KR20230105960A - Damper for Glove Box - Google Patents

Abstract

The embodiment is a cylinder having a space formed therein and having a coupling portion having an opening formed at one end; a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; Provided is a damper for a glove box including a valve that is inserted into the opening of the coupling part and is movably disposed and forms a first orifice communicating with the first space and the outside.

Description

Damper for Glove Box {Damper for Glove Box}

The present invention relates to a damper for a glove box, and more particularly, to a damper for a glove box capable of uniformly controlling the opening and closing speed of the glove box.

The glove box is installed on the dashboard on the passenger side of the vehicle and serves as a storage space. Since the glove box includes a cover, the inner space is opened or closed by the cover. A damper is installed on the cover to prevent the movement of the cover to open the inner space from being too fast. An air damper is mainly installed.

The air damper consists of a cylinder and a piston, and if necessary, a valve is additionally installed in the cylinder to control the speed of the piston.

However, the conventional damper has a problem in that the movement of the cover is too fast when the load acting on the cover becomes heavy due to the weight of the cover or objects accommodated in the inner space of the glove box, and in the opposite case, the movement of the cover is too slow.

If the glove box moves too fast, the glove box user may be surprised by the speed, and if the glove box moves too slowly, the glove box user may feel stuffy.

On the other hand, the self-weight of the glove box cover is determined by how the cover is designed. Since the cover's self-weight is a variable that determines the movement speed of the cover, there is a problem in that the design of the cover cannot help but be constrained in order to maintain an appropriate cover speed. .

An object of the embodiment is to provide a damper for a glove box in which a cover can move at a constant speed regardless of a load acting on the cover of the glove box.

The problem to be solved in the embodiment is not limited thereto, and it will be said that the solution to the problem described below or the purpose or effect that can be grasped from the embodiment is also included.

A damper for a glove box according to an embodiment of the present invention includes a cylinder having a coupling part having a space formed therein and an opening formed at one end; a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; and a valve which is movably inserted into the opening of the coupling part and forms a first orifice communicating the first space with the outside.

The valve may include a movable member capable of reciprocating toward the opening and a protrusion extending from the movable member and inserted into the opening.

The coupling part may further include a guide member extending upward from one end of the cylinder and having a guide groove formed along a vertical direction.

The valve may include a moving member capable of reciprocating toward the opening; a protrusion extending from the movable member and inserted into the opening; And it may include a fastening rod having one end coupled to the upper end of the moving member and the other end coupled to the guide groove of the guide member.

A size of the first orifice formed by the protrusion part and the coupling part may be formed to change according to the movement of the piston.

The movable member may have an arcuate shape made of an elastically deformable material, and may be formed such that a size of the first orifice decreases as the piston moves from an upper side to a lower side of the cylinder.

The damper for the glove box includes a buffering member disposed between the coupler and the piston to form a third space dividing the first space and having a second orifice connecting the first space and the third space. can include more.

The buffering member may include: a first support portion extending from an upper surface of the end of the piston toward one end of the cylinder; a second support part spaced apart from the first support part and extending from an upper surface of the central part of the piston toward one end of the cylinder; and a flat portion disposed at upper ends of the first and second supports to form the third space SP3 together with the upper surface of the piston and side surfaces of the first and second supports. The second orifice may be formed in the second support.

A damper for a glove box according to another embodiment of the present invention includes a cylinder having a coupling part having a space formed therein and an opening formed at one end; a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; And it may include a valve that is inserted into the opening of the coupling part and is movably disposed. The coupling part may include a first stepped part for forming a third orifice between the valve and the first space of the cylinder. The valve may include an orifice forming member having an inclined surface on a surface adjacent to the first stepped portion. The orifice may be formed by the first stepped portion and the orifice forming member.

The valve may further include an intermediate member larger than the orifice forming member on the orifice forming member.

The valve may further include a cap member formed on the intermediate member to be larger than the intermediate member and covering an opening of one end of the cylinder.

The coupling part may further include a second stepped part located on the upper side of the outer side of the first stepped part. The valve may further include an elastic member disposed between an end lower surface of the cap member and the second stepped portion.

A damper for a glove box according to another embodiment of the present invention includes a cylinder having a coupling part having a space formed therein and an opening formed at one end; a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; and a valve movably disposed above the opening of the coupling part and forming an orifice in the opening. The coupling part may include a flat part having an opening to expose a central axis region of the cylinder; a first extension part extending from the flat part toward the central part of the opening and having a curved upper surface; and a second extension part extending upward from the flat part.

