Counterweight selection device and trainer equipped therewith

Abstract

The application relates to a weight selection device and a training device provided with the same, wherein the weight selection device comprises a connecting plate, a plurality of pins, a first elastic member and a selection assembly, the connecting plate is internally hollow and a regulating opening is arranged in the side wall, a plurality of weight blocks are arranged on one side of the connecting plate, the plurality of pins are respectively arranged in the plurality of weight blocks in sliding mode along a second axis, the second axis is perpendicular to a first axis, the first elastic member is arranged between the pins and the weight blocks, the first elastic member is used for normally driving the pins to move away from the weight blocks along the second axis, and the selection assembly is rotationally arranged on the side wall of the connecting plate; the weight selection device of the application converts the rotary motion of the selection assembly into the axial motion of the pins through the regulating opening of the connecting plate, so that the number of the weight blocks is selected, and the purpose of adjusting the resistance is achieved.

Description

Technical Field

[0001] This application belongs to the field of fitness equipment technology, and in particular relates to a weight selection device and a training machine equipped with the same. Background Technology

[0002] In recent years, with the popularization of fitness awareness, the number of people exercising has continued to rise, which in turn has led to a continuous increase in the demand for fitness equipment.

[0003] Traditional stacked weight training devices have a relatively simple method for selecting counterweights. They mainly use pins inserted into stacked counterweight blocks to load different numbers of counterweight blocks on the resistance end of the trainer, thereby creating different resistance during training.

[0004] However, traditional stacked counterweight training equipment is used indoors, and users need to have a certain understanding of the equipment's operating procedures. Using iron as counterweight in outdoor open environments poses safety hazards. Utility Model Content

[0005] To address the shortcomings of related technologies, this application provides a counterweight selection device that converts the rotational motion of the selection component into the axial motion of the pin through an adjustment port on the connecting plate, thereby selecting the number of counterweights and achieving the purpose of adjusting resistance, thus realizing the selection of counterweights inside the connecting plate.

[0006] On one hand, this application provides a weight selection device for selecting the number of weights connected to the resistance end of a trainer, wherein the resistance end slides along a first axis within a plurality of stacked weights, and the weight selection device includes:

[0007] A connecting plate having an adjustment port, and a plurality of counterweights located on one side of the connecting plate;

[0008] A plurality of pins are slidably inserted into a plurality of counterweights along a second axis, wherein the second axis is perpendicular to the first axis.

[0009] A first elastic element is disposed between the pin and the counterweight, and the first elastic element is used to normally drive the pin along the second axis away from the counterweight.

[0010] The selection component is rotatably mounted on the side wall of the connecting plate, and the rotation axis of the selection component is coaxial with the center line of the adjustment port.

[0011] When the selection component rotates and cuts between at least one of the pins and the connecting plate, the pins resist the first elastic element and slide into the counterweight block along the first axis to connect the resistance end;

[0012] Until the selection component stops rotating, all the counterweights that are being connected to or have been connected to the resistance end via the pins together constitute the motion resistance source of the trainer.

[0013] In some embodiments, the selection component includes:

[0014] The cutting element is rotatably mounted on the side wall of the connecting plate, and the rotation axis of the cutting element is coaxial with the center line of the adjustment port.

[0015] A cutting structure is provided on the cutting member, and the cutting structure is used to guide the cutting member to cut into the space between the pin and the connecting plate.

[0016] In some embodiments, the cutting structure includes:

[0017] A first inclined surface is provided on one end of the cutting member near the pin, and the first inclined surface is located at the beginning or end of the cutting member in the rotation direction.

[0018] When the cutting member rotates and cuts between the pin and the connecting plate, the first inclined surface is used to gradually widen the gap between the pin and the connecting plate until the end of the pin passes over the inclined surface.

[0019] In some embodiments, the cutting structure further includes:

[0020] The second inclined surface is provided on one end of the cutting member near the pin, and the second inclined surface is opposite to the first inclined surface at the beginning and end of the cutting member in the rotation direction;

[0021] When the insert is rotated clockwise or counterclockwise to cut in, the first or second inclined surface is used to gradually widen the gap between the pin and the connecting plate until the end of the pin passes over the inclined surface.

