost.

[0060] In addition, the positioning pin is installed on the seat body 20. When the positioning pin needs to be pulled out from the positioning hole 61 provided in the fitness equipment, the positioning pin can move relative to the frame 60 of the fitness equipment together with the seat body 20. Therefore, when the user applies a force away from the radial force-bearing side of the pin body 10 to the seat body 20, the positioning pin can also move away from the radial force-bearing side thereof together with the seat body 20, thereby allowing the hole edge of the positioning hole 61 to be separated from the recessed portion 11 of the pin body 10.

[0061] Compared with the positioning pin, the seat body 20 can obviously provide the user with a larger operating space and force position. Compared with simply operating the positioning pin to disengage from the positioning hole 61, the operation difficulty of controlling the positioning pin through the seat body 20 is lower and the operation process is more convenient.

[0062] For example, continue with Figure 4-Figure 6 Taking the situation provided as an example, when the user needs to smoothly pull out the positioning pin from the positioning hole 61, he can apply a force from bottom to top to the seat body 20, so that the seat body 20 drives the pin body 10 to move in a direction away from the radial force side until the recessed portion 11 is separated from the edge of the positioning hole 61, and the pin body 10 can be pulled out from the positioning hole 61.

[0063] It is understandable that the recessed portion 11 may be disposed around the pin body 10 .

[0064] In one embodiment, the recessed portion 11 is arranged on the radial force-bearing side of the pin body 10, and the opposite ends of the recessed portion 11 are spaced apart in the circumferential direction of the pin body 10 so that the recessed portion 11 is located on the pin body 10 to form a non-closed recessed structure, ensuring that the recessed portion 11 is only arranged on the side of the pin body 10 that acts on the positioning hole 61, to prevent the recessed portion 11 on the other side of the pin body 10 from being stuck in the other side of the hole edge of the positioning hole 61 due to excessively pushing the seat body 20 in the opposite direction of the force direction of the pin body 10 when the user operates the pin body 10 to disengage from the hole edge of the positioning hole 61 through the seat body 20, thereby reducing the difficulty of adjusting the seat body 20 while ensuring the stability of the seat body 20 and the frame 60.

[0065] Specifically, the recessed portion 11 is a groove formed in the pin body 10 near the first end thereof, and the groove wall of the recessed portion 11 near the rigid protrusion 12 constitutes a limiting surface.

[0066] When the pin body 10 is in the locked state, the recessed portion 11 abuts against the inner surface of the positioning hole 61 of the frame 60 through its groove bottom, and the limiting surface of the groove wall on one side of the recessed portion 11 is at least partially located on the axial projection of the hole edge of the positioning hole 61, thereby realizing the constraint of the rigid protrusion 12 on the movement of the pin body 10 to the unlocked state.

[0067] Based on the above implementation, in one embodiment, in order to allow the positioning pin to be stably installed on the seat body 20, as shown in FIG. Figure 1-Figure 3As shown, the adjustment seat safety protection mechanism also includes a pin seat 30. It should be explained that the pin seat 30 is a component for constraining the positioning pin. It is located on the seat body 20 to support and position the pin body 10. In this example, the pin seat 30 is installed on the outside of the seat body 20 to avoid interference between the pin seat 30 and the frame 60 when the seat body 20 is used in the fitness equipment. At the same time, the pin seat 30 is located on the outside of the seat body 20, which is also convenient for the operator to perform the preliminary assembly of the adjustment seat safety protection mechanism and the subsequent inspection, maintenance and replacement.

[0068] Similarly, in order to provide the pin body 10 with a corresponding plugging and unplugging space, the pin seat 30 is provided with a second pin hole 31 that runs through its opposite sides (inside and outside as shown in the figure), wherein the second pin hole 31 is located at a position corresponding to the first pin hole 22 of the seat body 20, so that the first pin hole 22 and the second pin hole 31 are sequentially connected along the inside and outside direction. It should be noted that the pin seat 30 is usually relatively tightly matched with the positioning pin to ensure that the plug pin can be stably installed on the pin seat 30, and at the same time, it is also necessary to ensure that the positioning pin can move axially. Therefore, the matching relationship between the second pin hole 31 and the pin body 10 can be determined according to the design requirements of the safety protection mechanism of the adjustment seat and the fitness equipment.