The valve may include an arcuate member covering the opening exposed through the first extension part, an intermediate member and an upper member sequentially disposed on the arcuate member.

The arcuate member may be formed to be in contact with and separable from the curved surface of the first extension part.

The intermediate member may be formed on the arcuate member to be larger than the arcuate member, and may be located inside the second extension together with the arcuate member.

The intermediate member may have an inclined surface to form the orifice between the second extension part and the second extension part.

The upper member may be larger than the intermediate member on the intermediate member and disposed above the second extension portion.

A damper for a glove box according to another embodiment of the present invention includes a cylinder having a coupling part having a space formed therein and an opening formed at one end; a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; It may include a valve that is inserted into the opening of the coupling part and is movably disposed and forms an orifice communicating with the first space and the outside. The coupling part may include a flat part having an opening to expose a central axis region of the cylinder; a first extension part extending from the flat part toward the central part of the opening and having a first inclined surface having an inner surface having a first inclined angle; and a second extension portion extending upward from the first extension portion and formed such that an inner surface thereof has a second inclined surface having a second inclined angle.

The valve may include an anchor-type member disposed to be in contact with and detachable from the first inclined surface of the first extension and the second inclined surface of the second extension.

The anchor-type member may include an anchor portion contacting and separating from the first inclined surface of the first extension portion, and at least one protrusion formed on the anchor portion and contacting and separating from the second inclined surface of the second extension portion. there is.

The orifice is a variable type whose diameter is changed by contact and separation between the anchor portion of the anchor-type member and the first inclined surface of the first extension portion and contact and separation between the protrusion portion and the second inclined surface of the second extension portion. It can be an orifice.

The anchor-type member is formed of an elastically deformable material, and may form the orifice between the second extension portion and the second extension portion.

The valve may include: a horizontal member disposed above the second extension part; a connecting member connecting the anchor-like member and the horizontal member between the anchor-like member and the horizontal member; And it may further include an elastic member disposed between the horizontal member and the flat portion of the coupling portion.

The cylinder may be formed such that its cross-sectional area becomes smaller as it goes from one end to the other end.

A side surface connecting one end and the other end of the cylinder may be formed to have an inclined surface in at least a partial region.

The damper for the glove box may further include a piston rod coupled to the piston in the second space to transfer power applied from the outside to the piston.

The damper for the glove box may further include a seal ring disposed in a groove formed on an outer circumference of the piston to seal the first space and the second space, and contacting an inner wall of the cylinder.

According to the damper for a glove box according to the embodiment, the effect of moving the cover at a constant speed regardless of the load acting on the cover of the glove box can be obtained.

1 is a cross-sectional view showing a damper according to a first embodiment of the present invention;
2 is a cross-sectional view showing a damper according to a second embodiment of the present invention;
3 is a cross-sectional view showing a damper according to a third embodiment of the present invention;
4 is a cross-sectional view showing a damper according to a fourth embodiment of the present invention;
5 is a cross-sectional view showing a damper according to a fifth embodiment of the present invention;
6a and 6b are cross-sectional views showing a state in which the valve of the damper according to the fifth embodiment of the present invention is changed according to the reciprocating motion of the piston;
7 is a cross-sectional view showing a damper according to a sixth embodiment of the present invention;
8A and 8B are cross-sectional views showing a state in which a valve of a damper according to a sixth embodiment of the present invention is changed according to the reciprocating motion of a piston.

The present embodiments may be modified in other forms or combined with each other, and the scope of the present invention is not limited to each of the embodiments described below.

Even if a matter described in a specific embodiment is not described in another embodiment, it may be understood as a description related to another embodiment, unless there is a description contrary to or contradictory to the matter in another embodiment.

For example, if the characteristics of component A are described in a specific embodiment and the characteristics of component B are described in another embodiment, the opposite or contradictory description even if the embodiment in which components A and B are combined is not explicitly described. Unless there is, it should be understood as belonging to the scope of the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

These terms are only used to distinguish the component from other components, and the term is not limited to the nature, order, or order of the corresponding component.

Hereinafter, a damper according to a first embodiment of the present invention will be described with reference to FIG. 1 .

1 is a cross-sectional view showing a damper according to a first embodiment of the present invention.