[0022] In some embodiments, the counterweight selection device further includes:

[0023] A limiting component is disposed on one side of the selection component, and the limiting component is used to limit the starting position and the ending position of the rotation of the selection component.

[0024] In some embodiments, the limiting component includes:

[0025] A limiting port is provided on the connecting plate;

[0026] A limiting member, one end of which is slidably disposed within the limiting opening, and the other end of which is connected to the selection component;

[0027] The inner walls at both ends of the limiting port respectively stop and limit the sliding stroke of the limiting member, thereby limiting the starting position and ending position of the rotation of the selection component.

[0028] In some embodiments, the counterweight selection device further includes:

[0029] The cutting element is provided with multiple positioning holes arranged around its rotation axis;

[0030] A shift assembly is disposed on one side of the cutting member, the shift assembly being used to extend into any of the positioning holes during the rotation of the cutting member to generate tactile feedback for indexing positioning.

[0031] In some embodiments, the gear shift component includes:

[0032] The telescopic component is slidably installed on the side wall of the connecting plate. The end of the telescopic component away from the connecting plate is provided with a smooth spherical structure. The smooth spherical structure is used to reduce resistance when the telescopic component switches to different positioning holes.

[0033] A second elastic element is disposed between the telescopic element and the connecting plate. The second elastic element is used to normally drive the telescopic element to press against the cutting element.

[0034] When the cutting member rotates to the position hole corresponding to the telescopic member, the second elastic member pushes the telescopic member to extend into the position hole.

[0035] Furthermore, when the cutting member overcomes the force of the second elastic member by rotating, the telescopic member slides into the adjacent positioning hole, thereby achieving tactile feedback response for indexing positioning during the rotation of the cutting member.

[0036] In some embodiments, the counterweight selection device further includes:

[0037] An adjustment handle is provided, with one end connected to the selection component and the other end extending through the adjustment port out of the connecting plate. The adjustment handle is used to adjust the rotation angle of the selection component on the side of the connecting plate away from the selection component.

[0038] On the other hand, this application also provides a trainer, which is provided with the weight selection device described in any of the above claims to select the number of weights connected to the resistance end of the trainer.

[0039] In summary, this application provides a counterweight selection device and a trainer equipped with it. The adjustment port on the connecting plate converts the rotational motion of the selection component into the axial motion of the pin, thereby allowing selection of the number of counterweights and achieving safe resistance adjustment. A cutting structure guides the cutting component to cut between the pin and the connecting plate. A second inclined plane cooperates with a first inclined plane to reduce resistance when the cutting component rotates in any direction. A limiting component limits the starting and ending positions of the rotation of the selection component, preventing over-adjustment by inexperienced users. A stop component provides tactile feedback for indexing during the rotation of the cutting component, allowing users to clearly understand the adjustment process and enhancing the user experience. An adjustment handle facilitates user control of the selection component on the other side of the connecting plate.

[0040] Other features and advantages of this application will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practicing the invention. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0042] Figure 1 This is a perspective view of the counterweight selection device of this application;

[0043] Figure 2 This is an exploded view of the counterweight selection device of this application;

[0044] Figure 3 This is a schematic diagram showing the cooperation between the selection component and the pin of the counterweight selection device of this application.

[0045] In the picture:

[0046] 100. Connecting plate; 101. Adjustment port; 200. Pin; 300. First elastic element; 400. Selection component; 401. Cutting element; 402. First inclined surface; 403. Second inclined surface; 500. Limiting component; 501. Limiting port; 502. Limiting element; 600. Gear component; 700. Adjustment handle; 800. Positioning hole. Detailed Implementation

[0047] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation Example 1

[0052] Reference Appendix Figure 1 To be continued Figure 3 , Figure 1 This is a perspective view of the counterweight selection device of this application; Figure 2 This is an exploded view of the counterweight selection device of this application; Figure 3 This is a schematic diagram showing the engagement of the selection component 400 and the pin 200 in the counterweight selection device of this application; the following is in conjunction with the attached diagram. Figure 1 To be continued Figure 3 Specific embodiments are described below.