[0069] It is worth mentioning that the pin seat 30 should also have sufficient strength and rigidity to withstand various forces and moments that may be generated by the positioning pin during use. In addition, the material of the pin seat 30 can also be selected to be made of metal or alloy materials with high strength and wear resistance to ensure that it has a good service life and reliability, reduce the degree of wear of the positioning pin after repeated use, and extend the service life of the mechanism.

[0070] Below, based on the above-mentioned embodiment, when the safety protection mechanism of the adjustment seat is applied to fitness equipment, after the first end of the pin body 10 is pulled out from the positioning hole 61 provided by the fitness equipment, the first end of the pin body 10 can be set to be retracted into the first pin hole 22 or the second pin hole 31. Whether the first end of the pin body 10 is retracted into the first pin hole 22 or the second pin hole 31 depends on whether a part of the structure of the pin seat 30 protrudes from the inner side of the seat body 20 through the first pin hole 22, such as Figure 3As shown, if part of the structure of the pin seat 30 protrudes from the inner side of the seat body 20 (a positioning seat 32 is protruding from the inner side of the pin seat 30, and the positioning seat 32 extends to the position of the inner side of the seat body 20 through the first pin hole 22), the first end of the pin body 10 can move to the second pin hole 31, which is regarded as the positioning pin being separated from the positioning hole 61 of the fitness equipment. If the pin seat 30 is entirely arranged on the outer side of the seat body 20, that is, the pin seat 30 does not have any part protruding from the inner side of the seat body 20 from the first pin hole 22, the first end of the pin body 10 can be retracted into the first pin hole 22, which is regarded as the positioning pin being separated from the positioning hole 61 of the fitness equipment. Of course, whether the seat body 20 and the frame 60 of the fitness equipment are unlocked depends on the distance between the seat body 20 and the frame 60 of the fitness equipment. If the distance is large, the first end of the pin body 10 only needs to move to the position of being separated from the positioning hole 61, and it does not need to further move to the position inside the first pin hole 22 or the second pin hole 31.

[0071] Please refer to the attached Figure 2-Figure 3 The pin body 10 is provided with a first limiting portion 14 between the recessed portion 11 and the operating portion 13. The cross-sectional shape of the pin body 10 at the position where the first limiting portion 14 is provided is non-circular. It should be explained that the non-circular shape generally refers to a geometric shape with a fixed shape and curvature, such as a non-circular or elliptical shape. Of course, the non-circular shape can also be understood as any shape other than a circle, such as other polygonal structures such as a triangle and a rectangle.

[0072] Exemplarily, in the present embodiment, the first limit portion 14 is a positioning table surface arranged along the axial direction of the pin body 10, so as to achieve the purpose of making the cross-sectional shape of the portion of the pin body 10 where the first limit portion 14 is arranged to be non-circular. The first limit portion 14 is arranged along the axial direction of the pin body 10, which can avoid the interference of the pin body 10 with components such as the pin seat 30 or the seat body 20 during the axial movement of the pin body 10, thereby ensuring that the positioning pin can stably realize the plugging and unplugging operation.

[0073] Corresponding to the above structure, a second limiting portion 311 having a shape adapted to the structure of the first limiting portion 14 is provided in the second pin hole 31, and the second limiting portion 311 is located at the position where the first limiting portion 14 is provided on the pin body 10, so that the freedom of rotation of the pin body 10 around its own central axis can be constrained by the pin seat 30 through the limiting matching relationship between the first limiting portion 14 and the second limiting portion 311. That is to say, the cross-sectional shape of the second pin hole 31 at the position where the second limiting portion 311 is provided is a non-circular shape that matches the cross-sectional shape of the pin body 10 at the position where the first limiting portion 14 is provided.

