A table edge chair

Abstract

The utility model discloses a table edge chair, including first support rod, connecting rod and second support rod who are connected in proper order, and the end of first support rod and second support rod is equipped with the fixing device for clamping desktop, and the fixing device includes upper clamping structure and lower clamping structure, and the lower clamping structure includes the bent bar and the height adjusting mechanism of being equipped at the bent bar end, and the height adjusting mechanism includes the lift, the limiting piece and the lock piece of being movably arranged between the lift and the limiting piece, and the lower clamping structure moves through the lift relative to the limiting piece to adapt to the desktop of different thickness, and the limiting piece side is equipped with the limiting structure, and the lock piece includes operation part and locking part, and the operation part is used to receive external force, and drives the locking part to separate from the limiting structure to allow the lift to carry out height adjustment relative to the limiting piece, and the utility model discloses through pressing operation part and can quickly unlock and carry out height adjustment, and is automatically locked after loosening, and has the beneficial effect of quick, convenient adaptation of different desktop thickness.

Description

Technical Field

[0001] This utility model relates to the field of infant and child product technology, and in particular to a tableside chair. Background Technology

[0002] Tableside chairs, as a convenient form of auxiliary seating, are widely used in restaurants, leisure areas, and temporary workspaces. Their core advantage lies in their use of clamping mechanisms (usually including upper and lower clamping structures) to secure them to the edge of a table, enabling stable use without relying on ground support, and they are also portable and detachable. This design effectively solves the need for flexible seating deployment in space-constrained environments, making it a common choice for public places and homes.

[0003] In existing technologies, a screw and nut locking structure is commonly used to connect and fix the upper and lower clamping structures in order to achieve stable installation and height adaptation of table-side chairs. While this structure provides reliable clamping force, in actual use, users need to repeatedly tighten the screws to precisely adjust the distance between the clamping arms to adapt to different table thicknesses or change the chair height, a cumbersome and time-consuming process. This adjustment method is inefficient, significantly impacting product convenience and user experience. In summary, existing technologies have a technical deficiency in quickly adapting to different table thicknesses, which needs to be addressed. Utility Model Content

[0004] The main purpose of this utility model is to propose a tableside chair that aims to solve the technical problem that existing technologies cannot quickly adapt to different table thicknesses.

[0005] To achieve the above objectives, this utility model proposes a tableside chair, comprising a first support rod, a connecting rod, and a second support rod connected in sequence. The ends of the first and second support rods are provided with fixing devices for clamping the tabletop. The fixing devices include an upper clamping structure and a lower clamping structure. The lower clamping structure includes a bent rod and a height adjustment mechanism located at the end of the bent rod. The height adjustment mechanism includes a lifting component, a limiting component, and a locking component movably disposed between the lifting component and the limiting component. The lifting component can move along the extension direction of the limiting component. The limiting component has a limiting structure on its side, which includes a high contact surface and a low contact surface. The high contact surface and the low contact surface are alternately arranged on the surface of the limiting component. The locking component is embedded in the low contact surface to form a limiting effect.

[0006] Furthermore, the locking member includes an operating part and a locking part. The operating part is used to receive external force, and the locking part is used to cooperate with the limiting structure to realize or release the limiting function. The locking member is configured such that after the external force is applied to the operating part, the locking member moves, causing the locking part to disengage from the limiting structure, thereby allowing the lifting member to adjust its height relative to the limiting member.

[0007] Furthermore, the locking part includes a locking platform and a recess, wherein the locking platform extends into the low contact surface while the recess abuts against the high contact surface.

[0008] Furthermore, the limiting structure has a first transition surface perpendicular to the extension direction of the limiting member on the path from the low contact surface to the high contact surface, and a second transition surface inclined from high to low on the path from the high contact surface to the low contact surface.

[0009] Furthermore, the locking platform includes a first locking platform and a second locking platform, with the recess formed between the first locking platform and the second locking platform. The locking part is configured such that, after being engaged with the limiting structure, the first locking platform is embedded in the low contact surface and abuts against the first transition surface, and the second locking platform is embedded in the low contact surface and abuts against the second transition surface.

[0010] Furthermore, the lifting component is sleeved on the limiting component, and there is a sliding fit between the lifting component and the limiting component. The lifting component includes a window, and the locking component can extend into the window, thereby being embedded in the limiting structure.