[0053] Reference Appendix Figure 1 and Figure 2This application provides a counterweight selection device for selecting the number of counterweights connected to the resistance end of a trainer. The resistance end slides along a first axis through multiple stacked counterweights. The counterweight selection device includes a connecting plate 100, a pin 200, a first elastic element 300, and a selection component 400.

[0054] An adjustment port 101 is provided through the side wall of the connecting plate 100. Multiple counterweights are located on one side of the connecting plate 100. Multiple pins 200 are slidably inserted into the multiple counterweights along the second axis. The second axis is perpendicular to the first axis. A first elastic element 300 is provided between the pin 200 and the counterweight. The first elastic element 300 is used to normally drive the pin 200 away from the counterweight along the second axis. The selection component 400 is rotatably mounted on the side wall of the connecting plate 100. The rotation axis of the selection component 400 is coaxial with the center line of the adjustment port 101.

[0055] When the selection component 400 rotates and cuts into at least one pin 200 and the connecting plate 100, the pin 200 slides into the counterweight along the second axis against the first elastic element 300 to connect the resistance end; until the selection component 400 stops rotating, all the counterweights that are being connected or have been connected to the resistance end through the pin 200 together constitute the motion resistance source of the trainer.

[0056] It should be noted that, based on the connection method between the stacked counterweights and the resistance end of the trainer, when the bottommost pin 200 connects its corresponding counterweight to the resistance end, all the counterweights above it, starting from the counterweight corresponding to that pin 200, work together to form a load, thus jointly constituting the motion resistance source of the resistance end.

[0057] Therefore, all the counterweights that are being connected to or have been connected to the resistance end via the pin 200 refer to all the counterweights that the selection component 400 has pushed or is pushing the pin 200 to connect to the resistance end in a single rotation stroke along a certain rotation direction, and together constitute the motion resistance source of the resistance end.

[0058] Reference Appendix Figure 1 The resistance end of the trainer is a rod-shaped component. Multiple connection ports are arranged along its length on the resistance end of the trainer. The inner diameter of the connection port is adapted to the outer diameter of the pin 200. When the pin 200 is inserted into the connection port, the pin 200 is connected to the resistance end of the trainer.

[0059] Specifically, at least one adjustment port 101 is provided on the side wall of the connecting plate 100 of the counterweight selection device. The adjustment port 101 is used to facilitate the user to perform adjustment operations on the connecting plate 100 from the outside.

[0060] The resistance end of the trainer slides along the first axis through multiple stacked counterweights. The resistance end of the trainer can drive any number of counterweights to move along the first axis, thereby making the movement resistance of the trainer different.

[0061] It should be noted that the extension direction of the first axis is the length direction of the resistance end of the trainer, and it is also the direction in which multiple counterweights are stacked. The positive direction of the first axis is the direction of overcoming gravity, and the negative direction of the first axis is along the direction of gravity.

[0062] Reference Appendix Figure 2 and Figure 3 The number of counterweight blocks corresponding to the pins 200 of the counterweight selection device is set to multiple, and the multiple pins 200 are slidably inserted into the multiple counterweight blocks along the second axis, and the second axis is perpendicular to the first axis.

[0063] The pin 200 is a cylindrical steel pin. The end of the pin 200 near the counterweight is used to extend into the counterweight along the second axis, and after extending into the counterweight, it continues to extend into the connection port to connect the resistance end of the trainer, thereby connecting the resistance end of the trainer with the counterweight.

[0064] Alternatively, the end of pin 200 near the counterweight is used to pull out the counterweight along the second axis, thereby disconnecting the resistance end of the trainer from the counterweight.

[0065] Based on the fact that the pin 200 extends into the counterweight and the connection port along the second axis, when the resistance end of the trainer drives the pin 200 to move along the positive direction of the first axis to overcome gravity, the counterweight applies resistance to the pin 200 along the opposite direction of the first axis. During training, the resistance end of the trainer and the counterweight jointly apply shear stress to the pin 200, and the pin 200 resists the shear stress to maintain the connection stability between the resistance end of the trainer and the counterweight.

