Pedal with various adjusting structures and office chair

Abstract

The utility model relates to a pedal and office chair with various adjusting structures, which comprises a mounting piece, a first rotating arm, an angle locking component, a telescopic arm and a second rotating arm, the mounting piece is used for mounting the pedal, a rotating groove is arranged on the mounting piece, the first rotating arm extends into the rotating groove to be provided with an angle adjusting shaft, a mounting groove is arranged in the angle adjusting shaft, and the angle locking component is arranged on the second rotating arm. The angle locking assembly is mounted in the mounting groove, a plurality of locking positions are arranged on the inner side wall of the rotating groove, the angle adjusting shaft rotates in the rotating groove, and the angle locking assembly is switched among the locking positions so that angle adjustment between the mounting piece and the first rotating arm can be achieved, and telescopic adjustment between the first rotating arm and the telescopic arm can be achieved. Turnover adjustment is formed between the telescopic arm and the second rotating arm, and the second rotating arm abuts against the limiting plate for limiting when turning forwards and backwards. The pedal with various adjusting structures is improved, so that the pedal can be subjected to angle adjustment, telescopic adjustment and overturning adjustment.

Description

Technical Field

[0001] The utility model relates to the field of chairs, in particular to a footrest and an office chair with multiple adjustment structures. Background Art

[0002] In modern life, footrests, as accessories that enhance riding comfort, are widely used in various applications, including but not limited to office chairs, strollers, and assistive medical devices. These devices provide an additional support point, helping to relieve leg fatigue, promote blood circulation, and ultimately enhance the overall user experience.

[0003] To meet the needs of different users in different scenarios, footrest design often needs to consider its convenience and practicality. Currently, the most common footrest designs on the market use a telescopic and flip-up structure. This design allows the footrest to be stored when not in use, reducing space and maintaining the neatness and aesthetics of the equipment. Specifically, the footrest can be adjusted in length through a telescopic mechanism or folded and hidden under the seat cushion or other concealed location through a flip mechanism, allowing for quick storage and deployment.

[0004] However, while this retractable and flip-up structure improves the portability and space efficiency of the pedals to a certain extent, it still has some limitations in practical application. First, due to its relatively simple structural design, the pedals often lack sufficient adjustment function when extended, and cannot be precisely adjusted to individual user differences (such as height and leg length). As a result, users may not be able to find a pedal position that is completely suitable for them, which affects the comfort and performance of the pedals. Utility Model Content

[0005] The purpose of the present invention is to solve the above technical problems and provide a footrest and an office chair with multiple adjustment structures. The present application aims to improve the footrest with multiple adjustment structures so that the footrest can be adjusted in angle, extension and flipping.

[0006] The first pivot arm is provided with a first pivot arm, an angle locking assembly, a telescopic arm and a second pivot arm, wherein the second pivot arm is provided with a rotation slot, the first pivot arm is provided with an angle adjustment shaft extending toward the rotation slot, the angle adjustment shaft is provided with a mounting slot, the angle locking assembly is installed in the mounting slot, the inner side wall of the rotation slot is provided with a plurality of locking positions, the angle adjustment shaft rotates in the rotation slot, and the angle locking assembly switches between the plurality of locking positions to form angle adjustment between the mounting member and the first pivot arm, the first pivot arm is also provided with a telescopic slot, one side of the telescopic arm is telescopically arranged in the telescopic slot to form telescopic adjustment, the other side of the telescopic arm is also provided with a flip shaft and a limit plate, the second pivot arm is rotatably installed on the flip shaft to form flip adjustment, and the second pivot arm is limited by the limit plate when flipping forward and backward.

[0007] According to the footrest with multiple adjustment structures of the present application, the footrest of the present application can be installed on items such as office chairs that need to install a footrest through the mounting part. An angle adjustment is formed between the first rotating arm and the mounting part, so that the user can adjust the angle of the footrest extended from the mounting part. The first rotating arm can be switched between various positioning angles through the angle locking assembly. Telescopic adjustment is formed between the telescopic arm and the first rotating arm, so that the user can adjust the length of the footrest. Flipping adjustment is formed between the telescopic arm and the second rotating arm. The second rotating arm flips back and forth, which can facilitate the user to step on the second rotating arm or store the second rotating arm.

