Foot support mechanism

Abstract

The utility model discloses a foot supporting mechanism which comprises a pedal body and supporting frames symmetrically arranged on the left side and the right side of the pedal body, the left end and the right end of the pedal body protrude and extend to form columnar connecting tables, first connecting holes are formed in the supporting frames in a sunken mode, and the supporting frames are connected to the connecting tables in a sleeving mode through the first connecting holes. The pedal body can be overturned forwards and backwards around the support frame; a positioning structure is arranged between the connecting table and the supporting frame and comprises a positioning unit, the positioning unit is connected to the side, away from the pedal body, of the connecting table, and the positioning unit abuts against a port of the first connecting hole, so that the supporting frame is clamped between the positioning unit and the pedal body; therefore, the supporting frame and the connecting table are relatively fixed in the axial direction. According to the foot supporting mechanism provided by the invention, the supporting frame is clamped between the positioning unit and the pedal body, so that the connecting strength between the supporting frame and the pedal body is relatively high, and the stability is relatively good; and moreover, the pedal body is low in injection molding cost and high in production efficiency.

Description

Technical Field

[0001] This utility model generally relates to the field of seating technology, and specifically to a foot support mechanism. Background Technology

[0002] Most existing chairs not only support users in a seated position but also allow the backrest to recline for rest, offering versatility. However, when a user reclines, their feet are unsupported and dangle, preventing them from resting in a natural and comfortable posture, resulting in insufficient comfort. To address this issue, existing chairs incorporate a pull-out footrest mechanism at the bottom of the seat. The footrest slides relative to the seat bottom via support frames on both sides and can be flipped forward and backward relative to the support frames. When not in use, the footrest is retracted into the seat bottom. To recline, the user can pull the footrest out and flip it to a suitable angle, ensuring that the footrest supports the user's feet and allows them to maintain a comfortable reclining posture, resulting in a higher level of comfort.

[0003] Most existing foot pedals are injection molded parts. To connect and fix them to the support frame, nuts are pre-embedded at both ends of the foot pedal during injection molding. When connecting to the support frame, a screw is inserted from one side of the support frame. The screw and the pre-embedded nut on the side of the foot pedal are screwed together and fixed. The nut of the screw presses the support frame against the foot pedal, so that the support frame and the foot pedal are relatively fixed in the axial direction.

[0004] However, the above solution has the following problems: If nuts are pre-embedded during the injection molding process of the foot pedal, it will not only cost more, but also make the injection molding time of a single foot pedal longer, extending the production cycle and resulting in poor production efficiency; moreover, if the support frame is only pressed to the foot pedal by the nut part of the screw, the connection strength between the screw and the support frame is poor, which makes the foot pedal risk falling off the support frame under heavy force, resulting in poor stability. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a foot support mechanism that, by clamping the support frame between the positioning unit and the foot pedal body, achieves high connection strength and good stability between the support frame and the foot pedal body; furthermore, the foot pedal body does not require pre-embedded nuts during injection molding, which not only reduces the injection molding cost of the foot pedal body, but also reduces the time required for injection molding of the foot pedal body, thereby improving production efficiency.

[0006] The effect of this utility model is achieved as follows:

[0007] This application provides a foot support mechanism, including a foot pedal body and support frames symmetrically arranged on the left and right sides of the foot pedal body. The left and right ends of the foot pedal body protrude to form columnar connecting platforms. The support frames are recessed with first connecting holes. The support frames are sleeved on the connecting platforms through the first connecting holes, allowing the foot pedal body to rotate back and forth around the support frames. A positioning structure is provided between the connecting platforms and the support frames. The positioning structure includes a positioning unit, which is connected to the side of the connecting platform away from the foot pedal body. The positioning unit abuts against the port of the first connecting hole, so that the support frame is clamped between the positioning unit and the foot pedal body, thereby fixing the support frame and the connecting platforms relatively in the axial direction.