[0066] Reference Appendix Figure 3 The end of the pin 200 away from the counterweight is also provided with a spherical boss, the outer diameter of which is larger than the outer diameter of the pin 200.

[0067] The spherical boss further includes an abutting end and a spherical end, wherein the abutting end faces the counterweight, and the first elastic member 300 is disposed between the abutting end and the counterweight, and the abutting end is used to abut against the first elastic member 300.

[0068] The spherical end faces away from the abutting end and towards the side wall of the connecting plate 100. Under the elastic force of the first elastic element 300, the spherical end abuts against the side wall of the connecting plate 100. In the direction of rotational cutting of the selection component 400, the gap between the spherical end and the side wall of the connecting plate 100 gradually increases, which facilitates the selection component 400 to gradually cut into the space between the spherical end and the side wall of the connecting plate 100 from the side with the larger gap, thereby helping to reduce the resistance when the selection component 400 rotates and cuts in.

[0069] Reference Appendix Figure 2 and Figure 3 The first elastic element 300 of the counterweight selection device includes, but is not limited to, a spring, a compression spring, and a spring sheet. The first elastic element 300 is located between the abutting end of the pin 200 and the counterweight block.

[0070] The first elastic element 300 is used to normally drive the pin 200 away from the counterweight along the second axis. That is, under the driving action of the first elastic element 300, the pin 200 is usually kept in a state where it cannot be inserted into the counterweight and connected to the resistance end of the trainer. At this time, the resistance end of the trainer cannot drive the counterweight through the pin 200.

[0071] Reference Appendix Figures 1 to 3 In some embodiments, the selection component 400 of the counterweight selection device is rotatably mounted on the side wall of the connecting plate 100, and the rotation axis of the selection component 400 is coaxial with the center line of the adjustment port 101. The selection component 400 includes a cutting member 401 and a guide component. The cutting member 401 is rotatably mounted on the side wall of the connecting plate 100, and the rotation axis of the cutting member 401 is coaxial with the center line of the adjustment port 101. A cutting structure is provided on the cutting member 401, and the cutting structure is used to guide the cutting member 401 to cut into the space between the pin 200 and the connecting plate 100.

[0072] Specifically, the cutting element 401 is a plate-shaped component rotatably mounted on the side wall of the connecting plate 100. The rotation axis of the cutting element 401 is coaxial with the center line of the adjustment port 101, and the movement trajectory of the cutting element 401 passes through the position between each pin 200 and the side wall of the connecting plate 100.

[0073] When the insert 401 rotates between the pin 200 and the side wall of the connecting plate 100, the distance between the spherical end of the pin 200 and the side wall of the connecting plate 100 increases from zero to equal the thickness of the insert 401. That is, the pin 200 is axially displaced along the second axis, thereby extending into the counterweight to connect the resistance end of the trainer. The distance of the axial displacement is equal to the thickness of the insert 401.

[0074] As the distance between the pin 200 and the side wall of the connecting plate 100 increases, it needs to resist the elastic force of the first elastic element 300. Therefore, the cutting part 401 will encounter a large rotational resistance during the rotational cutting process. The cutting structure is provided on the cutting part 401 and cooperates with the spherical end of the pin 200 to further reduce the rotational resistance encountered by the cutting part 401 during the rotational cutting process, and guides the cutting part 401 to smoothly cut between the pin 200 and the side wall of the connecting plate 100 to select the counterweight.

[0075] Reference Appendix Figure 2 and Figure 3In some embodiments, the cutting structure includes a first inclined surface 402, which is disposed on one end of the cutting member 401 near the pin 200. The first inclined surface 402 is located at the beginning or end of the cutting member 401 in the rotation direction. During the process of the cutting member 401 rotating to cut between the pin 200 and the connecting plate 100, the first inclined surface 402 is used to gradually widen the gap between the pin 200 and the connecting plate 100 until the spherical end passes the inclined surface position.

[0076] Specifically, the first inclined surface 402 is provided on the end of the insert 401 near the pin 200, that is, the first inclined surface 402 faces the spherical end of the pin 200.

