Exercise machine

Abstract

The present invention relates to an exercise machine. The present invention may include a main frame (10) equipped with a driving unit that generates an exercise load inside. The main frame (10) may be provided to accommodate or withdraw side frames (30A, 30B). Additionally, an electromagnet locking device (50) may be disposed on the side frames (30A, 30B). When current is applied to the electromagnet locking device (50), the electromagnet locking device (50) may be configured to be coupled to the main frame (10) by magnetic force. Therefore, the user does not need to perform the task of attaching a locking device, such as a latch, to secure the side frames (30A, 30B).

Description

Technology Field

[0001] The present invention relates to an exercise machine, and more specifically, to an exercise machine in which a part of it can rotate and its shape can be varied. Background Technology

[0002] Generally, equipment used for strength training is designed to repeat the relaxation and contraction of muscles by pushing or pulling a lever connected to a weight of a set unit. Among such strength training equipment, there are various types of exercise machines, such as arm curl machines for bicep exercises, chest press or butterfly machines for chest exercises including the pectoralis major, and pull-up machines for back muscle exercises.

[0003] In particular, home training equipment that allows users to exercise at home without visiting a fitness center has recently become widely used. However, the strength training equipment exemplified earlier is bulky and requires a large amount of installation space, which poses a problem in that it is difficult to utilize as home training equipment.

[0004] To address this, technologies are being developed to reduce the volume of exercise equipment when not in use by folding or rotating parts of the equipment. For example, U.S. published patents US2020 / 0047027 (Priority 1) and US2019 / 0262652 (Priority 2) disclose a structure in which parts of the exercise equipment can be rotated to be folded when not in use.

[0005] The aforementioned prior art may consist of a main body of an exercise device and an arm structure connected to the main body. Here, the arm structure may correspond to a component that a user grips or hangs the exercise device on, and can provide various exercise angles by changing the angle or height of the component.

[0006] However, after moving or rotating the arm structure of the exercise equipment from the main body, additional work is required to fix it in place so that it does not move. For example, the user needs to use a locking device to secure the arm structure of the exercise equipment to a part of the main body or the ground. Therefore, there is the inconvenience of having to perform many preliminary tasks to use the exercise equipment.

[0007] Furthermore, parts such as arm structures that move or rotate relative to the main body are subjected to repetitive loads during the user's exercise. These loaded parts may shake due to play, generating noise and posing a problem that can cause anxiety for the user. Prior art literature

[0009] US Published Patent US2020 / 0047027 (Prior Art 1) US Published Patent US2019 / 0262652 (Prior Art 2) The problem to be solved

[0010] The present invention is intended to solve the problems of the prior art as described above, and the objective of the present invention is to ensure that a side frame withdrawn from a main frame (body) is fixed to the main frame by an electromagnetic locking device.

[0011] Another objective of the present invention is to ensure that the electromagnet locking device is in close contact with the main frame, thereby eliminating the gap between the main frame and the side frame. means of solving the problem

[0013] According to the features of the present invention for achieving the above-described purpose, the present invention may include a main frame equipped with a driving unit that generates an internal motion load. The main frame may be configured to accommodate or allow a side frame to be pulled out. Additionally, an electromagnetic locking device may be disposed on the side frame. When current is applied to the electromagnetic locking device, the electromagnetic locking device may be configured to be coupled to the main frame by magnetic force. Accordingly, the user does not need to perform the task of individually engaging a locking device, such as a latch, to secure the side frame.

[0014] In addition, the electromagnet locking device can be positioned on the side frame at a height corresponding to half of the total height (H1) of the side frame. By using this optimal installation height of the electromagnet locking device, the durability against external forces applied to the side frame can be increased.

[0015] Additionally, the electromagnet locking device may be positioned on the inside of the side frame facing one end of the main frame when the side frame is withdrawn from the main frame. Accordingly, the electromagnet locking device may be installed so as not to be exposed as much as possible.

[0016] In addition, an armature plate may be positioned on the main frame facing the electromagnet lock. When current is applied to the electromagnet lock, the electromagnet lock can be strongly coupled to the armature plate.

[0017] In addition, the armature plates are provided in multiple numbers along the height direction of the main frame, and each of the multiple armature plates may be coupled to the electromagnet locking device.

[0018] Additionally, the electromagnet locking device may include a device housing having a mounting space formed therein. An electromagnet member may be disposed in the mounting space. At least a portion of the surface of the electromagnet member may be exposed to the outside of the mounting space. In this case, the surface of the electromagnet member may be provided with a coupling protrusion that protrudes further toward the armature plate to increase the coupling force.

[0019] In addition, guide posts are connected to the upper and lower parts of the device housing, respectively, and the guide posts can be fixed to the upper and lower parts of the side frame, respectively. Accordingly, the electromagnet locking device can be installed on the side frame through the guide posts.

[0020] In addition, the guide post can be connected to the upper and lower surfaces of the device housing, respectively, and the surface of the guide post can be formed with an uneven structure. This can increase the durability of the guide post.

[0021] Additionally, the electromagnet locking device may be installed on the side frame so as to be movable toward the main frame, and a locking groove may be formed in the main frame into which a part of the electromagnet locking device is inserted. In this way, the entire electromagnet locking device can move and more strongly secure the side frame.

[0022] At least one of the main frame or the side frame may be equipped with a sensing device capable of detecting that the side frame has been withdrawn from the main frame. At this time, when the sensing device detects that the side frame has been withdrawn, the control unit may apply power to the electromagnet locking device to automatically create a locked state.

[0023] In addition, the above-mentioned side frame is equipped with a height adjustment rod along with a guide post to form a square frame shape and to compensate for the structural weakness of the above-mentioned side frame. Effects of the invention

[0025] The exercise equipment according to the present invention, as examined above, has the following effects.

