KR-20260065229-A - Device for opening and closing armrest of vehicle

Abstract

The present invention proposes an opening and closing device for an armrest of a vehicle. The opening and closing device of the present invention includes a lower hinge assembly (10) and an upper hinge assembly (20). A hinge shaft (30) is installed in a state that passes through the shaft hole (19) of the lower hinge assembly (10) and the shaft hole (29) of the upper hinge assembly (20), and is supported so that the upper hinge assembly (20) can rotate. A friction guide (28) is supported on both sides (22B) of the upper hinge assembly (20), and the hinge shaft (30) is coupled thereto, so that a frictional force acts between it and the hinge shaft (30). A latch (14a) is supported on each side of the lower hinge assembly (20) and is supported to be in close contact with a ratchet gear (32) by a spring (17). When opening, the ratchet gear (32) can only rotate in the direction in which the upper hinge assembly (20) opens by means of the catch (14a), and when the upper hinge assembly (20) rotates in the direction in which it closes, the hinge shaft (30) rotates while having frictional force between it and the friction guide (28).

Inventors

• 박남수
• 권준형
• 노홍길

Assignees

• 카이엠 주식회사

Dates

Publication Date

20260508

Application Date

20241101

Claims (1)

1. An opening and closing device for an automobile console comprising a storage box and an armrest that opens and closes the top of the storage box; A lower hinge assembly (10) comprising a main body (12) that is fixed to a storage box and has a main body surface (12A) and two side surfaces (12B) that are bent at both ends of the main body surface (12A) and have an axial hole (19) and an assembly hole (11); An upper hinge assembly (20) connected to an armrest and rotating for opening and closing, having a main body surface (22A) and a shaft hole (29) that is bent at both ends of the main body surface (12A); A hinge shaft (30) that rotates together with a ratchet gear (32) installed on the inside and the upper hinge assembly (20), which is installed in a state penetrating the shaft hole (19) of the lower hinge assembly (10) and the shaft hole (29) of the upper hinge assembly (20) so as to allow the upper hinge assembly (20) to rotate; A friction guide (28) supported on both sides (22B) of the upper hinge assembly (20), to which the hinge shaft (30) is coupled, and to which frictional force acts between with the hinge shaft (30); It includes a latch (14a) that is supported on each side of the lower hinge assembly (20) and is supported to be in close contact with the ratchet gear (32) by a spring (17); An armrest opening and closing device for an automobile, characterized in that the ratchet gear (32) linked to the above hinge shaft (30) can only rotate in the direction in which the upper hinge assembly (20) opens by means of the latch (14a), and when the upper hinge assembly (20) rotates in the direction in which it closes, the hinge shaft (30) rotates while having frictional force between itself and the friction guide (28).

Description

Device for opening and closing armrest of vehicle The present invention relates to an armrest opening and closing device for an automobile, and more specifically, to an armrest opening and closing device configured to open more smoothly and close stably using frictional force. The car console is installed between the driver's seat and the passenger seat to store items, and consists of a storage box installed at the bottom and an armrest that opens and closes the top of the storage box. Until now, armrests have been configured so that a hinge axis maintains an open position based on frictional force with a friction guide, which means that frictional force is effectively applied during both the opening and closing processes. As such, since frictional force acts in both the opening and closing directions, the frictional force is increased to increase durability, but this may raise the disadvantage that convenience due to frictional force may be reduced during use. FIG. 1 is an overall perspective view of the opening and closing device of the present invention. FIG. 2 is an exploded perspective view of the switching device of the present invention. FIG. 3 is a side view showing the open and closed states of the opening and closing device of the present invention. FIG. 4 is a partially cutaway perspective view showing the essential parts of the present invention. FIG. 5 is an exemplary diagram showing the essential parts of the present invention according to each state. Next, we will examine the present invention in detail based on the embodiments illustrated in the drawings. In the following description, the upper hinge assembly (20), the lower hinge assembly (10), and the parts assembled thereto can be described as being composed of left-right symmetry overall; however, in the following description, the configuration of one side portion will be described as representative. As illustrated in FIG. 1, the opening and closing device of the present invention includes a lower hinge assembly (10) fixed to a console (storage box) and an upper hinge assembly (20) connected to rotate with respect to the lower hinge assembly (10) and interlocked to open and close an armrest. Next, with reference to FIG. 2, each assembly (10, 20) will be examined in detail. As illustrated in FIG. 2, the main body (12) of the lower hinge assembly (10) comprises a central main body surface (12a) and side surfaces (12b) that are bent at approximately right angles from both sides. The main body surface (12a) is a portion that is substantially fixed to a console (storage box), and the side surfaces (12b) are portions that are connected to and supported by the upper hinge assembly (20). And a pawl (14a) is installed on each side (12b) of the lower hinge assembly (10). For example, a ring-shaped pawl (14a) is supported while inserted into the pawl shaft (14b) with play. The pawl (14a) is provided with a protrusion that engages with the ratchet gear (32) described later. The pawl shaft (14b) is supported on the side (12B) with its end screwed into a nut (13) while passing through the assembly hole (11) of the side (12B). Here, a spring (torsion spring) (17) is inserted into the latch shaft (14b), and the spring (17) is engaged at both ends with the side (12B) and the latch (14b), respectively, so that the latch (14b) can receive force toward the ratchet gear (32) against the substantially fixed side wall (12B). The upper hinge assembly (20) includes an upper hinge body (22) having a main body surface (22A) and side surfaces (22B) that are extended and bent at approximately right angles from both sides of the main body surface (22A). A friction guide (28) is fixed to each of these two sides (22B) and rotates together with the upper hinge assembly (20). The friction guide (28) on the two sides (22B) of the upper hinge assembly (20) is provided with a friction portion (28) that is close to a circle and partially open. For example, it can be fixed to the two sides (22B) using a bolt (26), a nut (25), and a rivet (24). Thus, when the upper hinge assembly (20) rotates around the hinge axis (30), the friction guide (28) also rotates together. A hinge shaft (30), which will be described later, is inserted into the friction portion (28) of the friction guide (28), and a constant frictional force acts between them. The configuration and operation of the friction guide (28) and the hinge shaft (30) can be said to be conventionally used. The hinge shaft (30) passes through the shaft holes (29) formed on each side (22B) of the upper hinge assembly (20) and the shaft holes (19) formed on each side (2B) of the lower hinge assembly (10). On the outer side of the hinge shaft (30), for example, an E-ring (31) is fitted and supported, and on the inner side, a hinge nut (32) is screw-coupled and supported. Here, since the hinge shaft (30) is pressed into the shaft hole (29) of the upper hinge assembly (20), it is designed to move in conjunction with the upper hinge