[0077] The first inclined surface 402 is used to make the edge thickness of the cutting part 401 lower than the thickness of other positions, so that during the cutting process, it engages with the spherical end of the contact pin 200, causing the gap between the pin 200 and the connecting plate 100 to gradually widen until the spherical end of the pin 200 passes the inclined surface position, thereby pushing the pin 200 to gradually extend into the counterweight block to connect the resistance end of the trainer.

[0078] The first inclined surface 402 is located at the beginning or end of the cutting part 401 in the rotation direction.

[0079] It should be noted that the beginning or end of the cutting member 401 in the rotation direction should be set relative to each other according to the actual situation. In some embodiments, if the first inclined surface 402 is set as the beginning end of the cutting member 401 that first contacts the pin 200 in the clockwise rotation direction, then the end of the cutting member 401 that first contacts the pin 200 in the counterclockwise rotation direction is the end.

[0080] When the cutting element 401 rotates clockwise to increase the resistance of the trainer, the first inclined surface 402 is located at the beginning of the cutting element 401 in the rotation direction, which can reduce the rotational resistance during rotation adjustment.

[0081] Alternatively, when the cutting element 401 rotates counterclockwise to reduce the resistance of the trainer, the first inclined surface 402 is located at the tail end of the cutting element 401 in the rotation direction, which can reduce the rotational resistance during rotation adjustment.

[0082] Reference Appendix Figure 2 and Figure 3 In some embodiments, the cutting structure further includes a second inclined surface 403, which is disposed on one end of the cutting member 401 near the pin 200. The second inclined surface 403 is opposite to the first inclined surface 402 and located at the beginning and end ends in the rotation direction of the cutting member 401. During the cutting process of the cutting member 401 rotating clockwise or counterclockwise, the first inclined surface 402 or the second inclined surface 403 is used to gradually widen the gap between the pin 200 and the connecting plate 100 so that the spherical end of the pin 200 passes over the inclined surface position.

[0083] Specifically, the second inclined surface 403 is positioned opposite the first inclined surface 402 at the beginning and end ends of the cutting member 401 in the rotation direction.

[0084] The second inclined surface 403 is used to make the edge thickness of the cutting part 401 lower than the thickness of other positions, so that it cooperates with the spherical end of the contact pin 200 during the cutting process, so that the gap between the pin 200 and the connecting plate 100 gradually expands to accommodate the cutting part 401, thereby pushing the pin 200 to gradually extend into the counterweight block to connect the resistance end of the trainer.

[0085] When the cutting member 401 rotates clockwise to increase the resistance of the trainer, the first inclined surface 402 is provided at the beginning of the rotation direction of the cutting member 401, which can reduce the rotational resistance during rotation adjustment; and when the cutting member 401 rotates counterclockwise to reduce the resistance of the trainer, the second inclined surface 403 is provided at the end of the rotation direction of the cutting member 401, which can reduce the rotational resistance during rotation adjustment.

[0086] Alternatively, when the cutting member 401 rotates clockwise to increase the resistance of the trainer, the second inclined surface 403 is provided at the beginning of the rotation direction of the cutting member 401, which can reduce the rotational resistance during rotation adjustment; and when the cutting member 401 rotates counterclockwise to reduce the resistance of the trainer, the first inclined surface 402 is provided at the end of the rotation direction of the cutting member 401, which can reduce the rotational resistance during rotation adjustment.

[0087] By simultaneously providing a first inclined surface 402 and a second inclined surface 403 on the cutting element 401, the cutting element 401 can smoothly select the counterweight by rotating clockwise or counterclockwise. Compared with the cutting element 401 only having a first inclined surface 402 for rotation in one direction, the rotation space required during its rotation is reduced, thereby reducing the size of the instrument.

[0088] Reference Appendix Figure 1 and Figure 2 In some embodiments, the counterweight selection device further includes a limiting component 500, which is disposed on one side of the selection component 400. The limiting component 500 is used to limit the starting position and the ending position of the rotation of the selection component 400. The limiting component 500 includes a limiting port 501 and a limiting member 502. The limiting port 501 is inserted through the connecting plate 100. One end of the limiting member 502 is slidably disposed in the limiting port 501, and the other end is connected to the selection component 400. The inner walls of both ends of the limiting port 501 respectively stop and limit the sliding stroke of the limiting member 502, thereby limiting the starting position and the ending position of the rotation of the selection component 400.