[0008] Furthermore, a ratchet bar is provided on the inner side wall of the rotation groove, and the plurality of locking positions are provided between the ratchet teeth on the ratchet bar. The angle locking assembly includes a locking tooth, and the locking tooth includes a tooth portion. The mounting groove has an opening corresponding to the direction of the ratchet bar. The tooth portion extends from the opening and extends into the locking position to be one-way locked with the ratchet bar, thereby locking the rotation angle of the first rotating arm in a one-way adjustable manner. The angle adjustment formed by the ratchet bar and the locking tooth is a state of being locked in one direction and being able to rotate and adjust the angle in the other direction. It is generally configured to be one-way angle adjustment when rotating upward and one-way locked when rotating downward.

[0009] Furthermore, the angle locking assembly further includes a first elastic member, and the locking tooth further includes a stopper, the stopper being received in the mounting slot. One side of the first elastic member presses against the inner wall of the mounting slot, and the other side presses against the stopper, allowing the tooth to elastically expand and contract within the opening. The first elastic member is a spring, and the elastic force of the first elastic member maintains contact between the locking tooth and the ratchet bar.

[0010] Furthermore, the angle locking assembly further comprises a top block, wherein the first rotating arm is provided with a movable groove connected to the mounting groove, and the top block is slidably disposed in the movable groove; when the top block extends from the movable groove into the mounting groove, the top block abuts against the limiting portion, the first elastic member is elastically compressed, the tooth portion disengages from contact with the ratchet bar, and the first rotating arm enters a free state in which it can freely rotate; when the top block is reset to the movable groove, the top block and the limiting portion are released from abutment, the first elastic member lifts the locking tooth, and the tooth portion contacts the ratchet bar, thereby restoring the adjustment state in which the rotation angle of the first rotating arm can be unidirectionally adjusted and locked. The locking tooth is disengaged by the ratchet bar and the locking tooth by the top block, thereby allowing the first rotating arm to enter a free state in which it can freely rotate; after the top block is reset, the locking tooth resumes contact with the ratchet bar under the action of the first elastic member, thereby allowing it to enter an angle adjustment state.

[0011] Furthermore, the rotating groove is further provided with a first limiting groove, into which the top block extends, and the top block moves in the first limiting groove. The two end surfaces of the first limiting groove corresponding to the movement path are a free end surface and an adjustment end surface. When the free end surface abuts against the top block, the top block extends from the movable groove into the mounting groove; when the adjustment end surface abuts against the top block, the top block returns to the movable groove. The first limiting groove cooperates with the top block so that when the first rotating arm is adjusted to a limit in one direction, the free end surface abuts against the top block, causing the top block to extend into the mounting groove. The top block releases the one-way locking state of the ratchet bar and the locking tooth, and the first elastic member is compressed, at which point the first rotating arm can be freely adjusted. When the first rotating arm is adjusted to an initial position for angle adjustment, the adjustment end surface abuts against the top block, causing the top block to return to the movable groove. The first elastic member releases its elastic force, and when the first rotating arm rotates until the locking tooth contacts the ratchet bar, the first rotating arm can resume angle adjustment.

[0012] Furthermore, the mounting member is provided with a first elastic positioning bead, and the first pivot arm is provided with a first positioning groove. The first pivot arm has a storage position, and when in the storage position, the first elastic positioning bead extends into the first positioning groove for positioning. The first elastic positioning bead is elastically retractable and cooperates with the first positioning groove to position the mounting member and the first pivot arm.

[0013] Furthermore, a second limiting slot is defined in the telescopic slot, and a limiting post and a roller are provided on the telescopic arm. The limiting post extends into the second limiting slot to limit the telescopic arm's extension length, while the roller rolls along the telescopic slot. The limiting post and the second limiting slot cooperate to prevent the telescopic arm from disengaging from the telescopic slot, and the roller ensures more stable rolling of the telescopic arm within the slot.

[0014] Furthermore, the telescopic arm is provided with a second elastic positioning bead, and the second pivoting arm is provided with a second positioning groove. During the flipping process of the second pivoting arm, the second elastic positioning bead extends into the second positioning groove for positioning. The second elastic positioning bead is elastically retractable and cooperates with the second positioning groove to position the telescopic arm and the second pivoting arm.

[0015] Furthermore, the second positioning slot is provided in plurality, so that the second rotating arm can be positioned in a plurality of positions, thereby preventing the second rotating arm from being positioned when operating the telescopic arm and the first rotating arm, without interfering with the movement of the first rotating arm and the telescopic arm, and without causing the second rotating arm to shake during the movement.