[0026] In the present invention, the shape of the exercise equipment can be varied as the side frame constituting the exercise equipment moves relative to the main frame. At this time, an electromagnetic locking device to which power is applied can fix the side frame to the main frame. Therefore, the user does not need to perform the task of attaching a locking device, such as a latch, to fix the side frame, and thereby the convenience of using the exercise equipment is improved.

[0027] Furthermore, according to the present invention, the electromagnetic locking device installed on the side frame is in close contact with the main frame, thereby preventing the occurrence of play between the side frame and the main frame. Consequently, vibration and noise caused by the play between the side frame and the main frame are prevented, and the user can use the exercise equipment more stably.

[0028] In addition, in the present invention, the electromagnetic locking device can be positioned at the center based on the height direction of the side frame. During the movement process, a large external force is periodically applied to the side frame, and the optimal installation height of the electromagnetic locking device has the effect of increasing durability against the external force applied to the side frame.

[0029] In particular, in the present invention, the electromagnetic locking device is positioned on a guide post, and the guide post can form one side of the side frame connecting the top and bottom of the side frame. At this time, the side frame is equipped with a height adjustment rod along with the guide post to form a square frame shape, which has the effect of compensating for the structural weakness of the side frame.

[0030] In addition, the sensing device equipped in the exercise equipment of the present invention can detect whether the side frame has been fully withdrawn and apply power to the electromagnetic locking device. Accordingly, the electromagnetic locking device can automatically fix the side frame to the main frame without the user performing any separate operation, and the convenience of using the exercise equipment can be further enhanced.

[0031] In addition, in the present invention, since the electromagnetic locking device is positioned on the inside of the side frame facing the surface of the main frame, the electromagnetic locking device is not exposed to the outside or the degree of exposure can be minimized. Therefore, there is an effect of improving the aesthetic appeal of the exercise equipment. Brief explanation of the drawing

[0033] FIG. 1 is a perspective view showing an embodiment of an exercise apparatus according to the present invention. FIG. 2 is a perspective view showing the side frame constituting the embodiment of FIG. 1 in a state where it is pulled forward. FIG. 3 is a side view showing a state in which a side frame is withdrawn from a main frame constituting an embodiment of the present invention. FIG. 4 is an enlarged perspective view of section A of FIG. 3. FIG. 5 is a cross-sectional view along the line I-I' of FIG. 1. FIG. 6 is a perspective view showing the configuration of an electromagnetic locking device constituting an embodiment of the present invention and a guide post coupled to the electromagnetic locking device. FIG. 7 is a perspective view showing the structure of an electromagnetic locking device constituting an embodiment of the present invention. FIG. 8 is a perspective view showing the configuration of the device housing of an electromagnetic locking device constituting an embodiment of the present invention. FIG. 9 is a cross-sectional view showing the state in which the side frame is fixed to the main frame by an electromagnetic locking device constituting an embodiment of the present invention. FIG. 10 is a cross-sectional view showing a state in which a side frame is fixed to a main frame by an electromagnetic locking device constituting another embodiment of an exercise apparatus according to the present invention. FIG. 11 is a mode shape showing a structural weak point of a side frame constituting an embodiment of the present invention. FIG. 12 is a graph showing the results of testing the fixing force of a side frame according to the area ratio of an electromagnet member constituting an embodiment of the present invention and an armature plate in contact therewith. FIG. 13 is a flowchart showing the process of fixing a side frame and a handle device constituting an embodiment of an exercise device according to the present invention in sequence. Specific details for implementing the invention

[0034] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0035] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended only to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that another component may also be "connected," "combined," or "connected" between each component.

[0036] The present invention relates to exercise equipment, and more specifically, to an exercise equipment having a form in which a plurality of parts can be variable. Here, "variable" may mean that the overall shape of the exercise equipment changes as some parts rotate or slide. Through this variable structure, the user can fold the exercise equipment for storage and use the equipment at various angles, lengths, or heights.

[0037] The exercise equipment of the present invention includes an electromagnet locking device (50), which can serve to fix the main frame (10) and the side frames (30A, 30B) constituting the exercise equipment. When a user pulls out the side frames (30A, 30B) from the main frame (10), the electromagnet locking device (50) fixes the side frames (30A, 30B) to the main frame (10), thereby preventing the side frames (30A, 30B) from moving in the direction of being retracted or from rotating. Below, the structure of the present invention will be explained with a focus on the structure of such an electromagnet locking device (50).

[0038] An embodiment of an exercise apparatus according to the present invention is illustrated in FIG. 1 and FIG. 2. FIG. 1 shows a state in which a side frame (30A, 30B) constituting the exercise apparatus is housed in a main frame (10), and FIG. 2 shows a state in which the side frame (30A, 30B) is withdrawn from the main frame (10).

[0039] The main frame (10) is fixed at the installation location, and the side frames (30A, 30B) can be withdrawn by moving linearly from the main frame (10). Additionally, the side frames (30A, 30B) may rotate while withdrawn from the main frame (10). Therefore, when a user uses the exercise equipment, (i) the side frames (30A, 30B) must be fixed so that they do not move linearly in the direction of being stored in the main frame (10), and (ii) the side frames (30A, 30B) must be fixed so that they do not rotate relative to the main frame (10). The fixing of the side frames (30A, 30B) can be achieved by an electromagnetic locking device (50) to be described below.

[0040] For reference, 'locked' below means that the side frames (30A, 30B) are fixed so that they cannot rotate or move, and 'unlocked' means that the side frames (30A, 30B) are in a state where they can rotate or move.

[0041] The main frame (10) can be fixed to a wall (W). In FIGS. 1 and FIGS. 2, the main frame (10) can be seen installed at the corner of the wall (W). An upper plate (11) and a lower plate (13) can be placed at the upper and lower portions of the main frame (10), respectively. The upper plate (11) and the lower plate (13) have a plate-like structure, and a front plate (12) can be provided between them.