The damper for a glove box according to the present embodiment is for adjusting the opening speed of a cover of a glove box installed in a vehicle. The glove box is installed on the dashboard of a passenger seat of a vehicle and is installed to provide a storage space to a vehicle user.

Referring to FIG. 1, the damper 10 for a glove box according to the first embodiment includes a cylinder 11, a piston 12, a piston rod 13, a seal ring 14, and a valve 15 can include

As shown in FIG. 1, the cylinder 11 has one end (eg, upper end), the other end (eg, lower end), and a side part 11a connecting one end and the other end, and a space therein. It may be cylindrical to form. In this embodiment, the cylinder 11 is described as having a cylindrical shape, but the shape of the cylinder is not limited to a cylindrical shape and may have various shapes.

The cylinder 11 may further include a coupling portion 11b formed at one end and having an opening into which a portion of a valve to be described later is inserted.

The coupling portion 11b of the cylinder may include a flat portion 11b1 having an opening to expose a central axis region of the cylinder 11 and an extension portion 11b2 extending upward from the opening.

The cylinder 11 is shown as having a vertical shape in which the side portion 11a connecting one end and the other end has no inclination, but a space of a tapered shape in which the cross section decreases from one end to the other end. can form Accordingly, the entire side portion 11a of the cylinder 11 may have no inclined surface or at least a portion thereof may have an inclined surface.

In addition, this embodiment illustrates that the other end and the side portion of the cylinder are integrally formed, but the present invention is not limited thereto. For example, the other end of the cylinder may be formed to be open, and the cylinder cap may be covered on the open other end.

The piston 12 may divide the inner space of the cylinder 1 into a first space SP1 and a second space SP2 while moving up and down along the inner wall surface of the cylinder 11 . The piston 12 has a groove formed along the outer circumference, and a seal ring 14 is disposed in the groove to seal the first space SP1 and the second space SP2 inside the cylinder 11. . The piston 12 also includes an orifice 12h connecting the first space SP1 and the second space SP2 to adjust the pressure in the first space SP1 and the second space SP2. can do

The piston rod 13 may include one end coupled to the lower surface of the piston 12 disposed in the inner space of the cylinder 11 and the other end coupled to the opening/closing member outside the cylinder 11 . Therefore, when the piston rod 13 moves according to the operation of the opening/closing member, the piston 12 also operates in the inner space of the cylinder to control the pressure in the first space SP1.

The valve 15 may be disposed on the coupling part 11b of one end of the cylinder 11 so as to be movable up and down. The valve 15 may include a moving member 15a and a protrusion 15b.

The movable member 15a of the valve 15 may be formed of an elastically deformable material such as rubber or silicon and may be formed in an arch shape. An end of the arcuate movable member 15a may be placed on the flat portion 11b1 of the coupling portion 11b of the cylinder. In addition, a cover coupled to one end of the cylinder 11 may be covered on the top of the movable member 15a to prevent the movable member 15a from being separated from the coupling portion 11b of the cylinder.

The protrusion 15b of the valve 15 can be inserted into the opening formed by the flat portion 11b1 and the extension portion 11b2 of the cylinder engaging portion 11b in the central region of the movable member 15a. The protrusion 15b may be formed such that a distance between the opening and the protrusion narrows as the depth of the protrusion 15b is inserted into the opening of the coupling portion 11b. That is, the protrusion 15b may be formed in a tapered shape to form a variable orifice 15c in which the degree of opening of the opening may be changed according to the degree of insertion into the opening.

According to the configuration described above, when a low load is applied to the opening and closing member, that is, an external load is applied to the opening and closing member to move the piston 12 downward, rather than the size of the variable orifice 15c of the valve 15 in the initial state. When this is done, the size of the variable orifice 15c is reduced.

This will be described in more detail. First, when the piston 12 moves downward, the arcuate movable member 15a made of an elastic material receives force in a downward direction along the movement direction of the piston 12 . Accordingly, the moving member 15a of the valve 15 moves downward. Since the movable member 15a of the valve 15 is made of an elastic material, even if the end of the movable member 15a contacts the coupling part 11b, the movement does not stop, and the shape gradually changes from an arch shape to a flat plate shape and moves. . As the movable member 15a of the valve 15 moves downward, the protrusion 15b is deeply inserted into the opening, and the open area of the variable orifice 15c gradually decreases. Accordingly, since the opening speed of the glove box can be reduced by increasing the damping force, the effect of smoothly performing the operation of the opening and closing member can be obtained.

