A seat with a pedal height adjustment mechanism

Abstract

The utility model discloses a seat convenient to adjust the height of footboard, technical scheme includes support frame, use department and footboard. The support frame is equipped with adjusting mechanism on the support rod, and the cooperation of the mechanism through the cooperation of the first locking piece and the slot makes the footboard be clamped in the support rod of different height. The utility model discloses through the innovative clamping type adjustment, replaces the traditional screw rod locking mode, and user can adjust and lock the footboard height with bare hands quickly without tools. Further, the seat is also equipped with the folding mechanism of one -key operation and the use department of the use scene of switchable. The utility model integrates height adjustment, quick folding and function conversion, solves the technical defects of the prior art of complicated operation, tool dependence, folding inconvenience and single function, and has the beneficial effects of height adjustment simplicity and use convenience.

Description

Technical Field

[0001] This utility model relates to the field of infant and child product technology, and in particular to a seat that is easy to adjust the height of the foot pedal. Background Technology

[0002] In products such as children's high chairs, recliners, and lounge chairs, the footrests are typically designed to be height-adjustable to accommodate a child's growth. Currently, a widely used adjustment method on the market is to use a screw to control the width of the footrest and fix it in place. Specifically, this structure usually has continuous adjustment zones on the support rod and is secured by a screw that runs through the footrest connector. When the height needs to be adjusted, the user must use a special hex wrench or similar tool to completely loosen the screw to release sufficient clamping force before moving the footrest to the new position, and finally tighten the screw again using the tool. The entire adjustment process is not only cumbersome but also heavily reliant on external tools. If a matching wrench is not readily available, the adjustment cannot be performed, causing great inconvenience to the user.

[0003] While this screw adjustment method provides reliable fixation, its user experience is far from satisfactory. For families who need to adjust frequently to match their child's rapid growth, each adjustment requires finding tools and performing the tightening and loosening operation, undoubtedly increasing the burden of use and making what should be a convenient function extremely time-consuming and laborious.

[0004] Furthermore, to enhance product portability and functionality, existing technologies also include folding functions for seats and the ability to switch between different usage modes such as dining chairs and recliners. However, common folding mechanisms are often complex in structure and not intuitive to operate, with risks of poor folding or insecure locking. Moreover, the methods for switching functions often involve replacing the entire seat, which is cumbersome and inconvenient to store, failing to adequately meet users' combined expectations for multi-functionality and convenient operation.

[0005] Therefore, existing technologies rely on external tools for fixing and releasing, and their folding and functional conversion structures are inadequate, resulting in cumbersome adjustment processes, inability to operate quickly by hand, and poor overall ease of use. Utility Model Content

[0006] The main purpose of this utility model is to propose a seat that is easy to adjust the height of the foot pedal, in order to solve the technical problems of existing technology, which relies on external tools to fix and release, and whose folding and function conversion structures are inadequate, resulting in a cumbersome adjustment process, inability to operate quickly by hand, and poor overall ease of use.

[0007] To achieve the above objectives, this utility model proposes a seat with adjustable foot pedal height, including a support frame, a user part, and a foot pedal. The support frame includes a top frame and support rods. The user part is located on the top frame. At least two support rods have adjustment mechanisms on their surfaces for engaging the foot pedal. The adjustment mechanisms are configured to engage the foot pedal at different height positions on the support rods to achieve height adjustment of the foot pedal.

[0008] Furthermore, the adjustment mechanism includes slots, and the foot pedal is configured to adjust its height by abutting against slots at different heights.

[0009] Furthermore, the adjustment mechanism also includes a locking hole for reinforcing the engagement connection. The locking hole is located on the side of the slot, and the foot pedal is provided with a first locking member that can extend into the locking hole, thereby locking the foot pedal at a preset height.

[0010] Furthermore, the lock hole is located on the lower side of the slot.

[0011] Furthermore, the first locking element includes a first base and a first button. The first button is movably disposed on the first base, and a lock head is provided at the end of the first button facing the support rod. The lock head can extend into or retract into the lock hole as the first button moves relative to the first base.

[0012] Furthermore, the first seat has a first opening facing downwards, and the first button has a toggle part that extends out of the first opening and moves linearly within the range of the first opening.

[0013] Furthermore, the support rods are located on the front and rear sides of the top frame, wherein the top frame is hinged to the support rod located on the rear side, so that the rear support rod can be folded relative to the front support rod.