[0042] Here, the front plate (12) is a part that the user faces, and it may be composed of a mirror or have a display (17) installed on the front plate (12). In this embodiment, a display (17) is provided on the upper part of the front plate (12) to provide various screens to the user.

[0043] In this embodiment, the main frame (10) may have a shape having an internal installation space. For example, as shown in FIGS. 1 and 2, the main frame (10) may be in the shape of a triangular prism having a cross-section in the form of a right isosceles triangle. The main frame (10) may be positioned so that the part forming the right angle in the right isosceles triangle is located at the rear. When placing exercise equipment in an indoor space, if the rear of the main frame (10) is positioned at the corner of the installation location, the utilization of space can be increased.

[0044] Various components can be embedded in the installation space of the main frame (10). Therefore, the main frame (10) can be viewed as the main body of the exercise equipment. Heavy components are embedded in the installation space, and the main frame (10) may serve as a center of gravity to prevent the exercise equipment from tipping over. For example, the interior of the main frame (10) may include a drive unit (not shown) that generates an exercise load. The drive unit may include components such as a motor, a reduction gear, and a pulley for transmitting the exercise load of the drive unit. Since the motor, reduction gear, and pulley are mainly formed of metal and are relatively heavy components, they can be placed inside the main frame (10) to serve as a center of gravity.

[0045] As shown in FIG. 2, a fixed foot (14) may be provided at the bottom of the main frame (10). The fixed foot (14) may protrude downward from the lower plate (13), that is, toward the installation surface. Thus, the fixed foot (14) can support the exercise equipment. The fixed foot (14) may be composed of a leveler to adjust the height at which the fixed foot (14) protrudes toward the installation surface.

[0046] Referring to FIGS. 3 to 5, the main frame (10) may be provided with a main plate (15). The main plate (15) may be a plate-like structure forming the side of the main frame (10). Since the main plate (15) faces the wall surface when the main frame (10) is installed on the wall (W), it may not be exposed to the user for most of the time.

[0047] The main plate (15) may have a roughly rectangular plate structure. A plurality of frames may be arranged alternately on the main plate (15) to form a rectangular plate shape. The main plate (15) may be configured as a pair symmetrically on each side of the main frame (10).

[0048] Referring to FIG. 4, the main plate (15) may be provided with an armature plate (16). The armature plate (16) may be placed on the surface of the main plate (15), and in this embodiment, the armature plate (16) may be placed on the surface of the main plate (15) facing the side frame (30A, 30B). The armature plate (16) is a part that is coupled with the electromagnet locking device (50) and can be viewed as a magnetic attachment member. The armature plate (16) may have a roughly plate-like structure and may be composed of a magnetic material or a ferromagnetic material such as iron, nickel, cobalt, etc.

[0049] The above armature plate (16) can be in close contact with the electromagnet lock (50) when power is applied to the electromagnet lock (50). To this end, the armature plate (16) can be positioned facing the electromagnet lock (50). In this embodiment, the armature plate (16) can be positioned on the surface of the main plate (15). Referring to FIG. 5, the armature plate (16) is positioned between the main plate (15) and the side frames (30A, 30B) so that it is not exposed to the outside.

[0050] Additionally, as shown in FIG. 4, the armature plate (16) may be composed of multiple pieces. Each of the multiple armature plates (16) may be attached to the electromagnet locking device (50) by magnetic force. In this embodiment, two armature plates (16) may be provided symmetrically with different heights from each other, but alternatively, the armature plate (16) may be composed of one piece or three or more pieces. Alternatively, the armature plate (16) may be omitted. If the main frame (10) itself is composed of a ferromagnetic material, the electromagnet locking device (50) may be fixed directly to the surface of the main frame (10).

[0051] The main frame (10) may be provided with a guide rail (22). Referring to FIG. 5, the guide rail (22) may be positioned at the bottom of the main frame (10). The guide rail (22) may serve to guide the movement path of the side frames (30A, 30B). Although not illustrated, the lower body of the side frames (30A, 30B) may be provided with a movable part that surrounds the guide rail (22), and the movable part may engage with the guide rail (22) to guide the movement of the side frames (30A, 30B).

[0052] The guide rails (22) may be configured as a pair at the bottom of the main frame (10). The pair of guide rails (22) are intended to guide the first side frame (30A) and the second side frame (30B), respectively, and may extend in directions orthogonal to each other. Of course, if the side frames (30A, 30B) are configured as a single unit, only one guide rail (22) may be provided. Furthermore, the angle between the pair of guide rails (22) does not necessarily have to be orthogonal.

[0053] Side frames (30A, 30B) may be installed on the main frame (10). The side frames (30A, 30B) may be withdrawn from or stored in the main frame (10). When the side frames (30A, 30B) are stored in the main frame (10), the total volume of the exercise equipment is reduced, thereby reducing the volume occupied by the exercise equipment when it is not in use. Conversely, when the side frames (30A, 30B) are withdrawn from the main frame (10), the length of the protruding handle device (33) attached to the side frames (30A, 30B) increases, allowing the user to utilize a wider variety of exercise functions.

[0054] In this embodiment, the side frames (30A, 30B) may be configured as a pair. That is, the side frames (30A, 30B) may be configured as a first side frame (30A) and a second side frame (30B). For distinction, based on the drawing, the side frame on the left (30A, 30B) will be referred to as the first side frame (30A) and the side frame on the right (30A, 30B) will be referred to as the second side frame (30B).

[0055] The first side frame (30A) and the second side frame (30B) may be arranged to be stored in or withdrawn from the main frame (10). The first side frame (30A) and the second side frame (30B) may be arranged symmetrically on both sides centered on the main frame (10). Since the first side frame (30A) and the second side frame (30B) correspond to substantially the same configuration, the following description will be based on the first side frame (30A).