On the other hand, when the piston 12 moves upward, the moving member 15a of the valve 15 formed of an elastic material receives force in the upward direction along the moving direction of the piston, so that the protruding part deeply inserted into the opening (15b) exits toward the upper side of the opening, so that the open area of the variable orifice (15c) gradually becomes smaller and larger. Accordingly, the damping force is reduced, so that the glove box can be closed quickly.

In this embodiment, the first space SP1 inside the cylinder 11 and the space outside the cylinder 11 are connected by the variable orifice 15c formed between the protrusion 15b and the opening of the coupling part 11b. Since the first space SP1 and the second space SP2 are connected by the orifice 12h formed in the piston 12, the damping force can be dispersed in both directions, so that the opening and closing member can operate smoothly. effect can be obtained.

In addition, when the cylinder 11 is formed to have a reverse gradient structure in which the diameter of the upper side is wider than the diameter of the lower side, the piston 12 shown in FIG. 1 is moved by the movement of the opening and closing member When moving toward the lower surface of the cylinder 11, the frictional force between the wall surface of the side of the cylinder and the seal ring 14 gradually increases due to the reverse gradient structure of the cylinder 11. Therefore, as the piston 12 moves toward the lower surface of the cylinder 11, the speed decreases, so that the operation of the opening and closing member can be performed smoothly.

Next, a damper according to a second embodiment of the present invention will be described with reference to FIG. 2 . 2 is a cross-sectional view showing a damper according to a second embodiment of the present invention.

Referring to FIG. 2 , the damper 20 for a glove box according to the second embodiment may include a cylinder 11, a piston 12, a piston rod 13, a seal ring 14 and a valve 25. there is.

In the second embodiment, the cylinder 11, the piston 12, the piston rod 13, and the seal ring 14 are the cylinder 11, the piston 12, and the piston rod 13 described in the first embodiment. , and seal ring 14 are substantially the same. Therefore, descriptions thereof are omitted to avoid redundant description.

Hereinafter, the valve 25 having a structure different from that of the first embodiment will be described in more detail.

The valve 25 according to the second embodiment may be disposed so as to be movable up and down on the coupling part 11b of one end of the cylinder 11. The valve 25 may include a moving member 25a, a protrusion 25b, a fastening rod 25d and a guide member 25e.

The movable member 25a of the valve 15 may be formed of an elastically deformable material such as rubber or silicon, and may be formed in an arch shape. An end of the arcuate movable member 25a may be positioned on the flat portion 21b1 of the coupling portion 21b. The arcuate movable member 25a may move in the same direction as the movement direction of the piston 12 .

The protruding portion 25b of the valve 25 can be inserted into an opening formed by the flat portion 21b1 and the extended portion 21b2 of the cylinder coupling portion 21b in the central region of the movable member 25a. The protrusion 25b may be formed such that the distance between the opening and the protrusion 25b decreases as the depth of the protrusion 25b is inserted into the opening of the coupling portion 21b. That is, the protrusion 25b may be formed in a tapered shape to form a variable orifice 25c in which the degree of opening of the opening may be changed according to the degree of insertion into the opening.

The fastening rod 25d of the valve 25 has one end connected to the upper end of the movable member 25a and the other end movably coupled to the guide member 25e.

The guide member 25e may be coupled to the flat portion 21b1 of the coupling portion 21b. The guide member 25e may include a guide groove 25h formed along the movement direction of the moving member 25a. The guide groove 25h is movably coupled to the other end of the fastening rod 25d of the valve, and guides the motion path of the fastening rod 25d when the moving member 25a moves, and the movement of the moving member 25a at the same time. It can perform a stopper function that limits the range to the upper and lower positions.

According to the damper 20 including the valve 25 according to the second embodiment, the effect obtainable from the valve 15 according to the first embodiment can be obtained and the range of motion of the valve 25 can be controlled can be obtained.

Next, a damper according to a third embodiment of the present invention will be described with reference to FIG. 3 .

3 is a cross-sectional view showing a damper according to a third embodiment of the present invention.

Referring to FIG. 3, the glove box damper 30 according to the third embodiment includes a cylinder 11, a piston 12, a piston rod 13, a seal ring 14, a valve 15, and a buffering member ( 36) may be included.

