Leg supporting mechanism for noon break chair

Abstract

The utility model belongs to the field of noon break chairs, and provides a leg supporting mechanism for a noon break chair, which comprises a supporting plate for supporting legs, the supporting plate is arranged on a supporting rod, the supporting rod is arranged on a chair frame in a sliding manner, a guide pipe is arranged on the chair frame, one end of the guide pipe is provided with a bushing, and the bushing is arranged on the guide pipe. A sliding sleeve is arranged at the end, inserted into the guide pipe, of the supporting rod, the outer wall of the sliding sleeve is in sliding contact fit with the inner wall of the guide pipe, the inner wall of the sliding sleeve and the outer wall of the supporting rod are arranged in a spaced mode, a supporting part is arranged on the inner wall of the sliding sleeve, and one side of the supporting part abuts against the supporting rod. The problems that in the prior art, due to the fact that the length of the guide sleeves is far smaller than that of the supporting rods, when the supporting plate is pulled, the supporting rods on the two sides are prone to moving asynchronously, the clamping phenomenon occurs, and the using effect is affected are solved.

Description

Technical Field

[0001] This utility model belongs to the field of nap chairs, and in particular relates to a leg support mechanism for nap chairs. Background Technology

[0002] The nap chair is mainly used for lunch breaks, short rests, or short naps. Its ergonomic design provides comfortable support and helps users quickly recover their energy. The backrest of the nap chair can be adjusted, and the bottom of the seat has a pull-out leg support mechanism.

[0003] Currently, some nap chairs with leg support mechanisms typically consist of a support plate, support rods, limiting components, and guide sleeves. For example, application number CN202222721138.3 discloses an adjustable backrest seat, which includes a footrest and a sliding rod. The sliding rod is U-shaped and slidably positioned under the seat. Both ends of the sliding rod are equipped with limiting components to prevent it from detaching from the seat during sliding. These limiting components are either limiting plates or limiting blocks. The footrest is rotatably mounted on the sliding rod. During a nap, the sliding rod can be pulled out, and the footrest can be flipped over to support the user's feet. After use, the footrest is flipped over for storage, and the sliding rod is returned to its original position for storage. However, because the length of the guide sleeves on both sides of the seat is significantly shorter than the length of the support rod (sliding rod), pulling out the support plate (footrest) can easily cause the support rods on both sides to move asynchronously, resulting in jamming and affecting the usability. Utility Model Content

[0004] This utility model addresses the technical problems existing in the aforementioned nap chairs by proposing a reasonably designed leg support mechanism for nap chairs that has an anti-tipping function, helps ensure the synchronization of the support rods, is less prone to jamming, and is highly practical.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a leg support mechanism for a nap chair, including a support plate for supporting the legs, the support plate being disposed on a support rod, the support rod being slidably disposed on a chair frame, a guide tube being disposed on the chair frame, a bushing being disposed at one end of the guide tube, and a sliding sleeve with an anti-tilting function being disposed at the end of the support rod that is inserted into the guide tube.

[0006] Preferably, the outer wall of the sliding sleeve slides in contact with the inner wall of the guide tube, the inner wall of the sliding sleeve is spaced apart from the outer wall of the support rod, and a support portion is provided on the inner wall of the sliding sleeve, with one side of the support portion abutting against the support rod.

[0007] Preferably, the sliding sleeve is provided with a limiting post, and the support rod is provided with a positioning hole that cooperates with the limiting post.

[0008] Preferably, the sliding sleeve has a cylindrical structure and includes two mating sliding plates, the sliding plates having an arc-shaped structure.

[0009] Preferably, each of the sliding pieces is provided with an abutment portion at the end that mates with another sliding piece, the outer wall of the abutment portion slidingly contacts the inner wall of the guide tube, and the inner wall of the abutment portion contacts the outer side of the support rod.

[0010] Preferably, the portion of the slide plate located between the abutment portion and the support portion is an elastic portion, the inner side of the elastic portion is spaced apart from the outer wall of the support rod, and the outer wall of the elastic portion slides in contact with the inner wall of the guide tube.

[0011] Preferably, the thickness of the elastic portion is less than the thickness of the abutting portion.

[0012] Preferably, the inner side of the elastic portion and the inner side of the abutting portion are provided with reinforcing portions.

[0013] Preferably, the thickness of the reinforcing part is less than the gap between the elastic part and the abutment part and the support rod.