[0056] The first side frame (30A) can slide along the left side of the main frame (10) and be stored or protruded. For example, as shown in FIG. 1, the first side frame (30A) may be stored in the installation space of the main frame (10). Conversely, as shown in FIG. 2, the first side frame (30A) may be protruded diagonally from the left side of the front of the main frame (10). The first side frame (30A) may slide along the guide rail (22) installed inside the main frame (10).

[0057] In this embodiment, the first side frame (30A) and the second side frame (30B) can be rotated with the vertical direction of the main frame (10) as the axis of rotation after protruding from the main frame (10). For example, as shown in FIG. 2, the first side frame (30A) and the second side frame (30B) protruding from the main frame (10) can be rotated to be closer to each other. By rotating the first side frame (30A) to be closer to the second side frame (30B), the user can adjust the handle device (33) of the first side frame (30A) and the handle device (33) of the second side frame (30B) to be closer to each other according to their body structure. For reference, the axis of rotation of the first side frame (30A) and the second side frame (30B) is positioned on the inside and is not shown in the drawing.

[0058] Looking at the structure of the first side frame (30A), an upper body (31a) may be positioned on the upper part of the first side frame (30A), and a lower body (31b) may be positioned on the lower part. The upper body (31a) and the lower body (31b) may protrude side by side at different heights. In this case, the upper body (31a) may be part of a pull-up bar that allows a user to perform exercises such as pull-ups.

[0059] The upper body (31a) and the lower body (31b) are connected so that the first side frame (30A) can be approximately rectangular. Here, the front end of the upper body (31a) and the lower body (31b) can be connected by a height adjustment rod (32) to be described below, and the rear end can be connected by a shaft (not shown) that serves as the rotation axis of the first side frame (30A) as well as a guide post (51) to be described below. Additionally, an installation plate (35, see FIG. 3) on which a mirror or the like is installed may be installed between the upper body (31a) and the lower body (31b).

[0060] More precisely, the first side frame (30A) can be formed in the shape of a square frame. The four sides forming the square frame shape of the first side frame (30A) can each be formed by (i) an upper body (31a) positioned on the upper part of the first side frame (30A), (ii) a lower body (31b) positioned on the lower part, (iii) a height adjustment rod (32) connecting the upper body and the lower body along the height direction of the first side frame (30A), and (iv) a guide post (51) extending parallel to the height adjustment rod.

[0061] At this time, when the first side frame (30A) is withdrawn from the main frame (10), the height adjustment rod (32) can be positioned at a location relatively far from the main frame (10) than the guide post (51). That is, the height adjustment rod becomes the most protruding part of the first side frame (30A), and the guide post (51) can be positioned relatively inward. A front portion of the height adjustment rod (32) may be opened to form an opening (32b, see FIG. 13), and the opening (32b) may be formed continuously along the height direction of the height adjustment rod (32). The opening (32b) may be omitted.

[0062] The first side frame (30A) is equipped with the electromagnet locking device (50) to prevent the first side frame (30A) from sliding back into the main frame (10). The electromagnet locking device (50) is composed of an electromagnet and, when power is applied, generates a magnetic force to come into close contact with the armature plate (16), thereby preventing the first side frame (30A) from sliding. The structure of the electromagnet locking device (50) will be explained again below.

[0063] A handle device (33) may be installed on each of the first side frame (30A) and the second side frame (30B). The handle device (33) may be a part that protrudes toward the user when the user exercises. The handle device (33) may include a connecting body (33a) for fixing the handle device (33) to the height adjustment rod (32) of the first side frame (30A), and a handle bar (33b) that is fixed to the height adjustment rod (32) by the connecting body (33a).

[0064] The above connecting body (33a) may be raised and lowered along the height adjustment rod (32) to adjust the height of the handle device (33), or the above connecting body (33a) may be rotated relative to the height adjustment rod (32) to adjust the angle of the handle device (33). Alternatively, the handle device (33) may be fixed to the height adjustment rod (32) and may be linked only to the rotation or movement of the first side frame (30A).

[0065] Meanwhile, a wire (not shown) is embedded inside the handle bar (33b), and a gripping part (not shown) may be connected to one end of the wire. When a user pulls the gripping part, the wire connected to the gripping part extends from the inside of the handle bar (33b) to the outside, and when the user removes the force pulling the gripping part, the gripping part and the wire can return to the end of the handle bar (33b).

[0066] The return of such a wire can be achieved by a load supply unit installed on the main frame (10). The load supply unit is composed of a motor and a reduction gear, and can supply a load to the wire in a direction that returns the wire to its original position, that is, into the inside of the handle bar (33b).

[0067] Additionally, the wire passes continuously through the main frame (10), the first side frame (30A), and the handle bar (33b), with one end connected to the gripping part and the other end wound around the load supply part. At this time, multiple pulleys (not shown) may be arranged inside the main frame (10), the first side frame (30A), and the handle bar (33b) to allow the wire to be stably unwound or wound. Alternatively, all or part of the wire may be installed so as to be exposed to the outside of the exercise equipment.

[0068] Referring to FIG. 2, the height adjustment rod (32) is erected vertically at the front of the first side frame (30A) and the second side frame (30B), and the handle device (33) described above can be installed on the height adjustment rod (32). That is, the connecting body (33a) of the handle device (33) is coupled to the height adjustment rod (32), and when the connecting body (33a) moves up and down along the height adjustment rod (32), the height of the handle device (33) can be varied.

[0069] When the height adjustment rod (32) rotates, the handle device (33) installed on the height adjustment rod (32) also rotates together to create various movement angles. However, after the handle device (33) is rotated to a movement angle desired by the user, it needs to be locked. This locking may be achieved by a fixing pin (not shown) or by a separate locking means.