[0089] Specifically, the limiting component 500 is used to limit the starting position and ending position of the rotation of the selection component 400, so that the user can clearly understand the current resistance adjustment process and avoid the selection component 400 from rotating too much, which would cause the pin 200 to fail to connect properly with the resistance end of the trainer.

[0090] The limiting component 500 includes a limiting port 501 and a limiting member 502. The limiting port 501 is an arc-shaped opening surrounding the adjustment port 101. The limiting port 501 is used to limit the limiting member 502 that slides within the limiting port 501, so that the movement trajectory of the limiting member 502 meets expectations, and the limiting member 502 starts and stops at a preset rotation start position and rotation end position. The resistance adjustment operation is simple and the adjustment process is safe and convenient.

[0091] The limiting component 502 includes, but is not limited to, bolts and studs. The limiting component 502 includes a connecting end and a limiting end, wherein the outer diameter of the limiting end is larger than the inner diameter of the limiting port 501, and the outer diameter of the connecting end is not larger than the inner diameter of the limiting port 501.

[0092] The connecting end of the limiting member 502 is used to pass through the limiting opening 501 to connect to the cutting member 401; the limiting end is used to prevent the limiting member 502 from being fully inserted into the connecting plate 100, so as to ensure that the limiting member 502 is always located in the limiting opening 501.

[0093] Reference Appendix Figure 2 In some embodiments, the counterweight selection device further includes positioning holes 800 and gear shift assembly 600. Multiple positioning holes 800 are arranged around the rotation axis of the insert 401. The positioning holes 800 are used to cooperate with the gear shift assembly 600 to provide tactile feedback.

[0094] The shift assembly 600 is located on one side of the insert 401. The shift assembly 600 is used to extend into any positioning hole 800 during the rotation of the insert 401 to generate tactile feedback for indexing positioning.

[0095] The gear shift assembly 600 includes a telescopic member and a second elastic member. The telescopic member slides through the side wall of the connecting plate 100. The end of the telescopic member away from the connecting plate 100 is provided with a smooth spherical structure. The smooth spherical structure is used to reduce resistance when the telescopic member switches to different positioning holes 800. The second elastic member is provided between the telescopic member and the connecting plate 100. The second elastic member is used to drive the telescopic member to press against the cutting member 401 under normal conditions.

[0096] When the cutting member 401 rotates to correspond with any positioning hole 800, the telescopic member is pushed into the positioning hole 800 by the second elastic member; and when the cutting member 401 overcomes the force of the second elastic member by rotation, the telescopic member slides into the adjacent positioning hole 800, thereby realizing the tactile feedback response of indexing positioning during the rotation of the cutting member 401.

[0097] Reference Appendix Figure 2 Specifically, the connecting plate 100 has a guide hole on its side wall, and the telescopic component slides through the guide hole. The outer diameter of the telescopic component is not greater than the inner diameter of the positioning hole 800, so that the telescopic component can extend into or slide out of the positioning hole 800.

[0098] The end of the telescopic component away from the connecting plate 100 is provided with a smooth spherical structure. The smooth spherical structure is used to reduce resistance when the telescopic component switches to different positioning holes 800. That is, when the insert 401 drives different positioning holes 800 to correspond with the telescopic component, the resistance of the telescopic component sliding between different positioning holes 800 is reduced by the smooth spherical structure.

[0099] The second elastic element includes, but is not limited to, springs, compression springs, and sheet springs. The second elastic element is disposed between the connecting plate 100 and the telescopic element. The second elastic element is used to normally drive the telescopic element to press against the cutting element 401. That is, under the driving action of the second elastic element, the telescopic element usually remains in the state of extending out of the guide hole and waiting to extend into the positioning hole 800. When the telescopic element does not correspond to the positioning hole 800, the telescopic element is pre-pressed into the guide hole by the second elastic element so that the smooth spherical structure on the telescopic element keeps in contact with the cutting element 401.