[0008] Furthermore, the positioning unit is a plate-shaped pressure plate, which is detachably connected to the connecting platform, and the diameter of the pressure plate is wider than the first connecting hole. The first connecting hole is arranged through both sides. After the support frame is sleeved onto the connecting platform through the first connecting hole, the pressure plate abuts against the outside of the support frame and is fixedly connected to the connecting platform, thereby pressing the support frame tightly against the pedal body. By pressing the support frame tightly against the connecting platform with a larger diameter pressure plate, the connection strength between the support frame and the pedal body is higher, and the stability is better. The detachable connection of the pressure plate to the connecting platform makes the installation and operation of the foot support mechanism relatively simple.

[0009] Furthermore, the positioning structure also includes fasteners. The connecting platform has recessed first positioning holes, and the pressure plate has correspondingly hollowed-out second positioning holes. The fasteners pass through the first and second positioning holes, thereby fixing the pressure plate to the connecting platform. The fasteners can be pins, automatic screws, or other connecting components. The first connecting holes on the connecting platform can be open holes, meaning that nuts do not need to be pre-embedded during the injection molding of the pedal body. This not only reduces the injection molding cost of the pedal body but also reduces the time required for injection molding, thus improving production efficiency.

[0010] Furthermore, the fastener is a self-tapping screw, and the first positioning hole is a smooth hole. Self-tapping screws are not only easy to install, but also have good stability.

[0011] Furthermore, the support frame is recessed with a second connecting hole, which is coaxial with the first connecting hole and has a larger diameter. The second connecting hole is configured to accommodate the pressure plate. This allows the pressure plate to be hidden inside the support frame, thereby increasing the connection strength between the pressure plate and the support frame and further improving stability.

[0012] Furthermore, a cover plate is also provided on the support frame, which is embedded in the second connecting hole and configured to cover the pressure plate. This not only further enhances the connection strength between the pressure plate and the support frame, but also makes the cover plate and the outer end of the support frame a whole, thus making the foot support mechanism more integrated and aesthetically pleasing in appearance.

[0013] Furthermore, a rotation limiting structure is provided between the support frame and the connecting platform. This structure includes a limiting protrusion and an arc-shaped first limiting groove that engage with each other. The limiting protrusion is located in one of the side wall of the connecting platform and the inner wall of the first connecting hole, while the first limiting groove is located in the other. When the foot pedal body rotates relative to the support frame, the limiting protrusion slides within the first limiting groove, thereby limiting the rotation angle of the foot pedal body. Limiting the rotation angle of the foot pedal body simplifies the operation of the foot support mechanism.

[0014] Furthermore, the first connecting hole is recessed near the foot pedal body to form a first limiting groove, and a corresponding limiting protrusion is formed on the groove wall of the connecting platform. This allows the limiting protrusion to align perfectly with the first limiting groove and engage when the support frame is fitted onto the connecting platform, making assembly more convenient.

[0015] Furthermore, the support frame includes a connecting sleeve that fits onto the connecting platform at the front and a tubular connecting rod at the rear. A third connecting hole is recessed at the rear of the connecting sleeve, through which the front end of the connecting rod is engaged with the connecting sleeve. A screw is also provided on the connecting sleeve, which passes radially through the sleeve and screws onto the connecting rod, thus fixing the connecting rod and the connecting sleeve relatively securely. This not only ensures a high connection strength between the connecting rod and the connecting sleeve but also simplifies the installation and disassembly process.

[0016] Furthermore, the positioning unit is a positioning protrusion disposed on the side wall of the connecting platform, the support frame includes a connecting sleeve, a first connecting hole is recessed in the connecting sleeve, and a second limiting groove is formed in the side wall of the first connecting hole. When the connecting sleeve rotates around the connecting platform, the positioning protrusion slides in the second limiting groove. A clearance area extending in the left and right direction is recessed on the hole wall of the first connecting hole, and the clearance area is connected to the second limiting groove.

[0017] The positioning structure also includes a locking element, which is radially inserted into the connecting sleeve. One end of the locking element passes through the clearance area, and the locking element can slide radially along the connecting sleeve. The locking element has a switchable locked state and an unlocked state. In the unlocked state, the locking element slides to the clearance area, and the positioning protrusion can enter or exit the second limiting groove along the clearance area. In the locked state, the locking element slides to the stop clearance area, so that the positioning protrusion is stopped by the locking element and cannot exit the second limiting groove. The connecting sleeve and the connecting platform are relatively fixed in the axial direction. The locking method is simple and the operation is relatively convenient. Moreover, the connecting platform and the positioning protrusion are integrally molded, and the foot pedal body does not need to be pre-embedded with nuts during injection molding. This not only reduces the injection molding cost of the foot pedal body, but also reduces the time required for injection molding of the foot pedal body, thereby improving production efficiency.

