Locking device for supporting legs of child dining chair

Abstract

The utility model discloses a locking device for supporting legs of a child dining chair, which comprises a foldable front supporting leg, a foldable rear supporting leg and a locking rod arranged below the chair, the locking rod is close to the front supporting leg after the front supporting leg and the rear supporting leg are opened, a locking device is arranged between each of two sides of the locking rod and each of two sides of the front supporting leg, and the locking device is used for locking the front supporting leg and the rear supporting leg. Each locking device comprises a movable buckle and a clamping column, the movable buckles are arranged on the supporting rods of the front supporting legs in a sleeving mode, and the clamping columns are arranged on the locking rods; an elastic reset structure enabling the movable buckle to always generate a downward moving trend is arranged between the movable buckle and the supporting rod, a clamping tongue is arranged on the side edge of the movable buckle, a clamping groove with a lower notch is formed in the inner side face of the head portion of the clamping tongue, and when the movable buckle resets and moves downwards, the clamping groove in the upper clamping tongue of the movable buckle is connected with the clamping column in a clamped mode to achieve locking. The locking device has the advantages of being compact in structure, easy and convenient to operate, simple and practical.

Description

Technical Field

[0001] This utility model relates to a children's dining chair, specifically a locking device for the support legs of a children's dining chair. Background Technology

[0002] In existing children's high chairs, the support legs are generally designed to be foldable for easy transportation, storage, and folding when not in use. When the support legs are extended, a locking device is installed between the support legs and the bottom of the seat to improve the stability of the support legs. This locking device includes a locking rod located at the bottom of the seat, a locking post on the side of the locking rod, and a rotating buckle on the support leg. When the support leg is extended to the correct position, the buckle is rotated to engage the locking post with the locking groove on the buckle, thereby locking the support leg. The locking device structure described above is relatively complex and cumbersome to operate, causing some inconvenience in actual use. Utility Model Content

[0003] To address the aforementioned issues, this utility model presents a locking device for the support legs of a children's dining chair, which features a compact structure, easy operation, and simple practicality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A locking device for a child high chair support leg includes a foldable front support leg, a rear support leg, and a locking rod disposed under the seat. The locking rod is positioned close to the front support leg when the front and rear support legs are open. A locking device is provided between each side of the locking rod and each side of the front support leg. The locking device comprises a movable buckle and a locking post. The movable buckle is fitted onto the support rod of the front support leg, and the locking post is disposed on the locking rod. An elastic reset structure is provided between the movable buckle and the support rod, ensuring the movable buckle always tends to move downwards. A latch is provided on the side of the movable buckle, and the inner side of the latch has a notch. When the movable buckle resets and moves downwards, the notch in the latch engages with the locking post to achieve locking.

[0006] More specifically, the aforementioned elastic reset structure includes an upper connecting rod, a reset spring, and a lower connecting rod; two guide rail grooves are symmetrically arranged on both sides of the support rod, and the upper connecting rod passes through the two guide rail grooves and is fixedly connected to the movable buckle. The entire movable buckle can slide up and down relative to the support rod along the guide rail grooves via the upper connecting rod; the lower connecting rod is located at the lower part of the support rod; the reset spring is located in the inner hole of the support rod, the upper end of the reset spring is connected to the upper connecting rod, and the lower end of the reset spring is connected to the lower connecting rod. In the initial state, the reset spring has a pre-compression amount, so that the movable buckle always has a downward tendency relative to the support rod.

[0007] More specifically, the inner rear side of the aforementioned latch is provided with several reinforcing ribs.

[0008] The locking device designed in this utility model mainly includes a movable buckle and a locking post. In use, simply pull up the movable buckle and then release it after the front and rear support legs are in place. At this time, the movable buckle will quickly slide down the support rod under the action of the return spring. This process continues until the locking groove of its upper locking tongue engages with the locking post. The whole operation is quick and convenient, and it has the characteristics of compact structure, simplicity and practicality. Attached Figure Description

[0009] Figure 1 A three-dimensional structural diagram of this utility model;

[0010] Figure 2 A partially enlarged schematic diagram of the locking post portion of the locking structure of this utility model;

[0011] Figure 3 A partially enlarged schematic diagram of the locking post portion of this utility model;

[0012] Figure 4 A schematic diagram of the connection between the movable buckle and the return spring of this utility model;

[0013] Figure 5 A partially enlarged schematic diagram of the movable buckle part of the support rod of this utility model;

[0014] Figure 6 A three-dimensional structural diagram of the movable buckle of this utility model;

[0015] Among them, 1—seat, 2—front support foot, 21—support rod, 211—guide rail groove, 3—rear support foot, 4—locking rod, 5—locking device, 51—movable buckle, 511—clamp tongue, 5111—clamp groove, 5112—reinforcing rib, 52—clamp post, 6—elastic reset structure, 61—upper connecting rod, 62—reset spring, 63—lower connecting rod. Detailed Implementation

[0016] like Figure 1-6 As shown, a locking device for the support legs of a children's dining chair includes a seat 1 and foldable front support legs 2 and rear support legs 3 disposed under the seat. The front and rear support legs can rotate relative to the hinged parts at their tops to achieve a folding operation.

