KR100392080B1 - Opening/closing support of cover member - Google Patents

Abstract

(Problem) In the opening / closing support mechanism of the two-axis pivoting cover body, the grease is abolished by reducing the frictional resistance during the opening / closing operation of the cover body so that smooth opening and closing operation can be performed without using a lubricant such as grease. It aims to make it possible to do it.

(Measures) The friction coefficient between the inner surface of the guide hole 12 and the second slide shaft 32 is µ, and the line D and the pivot shaft 11 connecting the pivot shaft 11 and the first slide shaft 31 are formed. When the angle formed by the line C connecting the second slide shaft 32 and the angle C is α, the rotation shaft 11 and the first slide shaft 31 are satisfied to satisfy an expression such that α ≧ 2 μtan ⁻¹ . And a second slide shaft 32.

Description

Opening / closing support of cover member}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing support mechanism for a lid, which is suitably used as a mechanism for opening and closing a lid for covering an opening of a container for a vehicle interior, such as a cup holder and a small box.

Conventionally, a container such as a cup holder, a small box, or the like is set in a center console of an automobile, and a cover body for opening and closing the opening is provided in such a container.

As the cover body provided in such a container, one end portion thereof is rotatably attached to one end portion of the container body and is opened and closed in a flap form. Therefore, the rotational track of the tip portion of the cover body accompanying the opening and closing of the cover body It is necessary to secure the space on the upper side of the container body as much as the part corresponding to, and to secure the space for the lid body on one end side of the container body when the lid is fully open to the container body. . Therefore, in the conventional container having a lid, it is not easy to secure an installation place in an automobile with limited space.

Then, in order to solve the said problem, the opening / closing support mechanism of the cover body shown to FIGS. 1-3 is proposed (Japanese Unexamined-Japanese-Patent No. 8-156698). As shown in FIGS. 1 and 2, the opening and closing support mechanism of the lid body axially supports the rotating member 2 on the rotating shaft 11 protruding from the outer surface of the container body 1, and the rotating member ( A guide hole 12 formed in an arc shape and a branch hole 13 branching outward from the guide hole 12 are formed on the side surface of the container body 1 along the rotational movement trajectory of 2). 3) the first slide shaft 31 formed on both sides of the container (only one side in the figure) is axially supported by the pivot member 2 through the guide hole 12 of the container body 1, The second slide shaft 32, which is provided in parallel with the first slide shaft 31 on both sides of the lid 3, is formed in the pivot member 2 through the guide hole 12 of the container body 1. It is inserted into the notch groove (21). In addition, the lid 3 is attached to the torsion spring s attached between the projection 14 formed between the guide hole 12 and the pivot shaft 11 and the second slide shaft 32. It is in a hardened state.

The opening and closing operation of the lid 3 by the opening and closing support mechanism of the lid is as shown in FIG.

In the closed state in which the opening of the container body 1 is closed by the lid 3, as shown in FIG. 3A, the first slide shaft 31 is formed of the guide hole 12. The second slide shaft 32 is located at one end (upper left side in the drawing), and the second slide shaft 32 is located at the tip of the branch hole 13. In this state, the torsion spring s (Figs. 4, the lid 3 is held in the closing direction, thereby maintaining the closed state.

When the lid 3 is rotated in the open direction (upper right in Fig. 3) while resisting the holding force of the torsion spring s in the closed state, as shown in Fig. 3B, First, the lid 3 is rotated by a predetermined angle about the first slide shaft 31 so that the second slide shaft 32 moves from the distal end of the branch hole 13 to the guide hole 12. Subsequently, as shown in (C) of FIG. 3, the other end side (lower right in the drawing) of the first slide shaft 31 and the second slide shaft 32 along the guide hole 12. And the cover member 3 rotates in the open direction about the pivot shaft 11 by rotating the pivot member 2 about the pivot shaft 11 together with them. As shown in (D), the second slide shaft 32 has the guide hole 12. The opening of the container body 1 is opened by the end of the slide movement (end of rotation of the lid body) in contact with the other end of the lid. In this case, in the operation from (B) to (D) in Fig. 3, since the holding force of the torsion spring s acts as the side which rotates the lid 3 in the opening direction, As a result, the lid is automatically rotated, and as shown in FIG. 3D, the expanded state in which the opening of the container body 1 is completely opened is maintained.