[0070] Referring to FIGS. 4 and 5, the first side frame (30A) may be provided with a side plate (34). The side plate (34) may be positioned to cover the front of the first side frame (30A). The side plate (34) may be positioned between the upper body (31a) and the lower body (30b) and may cover the entire or part of the front of the first side frame (30A). That is, when a user looks at the exercise equipment, the side plate (34) may constitute part of the surface of the first side frame (30A). Accordingly, the electromagnet locking device (50) may be obscured by the side plate (34). However, in FIG. 2, the side plate (34) is omitted to aid in understanding the position and shape of the electromagnet locking device (50).

[0071] Referring to FIG. 2, a frame locking means may be installed at the lower part of the first side frame (30A). The frame locking means may lock the first side frame (30A) so that it does not rotate, or unlock it so that it can rotate. The frame locking means is installed at the lower part of the first side frame (30A), and as shown in FIG. 2, it may be provided at the lower part of the most protruding front end of the first side frame (30A).

[0072] Of course, the above-mentioned electromagnet locking device (50) may restrict the rotation and movement of the first side frame (30A), but the above-mentioned frame locking means may fill the spaced-apart space between the first side frame (30A) and the ground so that the first side frame (30A) can be more firmly fixed. In some cases, the above-mentioned frame locking means may be omitted.

[0073] The above-described frame locking means may have a structure in which a mounting leg (37), linked to the rotation of a rotating lever (38), moves linearly and comes into close contact with the installation surface (ground). When the mounting leg (37) comes into close contact with the installation surface, the gap between the first side frame (30A) and the installation surface is eliminated, and the first side frame (30A) can be strongly fixed to the installation surface. When the first side frame (30A) is fixed to the installation surface by the above-described frame locking means, the first side frame (30A) can be locked so that it cannot rotate.

[0074] An electromagnet lock (50) may be installed on the first side frame (30A). The electromagnet lock (50) may be an electronic magnet lock (EM Lock) that generates magnetic force when power is applied. Unlike permanent magnets, an electromagnet becomes magnetized when current flows through it and becomes unmagnetized when the current is cut off. Therefore, when current is allowed to flow through the electromagnet lock (50) while the first side frame (30A) is pulled out, an attractive force due to magnetic force is generated between the electromagnet member (56) of the electromagnet lock (50) and the armature plate (16), thereby locking the first side frame (30A).

[0075] Referring to FIGS. 6 to 8, the frame of the electromagnet locking device (50) can be formed by a device housing (53). The device housing (53) may have a cuboid shape with a hollow space formed approximately in the center. The hollow space may be a mounting space (55) in which an electromagnet member (56) is mounted. The mounting space (55) may be formed by penetrating the device housing (53) in the front-rear direction, but alternatively, the mounting space (55) may have a structure in which one direction is shielded.

[0076] A plurality of member fixing holes (53a) may be formed in the device housing (53). In this embodiment, the member fixing holes (53a) may be positioned in a recessed location on the side of the device housing (53). The member fixing holes (53a) may be for fixing the electromagnet member (56) to the mounting space (55) using a fastener (not shown).

[0077] The mounting space (55) may be configured as a roughly cuboidal three-dimensional space. The mounting space (55) may have various shapes depending on the shape of the electromagnet member (56). When the electromagnet member (56) is inserted into the mounting space (55) and a fastener is inserted through the member fixing hole (53a), the electromagnet member (56) can be fixed to the mounting space (55).

[0078] A connecting space (54) may be formed at the upper and lower portions of the device housing (53). The connecting space (54) can be viewed as a working space for connecting the device housing (53) and the guide post (51). In this embodiment, the connecting space (54) may be formed by penetrating the device housing (53).

[0079] The above-mentioned connecting space (54) can be formed by penetrating the device housing (53) in the front-rear direction, and a fastening hole (53b) penetrating in the up-down direction can be connected to the connecting space (54). The fastening hole (53b) is for mounting a bracket (52) for coupling between the guide post (51) and the device housing (53), and a separate fastening member (B, see FIG. 7) can also be fastened to the fastening hole (53b).

[0080] An electromagnet member (56) may be placed in the mounting space (55). At least a portion of the surface of the electromagnet member (56) may be exposed to the outside of the mounting space (55) and may receive current. Unlike a permanent magnet, the electromagnet member (56) becomes magnetized when current flows through it and becomes unmagnetized when the current is cut off. Therefore, when current is allowed to flow through the electromagnet locking device (50) while the first side frame (30A) is pulled out, an attractive force due to magnetic force is generated between the electromagnet member (56) of the electromagnet locking device (50) and the armature plate (16), thereby locking the first side frame (30A).

[0081] At this time, the electromagnet member (56) may include an electromagnet core and a coil wound around the electromagnet core. When current is applied to the coil, a strong magnetic force is generated, thereby attracting the armature plate (16) and making the first side frame (30A) locked. The electromagnet member (56) includes a rectangular plane corresponding to the armature plate (16), and this rectangular plane may be positioned to face the armature plate (16) when the first side frame (30A) is pulled out. At this time, only the portion of the electromagnet member (56) facing the plane of the armature plate (16) is exposed to the outside of the electromagnet locking device (50), and the remaining portion may be mounted inside the electromagnet locking device (50).

[0082] In this embodiment, the rectangular plane may be a coupling protrusion (57). The coupling protrusion (57) may be a plate-like structure that protrudes further toward the armature plate (16) from the surface of the electromagnet member (56). Since the coupling protrusion (57) protrudes relatively further from the electromagnet member (56), the coupling protrusion (57) can be considered as a part that substantially contacts the armature plate (16).

[0083] At this time, in this embodiment, the relationship between the surface area of ​​the electromagnet member (56), that is, the area (A) of the coupling protrusion (57), and the area (B) of the armature plate (16) in contact with it is 0.8*A≤B≤A. Referring to FIG. 12, the graph of FIG. 12 is the result of measuring the distance (mm) that the side frames (30A, 30B) slip into the inside of the main frame (10) when a load of a certain size (500kgf) is applied to the side frames (30A, 30B).