[0074] Such a configuration can ensure that the pin body 10 can be movably inserted into the second pin hole 31 along the axial direction, and the second pin hole 31 can also cooperate with the first limiting portion 14 of the pin body 10 through the second limiting portion 311, so as to constrain the freedom of the pin body 10 in the rotation direction around its own axis, thereby avoiding the position change of the recessed portion 11 in the outer circumferential direction of the pin body 10, so that the recessed portion 11 is located at a position deviating from the radial force side of the pin body 10. This will cause the pin body 10 to be inserted into the positioning hole 61 provided by the fitness equipment. When the pin body 10 is subjected to the force in the direction of the radial force side, the hole extension of the positioning hole 61 cannot be smoothly inserted into the recessed portion 11, and the axial limiting cooperation between the pin body 10 and the positioning hole 61 fails.

[0075] According to the above-mentioned embodiment in which the first limiting portion 14 is a positioning table surface provided along the axial direction of the pin body 10 , the second limiting portion 311 is a limiting surface provided in the second pin hole 31 and corresponding to the positioning table surface.

[0076] According to the above content, in order to ensure the normal insertion and extraction of the positioning pin, the first limiting portion 14 can move relative to the second limiting portion 311 along the axial direction of the pin body 10 during the insertion and extraction movement of the pin body 10 along the axial direction, and the first limiting portion 14 and the second limiting portion 311 are limited in the direction of the rotation of the pin body 10 around its own central axis. It is worth mentioning that, in general, the pin seat 30 can be fixed to the seat body 20 by screw threading, or the seat body 20 and the pin seat 30 can be relatively fixed by welding, bonding or other related fixing methods.

[0077] In one embodiment, in order to improve the matching strength between the seat body 20 and the pin seat 30 on the basis of the above, and at the same time reduce the difficulty of assembly between the pin seat 30 and the seat body 20, the pin seat 30 is used to be assembled on one side of the seat body 20 and can also be equipped with a positioning seat 32 (the positioning seat 32 mentioned above) that is compatible with the first pin hole 22 structure, so that during the assembly process of the two, it can first be inserted into the first pin hole 22 through the socket to form a preliminary positioning of the two, and then fixedly connected by the above or other assembly methods.

[0078] In one embodiment, please continue to refer to the attached Figure 2-Figure 3 Based on the above-mentioned embodiment in which the adjusting seat safety protection mechanism also includes a pin seat 30, the adjusting seat safety protection mechanism also includes an elastic reset component 40, and the elastic reset component 40 is configured to continuously apply a force in the plugging direction to the pin body 10, so that in the application of fitness equipment, under the action of the elastic reset component 40, the first end of the pin body 10 can be stably maintained in a state of being inserted into the positioning hole 61.

[0079] First, an elastic reset component 40 is disposed between the pin body 10 and the pin seat 30. The elastic reset component 40 acts on the pin seat 30 and the pin body 10 respectively. Since the pin seat 30 is fixedly mounted on the seat body 20, and the seat body 20 is in a relatively fixed matching relationship with the frame 60 of the fitness equipment in the axial direction of the pin body 10, under the action of the elastic reset component 40, the pin body 10 has a tendency to move in the direction of extending out of the first pin hole 22 and the second pin hole 31 (in the direction of inserting into the inner side of the seat body 20);

[0080] Second, an elastic reset component 40 is provided between the pin body 10 and the seat body 20, and the elastic reset component 40 acts on the seat body 20 and the pin body 10 respectively. Since the seat body 20 is in a relatively fixed matching relationship with the frame 60 of the fitness equipment in the axial direction of the pin body 10, under the action of the elastic reset component 40, the pin body 10 will have a tendency to move in the direction of extending out of the first pin hole 22 and the second pin hole 31 (the direction of inserting into the inner side of the seat body 20).

[0081] Specifically, the elastic reset component 40 is mainly used to continuously apply an elastic force to the pin body 10 to move from the outside of the seat body 20 to the inside of the seat body 20. Here, the elastic force provided by the elastic reset component 40 can be a thrust or a thrust. In addition, since the pin seat 30 and the seat body 20 are fixedly connected, the seat body 20 and the pin seat 30 can be regarded as a whole in this embodiment. Therefore, whether to set the elastic reset component 40 between the pin seat 30 and the pin body 10 or between the seat body 20 and the pin body 10 mainly depends on the structure of the equipment used by the safety protection mechanism of the adjustment seat and related design requirements, and the specific role played by the elastic reset component 40 is the same.