[0014] Furthermore, a folding mechanism is provided between the front support rod and the rear support rod. The folding mechanism is configured to have a locked position and a free position, thereby preventing or allowing the rear support rod to fold relative to the front support rod.

[0015] Furthermore, the folding mechanism includes a folding plate, a linkage, a first rotating rod, and a second rotating rod. The first rotating rod is connected between two support rods on the front side, and the second rotating rod is connected between two support rods on the rear side. The linkage is hinged relative to the folding plate and the first rotating rod. The folding plate is provided with a rotating part, and the folding plate is rotatably connected to the second rotating rod through the rotating part. The folding mechanism is also provided with a second locking component for locking the first rotating rod relative to the folding plate.

[0016] Furthermore, the connection between the user section and the top frame is defined as detachable.

[0017] This utility model includes a support frame, a user section, and a foot pedal. The support frame has an adjustment mechanism on its support rod. This mechanism, through the cooperation of a slot and a first locking element, allows the foot pedal to engage at different heights with the support rod. This utility model, through its innovative engaging adjustment, replaces the traditional screw locking method, allowing users to quickly adjust and lock the foot pedal height by hand without tools. Furthermore, the seat also features a one-button folding mechanism and a user section that can switch between usage scenarios. This utility model integrates height adjustment, quick folding, and function conversion, solving the technical defects of existing technologies such as cumbersome operation, reliance on tools, inconvenient folding, and limited functionality. It offers the advantages of simple height adjustment and convenient use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention in its unfolded state;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention in its unfolded state from another perspective;

[0020] Figure 3 An exploded view of the three-dimensional structure of the foot pedal, support rod, and first locking element;

[0021] Figure 4 This is a three-dimensional structural diagram of the first locking element;

[0022] Figure 5 A three-dimensional structural diagram of the first locking element from another perspective;

[0023] Figure 6 This is a three-dimensional structural diagram of the present invention in its folded state;

[0024] Figure 7 Schematic diagram of the three-dimensional structure of the folding mechanism Figure 1 ;

[0025] Figure 8 Schematic diagram of the three-dimensional structure of the folding mechanism Figure 2 ;

[0026] Figure 9 This is a three-dimensional structural diagram of the second locking component;

[0027] Figure 10 An exploded view of the three-dimensional structure of the second locking component;

[0028] Figure 11 This is a schematic diagram showing the fit between the fastener and the pusher.

[0029] Figure 12 A sectional view of the fastener and pusher at section line AA;

[0030] Figure 13This is a three-dimensional structural diagram of the standing chair of this utility model;

[0031] Figure 14 This is a schematic diagram showing the fit between the top frame groove and the foot pedal;

[0032] Figure 15 These are schematic diagrams of some other embodiments of the user unit.

[0033] The above figures include the following reference numerals:

[0034] 1. Seat; 2. Support frame; 21. Top frame; 211. Slot; 211a. First fitting part; 211b. Second fitting part; 22. Support rod; 3. User part; 4. Foot pedal; 5. Adjustment mechanism; 51. Slot; 52. Lock hole; 6. First locking member; 61. First seat; 611. First opening; 62. First button; 621. Lock head; 622. Actuating part; 7. Folding mechanism; 71. Folding plate; 711. Rotating part; 72. Linking member; 73. First rotating rod; 74. Second rotating rod; 8. Second locking assembly; 81. Second seat; 811. Engaging groove; 812. Second opening; 82. Second button; 83. Buckle; 84. Pushing member; 841. Actuating part; 842. Receiving chamber; 8421. Linear groove. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] This utility model proposes a seat 1 that facilitates the adjustment of the foot pedal height.

[0039] In this embodiment of the utility model, such as Figures 1 to 15 As shown, the seat 1 includes a support frame 2, a user part 3, and a foot pedal 4. The support frame 2 includes a top frame 21 and support rods 22. The user part 3 is located on the top frame 21. At least two support rods 22 have adjustment mechanisms 5 for engaging the foot pedal 4. The adjustment mechanisms 5 are configured to engage the foot pedal 4 at different height positions on the support rods 22 to achieve height adjustment of the foot pedal 4. This invention, through the above technical solution, produces significant technical advantages compared to existing adjustment methods that rely on screw tools. The core advantage lies in the innovative engaging adjustment mechanism 5, which simplifies the traditional multi-step operation assisted by tools into a one-step manual engaging action. Users can complete the height adjustment and secure locking of the foot pedal 4 without finding or using external tools, simplifying the operation process and improving ease of use and user experience.