[0100] When the cutting member 401 drives the multiple positioning holes 800 to rotate, the telescopic member is located on the moving path of the positioning hole 800. When any positioning hole 800 corresponds to the telescopic member, the second elastic member pushes the telescopic member into the corresponding positioning hole 800 to form a positioning holding state, giving the user tactile feedback that the gear change is completed.

[0101] When the insert 401 continues to drive the corresponding positioning hole 800 to continue moving, and after the insert 401 overcomes the force of the second elastic member, the telescopic member slides along the surface of the insert 401 into the adjacent positioning hole 800, thereby realizing the tactile feedback response of indexing positioning.

[0102] Reference Appendix Figure 2 In some embodiments, the counterweight selection device further includes an adjustment handle 700, one end of which is connected to the selection component 400, and the other end extends through the adjustment port 101 and out of the connecting plate 100. The adjustment handle 700 is used to adjust the rotation angle of the selection component 400 on the side of the connecting plate 100 away from the selection component 400.

[0103] Specifically, one end of the adjustment handle 700 is connected to the cutting part 401, and the other end extends through the adjustment port 101 and out of the connecting plate 100, so that the user can safely adjust the rotation angle of the cutting part 401 outside the connecting plate 100, and further facilitate the user to drive the cutting part 401 to rotate, thereby selecting different sizes of trainer resistance.

[0104] The initial state of the counterweight selection device in this application before adjustment is as follows:

[0105] Each pin 200 remains in a state where it cannot be inserted into the counterweight and connected to the resistance end of the trainer under the action of the first elastic element 300. Furthermore, one end of the pin 200 with a spherical protrusion abuts against the side wall of the connecting plate 100. Since the pin 200 is not inserted into the connection port of the counterweight and the resistance end, the resistance end of the trainer is in an unloaded state.

[0106] When the weight selection device of this application is used to select the resistance of the trainer, the user holds the adjustment handle 700 extending from the adjustment port 101 and rotates the cutting part 401 clockwise or counterclockwise. The cutting part 401 rotates coaxially, causing its plate-shaped body to cut into the gap between the pin 200 and the side wall of the connecting plate 100.

[0107] During the process of the insert 401 rotating to insert the pin 200 between the insert and the connecting plate 100, the first inclined surface 402 or the second inclined surface 403 on the insert 401 contacts and presses the spherical end of the pin 200, so that the pin 200 overcomes the resistance of the first elastic element 300. The circumferential rotation of the insert 401 is converted into the radial displacement of the pin 200 along the second axis by the inclined surface guide, until the pin 200 is inserted into the connection port to connect the resistance end.

[0108] Until the cutting part 401 stops rotating, all the counterweights that are being connected to or have been connected to the resistance end of the trainer through the pin 200 together constitute the motion resistance source of the trainer, and at this time the selection of the resistance of the trainer is completed.

[0109] The user moves the resistance end of the trainer along the first axis by pulling it, which in turn moves the pin 200 and the counterweight together, thereby achieving the purpose of overcoming gravity for training. Specific Implementation Example 2

[0111] This application also provides a trainer equipped with the counterweight selection device described in the first specific embodiment above, for selecting the number of counterweights connected to the resistance end of the trainer.

[0112] This application provides a counterweight selection device and a trainer equipped with it. The adjustment port 101 on the connecting plate 100 converts the rotational motion of the selection component 400 into the axial motion of the pin 200, thereby selecting the number of counterweights and achieving safe resistance adjustment. This reduces the learning cost during training and enhances the user's training experience. A cutting structure guides the cutting component 401 to engage between the pin 200 and the connecting plate 100. A second inclined surface 403 cooperates with a first inclined surface 402 to reduce the resistance when the cutting component 401 rotates in any direction. A limiting component 500 limits the starting and ending positions of the rotation of the selection component 400, preventing inexperienced users from over-adjusting. A gear component 600 provides tactile feedback for indexing and positioning during the rotation of the cutting component 401, allowing the user to clearly understand the adjustment process and enhancing the user experience. An adjustment handle 700 facilitates user operation of the selection component 400 within the connecting plate 100.