[0082] It should be understood that the elastic reset component 40 can be a component that uses the elastic properties of the material to achieve the above functions, and can be made of but not limited to springs, tension springs, rubber, silicone, polyurethane, etc.

[0083] Exemplarily, affected by the positional relationship between the seat body 20, the pin seat 30 and the pin body 10 (the pin seat 30 is arranged near the second end / outside of the pin body 10, and the seat body 20 is arranged near the first end / inside of the pin body 10). In the case where the elastic reset component 40 is arranged between the pin seat 30 and the pin body 10, the elastic reset component 40 can be in the form of applying a thrust to the pin body 10, with one end located on the outside of the pin body 10 and the other end acting on the pin body 10, and continuously applying a thrust to the pin body 10 in the direction of extending to the inside of the seat body 20. In the case where the elastic reset component 40 is arranged between the seat body 20 and the pin body 10, the elastic reset component 40 can be in the form of applying a pulling force to the pin body 10, with one end located on the inside of the pin body 10 and the other end acting on the pin body 10, and continuously applying a pulling force to the pin body 10 in the direction of extending to the inside of the seat body 20.

[0084] As an optional implementation of the above embodiment, Figure 2-Figure 3 As shown, the pin body 10 is provided with a stop portion 15 between the recessed portion 11 and the pin seat 30. The stop portion 15 may be provided on one side of the pin body 10 or may be provided around the outer periphery of the pin body 10. The stop portion 15 is specifically used to provide a corresponding force application position for the elastic reset component 40 so that the elastic reset component 40 can act on the pin body 10 through the stop portion 15.

[0085] In one embodiment, in an implementation where the pin body 10 is provided with a first limiting portion 14, the stopping portion 15 is located between the recessed portion 11 and the first limiting portion 14. In this way, the pin body 10 can form a circumferential limiting fit with the second limiting portion 311 of the second pin hole 31 located in the pin seat 30 through the first limiting portion 14, and a corresponding assembly space can also be provided between the stopping portion 15 and the pin seat 30 or the seat body 20 for the elastic reset component 40, so that the elastic reset component 40 is constrained between the stopping portion 15 and the pin seat 30 or the stopping portion 15 and the seat body 20, thereby improving the compactness of the structure.

[0086] Following the above-mentioned embodiment in which the pin body 10 is provided with the stopper 15, the elastic reset component 40 of this embodiment is a compression spring, which can be movably sleeved on the pin body 10, and its opposite ends act on the stopper 15 and the pin seat 30 respectively. Combined with the above-mentioned embodiment of the first limiting portion 14 and the second limiting portion 311, the second pin hole 31 can be set as a whole to be larger than the pin body 10, and the second limiting portion 311 corresponding to the first limit of the pin body 10 is set at the end away from the first pin hole 22. In this way, the compression spring can be accommodated between the second pin hole 31 and the pin body 10, and the compression spring can also be resisted by the end of the second pin hole 31 with the second limiting portion 311 and relatively small size. At the same time, the pin body 10 and the pin seat 30 also meet the requirements of constraining the pin body 10 in the circumferential rotation direction, thereby greatly improving the structural compactness of the safety protection mechanism of the adjustment seat.

[0087] Please continue to refer to the attached Figure 3 The specific reason for adopting the above embodiment is that, since the seat body 20 is arranged close to the inner side of the pin body 10, when the adjusting seat safety protection mechanism is applied to the fitness equipment, the seat body 20, in addition to cooperating with the frame 60 of the fitness equipment, can provide a relatively small installation space and position. If the elastic reset component 40 is arranged between the seat body 20 and the pin body 10, the structural complexity of the seat body 20 will be greatly increased, and the difficulty of installing the elastic reset component 40 will also increase. At the same time, it will also be accompanied by the emergence of difficult overhaul and maintenance in the later stage, which is not conducive to the widespread application of the adjusting seat safety protection mechanism.