[0011] Furthermore, the limiting member is provided with a sliding groove, and the lifting member is provided with a sliding block in the sliding groove. The lifting member is restricted to move within the range of the sliding groove by the sliding block.

[0012] Furthermore, the sliding block includes a first working surface and a second working surface for abutting the sliding groove. The first working surface is parallel to the sliding groove, and the second working surface is set as a curved surface.

[0013] Furthermore, the locking member has a rotating hole on its side, which is connected to the lifting member via a rotating shaft. The locking member is configured such that when an external force is applied to the operating part, the locking part swings away from the limiting structure with the rotating hole as the center of rotation, thereby releasing the limiting effect between the lifting member and the limiting member.

[0014] Furthermore, there are two locking components, with the extension directions of the first and second support rods as a reference, and the two locking components are set on the front and back of the lifting component with reference to this reference.

[0015] This utility model includes a first support rod, a connecting rod, and a second support rod connected in sequence. The ends of the first and second support rods are provided with a fixing device for clamping a tabletop. The fixing device includes an upper clamping structure and a lower clamping structure. The lower clamping structure includes a bent rod and a height adjustment mechanism located at the end of the bent rod. The height adjustment mechanism includes a lifting component, a limiting component, and a locking component movably located between the lifting component and the limiting component. The lower clamping structure adapts to tabletops of different thicknesses by moving the lifting component relative to the limiting component. The limiting component has a limiting structure on its side. The locking component includes an operating part and a locking part. The operating part receives external force and drives the locking part to disengage from the limiting structure, thereby allowing the lifting component to adjust its height relative to the limiting component. This utility model allows for quick unlocking and height adjustment by pressing the operating part, and automatically locks after releasing, providing a quick and convenient adaptation to different tabletop thicknesses. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial exploded view of the structure of this utility model;

[0018] Figure 3 Schematic diagram of the planar structure of the height adjustment mechanism Figure 1 ;

[0019] Figure 4 for Figure 3 Sectional view at point A1-A1;

[0020] Figure 5 An exploded plan view of the height adjustment mechanism;

[0021] Figure 6 Schematic diagram of the planar structure of the height adjustment mechanism Figure 2 ;

[0022] Figure 7 for Figure 6 Sectional view at point A2-A2;

[0023] Figure 8 This is an exploded view of a portion of the height adjustment mechanism.

[0024] Figure 9 This is a three-dimensional structural diagram of the limiting component;

[0025] Figure 10 This is a schematic diagram of the planar structure of the lifting component;

[0026] Figure 11 for Figure 10 Sectional view at point BB;

[0027] Figure 12 This is a three-dimensional structural diagram of the present invention after the height has been adjusted.

[0028] The above figures include the following reference numerals:

[0029] 1. First support rod; 2. Connecting rod; 3. Second support rod; 4. Fixing device; 41. Upper clamping structure; 411. Upper clamp; 42. Lower clamping structure; 421. Bent rod; 422. Lower clamp; 5. Height adjustment mechanism; 51. Lifting component; 511. Sliding block; 5111. First working surface; 5112. Second working surface; 512. Window; 513. Baffle; 52. Limiting component; 521. Limiting structure; 5211. High contact surface; 5212. Low contact surface; 5213. First transition surface; 5214. Second transition surface; 522. Sliding groove; 53. Locking component; 531. Operating part; 532. Locking part; 5321. Locking platform; 53211. First locking platform; 53212. Second locking platform; 5322. Recess; 533. Rotating hole. Detailed Implementation

[0030] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0031] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a tableside chair.