[0018] Furthermore, the clearance area includes a first clearance groove horizontally hollowed out in the locking member and a second clearance groove recessed in the side wall of the first connecting hole. The locking member can rotate circumferentially. In the unlocked state, the locking member rotates to one end of the first clearance groove, which connects to the second clearance groove, and the other end connects to the second limiting groove, allowing the positioning protrusion to pass through the second clearance groove and the first clearance groove into the second limiting groove. In the locked state, the locking member rotates to the first clearance groove, which avoids the second clearance groove, preventing the positioning protrusion from disengaging from the second limiting groove. By rotating the locking member on the connecting sleeve, the positioning protrusion can be adjusted to lock or disengage from the second limiting groove, thereby further improving the convenience of locking operations between the connecting platform and the connecting sleeve.

[0019] Furthermore, a fourth connecting hole is radially hollowed out on the connecting sleeve. The fourth connecting hole is an internally threaded hole, and the locking component includes a threaded portion with external threads on its lower side. The threaded portion and the fourth connecting hole are threadedly engaged. This results in a high connection strength and good stability between the locking component and the connecting sleeve.

[0020] Furthermore, the locking component also includes an upper positioning part, the diameter of which is larger than that of the threaded part; in the locked state, the locking component is screwed in until the positioning part is tightly against the side wall of the connecting sleeve. This results in a stronger and more stable connection between the locking component and the connecting sleeve in the locked state, and the user only needs to screw the locking component all the way in to complete the locking operation, which is quite convenient.

[0021] Furthermore, the top of the locking element has a horizontal protrusion, the length of which is aligned with the orientation of the first clearance groove. Users can not only rotate the locking element by turning the protrusion, making adjustment easier, but also determine the orientation of the first clearance groove based on the current orientation of the protrusion, thus determining whether the locking element is locked or unlocked, further enhancing the ease of adjustment.

[0022] By clamping the support frame between the positioning unit and the pedal body, the connection strength between the support frame and the pedal body is high. Under external force, the support frame is not easily detached from the positioning unit and thus separates from the pedal body, resulting in good stability. Furthermore, the positioning unit and the connecting platform can be a one-piece molded structure or other detachable connection structure. This means that no pre-embedded nuts are needed during the injection molding of the pedal body, which not only reduces the injection molding cost of the pedal body but also reduces the time required for injection molding, thereby improving production efficiency. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1A three-dimensional structural diagram of the foot support mechanism provided in the embodiments of this application;

[0025] Figure 2 A three-dimensional structural diagram of the foot support mechanism when the foot pedal body flips forward, as provided in the embodiments of this application;

[0026] Figure 3 This is a schematic diagram of the connection structure between the support frame and the connecting platform provided in an embodiment of this application;

[0027] Figure 4 A cross-sectional structural diagram of the support frame and foot pedal body provided in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the connection structure between the connecting rod and the connecting sleeve provided in an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the connection structure between the connecting sleeve and the locking member provided in an embodiment of this application;

[0030] Figure 7 A schematic diagram of the connection structure between the connecting platform and the connecting sleeve in the locked state provided in an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the connection structure between the connecting platform and the connecting sleeve in the unlocked state provided in an embodiment of this application;

[0032] Figure 9 A schematic diagram illustrating the change process of the second rotation limiting mechanism when the foot pedal is flipped, as provided in the embodiments of this application.