[0088] This embodiment uses an elastic reset component 40 to act on the pin body 10, so that the pin body 10 has a tendency to move toward the inner side of the seat body 20, so that the adjustment seat safety protection mechanism can maintain the state of being inserted into the positioning hole 61 provided by the fitness equipment when the positioning pin is not acted upon by other external forces, further improving the stability and safety between the seat body 20 and the frame 60 of the fitness equipment. Moreover, after the positioning pin is pulled out of the positioning hole 61 and the user releases the positioning pin, the pin body 10 can be quickly reset under the action of the elastic reset component 40, so that the positioning pin can be quickly reinserted into the corresponding positioning hole 61, avoiding the situation that the user forgets to reinsert the positioning pin into the positioning hole 61, ensuring the safety during the adjustment process, and further effectively avoiding the situation that the user makes an incorrect operation during both the adjustment process and the use process.

[0089] Please continue to refer to the attached Figure 1-Figure 3As can be seen from the above content, the operating portion 13 can be a handle arranged at the second end of the pin body 10, and in the above-mentioned elastic reset component 40 is arranged between the pin seat 30 and the pin body 10 so that the positioning pin forms an implementation of a pull-pin structure. In order to avoid the pin body 10 from being separated from the pin seat 30 under the continuous action of the elastic reset component 40, the size of the handle of this implementation is set to be larger than the size of the second pin hole 31, so that when the pin body 10 is not subjected to other external forces and is located on the inner side of the extended seat body 20, the handle can be located at the end of the second pin hole 31 away from the first pin hole 22 and abut against the pin seat 30, thereby limiting the extreme position of the movement of the pin body 10 in the plug-in direction.

[0090] It is worth mentioning that in the embodiment in which the pin body 10 is provided with a stop portion 15, the projection of the stop portion 15 in the axial direction of the pin body 10 at least partially overlaps with the axial projection of the second pin hole 31, so that the stop portion 15 can be in abutment with the side of the pin seat 30 close to the seat body 20, thereby constraining the extreme position of the pin body 10 in the withdrawal direction.

[0091] According to the above-mentioned safety protection mechanism of the adjustment seat, please refer to the attached Figure 4-Figure 6 The embodiment also provides a fitness equipment, which includes a frame 60 and the above-mentioned adjustment seat safety protection mechanism. It is mentioned in the above content that the frame 60 serves as the supporting base of the fitness equipment, which is used to provide a stable and safe structure for fitness users to support different training equipment and provide a stable and safe training platform for fitness users. The frame 60 generally includes a plurality of columns, beams and other related supporting structures and connecting structures, and the adjustment seat safety protection mechanism is arranged at different positions and structural components of the frame 60 according to different adjustment requirements. That is to say, the adjustment seat safety protection mechanism can be arranged on the columns or beams as described above, or on other positions and structural components of the frame 60. This embodiment does not make strict limitations on this.

[0092] In order to provide a locking position for the adjustment seat safety protection mechanism, such as Figure 4-Figure 6As shown, the frame 60 of this embodiment is used to provide the adjustment and installation of the safety protection mechanism of the adjustable seat, and the part is a through structure (such as a tubular structure), and the frame 60 is provided with a positioning hole 61 that runs through the inside and the outside thereof. Moreover, in some embodiments, in order to allow the seat body 20 to have enough adjustable positions, a plurality of positioning holes 61 are arranged on the frame body at intervals along the movement direction of the seat body 20. Of course, in some other embodiments, the position of the frame 60 for providing the installation of the safety protection mechanism of the adjustable seat may not be a through structure, as long as it is ensured that the corresponding part of the frame 60 can be installed on the safety protection mechanism of the adjustable seat, and can be located on the frame 60 and can make an adjustment movement relative to the frame 60, and the positioning holes 61 also run through the inner and outer sides of the frame 60, so that the safety protection mechanism of the adjustable seat can be locked at the corresponding position of the frame 60 through the positioning holes 61 after adjustment.