In the case where the lid 3 is closed in the open state of FIG. 3D, the torsion spring in the closed state is moved in the closed direction (upper left in the drawing). When rotating while resisting the holding force of (s), as shown in FIG.3 (C), the said 1st slide shaft 31 and the said 2nd slide shaft 32 follow the said guide hole 12 first. The cover member 3 rotates about a predetermined angle about the rotation shaft 11 by moving the rotation member 2 about the rotation shaft 11 with the rotational member 2 at the same time. As shown in 3B, when the first slide shaft 31 reaches one end of the guide hole 12, as shown in FIG. 3A, the second slide shaft 32 is The guide hole 12 enters the branch hole 13, moves to the tip side of the branch hole 13, and covers it. Element 3 is the opening of the container body 1 is closed by pivoting with respect to the first slide shaft 31. In this case, in the operation from (B) to (A) in Fig. 3, since the holding force of the torsion spring s acts as the side which rotates the lid 3 in the closing direction, this holding force is The cover body is automatically rotated by and the closed state is maintained as shown in Fig. 3A.

In this way, the opening / closing support mechanism of the lid body uses the two shafts, that is, the first slide shaft 31 and the pivot shaft 11, as the pivot shaft for rotating the lid body 3. It is designed to make it easy to secure the installation place of the container inside the car by making the space necessary for opening and closing of (3) small.

However, in the opening and closing support mechanism of the lid, a large frictional force is generated between the inner surface of the guide hole 12 and the second slide shaft 32 during the opening and closing operation of the lid 3. That is, when opening the cover body 3, as shown in FIG. 4, the reaction of the force F1 in the opening direction applied to the cover body 3 is made centering around the 1st slide shaft 31, and is made. By acting to rotate the slide shaft 32 in the direction A1 in the drawing, the second slide shaft 32 is pressed against the lower inner circumferential surface of the guide hole 12 to slide the inside of the guide hole 12. On the other hand, when closing the lid 3, the reaction of the force F2 in the closing direction applied to the lid 3 causes the second slide 32 to be centered around the first slide 31. By acting to rotate in the direction B1 in the figure, the second slide shaft 32 is slid in the guide hole 12 while being pressed against the upper inner peripheral surface of the guide hole 12. Therefore, during the opening and closing operation of the lid 3, a large operating load is applied to the lid 3 so that a tight feeling or roughness is felt when the lid 3 is rotated by hand, or the torsion spring ( Smooth operation may not be obtained at the time of rotation by the finger of s).

Therefore, in the above opening and closing support mechanism, it is necessary to apply lubricating grease to the inner circumferential surface of the second slide shaft 32 or the guide hole 12 to reduce the frictional resistance between the two. The assembly work of the lid 3 is complicated, and the manufacturing cost is increased. In addition, the grease may be dirty from the surroundings.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in the opening and closing support mechanism of the two-axis pivotal cover body, smooth opening and closing operation is performed without using a lubricant such as grease by reducing frictional resistance during opening and closing operation of the cover body. The object of this invention is to make it possible to abolish grease.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows an example of the container using the opening-and-closing support mechanism of a biaxial pivoting cover body.

Fig. 2 is a partially enlarged view showing the opening and closing support mechanism portion of the biaxial pivotal lid in the container.

3 is an explanatory diagram for sequentially explaining the operation of the opening and closing support mechanism.

4 is an explanatory diagram illustrating the dynamic relationship between the opening and closing support mechanism and the setting conditions of the present invention;

5 is a graph showing the experimental results according to the embodiment

Explanation of symbols on the main parts of the drawings

1-container body (opening and closing body) 11-rotating shaft

12-guide hole 13-branch hole

14-protrusion 2-rotating member

21-Notch 3-Cover

31-1st slide axis 32-2nd slide axis

s-torsion spring

MEANS TO SOLVE THE PROBLEM In order to achieve the said objective, the present inventors dynamically considered the operation | movement at the time of opening and closing of the cover body by the opening-and-closing support mechanism of the said 2-axis pivotal cover body, The said rotating shaft 11 and the 1st slide shaft By optimizing the arrangement relationship between the 31 and the second slide shaft 32, the frictional resistance between the inner surface of the guide hole 12 and the second slide shaft 32 during the opening and closing operation of the lid can be effectively reduced. It has been found that this setting can achieve a smooth opening and closing operation without using a lubricant such as grease.

That is, in FIG. 4, when the load F2 for rotating the lid 3 in the closing direction is input, the first slide shaft 31 is loaded in the direction A2 in the drawing, and the second slide shaft ( 32), the load is applied in the direction B1 in the drawing. At this time, the friction coefficient μ between the inner surface of the guide hole 12 and the second slide shaft 32 is determined by the formula of the friction angle.