[0040] In some embodiments of this invention, the adjustment mechanism 5 includes a slot 51, and the foot pedal 4 is configured to adjust its height by abutting against the slots 51 at different heights. In this embodiment, the invention provides multiple clear and discrete adjustment levels for the foot pedal 4 through the simple mechanical structure of the slot 51. Compared to stepless adjustment, the slot 51 design provides clear positioning and operational feedback for each height change, effectively preventing ambiguity and uncertainty during adjustment and improving operational accuracy. Simultaneously, this structure fully utilizes the mechanical properties of the support rod 22 itself, allowing the load of the foot pedal 4 to be directly and efficiently transferred to the support frame 2 through the slot 51, ensuring its stability under load and avoiding the risk of slippage or loosening. In summary, this slot 51 embodiment achieves rapid positioning and stable support under manual adjustment in a simple and reliable manner.

[0041] Specifically, the adjustment mechanism 5 also includes a locking hole 52 for reinforcing the locking connection. The locking hole 52 is located on the side of the slot 51, and the foot pedal 4 is provided with a first locking member 6 that can extend into the locking hole 52, thereby locking the foot pedal 4 at a preset height. Unlike using the slot 51 alone, this invention ensures stable and reliable support for the foot pedal 4 at any height through the mechanical interlocking structure of the slot 51 and the locking hole 52, avoiding the risk of accidental slippage caused by insufficient friction in the stepless adjustment mechanism 5, thus providing superior safety and stability.

[0042] More specifically, the locking hole 52 is preferably located on the lower side of the slot 51. Understandably, the location of the locking hole 52 on the lower side of the slot 51 aligns with the natural movement direction of the first locking member 6 under gravity or the force of the return spring, allowing the first locking member 6 to slide into or engage with the locking hole 52 more smoothly and effortlessly when the foot pedal 4 is inserted into the slot 51, simplifying the locking operation. Secondly, after locking, the downward pressure from the foot pedal 4 acts directly on the upper edge of the locking hole 52. By placing the locking hole 52 on the lower side, the first locking member 6 primarily bears shear force rather than pull-out force, greatly enhancing the impact resistance and stability of the locking mechanism and effectively preventing the foot pedal 4 from accidentally dislodging under pressure. Furthermore, providing only one locking hole 52 at this location can also maximize the structural integrity and strength of the support rod 22, eliminating the need for an additional locking hole 52.

[0043] It should be noted that the slot 51 and the locking hole 52 can be freely used to form the adjustment mechanism 5, for example, the slot 51 can be used alone or the locking hole 52 can be used alone. Of course, when the slot 51 and the locking hole 52 are used together, the engagement effect of the foot pedal 4 is better. In addition, the number of foot pedals 4 and the corresponding adjustment mechanisms 5 is not limited, and can be arranged appropriately according to the overall height of the support frame 2. Figures 1 to 3 In one example embodiment, the upper foot pedal 4 uses a combination of a slot 51 and a lock hole 52, while the lower foot pedal 4 only uses a slot 51.

[0044] Specifically, the first locking element 6 includes a first base 61 and a first button 62. The first button 62 is movably mounted on the first base 61, and a lock head 621 is provided at the end of the first button 62 facing the support rod 22. The lock head 621 can extend into or retract into the keyhole 52 as the first button 62 moves relative to the first base 61. This structure decomposes the locking action into an independent, ergonomic operating unit. By pressing the first button 62 in a straightforward one-way operation, the engagement and disengagement of the lock head 621 and the keyhole 52 can be precisely controlled, realizing a one-button unlocking function. The operation logic is clear and extremely simple.

[0045] More specifically, the first seat 61 has a downward-facing first opening 611, and the first button 62 has a toggle part 622. The toggle part 622 extends from the first opening 611 and moves linearly within the range of the first opening 611. Understandably, the downward-facing arrangement of the first opening 611 utilizes gravity to prevent the accumulation of dust, liquids, and other impurities inside the first opening 611, effectively reducing the risk of the mechanism jamming due to contamination and improving the product's environmental adaptability and durability. Simultaneously, the linear movement path of the toggle part 622, facing downwards towards the user, closely matches the natural pushing and pulling motion of the user's fingers (especially the thumb), providing an intuitive and ergonomic operating experience.