[0093] In the safety protection mechanism of the adjustment seat, the seat body 20 is movably arranged on the frame 60 through the guide structure 21. For example, under the premise that the frame 60 is a through-hole tubular structure, the seat body 20 can also adopt the through-hole structure mentioned in the above structural description, and be sleeved on the frame 60 through the inner cavity of the guide structure 21, so as to achieve the sliding cooperation between the seat body 20 and the frame 60. Of course, it is also mentioned in the above content that the cooperation relationship between the seat body 20 and the frame 60 is not limited to this.

[0094] In the above state, the first adjustment hole located on the seat body 20 is opened on a side close to the frame 60, so that when the seat body 20 moves relative to the frame 60 on the frame 60, the first pin hole 22 can move with the seat body 20 to a position corresponding to the positioning hole 61 and communicate with the first end of the pin body 10 can be inserted from the outside of the frame 60 through the positioning hole 61 into the inside of the frame 60, and pulled out from the inside of the frame 60 through the positioning hole 61 to the outside of the frame 60.

[0095] From the above content, it can be seen that when the pin body 10 is in the locked state, at least a portion of the recessed portion 11 abuts against the inner surface of the positioning hole 61 of the frame 60, and the rigid protrusion 12 passes through the positioning hole 61 and is projected along the axial direction of the pin body 10. At least a portion of the rigid protrusion 12 is located on the outer peripheral side of the positioning hole 61.

[0096] When the pin body 10 is inserted into the positioning hole 61 and is subjected to a force acting in the radial force-bearing direction, part of the edge of the positioning hole 61 can be placed in the recessed portion 11, and the pin body 10 is pressed against the edge of the first pin hole 22 through the recessed portion 11, and the freedom of movement of the pin body 10 in the axial direction is constrained and limited by the groove wall of the recessed portion 11 (which can also be understood as the side wall of the rigid protrusion), ensuring that the pin body 10 cannot axially disengage from the positioning hole 61 when subjected to a force from a direction close to the recessed portion 11.

[0097] In one embodiment, the inner surface structure of the positioning hole 61 used to abut against the groove bottom of the recessed portion 11 matches the groove bottom structure of the recessed portion 11, and the limiting surface matches the hole edge structure of the positioning hole 61. The structural matching here mainly refers to the shape of the portion of the recessed portion 11 used to abut against the positioning hole 61 (which can also be understood as the portion of the rigid protrusion used to abut against the positioning hole 61) matching the shape of the hole edge of the positioning hole 61. Of course, in some embodiments, on the basis of geometric shape matching, the recessed portion 11 and the positioning hole 61 can also be matched in strength and rigidity to ensure that when the recessed portion 11 abuts against the hole edge of the positioning hole 61, the recessed portion 11 (pin body 10) and the positioning hole 61 (frame 60) can jointly withstand and maintain structural stability when subjected to force.

[0098] The shape matching between the recessed portion 11 and the edge of the positioning hole 61 may be any one of the following forms or a combination of multiple forms:

[0099] 1. The groove bottom structure of the recessed portion 11 matches the hole wall structure of the positioning hole 61, so that when the pin body 10 passes through the recessed portion 11 and abuts against the hole edge of the positioning hole 61 in the radial direction, the contact surface between the recessed portion 11 and the hole wall of the positioning hole 61 can be increased, so as to achieve the purpose of improving the stability of the pin body 10 in the seat body 20;

[0100] 2. The limiting surface structure of the recessed portion 11 matches the side wall structure at the corresponding hole edge of the positioning hole 61, so that the hole edge of the positioning hole 61 is located in the recessed portion 11, and when the pin body 10 is subjected to an axial force in the direction of disengaging from the positioning hole 61 (outer direction), the pin body 10 can achieve axial limitation by means of the limiting surface of the recessed portion 11 (the side wall of the rigid protrusion) being pressed against the side wall of the positioning hole 61, and through the above-mentioned matching structure, the contact surface between the two can be made larger, thereby improving the axial restraint ability of the frame 60 on the pin body 10.