μ = tan θ

{In this case, θ is a straight line (C) connecting the rotating shaft 11 and the second slide shaft (32)

Is the angle formed by the load direction B1}

Where θ is

θ = μtan ^-1

It can be represented as. At this time, an angle α formed by a straight line D connecting the rotational shaft 11 and the first slide shaft 31 and a straight line C connecting the rotational shaft 11 and the second slide shaft 32. More than twice the θ, i.e.

α≥2 μtan ^-1

By setting the rotation shaft 11, the first slide shaft 31 and the second slide shaft 32 so as to satisfy the cover body 3 is smoothly rotated without giving a tight or rough feeling, It has been found that even when the lid 3 is rotated by a gripping means such as a torsion spring, the use of grease can be abolished by operating very smoothly.

For example, when the second slide shaft 31 is made of metal, and the guide hole 12 of the container body 1 is made of acrylonitrile butadiene styrene resin (ABS resin), the friction coefficient (μ) ) Is about 0.4,

2 μtan ^-1 = 43.6

Becomes Therefore, in this case, the grease is set by setting the rotation shaft 11, the first slide shaft 31, and the second slide shaft 32 such that the angle α is 43.6 degrees or more, and in reality, 44 degrees or more. It is possible to obtain a very smooth rotational operation of the cover (3) without using. In this case, the more preferable angle α is 50 degrees.

Accordingly, the present invention provides a rotational shaft formed on an outer surface of a closed body such as a container, a rotating member axially supported by the rotating shaft and rotating along an outer surface of the closed body, and a rotational movement trajectory of the rotating member. A guide hole formed on a side surface of the closure body, a branch hole formed by branching from the guide hole, and a cover body for opening and closing the opening of the closure body, the guide hole of the closure body A first slide shaft axially supported by the pivot member and a second slide shaft formed in the cover member and inserted into the guide hole of the to-be-closed body, and an opening of the to-be-closed body to the cover body. In the closed state, the first slide shaft is positioned at one end of the guide hole, and the second slide shaft is positioned at the distal end of the branch hole. By rotating the lid in the closed direction in the closed state, the lid is first rotated by a predetermined angle about the first slide shaft so that the second slide shaft moves from the tip of the branch hole to the guide hole. Subsequently, the first slide shaft and the second slide shaft move to the other end side along the guide hole, and together with these, the rotating member rotates about the rotating shaft so that the lid body is centered on the rotating shaft. By rotating the opening of the to-be-closed body and rotating the lid in the open direction in the closing direction, first the first slide shaft and the second slide shaft are formed along the guide hole. At the same time as moving to the negative side, together with these the rotating member is centered on the rotating shaft By rotating, the cover body rotates a predetermined angle about the pivot shaft, and when the first slide shaft reaches one end of the guide hole, the second slide shaft enters the branch hole from the guide hole and the branch hole. A lid opening / closing support mechanism configured to move toward the tip end side of the lid to rotate about the first slide shaft to close the opening of the to-be-closed body, wherein the coefficient of friction between the inner surface of the guide hole and the second slide shaft is μ. When the angle formed by the line connecting the pivot shaft and the first slide shaft and the line connecting the pivot shaft and the second slide shaft is α, the pivot shaft satisfies an expression such that α ≧ 2 μtan ⁻¹ . It is desirable to provide an opening / closing support mechanism for a lid, characterized in that a first slide shaft and a second slide shaft are formed. .

In addition, although this invention can eliminate the use of grease, the use form using grease, such as grease, is not excluded from this invention, The said rotating shaft 11 and the 1st slide also when a grease, such as grease, is used. The arrangement design of the shaft 31 and the second slide shaft 32 can be optimized.

That is, for example, in the combination of the second slide shaft 32 made of metal and the guide hole 12 made of ABS resin (the base body 1 for solvent), the friction coefficient (μ ) Is 2 μtan ^-1 = 11.4, so that the angle α is 11.4 degrees or more and in reality 12 degrees or more, so that the smooth rotational motion of the lid 3 is obtained. It can be seen that the distance between the two axes of the first slide shaft 31 and the second slide shaft 32 can be set narrower, thereby increasing the degree of freedom in design. In this invention, the degree of freedom of this design can be grasped | ascertained clearly.

The material of the second slide shaft 32 and the guide hole 12 (base body 1 for the use) is not limited to the combination of the metal and the ABS resin, and the combination of metals, the combination of synthetic resins, Or a combination of different synthetic resins.