[0046] In some embodiments of this utility model, the support rod 22 is provided on the front and rear sides of the top frame 21, wherein the top frame 21 is hinged to the support rod 22 located on the rear side, so that the rear support rod 22 can be folded relative to the front support rod 22. Specifically, a folding mechanism 7 is provided between the front support rod 22 and the rear support rod 22. The folding mechanism 7 is configured to have a locked position and a free position, thereby preventing or allowing the rear support rod 22 to be folded relative to the front support rod 22.

[0047] Furthermore, the folding mechanism 7 has multiple embodiments, such as a slider locking mechanism and an eccentric wheel locking mechanism. The slider locking mechanism mainly involves a slidable locking slider on the support rod 22, which engages with different locking holes 52 to achieve unfolding locking and folding release. The eccentric wheel locking mechanism, by rotating an eccentric wheel, uses its cam surface to press or release the connecting parts, thereby achieving locking and releasing of the mechanism. The slider locking mechanism and the eccentric wheel locking mechanism are prior art and will not be described in detail here.

[0048] Specifically, the folding mechanism 7 preferably adopts a linkage operation scheme. The folding mechanism 7 includes a folding plate 71, a linkage 72, a first rotating rod 73, and a second rotating rod 74. The first rotating rod 73 is connected between the two support rods 22 on the front side, and the second rotating rod 74 is connected between the two support rods 22 on the rear side. The linkage 72 is hinged relative to the folding plate 71 and the first rotating rod 73. The folding plate 71 is provided with a rotating part 711, and the folding plate 71 is rotatably connected to the second rotating rod 74 through the rotating part 711. The folding mechanism 7 is also provided with a second locking component 8 for locking the first rotating rod 73 relative to the folding plate 71. This preferred solution uses the folding plate 71, the linkage 72, the first rotating rod 73, and the second rotating rod 74 to form a stable and reliable linkage quadrilateral structure. When the second locking component 8 is operated to release the constraint on the first rotating rod 73, the user applies a folding force to synchronously drive the rear support rod 22 to move closer to the front support rod 22, thereby realizing the smooth and stable folding of the seat 1 as a whole, avoiding the jamming phenomenon that may occur in the prior art.

[0049] It should be explained that the rotation of the aforementioned first rotating rod 73 and second rotating rod 74 occurs in different ways: the rotation point corresponding to the first rotating rod 73 is the linkage 72, which is a rotating structure with its two ends hinged to the folding plate 71 and the first rotating rod 73 respectively; while the rotation point corresponding to the second rotating rod 74 is the rotating part 711, which is a rotating groove, and the second rotating rod 74 rotates within the range of the rotating part 711. Furthermore, the portion or component of the folding plate 71 is preferably integrally formed, as integral forming has the beneficial effect of strong stability.

[0050] Specifically, the second locking assembly 8 includes a second seat 81, a second button 82, a latching member 83, and a pushing member 84. The second seat 81 includes an engagement groove 811 for engaging the first rotating rod 73, with a second opening 812 defined in the middle of the engagement groove 811. The pushing member 84 includes an actuating part 841 that can extend or retract from the second opening 812 and a receiving chamber 842. The receiving chamber 842 is provided with a linear groove 8421. The latching member 83 is movably disposed in the receiving chamber 842 and can slide within the range of the linear groove 8421, thus having a first position for engaging the pushing member 84 and a second position for unlocking the pushing member 84. At the same time, the receiving chamber 842 is provided with an elastic member for resetting the latching member 83, and the latching member 83 abuts against the elastic member. The second button 82 is configured such that, upon pressing, it drives the latching member 83 to extend along the linear groove 8421 into the receiving chamber 842, thereby unlocking the pushing member 84; after pressing, the latching member 83 returns to its original position via the elastic element. Understandably, the core of this part lies in the mechanical interlock formed by the latching member 83 and the pushing member 84, providing primary rigidity for the seat 1 in the unfolded state, effectively resisting impacts and shaking during use. Simultaneously, a single press by the user can drive the latching member 83 to release the restriction on the pushing member 84 via the second button 82, thereby releasing the entire folding mechanism 7 and achieving the convenience of one-button unlocking. The built-in elastic element ensures that the latching member 83 automatically and accurately returns to its standby position after operation, preparing for the next locking. In some other embodiments of this utility model, the elastic element can also be replaced by components made of commonly used elastic materials such as rubber and elastic fibers, replacing the spring described in the aforementioned preferred embodiment. Details of the elastic element can be found in the prior art and will not be elaborated here.