[0033] The reference numerals in the attached drawings are as follows: 1-foot pedal body, 110-connecting platform, 111-first positioning hole, 112-limiting protrusion, 113-positioning protrusion, 2-support frame, 201-first connecting hole, 202-second connecting hole, 203-first limiting groove, 204-third connecting hole, 205-second limiting groove, 206-second clearance groove, 207-fourth connecting hole, 210-connecting sleeve, 220-connecting rod, 3-pressure plate, 301-second positioning hole, 4-fastener, 5-cover plate, 6-knob screw, 7-locking component, 701-first clearance groove, 710-threaded part, 720-positioning part, 730-protrusion. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0035] Please refer to the attached document. Figure 1-9 This application provides a foot support mechanism, including a foot pedal body 1 and support frames 2 symmetrically arranged on the left and right sides of the foot pedal body 1. Both ends of the foot pedal body 1 protrude to form columnar connecting platforms 110. The support frame 2 is recessed with a first connecting hole 201. The support frame 2 is sleeved on the connecting platform 110 through the first connecting hole 201, so that the foot pedal body 1 can rotate back and forth around the support frame 2. A positioning structure is provided between the connecting platform 110 and the support frame 2. The positioning structure includes a positioning unit. The positioning unit is connected to the side of the connecting platform 110 away from the foot pedal body 1, and the positioning unit abuts against the port of the first connecting hole 201, so that the support frame 2 is clamped between the positioning unit and the foot pedal body 1, thereby fixing the support frame 2 and the connecting platform 110 relatively in the axial direction.

[0036] In this embodiment, by clamping the support frame 2 between the positioning unit and the foot pedal body 1, the connection strength between the support frame 2 and the foot pedal body 1 is high. Under external force, the support frame 2 is not easily detached from the positioning unit and thus separates from the foot pedal body 1, resulting in good stability. Furthermore, the positioning unit and the connecting platform 110 can be an integrally molded structure or other detachable connection structures. That is, the foot pedal body 1 does not need to have pre-embedded nuts during injection molding, which not only reduces the injection molding cost of the foot pedal body 1 but also reduces the time required for injection molding, thereby improving production efficiency.

[0037] Please refer to the attached document. Figure 1-5 In some embodiments of this application, the positioning unit is a plate-shaped pressure plate 3. The pressure plate 3 is detachably connected to the connecting platform 110 and the diameter of the pressure plate 3 is wider than the first connecting hole 201. The first connecting hole 201 is provided through the left and right sides. After the support frame 2 is sleeved on the connecting platform 110 through the first connecting hole 201, the pressure plate 3 abuts against the outside of the support frame 2 and is fixedly connected to the connecting platform 110, thereby pressing the support frame 2 tightly against the foot pedal body 1.

[0038] In this embodiment, the support frame 2 is pressed tightly against the connecting platform 110 by the pressure plate 3 with a larger diameter, resulting in a high connection strength between the support frame 2 and the pedal body 1. This prevents the pedal body 1 from easily detaching from the support frame 2 and ensures good stability. Furthermore, the pressure plate 3 is detachably connected to the connecting platform 110, allowing the support frame 2 to be fitted onto the connecting platform 110 first, and then the pressure plate 3 and the connecting platform 110 to be connected and fixed, thereby clamping the support frame 2 between the pressure plate 3 and the pedal body 1. This simplifies the installation of the foot support mechanism.

[0039] Please refer to the attached document. Figure 1-5In some embodiments of this application, the positioning structure further includes a fastener 4. The connecting platform 110 is recessed with a plurality of first positioning holes 111, and the pressure plate 3 is correspondingly hollowed out with a plurality of second positioning holes 301. The fastener 4 passes through the first positioning holes 111 and the second positioning holes 301, thereby fixing the pressure plate 3 to the connecting platform 110.

[0040] In this embodiment, the pressure plate 3 and the connecting platform 110 are connected by a number of fasteners 4. The fasteners 4 can be pins, automatic screws, or other connecting parts, so that the first connecting hole 111 on the connecting platform 110 can be a smooth hole. That is, the foot pedal body 1 does not need to be pre-embedded with nuts during injection molding, which not only reduces the injection molding cost of the foot pedal body 1, but also reduces the time required for injection molding of the foot pedal body 1, thereby improving production efficiency.

[0041] Preferably, the connecting platform 110 is provided with two symmetrical first positioning holes 111, and the pressing plate 3 is also provided with two corresponding second positioning holes 301. This not only simplifies the connection structure, but also makes the connecting platform 110 and the pressing plate 3 relatively fixed in the circumferential direction, resulting in good stability.