[0014] Preferably, the two abutting parts and the two supporting parts are distributed in a cross direction inside the two sliding pieces.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] This utility model provides a leg support mechanism for a nap chair. The support rod is concealed by being inserted into a guide tube on the side of the chair frame. A sliding sleeve serves as a guide and anti-tipping element, reducing the swaying of the support rod end within the tube and effectively improving its smooth movement within the guide tube. The sliding sleeve consists of two sliding pieces, facilitating assembly and allowing for easy engagement of the two pieces to form the sleeve. A reinforcing part enhances the strength of the engagement part. An elastic part ensures a close fit with the inner wall of the guide tube. By distributing the engagement and support parts to the left, right, up, and down positions of the support rod, the main directions of swaying are effectively covered, providing a corresponding limiting effect. This utility model solves the problem in existing technology where the guide sleeve is much shorter than the support rod, leading to asynchronous movement of the support rods on both sides when the tray is pulled out, causing jamming and affecting usability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of a leg support mechanism for a nap chair provided as an embodiment;

[0019] Figure 2 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0020] Figure 3 A perspective view of the slider provided in the embodiment;

[0021] Figure 4 A working diagram of a leg support mechanism for a nap chair;

[0022] In the above figures: 1. Chair frame; 2. Support plate; 3. Support rod; 4. Guide tube; 5. Bushing; 6. Sliding sleeve; 7. Sliding plate; 71. Support part; 72. Limiting post; 73. Abutting part; 74. Elastic part; 75. Reinforcing part. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Examples, such as Figures 1-4 As shown, the present invention provides a leg support mechanism for a nap chair, including a support plate 2 for supporting the legs. The support plate 2 is rotatably mounted on a support rod 3, and the support rod 3 is slidably mounted on a chair frame 1. The support plate 2 can be rotated 180° and mounted on the chair frame 1. This structure is the same as the prior art and will not be described in detail here. To fold up the support plate 2, simply rotate the support plate 2 between the two support rods 3 and then push it to the bottom of the chair frame 1. The chair frame 1 is provided with a guide tube 4, one end of which is provided with a bushing 5. The support rod 3 is provided with a sliding sleeve 6 with an anti-tilting function at the end where it is inserted into the guide tube 4.

[0026] Specifically, the bushing 5 is provided with a claw, and the guide tube 4 is provided with a groove that cooperates with the claw to prevent the bushing 5 from separating from the guide tube 4. The bushing 5 is located at the end of the guide tube 4 to limit movement and provide a certain degree of sealing, preventing dust from entering the mating surface between the guide tube 4 and the sliding sleeve 6. The guide tube 4 is longer than the guide sleeve in the prior art, basically longer than the retractable length of the support rod 3. The support rod 3 is hidden by inserting it into the guide tube 4 on the side of the chair frame 1. The sliding sleeve 6 is used as the support structure inside the support rod 3 and the guide tube 4. The sliding mating surface between the sliding sleeve 6 and the guide tube 4 can be smoothed. Here, the sliding sleeve 6 plays a guiding and anti-tipping role, reducing the shaking of the end of the support rod 3 inside the tube and effectively improving the smooth movement of the support rod 3 inside the guide tube 4.

[0027] Furthermore, the outer wall of the sliding sleeve 6 provided by this utility model slides in contact with the inner wall of the guide tube 4. The inner wall of the sliding sleeve 6 is spaced apart from the outer wall of the support rod 3. A support portion 71 is provided on the inner wall of the sliding sleeve 6, and one side of the support portion 71 abuts against the support rod 3. The support portion 71 can directly support the support rod 3, reducing the amount of swaying of the support rod 3 in the direction perpendicular to its own axis.

[0028] Furthermore, the sliding sleeve 6 is provided with a limiting post 72, and the support rod 3 is provided with a positioning hole that mates with the limiting post 72. The engagement of the limiting post 72 and the positioning hole serves as a connection, ensuring that the sliding sleeve 6 moves synchronously with the support rod 3, and preventing the support rod 3 from wobbling. Preferably, this product uses two support rods 3 symmetrically distributed inside the sliding sleeve 6. By adding the sliding sleeve 6 to the two support rods 3, the synchronous movement of the two support rods 3 is effectively guaranteed when the tray 2 is pulled out.

[0029] To facilitate the assembly of the sliding sleeve 6 and the support rod 3, the sliding sleeve 6 provided by this utility model has a cylindrical structure and includes two sliding pieces 7 that work together. The sliding pieces 7 have an arc-shaped structure. The two sliding pieces 7 are joined together to form the sliding sleeve 6, which allows the support part 71 to be effectively supported on the support rod 3. It also limits the maximum working diameter of the sliding sleeve 6, making it easy to install the sliding sleeve 6 together with the support rod 3 into the guide tube 4.