[0051] In some embodiments of this invention, the user part 3 and the top frame 21 are detachably connected. In this invention, the purpose and function of the entire invention can be changed by individually switching the user part 3; for example, the user part 3 can be a dining chair or a recliner. An example of a dining chair is... Figure 1 and Figure 2 As shown, the recliner is shown in the image. Figure 15The content shown. Furthermore, the aforementioned folding plate 71, besides facilitating the integration of the components of the folding mechanism 7, also functions as a standing chair. In other embodiments of this utility model, such as... Figure 13 As shown, relative to Figure 1 and Figure 2 The dining chair shown in this embodiment uses part 3 as an armrest, and the use part 3 and the folding plate 71 together form a standing chair. Preferably, the top frame 21 is provided with a groove 211, which includes a first fitting part 211a and a second fitting part 211b. The first fitting part 211a is vertically embedded in the foot pedal 4, while the second fitting part 211b is inserted by a first locking member 6 to achieve locking. Thus, the foot pedal 4 forms a backrest structure in the form of a standing chair.

[0052] The following content serves as an explanation of the working principle of this utility model:

[0053] When the height of the foot pedal 4 needs to be adjusted, the user presses the first button 62 of the first locking member 6 with their bare hand, driving the lock head 621 to retract from the current lock hole 52, releasing the lock with the support rod 22. Then, while keeping the button pressed, the foot pedal 4 is moved up or down along the support rod 22 until the first seat 61 of the first locking member 6 aligns with the target height slot 51. At this point, the first button 62 is released, and the lock head 621 automatically springs into the corresponding lock hole 52 under the action of the internal reset mechanism (such as a spring), completing the mechanical interlock and thus achieving a quick and reliable switching of the foot pedal 4 height. The entire process requires no tools and can be completed in one step with just one hand.

[0054] 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 seat with adjustable footrest height, comprising a support frame, a user portion, and a footrest, wherein the support frame includes a top frame and a support rod, and the user portion is disposed on the top frame, characterized in that: At least two support rods have adjustment mechanisms on their surfaces for engaging the foot pedals. These mechanisms are configured to engage the foot pedals at different height positions on the support rods to achieve height adjustment of the foot pedals.

2. The seat as described in claim 1, characterized in that: The adjustment mechanism includes slots, and the foot pedal is configured to adjust its height by abutting against slots at different heights.

3. The seat as described in claim 2, characterized in that: The adjustment mechanism also includes a locking hole for reinforcing the engagement connection. The locking hole is located on the side of the slot, and the foot pedal is provided with a first locking member that can extend into the locking hole, thereby locking the foot pedal at a preset height.

4. The seat as described in claim 3, characterized in that: The keyhole is located on the lower side of the slot.

5. The seat as described in claim 3, characterized in that: The first locking element includes a first base and a first button. The first button is movably disposed on the first base. The end of the first button facing the support rod is provided with a lock head, and the lock head can extend into or retract into the lock hole as the first button moves relative to the first base.

6. The seat as described in claim 5, characterized in that: The first seat has a first opening facing downwards, and the first button has a toggle part that extends out of the first opening and moves linearly within the range of the first opening.

7. The seat as described in claim 1, characterized in that: The support rods are located on the front and rear sides of the top frame. The top frame is hinged to the support rod located on the rear side, so that the rear support rod can be folded relative to the front support rod.

8. The seat as described in claim 7, characterized in that: A folding mechanism is provided between the front support rod and the rear support rod. The folding mechanism is configured to have a locked position and a free position, thereby preventing or allowing the rear support rod to fold relative to the front support rod.

9. The seat as described in claim 8, characterized in that: The folding mechanism includes a folding plate, a linkage, a first rotating rod, and a second rotating rod. The first rotating rod is connected between two support rods on the front side, and the second rotating rod is connected between two support rods on the rear side. The linkage is hinged relative to the folding plate and the first rotating rod. The folding plate is provided with a rotating part, and the folding plate is rotatably connected to the second rotating rod through the rotating part. The folding mechanism is also provided with a second locking component for locking the first rotating rod relative to the folding plate.

10. The seat as claimed in claim 1, characterized in that: The connection between the user section and the top frame is limited to a detachable connection.

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