[0101] In one embodiment, a pulley assembly 50 is provided on the seat body 20, and the pulley assembly 50 is rotatably connected or fixedly connected to the seat body 20, and a pulley 51 is provided on the pulley assembly 50, and the pulley 51 is used to support the pull rope of the fitness equipment. One end of the pull rope can be connected to the resistance source of the fitness equipment, and the other end can be connected to the force-applying part. The two ends of the pull rope are supported on the pulley 51 located on the pulley assembly 50, so that the position of the force-applying part can be adjusted by adjusting the position of the seat body 20 on the frame 60 to meet the training needs of different users.

[0102] It can be understood that the radial force-bearing side of the pin body 10 is generally located on the side of the pulley 51 that is away from the pulley 51 for supporting the pull rope. In this way, when the pulley 51 supports the pull rope, when the pull rope applies its force to the pin body 10 in turn through the pulley 51, the pulley assembly 50 and the seat body 20, the pin body 10 can achieve the limit locking of the frame 60 and the seat body 20 by pressing its radial force-bearing side against the frame 60.

[0103] Please refer to the attached Figure 2-Figure 4 A through hole 52 is also provided on the lower side of the pulley assembly 50, and the fitness equipment is also provided with a pull rope, which is wound around the upper side of the pulley 51 after passing through the through hole 52, and one end of the pull rope (the end passing through the through hole 52) is connected to the resistance source of the fitness equipment, and the other end of the pull rope (the end passing through the pulley assembly 50 from one side of the pulley 51) is connected to the training accessory.

[0104] When the fitness equipment is in a training state, the resistance source applies a force inclined in the direction of the frame 60 to the pulley 51 through the pull rope, and a part of the component of the force acts on the pulley assembly 50 and the seat body 20 connected to the pulley assembly 50 from top to bottom, so that the seat body 20 and the frame 60 have a tendency to move relative to each other in the up and down directions, that is, an interaction force in the up and down directions is generated between the two, which will cause the pin body 10 to be driven by the seat body 20 under the above-mentioned force, thereby generating a radial interaction force with the inner surface of the positioning hole 61, so that the pin body 10 has a tendency to move in the radial force-bearing side direction, and finally, ensure that the hole edge of the positioning hole 61 can be stuck in the recessed portion 11 to maintain the relative stability of the seat body 20 and the frame 60.

[0105] In summary, the fitness equipment adopts an adjustable seat safety protection mechanism to maintain a stable and safe locking state between the seat body 20 and the frame 60, thereby preventing the user from suddenly and quickly moving the seat body 20 on the frame 60 due to misoperation of the positioning pin, thereby providing effective protection for the trainee, and the structural improvement of the positioning pin is relatively simple, which effectively controls the cost of the positioning pin, which is conducive to the large-scale promotion and use of fitness equipment.

[0106] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0107] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0108] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0109] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A positioning pin, characterized in that: include: The pin body (10) is provided with a recessed portion (11) radially near its first end, the first end of the pin body (10) is formed with a rigid protrusion (12) radially protruding from the recessed portion (11), and the second end of the pin body (10) is provided with an operating portion (13) for controlling the insertion and extraction of the positioning pin.

2. An adjustment seat safety protection mechanism, characterized in that: include: A base (20), the base having a guide structure (21) for being movably connected to a frame (60), and a first pin hole (22) penetrating through the guide structure (21) is formed on the base (20); and The positioning pin according to claim 1, wherein the pin body (10) is used to be inserted into the positioning hole (61) of the frame (60), the pin body (10) is movably arranged on the seat (20), and the pin body (10) has a locked state in which the first end is inserted into the first pin hole (22), and an unlocked state in which the first end is withdrawn from the first pin hole (22); When the pin body (10) is in a locked state, at least a portion of the recessed portion (11) is used to abut against the inner surface of the positioning hole (61) of the frame (60), and the rigid protrusion (12) passes through the positioning hole (61) and is projected along the axial direction of the pin body (10). At least a portion of the rigid protrusion (12) is located on the outer peripheral side of the positioning hole (61).

3. The safety protection mechanism for the adjustment seat according to claim 2, characterized in that: The recessed portion (11) is arranged on the radial force-bearing side of the pin body (10), and in the circumferential direction of the pin body (10), the opposite ends of the recessed portion (11) are arranged at intervals.