[0030] To improve the working performance of the sliding sleeve 6, the sliding piece 7 provided in this utility model is provided with an abutment portion 73 at the end that mates with another sliding piece 7. The outer wall of the abutment portion 73 slides in contact with the inner wall of the guide tube 4, and the inner wall of the abutment portion 73 contacts the outer side of the support rod 3. The thickness of the abutment portion 73 can be slightly increased to increase the mating area of ​​the two sliding pieces 7, improve the stability of the mating of the ends of the two sliding pieces 7, and prevent misalignment.

[0031] To enhance the anti-tipping effect of the sliding sleeve 6 on the movement of the support rod 3, the portion of the sliding plate 7 located between the abutment portion 73 and the support portion 71 provided in this invention is an elastic portion 74. The inner side of the elastic portion 74 is spaced apart from the outer wall of the support rod 3, and the outer wall of the elastic portion 74 slides in contact with the inner wall of the guide tube 4. By using the elastic portion 74 as a transition structure between the support portion 71 and the abutment portion 73, when the support rod 3 tends to sway, the elastic portion 74 can perform a corresponding buffering action and regain its restorative tendency, thus providing a pressure balancing effect and further improving the anti-sway effect of this device.

[0032] In order to improve the buffering performance of the slider 7, the thickness of the elastic part 74 of this invention is less than the thickness of the abutting part 73. This can appropriately ensure the toughness of the elastic part 74 and leave sufficient margin in the radial range, so that the elastic part 74 can play its elastic role and improve the synchronicity of the simultaneous pulling action of the two support rods 3.

[0033] To improve the fatigue strength of the connection between the elastic part 74 and the abutment part 73, the present invention provides a reinforcing part 75 on the inner side of the elastic part 74 and the inner side of the abutment part 73. The thickness of the reinforcing part 75 is less than the gap between the elastic part 74, the abutment part 73 and the support rod 3. Therefore, while improving the fatigue strength of the connection between the elastic part 74 and the abutment part 73, the reinforcing part 75 will not significantly affect the working performance of the elastic part 74, so that the elastic part 74 and the guide tube 4 have a better fit.

[0034] To improve the balance of the support rod 3, the two abutment parts 73 and two support parts 71 provided by this utility model are distributed in a cross direction inside the two sliding pieces 7, preferably in a positive cross direction. By distributing the abutment parts 73 and the support parts 71 in the upper and lower and left and right positions of the support rod 3, the main swaying direction of the support rod 3 can be covered, achieving a better limiting effect.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A leg support mechanism for a nap chair, comprising a support plate for supporting the legs, the support plate being disposed on a support rod, the support rod being slidably disposed on a chair frame, characterized in that, The chair frame is provided with a guide tube, one end of which is provided with a bushing, and the support rod is provided with a sliding sleeve at the end where it is inserted into the guide tube.

2. The leg support mechanism for a nap chair according to claim 1, characterized in that, The outer wall of the sliding sleeve slides in contact with the inner wall of the guide tube. The inner wall of the sliding sleeve is spaced apart from the outer wall of the support rod. A support portion is provided on the inner wall of the sliding sleeve, and one side of the support portion abuts against the support rod.

3. A leg support mechanism for a nap chair according to claim 1 or 2, characterized in that, The sliding sleeve is provided with a limiting post, and the support rod is provided with a positioning hole that cooperates with the limiting post.

4. The leg support mechanism for a nap chair according to claim 1, characterized in that, The sliding sleeve has a cylindrical structure and includes two mating sliding plates, which are arc-shaped.

5. The leg support mechanism for a nap chair according to claim 4, characterized in that, Each of the sliding pieces is provided with an abutment portion at the end that mates with another sliding piece. The outer wall of the abutment portion slides in contact with the inner wall of the guide tube, and the inner wall of the abutment portion contacts the outer side of the support rod.

6. The leg support mechanism for a nap chair according to claim 5, characterized in that, The portion of the slide plate located between the abutment portion and the support portion is an elastic portion. The inner side of the elastic portion is spaced apart from the outer wall of the support rod, and the outer wall of the elastic portion slides in contact with the inner wall of the guide tube.

7. The leg support mechanism for a nap chair according to claim 6, characterized in that, The thickness of the elastic part is less than the thickness of the abutting part.

8. A leg support mechanism for a nap chair according to claim 6 or 7, characterized in that, The inner side of the elastic part and the inner side of the abutting part are provided with reinforcing parts.

9. A leg support mechanism for a nap chair according to claim 8, characterized in that, The thickness of the reinforcing part is less than the gap between the elastic part and the abutment part and the support rod.

10. A leg support mechanism for a nap chair according to claim 6, characterized in that, The two contact parts and two support parts are distributed in a cross direction inside the two slides.

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