[0042] Among them, the rear end of the support frame 2 is also screwed with a knob screw 6. The diameter of the nut part of the knob screw 6 is larger than that of the support frame 2. The knob screw 6 is configured to limit the sliding distance of the connecting frame 2 relative to the seat.

[0043] Please refer to the attached document. Figure 3-4 In some embodiments of this application, preferably, the fastener 4 is a self-tapping screw, and the first positioning hole 111 is a smooth hole. The self-tapping screw is not only easy to install, but also, when the self-tapping screw is screwed into the first positioning hole 111, it will squeeze out threads on the inner wall of the first positioning hole 111, thereby screwing the connecting platform 110 and the pressure plate 3 together and fixing them with good stability.

[0044] Please refer to the attached document. Figure 3-4 In some embodiments of this application, the support frame 2 is further recessed with a second connecting hole 202. The second connecting hole 202 is coaxial with the first connecting hole 201 and the diameter of the second connecting hole 202 is larger than that of the first connecting hole 201. The second connecting hole 202 is configured to accommodate the pressure plate 3.

[0045] In this embodiment, by providing a second connecting hole 202 to accommodate the pressure plate 3, the pressure plate 3 is hidden inside the support frame 2, thereby increasing the connection strength between the pressure plate 3 and the support frame 2 and further improving stability.

[0046] Please refer to the attached document. Figure 3-4In some embodiments of this application, a cover plate 5 is also provided on the support frame 2. The cover plate 5 is embedded in the second connecting hole 202 and configured to cover the pressure plate 3. This not only further enhances the connection strength between the pressure plate 3 and the support frame 2, but also connects the cover plate 5 and the outer end of the support frame 2 into a whole, thereby making the foot support mechanism more integrated and aesthetically pleasing in appearance.

[0047] Please refer to the attached document. Figure 3 In some embodiments of this application, a rotation limiting structure is also provided between the support frame 2 and the connecting platform 110. The rotation limiting structure includes a limiting protrusion 112 and an arc-shaped first limiting groove 203 that are mutually engaged. The limiting protrusion 112 is disposed in one of the side wall of the connecting platform 110 and the inner wall of the first connecting hole 201, and the first limiting groove 203 is disposed in the other of the side wall of the connecting platform 110 and the inner wall of the first connecting hole 201. When the foot pedal body 1 rotates relative to the support frame 2, the limiting protrusion 112 slides in the first limiting groove 203, thereby limiting the rotation angle of the foot pedal body 1.

[0048] In this embodiment, after the foot pedal body 1 is flipped forward to a suitable angle, the limiting protrusion 112 abuts against the groove wall of the first limiting groove 203, thereby allowing the foot pedal body 1 to be suspended at a suitable angle, making the foot support mechanism easier to use and operate.

[0049] Preferably, the maximum rotation angle of the foot pedal body 1 relative to the support frame 2 is 180°.

[0050] Please refer to the attached document. Figure 3 In some embodiments of this application, the first connecting hole 201 is recessed near the foot pedal body 1 to form a first limiting groove 203, and a corresponding limiting protrusion 112 is formed on the groove wall of the connecting platform 110. This allows the limiting protrusion 112 to be aligned with the first limiting groove 203 and snapped into place when the support frame 2 is sleeved on the connecting platform 110, making assembly more convenient.

[0051] Please refer to the attached document. Figure 5 In some embodiments of this application, the support frame 2 includes a connecting sleeve 210 that is sleeved on the front side of the connecting platform 110 and a tubular connecting rod 220 on the rear side. A third connecting hole 204 is recessed on the rear side of the connecting sleeve 210, and the front end of the connecting rod 220 is engaged with the connecting sleeve 210 through the third connecting hole 204. Furthermore, a screw is provided on the connecting sleeve 210, which passes radially through the connecting sleeve 210 and is screwed onto the connecting rod 220, thus fixing the connecting rod 220 and the connecting sleeve 210 relatively. This not only ensures a high connection strength between the connecting rod 220 and the connecting sleeve 210 but also simplifies the installation and disassembly operations.