[0016] An office chair comprises a seat cushion and the above-mentioned footrest with multiple adjustment structures, wherein the footrest is mounted on the bottom of the seat cushion through a mounting piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a footrest with multiple adjustment structures according to the present invention.

[0018] Figure 2 It is a side view of the mounting member of the present invention.

[0019] Figure 3 This is an exploded view of the mounting member and the first rotating arm of the present invention.

[0020] Figure 4 for Figure 3 A partial enlarged view of .

[0021] Figure 5 This is an exploded view of the telescopic arm and the second rotating arm of the utility model.

[0022] Figure 6 This is a three-dimensional view of the pedal with multiple adjustment structures of the present invention when it is stored.

[0023] Figure 7 This is a side view of the office chair of the present invention when the footrest is stored.

[0024] Figure 8 This is a side view of the office chair of the present invention with the footrest unfolded.

[0025] Figure 9 This is another side view of the office chair of the present invention with the footrest unfolded. DETAILED DESCRIPTION

[0026] The utility model is described with reference to the accompanying drawings, which provide a footrest and an office chair with multiple adjustment structures.

[0027] like Figures 1 to 9The footrest and office chair with multiple adjustment structures shown in FIG. 1 include a mounting member 1, a first rotating arm 2, an angle locking assembly 3, a telescopic arm 4, and a second rotating arm 5. Figures 7 to 9 As shown, the footrest is mounted on the bottom of the seat cushion through the mounting member 1, so that when the user sits on the seat cushion of the office chair, the footrest can be extended forward and downward from the seat cushion by adjusting the angle and turning the footrest, and the user can conveniently put his feet on the footrest. At the same time, the footrest can also be adjusted in length. When the footrest is not needed, the footrest can be stored under the seat cushion by adjusting the angle, extension and turning the footrest. Figures 2 to 3 As shown, the mounting member 1 is provided with a plurality of fixing holes 11 , through which the mounting member 1 is fixed to the lower portion of the seat cushion.

[0028] like Figures 2 to 4 As shown, the mounting member 1 is also provided with a rotation slot 12, and the first rotating arm 2 is provided with an angle adjustment shaft 21 extending into the rotation slot 12, and a mounting slot 211 is provided in the angle adjustment shaft 21, and the angle locking assembly 3 is installed in the mounting slot 211. A plurality of locking positions are provided on the inner side wall of the rotation slot 12, and the angle adjustment shaft 21 rotates in the rotation slot 12, and the angle locking assembly 3 switches between the plurality of locking positions to form an angle adjustment between the mounting member 1 and the first rotating arm 2, so as to facilitate the user to adjust the angle of the footrest extended from the mounting member 1, and the first rotating arm 2 is also provided with a telescopic slot 22, and one side of the telescopic arm 4 is telescopically arranged in the telescopic slot 22 to form telescopic adjustment, so as to facilitate the user to adjust the length of the footrest, and the other side of the telescopic arm 4 is also provided with a flip shaft 43 and a limit plate 44, and the second rotating arm 5 is rotatably installed on the flip shaft 43 to form flip adjustment, and when the second rotating arm 5 flips forward and backward, it is restrained by the limit plate 44. The flipping of the second rotating arm 5 forward and backward can facilitate the user to step on the second rotating arm 5 or store the second rotating arm 5.

[0029] like Figure 2 and Figure 3When the cam 21 is in the unlocked position, the tooth 311 is locked in the unlocked position, and the tooth 311 is locked in the unlocked position, so that the cam 21 is locked and the unlocked position is locked.

[0030] like Figures 2 to 4 When the cam 31 is in the unlocked position, the locking tooth 31 is unlocked and the locking tooth 31 is unlocked, so that the cam 31 is unlocked and the locking tooth 31 is unlocked.

[0031] like Figures 2 to 4As shown, the angle locking assembly 3 further includes a top block 32, and the first rotating arm 2 is provided with a movable groove 212 connected to the mounting groove 211, and the top block 32 is slidably arranged in the movable groove 212; when the top block 32 extends into the mounting groove 211 from the movable groove 212, the top block 32 and the limiting portion 312 are abutted, the first elastic member 33 is elastically compressed, the tooth portion 311 is disengaged from the contact with the ratchet bar 121, and the first rotating arm 2 enters a free state in which it can rotate freely; when the top block 32 is reset to the movable groove 212, the top block 3 2 is released from the state of being in abutment with the limiting portion 312, the first elastic member 33 lifts the locking tooth 31, and the tooth portion 311 contacts the ratchet bar 121, thereby restoring the adjustment state in which the rotation angle of the first rotating arm 2 can be unidirectionally adjusted and locked. The locking tooth 31 is pressed down by the lifting block 32, so that the ratchet bar 121 and the locking tooth 31 are disengaged, thereby allowing the first rotating arm 2 to enter a free state of free rotation. After the lifting block 32 is reset, the locking tooth 31 is restored to contact with the ratchet bar 121 under the action of the first elastic member 33, thereby entering a state of angle adjustment.