In the third embodiment, the piston 12, piston rod 13, seal ring 14 and valve 15 are the piston 12, piston rod 13, and seal ring 14 described in the first embodiment. and valve 15 are substantially the same. Therefore, descriptions thereof are omitted to avoid redundant description.

Hereinafter, the buffering member 36 having a structure different from that of the first embodiment will be described in more detail.

The buffering member 36 includes a first support part 36a disposed on the upper surface of the piston 12 to form a third space SP3 dividing the first space in the first space SP1 of the cylinder 11, It may include 2 support parts 36b and a flat part 36c.

The first support portion 36a may be disposed to extend from an upper surface of the end of the piston 12 toward one end of the cylinder 11 .

The second support portion 36b may be spaced apart from the first support portion 36a and extend from the upper surface of the central portion of the piston 12 toward one end of the cylinder 11 . The second support part 36b may include an orifice 36h. The upper end of the first support part 36a and the first support part 36b may be formed to have the same height from the upper surface of the piston 12 .

The flat part 36c is disposed at the upper end of the first and second support parts 36a and 36b, and the upper surface of the piston 12 and the side surface of the first and second support parts 36a and 36b are attached to the cylinder 11. A third space SP3 obtained by dividing one space SP1 may be formed.

The damper 30 of the third embodiment differs from the damper 10 of the first embodiment in that a buffering member 36 is added. According to the third embodiment, the first space SP1 of the cylinder 11 is divided to have a third space SP3, and the orifice 36h of the second support part 36b is separated from the first space SP1. Since the three spaces SP3 are connected, the damping force is increased by buffering the pressure applied to the first space SP1 by the motion of the piston 12 to obtain an additional effect of preventing the double opening operation of the cover. can

Next, a damper according to a fourth embodiment of the present invention will be described with reference to FIG. 4 .

4 is a cross-sectional view showing a damper according to a fourth embodiment of the present invention.

Referring to FIG. 4 , the glove box damper 40 according to the fourth embodiment may include a cylinder 11, a piston 12, a piston rod 13, a seal ring 14, and a valve 45. there is.

In the fourth embodiment, the piston 12, piston rod 13, and seal ring 14 are substantially the same as the piston 12, piston rod 13, and seal ring 14 described in the first embodiment. same. Therefore, descriptions thereof are omitted to avoid redundant description.

Hereinafter, a partial structure of the cylinder 11 and the valve 45 having a structure different from that of the first embodiment will be described in more detail.

The cylinder 11 is different from the first embodiment in the coupling portion 11b coupled to the valve 45, but the rest of the configuration is substantially the same as that of the first embodiment. Therefore, the coupling portion 11b of the cylinder 11 will be described in more detail.

The coupling part 11b of the cylinder 11 supports the first stepped part 11b1 for forming a variable orifice between the valve 45 and the first space SP1 of the cylinder and an elastic member 45d to be described later. It may include a second stepped portion (11b2) for.

The valve 45 may be disposed at one end side of the cylinder 11 to cover the opening of the cylinder 11 . The valve 45 may include a variable orifice forming member 45a, an intermediate member 45b, a cap member 45c, and an elastic member 45d.

The variable orifice forming member 45a may have an inclined surface adjacent to the coupling portion 11b so that the variable orifice 45h may be formed between the first stepped portion 11b1 of the coupling portion 11b. When the valve 45 moves downward due to the downward movement of the piston 12, the distance between the variable orifice forming member 45a and the first stepped portion 11b1 of the engaging portion 11b gradually decreases and becomes variable. When the size of the orifice 45h decreases and the valve 45 moves upward due to the upward movement of the piston 12, the first stepped portion of the variable orifice forming member 45a and the engaging portion 11b The interval between 11b1) may gradually increase to increase the size of the variable orifice 45h.

The intermediate member 45b is disposed on the variable orifice forming member 45a and may be larger than the variable orifice forming member 45a. The intermediate member 45b may function as a stopper to stop the movement of the valve 45 by coming into contact with the second stepped portion 11b1 of the coupling portion 11b when moving downward.

The cap member 45c is disposed on the intermediate member 45b and may be larger than the intermediate member 45b. The cap member 45c may cover the opening of one end of the cylinder 11 .