[0084] As can be seen, when the ratio (B / A) of the width (B) of the armature plate (16) and the width (A) of the connecting protrusion (57) is small, the distance over which the side frames (30A, 30B) slip is relatively long. That is, when the width (B) of the armature plate (16) is smaller than the width (A) of the connecting protrusion (57) by a certain range (less than 0.7), it is pushed by shear force. Conversely, when the ratio of the widths (B / A) is 0.8 or more, it can be seen that the distance over which the side frames (30A, 30B) slip is significantly reduced. However, when the ratio of the widths (B / A) becomes 1.0, the width (B) of the armature plate (16) and the width (A) of the connecting protrusion (57) become equal, so there is no need to make the armature plate (16) larger than that.

[0085] The above-mentioned electromagnet locking device (50) can be placed on the side frame (30A, 30B) at a height corresponding to half of the total height (H1) of the side frame (30A, 30B). Looking at FIG. 3, if we compare the total height (H1) of the first side frame (30A) with the height (H2) from the bottom of the first side frame (30A) where the electromagnet locking device (50) is placed, the total height (H1) of the first side frame (30A) can be twice the height (H2) where the electromagnet locking device (50) is placed.

[0086] Looking at FIG. 11, FIG. 11 is a mode shape showing the analysis results of structural weak points for the structure of FIG. 3. As shown here, considering the direction in which an external force is applied during movement (arrow P), it may be most desirable for the electromagnet locking device (50) to be positioned at the center of the side frames (30A, 30B) based on the height direction of the side frames (30A, 30B). In this way, even if a large external force is applied periodically during movement, the durability against the external force applied to the side frames (30A, 30B) can be increased through the optimal installation height of the electromagnet locking device (50).

[0087] In addition, as previously explained, in this embodiment, a guide post (51) may be connected to the electromagnet locking device (50), and the guide post (51) may form one side of the side frame (30A, 30B) connecting the upper and lower ends of the side frame (30A, 30B). At this time, the side frame (30A, 30B) may be equipped with a height adjustment rod together with the guide post (51) to form a square frame shape, thereby compensating for structural weaknesses of the side frame (30A, 30B), such as twisting or bending.

[0088] Looking at FIG. 3, the electromagnet locking device (50) may be positioned on the first side frame (30A) at a height corresponding to the installation height of the handle device (33). If the electromagnet locking device (50) is positioned at the same height as the handle device (33) to which the actual external force is transmitted, the durability against external force (torque) may be further increased.

[0089] The electromagnet locking device (50) can be positioned on the inside of the first side frame (30A) facing one end of the main frame (10) when the first side frame (30A) is withdrawn from the main frame (10). In FIG. 3, when comparing the total width (L1) of the first side frame (30A) with the distance (L2) from the left end of the first side frame (30A) where the electromagnet locking device (50) is positioned, it can be seen that the electromagnet locking device (50) is positioned to the left of the center of the first side frame (30A). That is, the electromagnet locking device (50) can be positioned on the left end of the first side frame (30A) that is close to the main frame (10). In this way, the electromagnet locking device (50) is covered as much as possible by the main frame (10) and the first side frame (30A) so that it is not exposed to the outside, and the withdrawal distance of the first side frame (30A) can also be maximized.

[0090] Referring to FIG. 6, guide posts (51) can be connected to the upper and lower parts of the device housing (53), respectively. The guide posts (51) can be connected to the upper and lower parts of the first side frame (30A), respectively, and can be connected to the upper and lower parts of the device housing (53) through the bracket (52) as previously described. Of course, the bracket (52) may be omitted, and the guide posts (51) may be directly connected to the device housing (53).

[0091] The guide post (51) may be a bar structure that extends in one direction. The guide post (51) may be installed so that the electromagnet locking device (50) is not installed directly on the first side frame (30A) but is first installed on the guide post (51), and is installed together with the guide post (51) when the guide post (51) is installed on the first side frame (30A).

[0092] The guide post (51) may increase the durability against twisting or bending of the first side frame (30A) by forming one side of the first side frame (30A) that connects the top and bottom of the first side frame (30A). To this end, in this embodiment, the guide post (51) may have a surface with an uneven structure. Looking at the cross-sectional view in FIG. 5, the guide post (51) can be seen to have a structure that is symmetrical in the front, back, left, and right directions and is made with an uneven structure. This uneven structure not only increases the durability against bending or twisting, but also reduces the weight of the exercise equipment including the guide post (51).

[0093] Although not shown, a sensing device may be provided on at least one of the main frame (10) or the side frames (30A, 30B). The sensing device can detect that the first side frame (30A) has been withdrawn from the main frame (10). When the sensing device detects that the first side frame (30A) has been withdrawn from the main frame (10), a control unit (not shown) can supply power to the electromagnet locking device (50). Accordingly, the electromagnet locking device (50) can automatically secure the first side frame (30A) to the main frame (10) without the user performing any separate operation.

[0094] Looking at FIG. 9, the structure of the electromagnet locking device (50) and the armature plate (16) is shown in a cross-sectional form. When power is applied to the electromagnet member (56) installed inside the device housing (53), the electromagnet member (56) may acquire a magnetic force. Accordingly, an attractive force may act between the electromagnet member (56) and the armature plate (16) facing it, and the electromagnet member (56) may be in close contact with the armature plate (16) in the direction of arrow ② in FIG. 9.

[0095] At this time, since the armature plate (16) is fixed to the main frame (10), the entire electromagnet locking device (50), including the electromagnet member (56), can be pressed in the direction of the armature plate (16) to eliminate play. In this way, the first side frame (30A) cannot move in the direction of being drawn into the main frame (10) and can be locked in a state where it cannot rotate relative to the main frame.