[0052] Please refer to the attached document. Figure 6-9Other types of connection structures may also exist between the connecting platform 110 and the support frame 2 in this application:

[0053] In some embodiments of this application, the positioning unit is a positioning protrusion 113 disposed on the side wall of the connecting platform 110, the support frame 2 includes a connecting sleeve 210, a first connecting hole 201 is recessed in the connecting sleeve 210, and a second limiting groove 205 is formed in the side wall of the first connecting hole 201. When the connecting sleeve 210 rotates around the connecting platform 110, the positioning protrusion 113 slides in the second limiting groove 205. A clearance area extending in the left and right direction is recessed on the hole wall of the first connecting hole 201, and the clearance area communicates with the second limiting groove 205.

[0054] The positioning structure also includes a locking element 7, which is radially inserted into the connecting sleeve 210. One end of the locking element 7 is inserted into the clearance area, and the locking element 7 can slide radially along the connecting sleeve 210. The locking element 7 has a switchable locked state and an unlocked state. In the unlocked state, the locking element 7 slides to the clearance area, and the positioning protrusion 113 can enter or exit the second limiting groove 205 along the clearance area. In the locked state, the locking element 7 slides to the stop clearance area, so that the positioning protrusion 113 is stopped by the locking element 7 and cannot exit the second limiting groove 205. The connecting sleeve 210 and the connecting platform 110 are relatively fixed in the axial direction.

[0055] In this embodiment, the locking member 7 on the movable connecting sleeve 210 is used to block or avoid the avoidance area on the first connecting hole 201, thereby restricting or avoiding the positioning protrusion 113 from disengaging from the second limiting groove 205. The locking method is simple and the operation is relatively convenient. Moreover, the connecting platform 110 and the positioning protrusion 113 are integrally formed, meaning that the foot pedal body 1 does not need to be pre-embedded with nuts during injection molding. This not only reduces the injection molding cost of the foot pedal body 1, but also reduces the time required for injection molding of the foot pedal body 1, thereby improving production efficiency.

[0056] The second limiting groove 205 is an arc-shaped groove, meaning that the sliding distance of the positioning protrusion 113 within the second limiting groove 205 is limited, thereby restricting the rotation angle of the foot pedal body 1.

[0057] Please refer to the attached document. Figure 6-9In some embodiments of this application, the clearance area includes a first clearance groove 701 that is hollowed out in the horizontal direction in the locking member 7 and a second clearance groove 206 that is recessed in the side wall of the first connecting hole 201; the locking member 7 can rotate in its own circumference. In the unlocked state, the locking member 7 rotates to one end of the first clearance groove 701 and connects to the second clearance groove 206, and the other end connects to the second limiting groove 205, so that the positioning protrusion 113 can pass through the second limiting groove 205 along the second clearance groove 206 and the first clearance groove 701; in the locked state, the locking member 7 rotates to the first clearance groove 701 to avoid the second clearance groove 206, so that the positioning protrusion 113 is stopped by the locking member 7 and cannot get out of the second limiting groove 205.

[0058] In this embodiment, by rotating the locking member 7 on the connecting sleeve 210, the first clearance groove 701 and the second clearance groove 206 are driven to engage or avoid each other, so that the positioning protrusion 113 can be disengaged or fixed in the second limiting groove 205 without having to pull the locking member 7 out of the connecting sleeve 210 as a whole, thereby further improving the convenience of locking operation between the connecting platform 110 and the connecting sleeve 210.

[0059] Please refer to the attached document. Figure 6 In some embodiments of this application, the connecting sleeve 210 is provided with a fourth connecting hole 207 along the radial direction. The fourth connecting hole 207 is an internal threaded hole. The locking member 7 includes a threaded part 710 with an external thread on the lower side. The threaded part 710 and the fourth connecting hole 207 are threadedly engaged.

[0060] In this embodiment, by threading the locking member 7 to the connecting sleeve 210, the connection strength between the locking member 7 and the connecting sleeve 210 is high. During the use of the foot support mechanism, the locking member 7 is not easy to rotate, thereby preventing the connecting sleeve 210 from detaching from the connecting seat 110 when the user uses the foot pedal body 1, resulting in good stability.