The elastic member 45d may be disposed between the lower end of the cap member 45c and the second stepped portion 11b1. The elastic member 45d can slow down the downward movement of the valve 45 and facilitate its upward return to its original state.

Like the damper 10 of the first embodiment, the damper 40 of the fourth embodiment has a variable orifice 45h formed by the valve 45 added in addition to the orifice 12h of the piston 12. The smooth opening and closing operation of the glove box can be obtained by controlling the opening speed of the glove box.

Next, a damper according to a fifth embodiment of the present invention will be described with reference to FIGS. 5, 6A and 6B.

5 is a cross-sectional view showing a damper according to a fifth embodiment of the present invention, and FIGS. 6A and 6B are cross-sectional views showing a state in which valves of the damper according to the fifth embodiment of the present invention are changed according to the reciprocating motion of the piston. am.

5, 6a and 6b, the damper 50 for a glove box according to the fifth embodiment includes a cylinder 11, a piston 12, a piston rod 13, a seal ring 14, and a valve 55 ) may be included.

In the fifth embodiment, the cylinder 11, the piston 12, the piston rod 13, and the seal ring 14 are the cylinder 11, the piston 12, and the piston rod 13 described in the first embodiment. , and seal ring 14 are substantially the same. Therefore, descriptions thereof are omitted to avoid redundant description.

Hereinafter, the coupling part 11b and the valve 55 of the cylinder 11 having a structure different from that of the first embodiment will be described in more detail.

The coupling portion 11b of the cylinder includes a flat portion 11b1 having an opening to expose the central axis region of the cylinder 11, and a first extension extending from the flat portion 11b1 toward the central portion of the opening and having a curved upper surface. A portion 11b2 and a second extension portion 11b3 extending upward from the flat portion 11b1 may be included.

The valve 55 includes an arcuate member 55a covering the opening exposed through the first extension 11b2, an intermediate member 55b and an upper member 55c sequentially disposed on the arcuate member 55a. can do.

The arcuate member 55a may be formed to be in contact with and separable from the curved surface of the first extension portion 11b2. The arcuate member 55a may be formed of an elastically deformable material such as rubber or silicone. When the valve 55 is moved downward by the downward movement of the piston 12, the arcuate member 55a may closely contact the first extension 11b2 as shown in FIG. 6A. When the valve 55 is moved upward by the upward movement of the piston 12, the arcuate member 55a may be released from contact with the first extension portion 11b2 as shown in FIG. 6B.

The intermediate member 55b is disposed on the arcuate member 55a and may be formed larger than the arcuate member 55a. Both the intermediate member 55b and the arcuate member 55a may be positioned inside the second extension 11b2. The intermediate member 55b may have an inclined surface so that a variable orifice 55h may be formed between the second extension part 11b2 and the intermediate member 55b.

The upper member 55c is disposed on the intermediate member 55b and may be formed larger than the intermediate member 55b. The upper member 55c may be disposed above the second extension portion 11b2 so that the valve 55 is not inserted into the second extension portion 11b2. The upper member 55c of the valve 55 is in the initial position of the valve 55, that is, the position where the piston 22 is disposed close to one end (upper end) of the cylinder 11, as shown in FIG. 6B. Likewise, the size of the orifice 55h may have a maximum size.

The upper member 55c of the valve 55 is in a position where the piston 22 of the valve 55 is disposed close to the other end (lower end) of the cylinder 11, as shown in FIG. 6A, the orifice 55h ) may have a minimum size.

Therefore, the orifice 55h formed by the valve 55 is a variable orifice whose size changes according to the position of the piston.

Since the damper 50 of the fifth embodiment has a variable orifice 55h formed by the valve 55 added in addition to the orifice 12h of the piston 12, like the damper 10 of the first embodiment, The smooth opening and closing operation of the glove box can be obtained by controlling the opening speed of the glove box.

Next, a damper according to a sixth embodiment of the present invention will be described with reference to FIGS. 7, 8A and 8B.

7 is a cross-sectional view showing a damper according to a sixth embodiment of the present invention, and FIGS. 8A and 8B show a state in which the valve of the damper according to the sixth embodiment of the present invention is changed according to the reciprocating motion of the piston. it is a cross section

7, 8a and 8b, the damper 60 for a glove box according to the sixth embodiment includes a cylinder 11, a piston 12, a piston rod 13, a seal ring 14, and a valve 65 ) may be included.