4. The safety protection mechanism for the adjustment seat according to claim 2 or 3, characterized in that: The recessed portion (11) is a groove formed in the pin body (10) near its first end, and the groove wall of the recessed portion (11) on the side close to the rigid protrusion (12) constitutes a limiting surface; When the pin body (10) is in a locked state, at least part of the groove bottom of the recessed portion (11) is used to abut against the inner surface of the positioning hole (61) of the frame (60), and the limiting surface is used to abut against the edge of the positioning hole (61) for limiting position.

5. The safety protection mechanism for the adjustment seat according to claim 2 or 3, characterized in that: Also includes: A pin seat (30) is installed on the outer side of the seat body (20), and the pin seat (30) is provided with a second pin hole (31) penetrating through two opposite sides thereof, and the second pin hole (31) is connected to the first pin hole (22); The pin body (10) is movably inserted into the second pin hole (31), and the operating portion (13) extends out of an end of the second pin hole (31) away from the first pin hole (22).

6. The safety protection mechanism for the adjustment seat according to claim 5, characterized in that: The pin body (10) is provided with a first limiting portion (14) between the recessed portion (11) and the operating portion (13); the cross-sectional shape of the pin body (10) at the position where the first limiting portion (14) is provided is non-circular; A second limiting portion (311) having a shape adapted to the structure of the first limiting portion (14) is arranged in the second pin hole (31); the first limiting portion (14) can move relative to the second limiting portion (311) along the axial direction of the pin body (10); and the first limiting portion (14) and the second limiting portion (311) cooperate in limiting the direction in which the pin body (10) rotates around its own central axis.

7. The safety protection mechanism for the adjustment seat according to claim 5, characterized in that: An elastic reset component (40) is provided between the pin body (10) and the pin seat (30), or an elastic reset component (40) is provided between the pin body (10) and the seat (20); The elastic reset component (40) is used to act on the pin body (10) so that the pin body (10) has a tendency to move toward a locked state.

8. A fitness equipment, characterized in that: include: The frame (60) is of a through structure, and the frame (60) is provided with a positioning hole (61) that passes through the inside and the outside thereof; as well as According to any one of claims 2 to 7, the seat body (20) is movably arranged on the frame (60) through the guide structure (21), and the first end of the pin body (10) can be inserted from the outside of the frame (60) into the inside of the frame (60) through the positioning hole (61), and can be pulled out from the inside of the frame (60) through the positioning hole (61) to the outside of the frame (60); When the pin body (10) is in a locked state, at least a portion of the recessed portion (11) abuts against an inner surface of a positioning hole (61) of a frame (60), and the rigid protrusion (12) passes through the positioning hole (61) and is projected along the axial direction of the pin body (10). At least a portion of the rigid protrusion (12) is located on the outer peripheral side of the positioning hole (61).

9. The fitness equipment according to claim 8, characterized in that: The recessed portion (11) is a groove formed in the pin body (10) near its first end, and the groove wall of the recessed portion (11) on the side close to the rigid protrusion (12) constitutes a limiting surface; When the pin body (10) is in a locked state, at least part of the groove bottom of the recessed portion (11) abuts against the inner surface of the positioning hole (61) of the frame (60), and the limiting surface is used to abut against the edge of the positioning hole (61) for limiting position; The inner surface structure of the positioning hole (61) that abuts against the groove bottom of the recessed portion (11) matches the groove bottom structure of the recessed portion (11), and the limiting surface matches the hole edge structure of the positioning hole (61).

10. The fitness equipment according to claim 8, characterized in that: The seat body (20) is provided with a pulley assembly (50), and the pulley assembly (50) comprises a pulley (51); The fitness equipment is also provided with a pull rope, which is wound around the pulley (51), and one end of the pull rope is connected to the resistance source of the fitness equipment, and the other end of the pull rope is connected to the training accessory. In the training state, the resistance source can apply a radial force to the pin body (10) through the pull rope, so that the hole edge of the positioning hole (61) can be stuck in the recessed portion (11).

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