[0096] Therefore, the user does not need to perform the task of individually engaging a locking device, such as a latch, to secure the first side frame (30A). Furthermore, if the gap between the first side frame (30A) and the main frame (10) is eliminated, vibration and noise caused by the gap between the first side frame (30A) and the main frame (10) are prevented, and the user can use the exercise equipment more stably. Of course, the securing of the second side frame (30B) can also be done in the same way.

[0097] Meanwhile, FIG. 10 illustrates another embodiment of the electromagnet locking device (50). The same reference numerals are assigned to structures identical to the preceding embodiment, and a detailed description is omitted. In the embodiment illustrated in FIG. 10, the electromagnet locking device (50) can be movably installed on the side frames (30A, 30B). More precisely, the device housing (53) and the electromagnet member (56) constituting the electromagnet locking device (50) can be moved in a straight line in a direction closer to or further away from the armature plate (16).

[0098] Reference numeral 34a is a moving space formed in the side plate (34), and the electromagnet locking device (50) can be placed in the moving space (34a). Reference numeral S1 indicates the empty space remaining after the electromagnet locking device (50) moves toward the armature plate (16).

[0099] When the electromagnet lock (50) moves toward the armature plate (16), at least a portion of the electromagnet lock (50) may be caught on a stopper (25) formed on the main frame (10). The stopper (25) is fixed to the main frame (10) at a position adjacent to the armature plate (16) and can serve to catch the electromagnet lock (50). Since the stopper (25) has a protruding structure, the electromagnet lock (50) may be seen as moving into a relatively recessed space next to the stopper (25). Through this stopper (25), the first side frame (30A) may be more strongly fixed to the main frame (10).

[0100] Although not shown, the first side frame (30A) may be provided with an elastic member. The elastic member may provide elastic force to the electromagnet locking device (50) in a direction away from the stopper (25). Accordingly, when the power applied to the electromagnet member (56) is interrupted, the electromagnet locking device (50) returns to its original position by the elastic member, thereby filling the empty space (S1) again.

[0101] Meanwhile, in the preceding embodiments, the electromagnet locking device (50) was installed on the side frames (30A, 30B), but alternatively, the electromagnet locking device (50) may be placed on the main frame (10). Also, the armature plate (16) may be placed on the side frames (30A, 30B) at a position corresponding to the electromagnet locking device (50).

[0102] Next, the process of using the exercise equipment according to the present invention will be explained with reference to FIG. 15.

[0103] The user can first pull out the first side frame (30A) from the main frame (10) and rotate the height adjustment rod (32). When the exercise equipment is in a stored state, the handle device (33) provided on the height adjustment rod (32) faces inward toward the main frame (10) so that it can be stored inside the main frame (10). Therefore, after taking out the first side frame (30A), the user can rotate the height adjustment rod (32) so that the handle device (33) faces forward. This appearance is illustrated in FIG. 13(a).

[0104] At this time, when power is applied to the electromagnet member (56) installed inside the device housing (53), the electromagnet member (56) may acquire a magnetic force. Accordingly, an attractive force may act between the electromagnet member (56) and the armature plate (16) facing it, and the electromagnet member (56) may be in close contact with the armature plate (16). Here, since the armature plate (16) is fixed to the main frame (10), the entire electromagnet locking device (50) including the electromagnet member (56) may be in close contact with the armature plate (16), thereby eliminating any gap. In this way, the first side frame (30A) cannot move in the direction of being drawn into the main frame (10) and may be locked in a state where it cannot rotate relative to the main frame.

[0105] Powering the above-mentioned electromagnet locking device (50) may be operated by a separate switch, but it may also be done automatically by the sensing device described above. Therefore, the user does not need to perform the task of attaching a locking device, such as a latch, to secure the first side frame (30A). Furthermore, when the gap between the first side frame (30A) and the main frame (10) is eliminated, vibration and noise caused by the gap between the first side frame (30A) and the main frame (10) are prevented, and the user can use the exercise equipment more stably.

[0106] And, if the user wants to release the first side frame (30A) and adjust the angle of the first side frame (30A), the power supplied to the electromagnet locking device (50) can be cut off by operating the switch. Also, if the rotation lever (38) is locked, it must be unlocked. To do this, the rotation lever (38) is lifted in the direction of arrow ①' so that the entire first side frame (30A) can be rotated left and right. Such a state is illustrated in FIG. 13(b).

[0107] When the user lifts the rotation lever (38), the rotation lever (38) rotates and causes the conversion link (not shown) to rotate. The conversion link can also raise the seating leg (37) upward while rotating. Therefore, the first side frame (30A) can be rotated as it is separated from the ground.

[0108] Next, the user can rotate the height adjustment rod (32) to adjust the handle device (33) to the desired direction. By rotating the height adjustment rod (32) in the direction of arrow X of FIG. 13(b), the user can adjust the handle device (33) to the desired direction.

[0109] Additionally, the user may adjust the height of the handle device (33). To adjust the height of the handle device (33), the fixing pin (not shown) must first be released. When the user grasps the rotating lever (38) and pulls the fixing pin while overcoming the elastic force of the fixing spring, the height of the handle device (33) can be adjusted.

[0110] And, as shown in FIG. 13(c), when the rotary lever (38) is rotated in the direction of arrow ①, the mounting leg (37) is lowered and supported on the installation surface, so the frame locking means can more firmly lock the rotation of the first side frame (30A). At the same time, the electromagnet locking device (50) can also be switched back to a locked state. The locking operation of the rotary lever (38) may occur before the height adjustment of the handle device (33). At this time, although not shown, the rotation of the height adjustment rod (32) may also be locked together in conjunction with the rotary lever (38).