In addition, although it demonstrated so far as the opening / closing support mechanism of the cover body of containers, such as a vehicle cup holder and a small box, the opening / closing support mechanism of this invention is not limited to this, It can use for the cover body which opens and closes the opening part of various to-be-closed bodies. have.

The torsion spring s (cartage means) which holds the lid 3 may be omitted, and the shape of the container body 1 (opening and closing body), the rotating member 2, the lid 3 and the like can be omitted. In addition, the configuration is not limited to the above FIGS. 1 to 4 and may be appropriately changed within a range not departing from the gist of the present invention.

(Example)

Hereinafter, the Example of this invention is shown and the effect of this invention is shown more specifically.

The opening and closing support mechanism of the lid shown in Fig. 4 is constituted, while the relative forming positions of the first slide shaft 31 and the second slide shaft 32 are respectively changed, that is, the grease is set differently from each other. An experiment was conducted to evaluate the opening and closing operation of the lid (3) without using. The results are shown in FIG.

In addition, a metal shaft is used for the first slide shaft 31 and the second slide shaft 32, and the container body 1 (including the guide hole 12) and the lid 3 are ABS resins. Formed. Therefore, the coefficient of friction (μ) is about 0.4 and 2 μtan ^-1 is 43.6.

As shown in Fig. 5, in the setting region where the angle α is 44 degrees or more, the operation load is small, there is no tight feeling, and the rotation operation is smooth. Therefore, it was confirmed that it was not necessary to use grease.

As explained above, according to the opening / closing support mechanism of the cover body of this invention, in the opening / closing support mechanism of the biaxial pivotal cover body which can aim at the space space of an installation space, the arrangement | positioning form of an axis | shaft can be easily performed. It can be optimized, and smooth opening and closing operation can be reliably achieved, and it is possible to abolish the use of a lubricant such as grease.

Therefore, by eliminating the coating process of grease or the like, it is possible to reduce the manufacturing cost and to reliably prevent the occurrence of contamination around the grease.

Claims (4)

A rotational shaft formed on an outer surface of the closure body such as a container, a rotation member supported by the rotational shaft and pivoting along an outer surface of the closure body, and along the rotational motion trajectory of the rotational member. An arc-shaped guide hole formed on a side surface of the guide hole; A first slide shaft axially supported and a second slide shaft formed in the lid and inserted into the guide hole of the to-be-closed body, In the closed state in which the opening of the to-be-closed body is closed by the lid, the first slide shaft is positioned at one end of the guide hole, and the second slide shaft is positioned at the tip of the branch hole. By rotating the cover body in the open direction in the state, first, the cover body is rotated a predetermined angle about the first slide shaft so that the second slide shaft moves from the tip end of the branch hole to the guide hole, and then continues. The first slide shaft and the second slide shaft move along the guide hole toward the other end thereof, and together with these, the pivot member rotates about the pivot shaft so that the lid rotates about the pivot shaft. Opening the opening of the to-be-closed body and closing the cover body in the open state By rotating in the direction of the cover, first, the first slide shaft and the second slide shaft move along the guide hole toward one end thereof, and at the same time, the rotating member rotates about the rotating shaft with the cover member. When the first slide shaft reaches one end of the guide hole, the second slide shaft enters the branch hole from the guide hole and moves toward the tip end side of the branch hole when the first slide shaft reaches one end of the guide hole. In the cover body opening and closing support mechanism configured to rotate the cover body about the first slide shaft to close the opening of the opening and closing body, When α is the friction coefficient between the inner surface of the guide hole and the second slide shaft, the angle formed by the line connecting the pivot shaft and the first slide shaft and the line connecting the pivot shaft and the second slide shaft is α. The rotating shaft, the first slide shaft, and the second slide shaft are formed so as to satisfy the expression ≥ 2 μtan ^-1 . The method according to claim 1, Gripping means for gripping the second slide shaft to the outside of the guide hole to maintain the closed state and the open state of the cover body by the holding force, and to open or close the cover body at a predetermined angle. Opening and closing support mechanism of cover body which is constructed to be strong. The method according to claim 1, The inner surface of the guide hole is formed of acrylonitrile butadiene styrene (ABS) resin, the second slide shaft is formed of metal, and the α value is 44 degrees or more. The method according to any one of claims 1 to 3, An opening / closing support mechanism of a cover body, wherein the body to be closed is a container for interior storage such as a cup holder and a small box.