[0032] like Figures 2 to 4 As shown, the rotating groove 12 is further provided with a first limiting groove 122, and the top block 32 extends into the first limiting groove 122, and the top block 32 moves in the first limiting groove 122. The two end surfaces corresponding to the movement path in the first limiting groove 122 are a free end surface 1221 and an adjustment end surface 1222. When the free end surface 1221 abuts against the top block 32, the top block 32 extends from the movable groove 212 into the installation groove 211; when the adjustment end surface 1222 abuts against the top block 32, the outer surface of the adjustment end surface 1222 opposite to the top block 32 is preferably an arcuate surface, which can facilitate the top block 32 to extend into the installation groove 211 and press the limiting portion 312 downward, and the top block 32 is reset to the movable groove 212. The first limiting groove 122 cooperates with the top block 32, so that when the unidirectional angle of the first rotating arm 2 is adjusted to the limit, the free end surface 1221 and the top block 32 are abutted against each other to make the top block 32 extend into the mounting groove 211, and the one-way stuck state of the ratchet bar 121 and the locking tooth 31 is released by the top block 32, and the first elastic member 33 is compressed. At this time, the first rotating arm 2 can be freely adjusted. When adjusted to the initial position for angle adjustment of the first rotating arm 2, the adjusting end surface 1222 and the top block 32 are abutted against each other to make the top block 32 return to the movable groove 212, and the first elastic member 33 releases the elastic force. When it is rotated until the locking tooth 31 contacts the ratchet bar 121, the first rotating arm 2 can be enabled to restart angle adjustment.

[0033] like Figure 2 and Figure 3As shown, the mounting member 1 is provided with a first elastic positioning bead 13, the first elastic positioning bead 13 includes a bead body and a second elastic member, the mounting member 1 is provided with a slot body, the second elastic member is arranged in the slot body, the bead body is arranged at the notch of the slot body, and the first rotating arm 2 is provided with a first positioning groove 23, as shown Figure 7 The first elastic positioning bead 13 is preferably used to position the storage position of the first rotating arm 2. When in the storage position, the bead is pressed by the second elastic member so that part of the bead extends into the first positioning groove 23 for positioning. The second elastic member is preferably a spring.

[0034] like Figure 5 and Figure 6 As shown, a second limiting groove 221 is provided in the telescopic groove 22, and a limiting column 41 and a roller 42 are provided on the telescopic arm 4. The limiting column 41 extends into the second limiting groove 221 to cooperate in limiting the telescopic length of the telescopic arm 4, and the roller 42 rolls along the telescopic groove 22. The limiting column 41 and the second limiting groove 221 cooperate to prevent the telescopic arm 4 from detaching from the telescopic groove 22, and the roller 42 allows the telescopic arm 4 to roll more stably in the telescopic groove 22.

[0035] The telescopic arm 4 is provided with a second elastic positioning bead 45. The specific structure of the second elastic positioning bead 45 is the same as the specific structure of the first elastic positioning bead 13, and adopts the same specifications and dimensions, thereby improving the versatility of product parts. The second rotating arm 5 is provided with a second positioning groove 51. During the flipping process of the second rotating arm 5, the second elastic positioning bead 45 extends into the second positioning groove 51 for positioning. The second elastic positioning bead 45 can be elastically extended and contracted, and cooperates with the second positioning groove 51 to position the position between the telescopic arm 4 and the second rotating arm 5.

[0036] The second positioning grooves 51 are provided with a plurality of Figure 5 As shown, multiple second positioning grooves 51 can enable the second rotating arm 5 to be positioned at multiple positions, thereby avoiding the second rotating arm 5 from being positioned when operating the telescopic arm 4 and the first rotating arm 2, without interfering with the movement of the first rotating arm 2 and the telescopic arm 4, and without causing the second rotating arm 5 to shake during the movement.