[0034] In this embodiment of the utility model, such as Figures 1 to 12As shown, the table-side chair includes a first support rod 1, a connecting rod 2, and a second support rod 3 connected in sequence. The ends of the first support rod 1 and the second support rod 3 are provided with fixing devices 4 for clamping the tabletop. The fixing device 4 includes an upper clamping structure 41 and a lower clamping structure 42. The lower clamping structure 42 includes a bent rod 421 and a height adjustment mechanism 5 located at the end of the bent rod 421. The height adjustment mechanism 5 includes a lifting member 51, a limiting member 52, and a locking member 53 movably disposed between the lifting member 51 and the limiting member 52. The lifting member 51 can move along the extending direction of the limiting member 52. The limiting member 52 has a limiting structure 521 on its side, which includes a high contact surface 5211 and a low contact surface 5212. The high contact surface 5211 and the low contact surface 5212 are alternately arranged on the surface of the limiting member 52. The locking member 53 is embedded in the low contact surface. The surface 5212 forms a limiting function. The core of this utility model is that the locking member 53 cooperates with the limiting structure 521, which is composed of alternating high contact surfaces 5211 and low contact surfaces 5212, so that the lifting member 51 can perform rapid stepless adjustment. Unlike the form of limiting at a specific position by a preset hole or threaded connection, it can be understood that the specific setting of the limiting structure 521 is diverse. Typical examples include toothed grooves, ratchet wheels, and wave guides. As long as the fitting and limiting of the high contact surface 5211 and the low contact surface 5212 are met, it is acceptable. It is worth noting that toothed grooves have the advantages of simple structure and easy processing in industrial practice, while ratchet wheels have stronger one-way self-locking properties and can prevent the locking member 53 from accidentally sliding down during use. In industrial production, it can be selectively applied according to objective needs, which will not be elaborated here.

[0035] In some embodiments of this utility model, to make the engagement action quicker and more convenient during height adjustment, the locking member 53 includes an operating part 531 and a locking part 532. The operating part 531 is used to receive external force, and the locking part 532 is used to cooperate with the limiting structure 521 to achieve or release the limiting function. The locking member 53 is configured such that after an external force is applied to the operating part 531, the locking member 53 moves, causing the locking part 532 to disengage from the limiting structure 521, thereby allowing the lifting member 51 to adjust its height relative to the limiting member 52. In this embodiment, the operating part 531 and the locking part 532 are planned separately, making the unlocking process of the lifting member 51 smoother. When it is necessary to unlock the lifting member 51 for height adjustment, the operating part 531 is moved. By performing a fixed action, the locking part 532 can change its position and thus disengage. Understandably, the action logic of the operating part 531 can take many forms. Among them, the case with rotation as the action logic is the preferred embodiment. For detailed embodiments of rotation, please refer to the following text. Here, we will continue to explain the operating part 531 further through some other embodiments to understand the concept of this utility model. It is easy to imagine that in actual use, the operating part 531 can be operated laterally to drive the locking part 532 to disengage from the limiting structure 521. An elastic reset mechanism can be provided between the operating part 531 and the lifting member 51 to reset the locking member 53, thereby facilitating use. The elastic reset mechanism can be installed using guide rails and elastic elements according to conventional design logic, which will not be elaborated here.

[0036] Specifically, a locking part 532 is proposed here to facilitate cooperation with the limiting structure 521 and fix the height. The locking part 532 includes a locking platform 5321 and a recess 5322. While the locking platform 5321 extends into the low contact surface 5212, the recess 5322 abuts against the high contact surface 5211. The limiting function is mainly achieved by the cooperation between the locking platform 5321 and the low contact surface 5212. The recess 5322 abutting against the high contact surface 5211 is used to further prevent the locking part 532 from shaking and accidentally sliding down.

[0037] More specifically, to make the locking platform 5321 move more smoothly along the limiting structure 521, the limiting structure 521 has a first transition surface 5213 perpendicular to the extension direction of the limiting member 52 on the path from the low contact surface 5212 to the high contact surface 5211. At the same time, a second transition surface 5214 inclined from high to low is provided on the path from the high contact surface 5211 to the low contact surface 5212. The function of the first transition surface 5213 is to prevent the locking platform 5321 from sliding down, while the function of the second transition surface 5214 is to prevent the locking platform 5321 from getting stuck. If it were conventionally designed as a plane, the locking platform 5321 might get stuck when it is subjected to an upward external force to detach from the low contact surface 5212, affecting the comfort of use.

[0038] More specifically, in order to achieve a tight fit between the locking member 53 and the limiting structure 521, a locking platform 5321 is proposed. The locking platform 5321 includes a first locking platform 53211 and a second locking platform 53212. The recess 5322 is formed between the first locking platform 53211 and the second locking platform 53212. The locking member 532 is configured such that, after being engaged with the limiting structure 521, the first locking platform 53211 is embedded in the low contact surface 5212 and abuts against the first transition surface 5213, and the second locking platform 53212 is embedded in the low contact surface 5212 and abuts against the second transition surface 5214. The advantage of this arrangement is that by embedding two locking platforms 5321 together into the low contact surface 5212, stability is enhanced. At the same time, the first locking platform 53211 partially abuts against the first transition surface 5213, and the second locking platform 53212 partially abuts against the second transition surface 5214. This arrangement increases the interaction (contact) with the limiting structure 521, further enhancing stability. In summary, this arrangement has good stability. Understandably, after adjustment, the chairs at the table are often used at a specific height on a tabletop of a predetermined thickness. Therefore, it is necessary to ensure that the height adjustment mechanism 5 forms a stable connection at a specific height.