[0113] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0114] The above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A weight selection device for selecting the number of weights connected to the resistance end of a trainer, wherein the resistance end slides along a first axis within a plurality of stacked weights, characterized in that... The counterweight selection device includes: A connecting plate having an adjustment port, and a plurality of counterweights located on one side of the connecting plate; A plurality of pins are slidably inserted into a plurality of counterweights along a second axis, wherein the second axis is perpendicular to the first axis. A first elastic element is disposed between the pin and the counterweight, and the first elastic element is used to normally drive the pin along the second axis away from the counterweight. The selection component is rotatably mounted on the side wall of the connecting plate, and the rotation axis of the selection component is coaxial with the center line of the adjustment port. When the selection component rotates and cuts into at least one of the pins and the connecting plate, the pins resist the first elastic element and slide into the counterweight block along the first axis to connect the resistance end; Until the selection component stops rotating, all the counterweights that are being connected to or have been connected to the resistance end via the pins together constitute the motion resistance source of the trainer.

2. The counterweight selection device according to claim 1, characterized in that, The selection component includes: The cutting element is rotatably mounted on the side wall of the connecting plate, and the rotation axis of the cutting element is coaxial with the center line of the adjustment port. A cutting structure is provided on the cutting member, and the cutting structure is used to guide the cutting member to cut into the space between the pin and the connecting plate.

3. The counterweight selection device according to claim 2, characterized in that, The cutting structure includes: A first inclined surface is provided on one end of the cutting member near the pin, and the first inclined surface is located at the beginning or end of the cutting member in the rotation direction. When the cutting member rotates and cuts between the pin and the connecting plate, the first inclined surface is used to gradually widen the gap between the pin and the connecting plate until the end of the pin passes over the inclined surface.

4. The counterweight selection device according to claim 3, characterized in that, The cutting structure also includes: The second inclined surface is provided on one end of the cutting member near the pin, and the second inclined surface is opposite to the first inclined surface at the beginning and end of the cutting member in the rotation direction; When the insert is rotated clockwise or counterclockwise to cut in, the first or second inclined surface is used to gradually widen the gap between the pin and the connecting plate until the end of the pin passes over the inclined surface.

5. The counterweight selection device according to claim 1, characterized in that, Also includes: A limiting component is disposed on one side of the selection component, and the limiting component is used to limit the starting position and the ending position of the rotation of the selection component.

6. The counterweight selection device according to claim 5, characterized in that, The limiting component includes: A limiting port is provided on the connecting plate; A limiting member, one end of which is slidably disposed within the limiting opening, and the other end of which is connected to the selection component; The inner walls at both ends of the limiting port respectively stop and limit the sliding stroke of the limiting member, thereby limiting the starting position and ending position of the rotation of the selection component.

7. The counterweight selection device according to claim 2, characterized in that, Also includes: The cutting element is provided with multiple positioning holes arranged around its rotation axis; A shift assembly is disposed on one side of the cutting member, the shift assembly being used to extend into any of the positioning holes during the rotation of the cutting member to generate tactile feedback for indexing positioning.

8. The counterweight selection device according to claim 7, characterized in that, The gear shift component includes: The telescopic component is slidably installed on the side wall of the connecting plate. The end of the telescopic component away from the connecting plate is provided with a smooth spherical structure. The smooth spherical structure is used to reduce resistance when the telescopic component switches to different positioning holes. A second elastic element is disposed between the telescopic element and the connecting plate. The second elastic element is used to normally drive the telescopic element to press against the cutting element. When the cutting member rotates to the position hole corresponding to the telescopic member, the second elastic member pushes the telescopic member to extend into the position hole. Furthermore, when the cutting element overcomes the force of the second elastic element by rotating, the telescopic element slides into the adjacent positioning hole, thereby achieving tactile feedback response for indexing positioning during the rotation of the cutting element.

9. The counterweight selection device according to any one of claims 1 to 8, characterized in that, Also includes: An adjustment handle is provided, with one end connected to the selection component and the other end extending through the adjustment port out of the connecting plate. The adjustment handle is used to adjust the rotation angle of the selection component on the side of the connecting plate away from the selection component.

10. A training device, characterized in that, The trainer is provided with a counterweight selection device as described in any one of claims 1 to 9, for selecting the number of counterweights connected to the resistance end of the trainer.

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