[0037] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. A pedal with multiple adjustment structures, characterized in that: The cam is mounted on a support frame, and the first support frame is mounted on a support frame. The support frame includes a first rotating arm, an angle locking assembly, a telescopic arm and a second rotating arm, wherein the mounting member is used for mounting a foot pedal, the mounting member is provided with a rotating slot, the first rotating arm is extended to the rotating slot and an angle adjustment shaft is provided, the angle adjustment shaft is provided with a mounting slot, the angle locking assembly is installed in the mounting slot, a plurality of locking positions are provided on the inner side wall of the rotating slot, the angle adjustment shaft rotates in the rotating slot, and the angle locking assembly switches between the plurality of locking positions to form angle adjustment between the mounting member and the first rotating arm, a telescopic slot is also provided on the first rotating arm, one side of the telescopic arm is telescopically arranged in the telescopic slot to form telescopic adjustment, and a flip shaft and a limit plate are also provided on the other side of the telescopic arm, the second rotating arm is rotatably installed on the flip shaft to form flip adjustment, and the second rotating arm is limited by the limit plate when flipping back and forth.

2. The pedal with multiple adjustment structures according to claim 1, characterized in that: A ratchet bar is provided on the inner side wall of the rotating groove, and the multiple locking positions are arranged between the ratchet teeth on the ratchet bar. The angle locking assembly includes a locking tooth, and the locking tooth includes a tooth portion. The mounting groove is provided with an opening corresponding to the direction of the ratchet bar, and the tooth portion extends from the opening and extends into the locking position to be unidirectionally locked with the ratchet bar, thereby locking the rotation angle of the first rotating arm in a unidirectionally adjustable manner.

3. The pedal with multiple adjustment structures according to claim 2, characterized in that: The angle locking assembly also includes a first elastic member, and the locking tooth also includes a limiting portion, which is accommodated in the mounting groove. One side of the first elastic member presses against the inner wall of the mounting groove, and the other side presses against the limiting portion, so that the tooth portion can elastically expand and contract at the opening.

4. The pedal with multiple adjustment structures according to claim 3, characterized in that: The angle locking assembly also includes a top block, the first rotating arm is provided with a movable groove connected to the mounting groove, and the top block is slidably arranged in the movable groove; when the top block extends into the mounting groove from the movable groove, the top block is abutted against the limiting portion, the first elastic member is elastically compressed, the tooth portion is disengaged from the contact with the ratchet bar, and the first rotating arm enters a free state in which it can rotate freely; when the top block is reset to the movable groove, the top block and the limiting portion are released from the abutting state, the first elastic member lifts the locking tooth, the tooth portion contacts the ratchet bar, thereby restoring the adjustment state in which the rotation angle of the first rotating arm can be unidirectionally adjusted and locked.

5. The pedal with multiple adjustment structures according to claim 4, characterized in that: A first limiting groove is also provided in the rotating groove, and the top block extends into the first limiting groove. The top block moves in the first limiting groove. The two end faces corresponding to the movement path in the first limiting groove are a free end face and an adjustment end face. When the free end face abuts against the top block, the top block extends from the movable groove into the installation groove; when the adjustment end face abuts against the top block, the top block returns to the movable groove.

6. The pedal with multiple adjustment structures according to claim 1, characterized in that: The mounting member is provided with a first elastic positioning bead, the first rotating arm is provided with a first positioning groove, and the first rotating arm has a storage position. When in the storage position, the first elastic positioning bead extends into the first positioning groove for positioning.

7. The pedal with multiple adjustment structures according to claim 1, characterized in that: A second limiting groove is provided in the telescopic groove, and a limiting column and a roller are provided on the telescopic arm. The limiting column extends into the second limiting groove to cooperate with limiting the telescopic length of the telescopic arm, and the roller rolls along the telescopic groove.

8. The pedal with multiple adjustment structures according to claim 1, characterized in that: The telescopic arm is provided with a second elastic positioning bead, and the second rotating arm is provided with a second positioning groove. When the second rotating arm is flipped, the second elastic positioning bead extends into the second positioning groove for positioning.

9. The pedal with multiple adjustment structures according to claim 8, characterized in that: There are multiple second positioning grooves.

10. An office chair, characterized in that: The utility model comprises a seat cushion and a footrest with multiple adjustment structures according to any one of claims 1 to 9, wherein the footrest is mounted on the bottom of the seat cushion through a mounting member.

Images