In the sixth embodiment, the cylinder 11, the piston 12, the piston rod 13, and the seal ring 14 are the cylinder 11, the piston 12, and the piston rod 13 described in the first embodiment. , and seal ring 14 are substantially the same. Therefore, descriptions thereof are omitted to avoid redundant description.

Hereinafter, the coupling part 11b and the valve 55 of the cylinder 11 having a structure different from that of the first embodiment will be described in more detail.

The coupling portion 11b of the cylinder includes a flat portion 11b1 having an opening to expose a central axis region of the cylinder 11, and an inner surface extending from the flat portion 11b1 toward the central portion of the opening and having a first inclination angle. It may include a first extension portion 11b2 and a second extension portion 11b3 extending upward from the first extension portion 11b2 and having a second inclination angle greater than the first inclination angle of the inner surface.

The valve 65 includes an anchor-type member 65c covering the opening exposed through the first extension portion 11b2, a horizontal member 65c disposed above the second extension portion 11b3, and an anchor-type member 65c. and a connecting member 65b connecting the anchor-type member 65c and the horizontal member 65c between the horizontal member 65c and disposed between the horizontal member 65c and the flat portion 11b1 of the connecting portion 11b. It may include an elastic member (65d) to be.

The anchor-type member 65c may include at least one protrusion 65cp formed on an upper side thereof. The protruding portion 65cp of the anchor-type member 65c may be formed to be in contact with and detachable from the second inclined surface of the second extension portion 11b3. The wings of the anchor-type member 65c may be formed to be in contact with and detachable from the first inclined surface of the first extension 11b2. The anchor-type member 65c may be formed of an elastically deformable material such as rubber or silicone.

When the valve 65 is moved downward by the downward movement of the piston 12, the anchor-type member 65c, as shown in FIG. and the lower wing portion may contact the second inclined surface of the second extension portion 11b3.

In addition, when the valve 65 is moved upward by the upward movement of the piston 12, the anchor-type member 65c, as shown in FIG. The deformable orifice 65h is separated from the inclined surface, and the lower wing portion is separated from the first inclined surface of the first extension 11b2, and between the wing end of the anchor-like member 65c and the second inclined surface of the second extension 11b3. ) can be formed.

Like the damper 10 of the first embodiment, the damper 50 of the sixth embodiment has a variable orifice 65h formed by the valve 55 added in addition to the orifice 12h of the piston 12. The smooth opening and closing operation of the glove box can be obtained by controlling the opening speed of the glove box.

The above description is merely an example of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10, 20, 30, 40, 50: damper 11: cylinder
12: piston 12h: orifice
13, 23: piston rod 14: seal ring
15, 25, 35, 45, 55, 65: valve
15c, 25c, 36c, 45h, 55h, 65h: Orifice

Claims (27)