[0061] Please refer to the attached document. Figure 7-8 In some embodiments of this application, the locking member 7 further includes an upper positioning portion 720, the diameter of which is larger than that of the threaded portion 710. In the locked state, the locking member 7 is screwed into the positioning portion 720, which is tightly against the side wall of the connecting sleeve 210. This results in a stronger connection between the locking member 7 and the connecting sleeve 210 in the locked state, preventing the locking member 7 from completely sinking into the connecting sleeve 210 and affecting subsequent adjustments. This provides better stability, and when the user needs to lock the connecting platform 110, they only need to screw the locking member 7 all the way down to complete the locking operation, which is quite convenient.

[0062] Please refer to the attached document. Figure 6 In some embodiments of this application, the top of the locking member 7 has a horizontal protrusion 730, the length direction of which is consistent with the orientation of the first clearance groove 701.

[0063] In this embodiment, by providing the protrusion 730, the user can not only rotate the locking member 7 by twisting the protrusion 730, making the adjustment operation of the locking member 7 more convenient, but also the orientation of the protrusion 730 is consistent with the first clearance groove 701. The user can determine the orientation of the first clearance groove 701 based on the current orientation of the protrusion 730, and thus determine whether the locking member 7 is in a locked or unlocked state, further improving the ease of adjustment operation of the locking member 7.

[0064] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means three or more.

[0065] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A foot support mechanism, characterized in that, The device includes a foot pedal body (1) and support frames (2) symmetrically arranged on the left and right sides of the foot pedal body (1). The left and right ends of the foot pedal body (1) both protrude to form columnar connecting platforms (110). The support frame (2) is recessed and provided with a first connecting hole (201). The support frame (2) is sleeved on the connecting platform (110) through the first connecting hole (201), so that the foot pedal body (1) can rotate back and forth around the support frame (2). A positioning structure is provided between the connecting platform (110) and the support frame (2). The positioning structure includes a positioning unit. The positioning unit is connected to the side of the connecting platform (110) away from the foot pedal body (1), and the positioning unit abuts against the port of the first connecting hole (201), so that the support frame (2) is clamped between the positioning unit and the foot pedal body (1), thereby fixing the support frame (2) and the connecting platform (110) relatively in the axial direction.

2. The foot support mechanism according to claim 1, characterized in that, The positioning unit is a plate-shaped pressure plate (3). The pressure plate (3) is detachably connected to the connecting platform (110), and the diameter of the pressure plate (3) is wider than the first connecting hole (201). The first connecting hole (201) is arranged to pass through the left and right sides. After the support frame (2) is sleeved on the connecting platform (110) through the first connecting hole (201), the pressure plate (3) abuts against the outside of the support frame (2) and is fixedly connected to the connecting platform (110), thereby pressing the support frame (2) tightly against the foot pedal body (1).

3. The foot support mechanism according to claim 2, characterized in that, The positioning structure also includes a fastener (4). The connecting platform (110) is recessed with a plurality of first positioning holes (111), and the pressure plate (3) is correspondingly hollowed out with a plurality of second positioning holes (301). The fastener (4) passes through the first positioning holes (111) and the second positioning holes (301) to fix the pressure plate (3) to the connecting platform (110).

4. The foot support mechanism according to claim 3, characterized in that, The fastener (4) is a self-tapping screw, and the first positioning hole (111) is a smooth hole.

5. The foot support mechanism according to claim 2, characterized in that, The support frame (2) is also recessed with a second connecting hole (202), the second connecting hole (202) and the first connecting hole (201) are coaxial and the diameter of the second connecting hole (202) is larger than that of the first connecting hole (201), and the second connecting hole (202) is configured to accommodate the pressure plate (3).

6. The foot support mechanism according to claim 5, characterized in that, The support frame (2) is also provided with a cover plate (5), which is embedded in the second connection hole (202) and configured to cover the pressure plate (3).