[0111] Finally, the user can make the handle device (33) open. When the handle device (33) is rotated clockwise with respect to FIG. 13(c), the handle device (33) is opened and can be fixed in that state. The handle device (33) being fixed in the open state may be achieved by a separate locking device.

[0112] In the foregoing, although all components constituting an embodiment according to the present invention have been described as being combined or operating in combination, the present invention is not necessarily limited to such embodiments. That is, within the scope of the purpose of the present invention, all components may be selectively combined in one or more ways to operate. Furthermore, terms such as "include," "constitute," or "have" described above, unless specifically stated otherwise, mean that the relevant component may be inherent; thus, they should be interpreted as allowing for the inclusion of additional components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. Terms commonly used, such as those defined in advance, should be interpreted in accordance with their meaning in the context of the relevant technology and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the present invention. Explanation of the symbols

[0113] 10: Mainframe 11: Top plate 13: Bottom plate 15: Main plate 16: Amateur plate 17: Display 30A: 1st side frame 30B: 2nd side frame 32: Height adjustment pole 50: Electromagnetic lock 51: Guidepost 52: Bracket 53: Device housing 56: Electromagnet component

Claims

Claim 1 An exercise device comprising: a main frame having a driving unit that generates an exercise load inside; a side frame configured to be stored in or withdrawn from the main frame and having a handle device disposed therein; and an electromagnet locking device disposed on the side frame and configured to be fixed to the main frame by magnetic force when current is applied; wherein the side frame is slid out from the main frame, and when the side frame is withdrawn, one end of the side frame is fixed to the main frame in a direction different from the withdrawal direction by the electromagnet locking device. Claim 2 In claim 1, the exercise device wherein the electromagnet locking device is positioned on the side frame at a height corresponding to half of the total height (H1) of the side frame. Claim 3 In claim 1, the exercise mechanism wherein the electromagnet locking device is positioned on the side frame at a height corresponding to the installation height of the handle device. Claim 4 In claim 1, the electromagnet locking device is a movement mechanism disposed on the inside of the side frame facing one end of the main frame when the side frame is withdrawn from the main frame. Claim 5 An exercise mechanism according to claim 1, wherein an armature plate is disposed on the main frame at a position facing the electromagnet locking device, and when current is applied to the electromagnet locking device, the electromagnet locking device is coupled to the armature plate. Claim 6 In claim 5, the armature plates are provided in multiple numbers along the height direction of the main frame, and the multiple armature plates are each coupled to the electromagnet locking device. Claim 7 The exercise apparatus according to claim 5, wherein the electromagnet locking device comprises: a device housing having a mounting space formed therein; and an electromagnet member disposed in the mounting space, having at least a portion of its surface exposed to the outside of the mounting space and capable of receiving an electric current. Claim 8 A motion mechanism according to claim 7, wherein the surface of the electromagnet member is provided with a coupling protrusion that protrudes further toward the armature plate. Claim 9 An exercise apparatus according to claim 7, wherein the relationship between the surface area (A) of the electromagnet member and the surface area (B) of the armature plate in contact therewith is 0.8*A≤B≤A. Claim 10 An exercise mechanism according to claim 1, wherein a guide post is connected to the upper and lower portions of the electromagnet locking device, respectively, and the guide post is fixed to the upper and lower portions of the side frame, respectively. Claim 11 An exercise mechanism according to claim 1, wherein a guide post is connected to the upper and lower surfaces of the electromagnet locking device, respectively, and a bracket is coupled between the guide post and the electromagnet locking device. Claim 12 An exercise mechanism according to claim 10, wherein the surface of the guide post is formed with an uneven structure. Claim 13 An exercise device according to claim 1, wherein the electromagnet locking device is installed on the side frame so as to be movable toward the main frame, and the main frame is provided with a stopper on which a part of the electromagnet locking device engages. Claim 14 An exercise mechanism according to claim 13, wherein the side frame is provided with an elastic member, and the elastic member provides elastic force to the electromagnet locking device in a direction away from the stopper. Claim 15 An exercise apparatus according to claim 1, wherein at least one of the main frame or the side frame is equipped with a sensing device capable of recognizing a state in which the side frame is withdrawn from the main frame, and when the sensing device senses the state in which the side frame is withdrawn, the control unit applies power to the electromagnet locking device. Claim 16 An exercise device according to claim 1, wherein the side frame comprises: an upper body disposed at the top; a lower body disposed at the bottom and extending parallel to the upper body; a height adjustment rod connecting the upper body and the lower body along the height direction of the side frame and having the handle device disposed therein; and a guide post extending parallel to the height adjustment rod and forming a rectangular frame shape together with the upper body, the lower body, and the height adjustment rod; wherein when the side frame is withdrawn from the main frame, the height adjustment rod is disposed at a position relatively farther from the main frame than the guide post, and the electromagnet locking device is disposed at the guide post. Claim 17 In claim 16, the exercise mechanism wherein the electromagnet locking device is shielded by a side plate disposed between the upper body and the lower body. Claim 18 In claim 16, the upper body and the lower body are each exercise devices that move along a guide rail provided on the main frame. Claim 19 The exercise mechanism according to claim 1, wherein the side frame is composed of a first side frame and a second side frame symmetrically provided on both sides of the main frame, and the electromagnet locking device is provided on the first side frame and the second side frame, respectively. Claim 20 An exercise apparatus comprising: a main frame having a driving unit that generates an internal exercise load; a side frame configured to be stored in or withdrawn from the main frame and rotatable relative to the main frame when withdrawn from the main frame; and an electromagnetic locking device disposed on either the main frame or the side frame, which is coupled to the opposing side frame or the main frame by magnetic force when current is applied to prevent relative movement between the side frame and the main frame; wherein the side frame slides out from the main frame, and when the side frame is withdrawn, one end of the side frame is fixed to the main frame in a direction different from the withdrawal direction by the electromagnetic locking device.

Images