A cylinder having a space formed therein and having a coupling part having an opening at one end thereof;
a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space;
A damper for a glove box comprising a valve inserted into and movably disposed in the opening of the coupling part and forming a first orifice communicating with the first space and the outside.
According to claim 1,
The valve includes a movable member capable of reciprocating toward the opening and a protrusion extending from the movable member and inserted into the opening.
According to claim 2,
The coupling part further includes a guide member extending upward from one end of the cylinder and having a guide groove formed along a vertical direction,
the valve,
a moving member capable of reciprocating toward the opening;
a protrusion extending from the movable member and inserted into the opening; and
A damper for a glove box comprising a fastening rod having one end coupled to the upper end of the movable member and the other end coupled to the guide groove of the guide member.
According to claim 2,
A damper for a glove box in which a size of the first orifice formed by the protrusion part and the coupling part changes according to the movement of the piston.
According to claim 2,
The movable member has an arcuate shape formed of an elastically deformable material, and the size of the first orifice decreases as the piston moves from an upper side to a lower side of the cylinder.
According to claim 2,
a glove box further including a buffering member disposed between the coupler and the piston to form a third space divided from the first space and having a second orifice connecting the first space and the third space; damper for.
According to claim 6,
The buffering member,
a first support part disposed to extend from an upper surface of an end of the piston toward one end of the cylinder;
a second support part spaced apart from the first support part and extending from an upper surface of the central part of the piston toward one end of the cylinder; and
A flat part disposed at the upper end of the first and second supports to form the third space SP3 together with the top surface of the piston and the side surfaces of the first and second supports;
The second orifice is a damper for a glove box formed in the second support part.
A cylinder having a space formed therein and having a coupling part having an opening at one end thereof;
a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; and
It includes a valve inserted into the opening of the coupling part and movably disposed,
The coupling part includes a first stepped part for forming a third orifice between the valve and the first space of the cylinder,
The valve includes an orifice forming member having an inclined surface on a surface adjacent to the first stepped portion,
The orifice is formed by the first stepped portion and the orifice forming member.
According to claim 8,
The valve further comprises an intermediate member formed on the orifice forming member to be larger than the orifice forming member.
According to claim 9,
The valve is formed on the intermediate member to be larger than the intermediate member, and further comprises a cap member covering an opening of one end of the cylinder.
According to claim 10,
The coupling part further includes a second stepped portion located above the outer side of the first stepped portion,
The valve further comprises an elastic member disposed between an end lower surface of the cap member and the second stepped portion.
A cylinder having a space formed therein and having a coupling part having an opening at one end thereof;
a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; and
A valve movably disposed above the opening of the coupling part and forming an orifice in the opening,
The coupling part,
a flat portion having an opening to expose a central axis region of the cylinder;
a first extension part extending from the flat part toward the central part of the opening and having a curved upper surface; and
A damper for a glove box comprising a second extension portion extending upward from the flat portion.
According to claim 12,
The damper for a glove box, wherein the valve includes an arcuate member covering an opening exposed through the first extension part, an intermediate member and an upper member sequentially disposed on the arcuate member.
According to claim 13,
The arcuate member is a damper for a glove box formed to be in contact with and separable from the curved surface of the first extension part
According to claim 14,
The intermediate member is formed on the arcuate member to be larger than the arcuate member, and is located inside the second extension together with the arcuate member.
According to claim 15,
The intermediate member has an inclined surface so that the orifice can be formed between the second extension part and the damper for a glove box.
According to claim 16,
The upper member is formed on the intermediate member to be larger than the intermediate member, and is disposed above the second extension portion.
A cylinder having a space formed therein and having a coupling part having an opening at one end thereof;
a piston accommodated reciprocally in the space of the cylinder to divide the cylinder into a first space and a second space; and
A valve inserted into and movably disposed in the opening of the coupling part and forming an orifice communicating with the first space and the outside,
The coupling part,
a flat portion having an opening to expose a central axis region of the cylinder;
a first extension part extending from the flat part toward the central part of the opening and having a first inclined surface having an inner surface having a first inclined angle; and
A damper for a glove box comprising a second extension extending upward from the first extension and having an inner surface having a second inclined surface having a second inclined angle.
According to claim 18,
The damper for a glove box, wherein the valve includes an anchor-type member disposed to be in contact with and detachable from the first inclined surface of the first extension part and the second inclined surface of the second extension part.
According to claim 19,
The anchor member includes an anchor portion contacting and separating from the first inclined surface of the first extension portion, and at least one protrusion formed on the anchor portion and contacting and separating from the second inclined surface of the second extension portion. Damper for box.
According to claim 20,
The orifice is a variable type whose diameter is changed by contact and separation between the anchor portion of the anchor-type member and the first inclined surface of the first extension portion and contact and separation between the protrusion portion and the second inclined surface of the second extension portion. Damper for glove box with orifice.
According to claim 19,
The anchor-type member is formed of an elastically deformable material and forms the orifice between the second extension portion and the damper for a glove box.
According to claim 19,
the valve,
a horizontal member disposed above the second extension portion;
a connecting member connecting the anchor-like member and the horizontal member between the anchor-like member and the horizontal member; and
The damper for a glove box further comprises an elastic member disposed between the horizontal member and the flat part of the coupling part.
The method of any one of claims 1 to 23,
The cylinder is a damper for a glove box whose cross-sectional area decreases from one end to the other end.
The method of any one of claims 1 to 23,
A side surface connecting one end and the other end of the cylinder has an inclined surface in at least a portion of the damper for a glove box.
The method of any one of claims 1 to 23,
The damper for a glove box further comprises a piston rod coupled to the piston in the second space to transmit power applied from the outside to the piston.
The method of any one of claims 1 to 23,
The damper for a glove box further includes a seal ring disposed in a groove formed on an outer circumferential portion of the piston to seal the first space and the second space, and contacting an inner wall of the cylinder.

Images