[0039] In some embodiments of this utility model, the lifting member 51 is sleeved on the limiting member 52, and the lifting member 51 and the limiting member 52 are slidably connected. The sliding connection is more in line with the intuitive operation of infant and child products. In addition, the lifting member 51 includes a window 512, and the locking member 53 can extend into the window 512 and thus be embedded in the limiting structure 521. After the lifting member 51 moves up and down along the limiting member 52, the locking member 53 is embedded in the limiting structure 521 through the window 512 to form a limit, thereby fixing the lifting member 51.

[0040] Specifically, in order to limit the sliding range of the lifting member 51, the limiting member 52 is provided with a sliding groove 522, and the lifting member 51 is fitted with a sliding block 511 in the sliding groove 522. The lifting member 51 is restricted to move within the range of the sliding groove 522 by the sliding block 511. The specific shape of the sliding block 511 is not limited and can refer to conventional geometric shapes, such as cubes, cones, etc. The optimized structure of the sliding block 511 will be described later. Please refer to the following content.

[0041] More specifically, a preferred embodiment of the optimized structure of the sliding block 511 is proposed herein. The sliding block 511 includes a first working surface 5111 and a second working surface 5112 for abutting the sliding groove 522. The first working surface 5111 is parallel to the sliding groove 522, and the second working surface 5112 is a curved surface, typically an arc surface. The curved surface (especially the arc surface) enables the sliding block 511 to move more smoothly in the sliding groove 522, reduces frictional resistance, helps to reduce wear and extend service life.

[0042] In some embodiments of this utility model, corresponding to the case described above where the locking member 53 is set with rotational action as the logic, as a preferred embodiment, the locking member 53 has a rotation hole 533 on its side. The rotation hole 533 is connected to the lifting member 51 through a rotation shaft. The locking member 53 is configured such that after an external force is applied to the operating part 531, the locking part 532 swings away from the limiting structure 521 with the rotation hole 533 as the rotation center, thereby releasing the limiting effect between the lifting member 51 and the limiting member 52. The rotational action design has significant advantages. When it is necessary to adjust the height of the lifting member 51, the operating part 531 is acted upon by an external force (usually the pressure of the user's finger pressing), thereby raising the locking part 532. After the external force is applied, the locking part 532 will automatically abut against the limiting structure 521 due to gravity. In addition, in the case of the guide rail and elastic member described above, it is inevitable to overcome some force to activate the locking member 53 during use. However, in the form of rotational connection, only a small force is needed to activate the locking member 53.

[0043] Specifically, the lifting member 51 is provided with a baffle 513 in the part corresponding to the operating part 531. The baffle 513 is used to prevent the operating part 531 from rotating excessively after being subjected to external force, and to limit the operation part 531.

[0044] Specifically, the operating section 531 is designed as a downwardly recessed elliptical structure, which makes it more comfortable for the user to press with their fingers and optimizes the user experience.

[0045] In some embodiments of this utility model, in order to achieve a stable fixed relationship after the height adjustment mechanism 5 is adjusted to a specific height, two locking members 53 are provided. Based on the extension direction of the first support rod 1 and the second support rod 3, the two locking members 53 are set on the front and back of the lifting member 51. The two locking members 53 set on opposite sides are not just a matter of quantity, but can form a balancing effect on both sides. The two locking members 53 as a whole form a relatively firm locking relationship for the lifting member 51. At the same time, the setting based on the extension direction of the first support rod 1 and the second support rod 3 is more ergonomic. When operating the locking member 53, you can hold the lifting member 51 and use your index finger and thumb to press and unlock the locking member 53. Also, preferably, the height of the locking member 53 on the front is set lower than that of the locking member 53 on the back. It can be understood that when the thumb is lifted to perform the pressing action, the thumb itself will be higher than the index finger. Setting the locking member 53 on the back higher will further enhance the ergonomic conformity and optimize the user's operating experience.