[0017] A U-shaped locking rod 4 is provided under the seat 1. The locking rod 4 is set close to the front support leg 2 after the front and rear support legs are opened. A locking device 5 is provided on each side of the locking rod 4 and each side of the front support leg 2. The locking device 5 can effectively lock the front and rear support legs after they are opened, preventing them from retracting during use and providing stable support for the normal use of the children's high chair.

[0018] Each locking device 5 includes a movable latch 51 and a locking pin 52.

[0019] The movable buckle 51 is fitted onto the support rod 21 of the front support foot 2, and an elastic reset structure 6 is provided between the movable buckle 51 and the support rod 21 to make the buckle always tend to move downward.

[0020] In this embodiment, the elastic reset structure 6 includes an upper connecting rod 61, a reset spring 62, and a lower connecting rod 63. Two guide rail grooves 211 are symmetrically arranged on both sides of the support rod 21. The upper connecting rod 61 passes through the two guide rail grooves 211 and is fixedly connected to the movable buckle 51. The entire movable buckle 51 can slide up and down relative to the support rod 21 along the guide rail grooves 211 via the upper connecting rod 61. The lower connecting rod 63 is located on the support rod 21 at the lower part relative to the guide rail grooves 211. The reset spring 62 is located in the inner hole of the support rod 21. The upper end of the reset spring 62 is connected to the upper connecting rod 61, and the lower end of the reset spring 62 is connected to the lower connecting rod 63. In the initial state, the reset spring 62 has a pre-compression amount, causing the movable buckle 51 to always tend to move downwards relative to the support rod 21.

[0021] The movable buckle 51 has a latch 511 on its side. The inner side of the head of the latch 511 has a groove 5111 with a lower notch. When the movable buckle 51 is reset and moved down, the groove 5111 engages with the locking post 52 on the locking rod to achieve a locking effect.

[0022] In summary, the locking device 5 designed in this utility model mainly includes a movable buckle 51 and a locking post 52. In use, first pull up the movable buckle 51 so that the position of the latch 511 on it is higher than the position of the locking post 52. Then, after the front and rear support legs are opened to the correct positions, release the movable buckle 51. At this time, the movable buckle 51 will quickly slide down the support rod 21 under the action of the return spring 62 until the slot 5111 of the latch 511 on the movable buckle 51 engages with the locking post 52, thus realizing the locking operation. The whole operation process is quick and convenient, and has the characteristics of compact structure, simplicity and practicality.

[0023] Here, considering the connection strength of the latch 511, a number of reinforcing ribs 5112 are provided on the rear side of the inner side of the latch 511.

[0024] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A locking device for the support legs of a children's dining chair, comprising a foldable front support leg (2), a rear support leg (3), and a locking rod (4) disposed under the seat (1), wherein the locking rod (4) is close to the front support leg (2) after the front and rear support legs are opened, and a locking device (5) is provided between each side of the locking rod (4) and each side of the front support leg (2), characterized in that: Each locking device (5) includes a movable buckle (51) and a locking post (52). The movable buckle (51) is fitted onto the support rod (21) of the front support foot (2), and the locking post (52) is set on the locking rod (4). An elastic reset structure (6) is provided between the movable buckle (51) and the support rod (21) to make the movable buckle (51) always have a downward tendency. The side of the movable buckle (51) is provided with a latch (511), and the inner side of the head of the latch (511) is provided with a groove (5111) with a lower notch. When the movable buckle (51) resets and moves downward, the groove (5111) in its upper latch (511) engages with the locking post (52) to achieve locking.

2. The locking device for the support leg of a children's high chair as described in claim 1, characterized in that: The elastic reset structure (6) includes an upper connecting rod (61), a reset spring (62), and a lower connecting rod (63). Two guide rail grooves (211) are symmetrically provided on both sides of the support rod (21). The upper connecting rod (61) passes through the two guide rail grooves (211) and is fixedly connected to the movable buckle (51). The entire movable buckle (51) can slide up and down relative to the support rod (21) along the guide rail grooves (211) via the upper connecting rod (61). The lower connecting rod (63) is located at the lower part of the support rod (21). The reset spring (62) is located in the inner hole of the support rod (21). The upper end of the reset spring (62) is connected to the upper connecting rod (61), and the lower end of the reset spring (62) is connected to the lower connecting rod (63). In the initial state, the reset spring (62) has a pre-compression amount, so that the movable buckle (51) always has a downward tendency relative to the support rod (21).

3. A locking device for the support leg of a children's high chair as described in claim 1 or 2, characterized in that: The inner side of the latch (511) is provided with several reinforcing ribs (5112).

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