7. The foot support mechanism according to claim 2, characterized in that, A rotation limiting structure is also provided between the support frame (2) and the connecting platform (110). The rotation limiting structure includes a limiting protrusion (112) and an arc-shaped first limiting groove (203) that are interlocked with each other. The limiting protrusion (112) is provided on one of the side wall of the connecting platform (110) and the inner wall of the first connecting hole (201), and the first limiting groove (203) is provided on the other of the side wall of the connecting platform (110) and the inner wall of the first connecting hole (201). When the foot pedal body (1) rotates relative to the support frame (2), the limiting protrusion (112) slides in the first limiting groove (203), thereby limiting the rotation angle of the foot pedal body (1).

8. The foot support mechanism according to claim 7, characterized in that, The first connecting hole (201) is recessed near the foot pedal body (1) to form the first limiting groove (203), and the corresponding limiting protrusion (112) is formed on the groove wall of the connecting platform (110).

9. The foot support mechanism according to claim 1, characterized in that, The support frame (2) includes a connecting sleeve (210) that is sleeved on the front side of the connecting platform (110) and a tubular connecting rod (220) on the rear side. The connecting sleeve (210) has a third connecting hole (204) recessed on the rear side. The front end of the connecting rod (220) is engaged with the connecting sleeve (210) through the third connecting hole (204). The connecting sleeve (210) is also provided with a screw. The screw passes through the connecting sleeve (210) radially and is screwed onto the connecting rod (220), so that the connecting rod (220) and the connecting sleeve (210) are relatively fixed.

10. The foot support mechanism according to claim 1, characterized in that, The positioning unit is a positioning protrusion (113) disposed on the side wall of the connecting platform (110). The support frame (2) includes a connecting sleeve (210). The first connecting hole (201) is recessed in the connecting sleeve (210). The side wall of the first connecting hole (201) is recessed to form a second limiting groove (205). When the connecting sleeve (210) rotates around the connecting platform (110), the positioning protrusion (113) slides in the second limiting groove (205). The hole wall of the first connecting hole (201) is recessed to form a clearance area extending in the left and right direction. The clearance area is connected to the second limiting groove (205). The positioning structure also includes a locking member (7), which is radially inserted into the connecting sleeve (210). One end of the locking member (7) is inserted into the clearance area, and the locking member (7) can slide radially along the connecting sleeve (210). The locking member (7) has a switchable locked state and an unlocked state. In the unlocked state, the locking member (7) slides to avoid the clearance area, and the positioning protrusion (113) can enter or exit the second limiting groove (205) along the clearance area. In the locked state, the locking member (7) slides to stop the clearance area, so that the positioning protrusion (113) is stopped by the locking member (7) and cannot exit the second limiting groove (205). The connecting sleeve (210) and the connecting platform (110) are relatively fixed in the axial direction.

11. The foot support mechanism according to claim 10, characterized in that, The clearance area includes a first clearance groove (701) that is hollowed out in the horizontal direction and a second clearance groove (206) that is recessed in the side wall of the first connecting hole (201). The locking member (7) can rotate in its circumferential direction. In the unlocked state, the locking member (7) rotates to one end of the first clearance groove (701) to connect with the second clearance groove (206) and the other end to connect with the second limiting groove (205), so that the positioning protrusion (113) can pass through the second limiting groove (205) along the second clearance groove (206) and the first clearance groove (701). In the locked state, the locking member (7) rotates to the first clearance groove (701) to avoid the second clearance groove (206), so that the positioning protrusion (113) is stopped by the locking member (7) and cannot leave the second limiting groove (205).

12. The foot support mechanism according to claim 11, characterized in that, The connecting sleeve (210) has a fourth connecting hole (207) with a radial cutout. The fourth connecting hole (207) is an internal threaded hole. The locking member (7) includes a threaded part (710) with an external thread on the lower side. The threaded part (710) and the fourth connecting hole (207) are threadedly engaged.

13. The foot support mechanism according to claim 12, characterized in that, The locking member (7) also includes an upper positioning part (720), the diameter of which is larger than that of the threaded part (710); in the locked state, the locking member (7) is screwed into the positioning part (720) and closely abuts the side wall of the connecting sleeve (210).

14. The foot support mechanism according to claim 11, characterized in that, The top of the locking member (7) has a horizontal protrusion (730) extending outwards, and the length direction of the protrusion (730) is consistent with the orientation of the first clearance groove (701).

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