[0046] The following content serves as an explanation of the working principle of this utility model:

[0047] It is worth noting beforehand that the upper clamping structure 41 and the lower clamping structure 42 mainly clamp the tabletop through mutually contacting clamps. Please refer to the attached document. Figure 1 Appendix Figure 2 and appendix Figure 12 As shown, the upper clamping structure 41 and the lower clamping structure 42 respectively include an upper clamp 411 and a lower clamp 422. The upper clamp 411 is fixedly connected to the first support rod 1 or the second support rod 3, and is also fixedly connected to the bent rod 421. The lower clamp 422 is located on the top of the lifting member 51. During the operation of this utility model, the lower clamping structure 42 moves to increase or decrease the distance between the upper clamping structure 41 and the lower clamping structure 42, thereby adapting to desktops of different thicknesses.

[0048] When the height needs to be adjusted, the user presses the operating part 531 to lift the locking part 532. At this time, the lifting part 51 is released from the lock between the lifting part 51 and the limiting part 52. Then, the user continues to operate the lifting part 51 to slide up and down along the limiting part 52. When the lifting part 51 reaches the appropriate height, the user releases the operating part 531, and the locking part 532 falls back by gravity, and the lifting part 51 returns to the limiting state.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A table-side chair, comprising a first support rod, a connecting rod, and a second support rod connected in sequence, wherein the ends of the first and second support rods are provided with fixing devices for clamping the tabletop, the fixing devices comprising an upper clamping structure and a lower clamping structure, characterized in that: The lower clamping structure includes a bent rod and a height adjustment mechanism located at the end of the bent rod. The height adjustment mechanism includes a lifting component, a limiting component, and a locking component that is movably located between the lifting component and the limiting component. The lifting component can move along the extension direction of the limiting component. The limiting component has a limiting structure on its side, which includes a high contact surface and a low contact surface. The high contact surface and the low contact surface are alternately arranged on the surface of the limiting component. The locking component is embedded in the low contact surface to form a limiting effect.

2. The table and chair as described in claim 1, characterized in that: The locking member includes an operating part and a locking part. The operating part is used to receive external force, and the locking part is used to cooperate with the limiting structure to realize or release the limiting function. The locking member is configured such that after the external force is applied to the operating part, the locking member moves, causing the locking part to disengage from the limiting structure, thereby allowing the lifting member to adjust its height relative to the limiting member.

3. The table and chair as described in claim 2, characterized in that: The locking part includes a locking plate and a recess, with the locking plate extending into the low contact surface while the recess abuts against the high contact surface.

4. The table and chair as described in claim 3, characterized in that: The limiting structure has a first transition surface perpendicular to the extension direction of the limiting member on the path from the low contact surface to the high contact surface, and a second transition surface inclined from high to low on the path from the high contact surface to the low contact surface.

5. The table and chair as described in claim 4, characterized in that: The locking platform includes a first locking platform and a second locking platform, with the recess formed between the first locking platform and the second locking platform. The locking part is configured such that, after being engaged with the limiting structure, the first locking platform is embedded in the low contact surface and abuts against the first transition surface, and the second locking platform is embedded in the low contact surface and abuts against the second transition surface.

6. The table and chair as described in claim 1, characterized in that: The lifting component is sleeved on the limiting component, and there is a sliding fit between the lifting component and the limiting component. The lifting component includes a window, and the locking component can extend into the window, thereby being embedded in the limiting structure.

7. The table and chair as described in claim 6, characterized in that: The limiting component is provided with a sliding groove, and the lifting component is provided with a sliding block in the sliding groove. The lifting component is restricted to move within the range of the sliding groove by the sliding block.

8. The table and chair as described in claim 7, characterized in that: The sliding block includes a first working surface and a second working surface for abutting the sliding groove. The first working surface is parallel to the sliding groove, and the second working surface is set as a curved surface.

9. The table and chair as described in any one of claims 1 to 8, characterized in that: The locking part has a rotating hole on its side, which is connected to the lifting part through a rotating shaft. The locking part is configured such that when an external force is applied to the operating part, the locking part swings away from the limiting structure with the rotating hole as the center of rotation, thereby releasing the limiting effect between the lifting part and the limiting part.

10. The table and chair as described in any one of claims 1 to 8, characterized in that: Two locking components are provided, with the extension directions of the first and second support rods as a reference, and the two locking components are provided on the front and back of the lifting component with reference to this reference.

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