KR100321380B1 - Damper device - Google Patents

Abstract

(Problem) Provide damper device that can adjust spring elasticity.

Solution The damper device 10 includes a case 40, a shaft 50, springs 60 and 70, and a viscous fluid 80. At least one of at least two protrusions 140, 150, 160, 160 is formed between the case 40 and the shaft 50, respectively. The two protrusions 140 and 150 and 160 and 160 allow rotation of the shaft 50 in the other direction opposite to one direction, and engage with each other when the shaft 50 is rotated in the other direction, thereby allowing a predetermined angle (eg, 180 degrees). It is for receiving the rotational force of the spring 60 for every).

Description

Damper Device {DAMPER DEVICE}

The present invention relates to a damper device, in particular to be able to adjust the elasticity of the spring.

The conventional damper device is comprised from the following components, for example as described in Unexamined-Japanese-Patent No. 7-238971.

1) casing

2) Damper Shaft

3) torsion coil spring

4) silicone oil

5) cap

6) O-ring

The damper shaft and the cap are each provided with engaging projections facing each other. When the damper shaft is rotated, the torsion coil springs are held in a preliminary winding state by engaging the two convex convex portions over each other.

In addition, Japanese Utility Model Registration No. 2521059 discloses "an engagement structure of a case main body and a cover" as what can be kept in a preliminary winding state.

However, in the above-described conventional damper device, although the prewound winding of the torsion coil spring is possible, there is a first problem that the elasticity of the torsion coil spring cannot be adjusted.

In addition, the conventional damper device has a second problem that the number of parts is large and the part value and assembly cost are expensive.

Here, each invention described in each claim of the present application has been made in view of the first and second problems of the above-described prior art, and the object thereof is as follows.

The invention described in claim 1 has been made in view of the above-described first problem of the prior art, and is made to adjust the elasticity of the spring.

The invention described in claim 2 has been made in view of the second problem of the above-described prior art, and the cap can be omitted in addition to the object of the invention described in claim 1 described above.

The invention described in claim 3 has been made in view of the above-described second problem of the prior art, and in addition to the object of the invention described in claim 2, the O-ring can be omitted by using grease instead of silicone oil. will be.

The invention as set forth in claim 4, in addition to the object of the invention as set forth in any one of claims 1 to 3, enables the damper effect to be obtained even when the weight of the door itself is light.

The invention described in claim 5 allows the damper effect to be obtained even when the door has a heavy weight in addition to the object described in any one of claims 1 to 3 described above.

1 is an exploded perspective view of a part of the case and the shaft

2 is a partial cross-sectional view showing an attached state of the damper device.

3 is an exploded perspective view of the damper device

4 is an exploded cross-sectional view of the damper device;

5 is a cross-sectional view of the damper device

Figure 6 is a side view of the damper device

7 is a cross-sectional view of the damper device

FIG. 8 is a view corresponding to FIG. 1, with a partial perspective view of the case and shaft

FIG. 9 is a view corresponding to FIG. 7 and showing a state in which a shaft is rotated. FIG.

10 is a perspective view of a damper device showing an example of use of the first spring;

FIG. 11 is a sectional view corresponding to FIG. 2 and showing a mounting state of the damper device shown in FIG. 10. FIG.

12 is a view corresponding to FIG. 10, illustrating a temporary winding state of the spring;

FIG. 13 is a view corresponding to FIG. 10, showing a perspective view of an operating state of the damper device. FIG.

FIG. 14 is a sectional view corresponding to FIG. 2, illustrating a mounting state of the damper device shown in FIG. 13. FIG.

15 is a view showing an example of use of the second spring, wherein the perspective view of the damper device showing the wound state of the spring;

FIG. 16 is a cross-sectional view illustrating an attachment state of the damper device shown in FIG. 15.

FIG. 17 is a view corresponding to FIG. 15, illustrating a state in which elasticity of the spring is free; FIG.

FIG. 18 is a sectional view corresponding to FIG. 16, illustrating a mounting state of the damper device shown in FIG. 17. FIG.

FIG. 19 is a view corresponding to FIG. 15, showing a perspective view of an operating state of the damper device. FIG.

20 is a sectional view corresponding to FIG. 16, illustrating a mounting state of the damper device shown in FIG. 19.

Explanation of symbols for main parts of the drawings

10-Damper Unit 20-Housing

21-open side 30-door

40-Case 50-Shaft

60,70-Spring 61,62,71,72-End

80-viscous fluid 90-cylindrical part

91-bottom 92-opening

93-Hook 100-Attachment

101-Arm 110-Shaft Body

111-Hollow 112-Slit

113,114-Through Hole 120-Jaw

121-Necking 122-Base

123-protrusion 130-protrusion shaft

140,150,160-Protrusion 141,151,161-Slope

142,152,162-Hanging Surface

Each invention described in each claim of the present application has been made in order to achieve the above-described objects, and the features of each invention will be described in detail below using embodiments of the invention shown in the drawings.

In addition, in the drawings, reference numerals in parentheses indicate reference numerals used in the embodiments of the present invention, and do not limit the technical scope of the present invention. Reference numerals also denote reference numerals used in the embodiments of the present invention, and do not limit the technical scope of the present invention.

The invention described in claim 1 is characterized by the following points.

That is, between the case 40 and the shaft 50, for example, as shown in FIG. 1, any one side of at least two protrusions 140,150,160,160 is formed in each.

The two protrusions 140, 150, 160, 160 allow the shaft 50 to rotate in the other direction opposite to one direction, for example, as shown in FIG. 9, and rotate the shaft 50 in the other direction. At this time, for example, as shown in Figs. 7 and 8, it is for receiving the rotational force of the spring 60 at every predetermined angle (e.g., 180 degrees) by engaging each other.

The predetermined angle is not limited to 180 degrees but may be less than 180 degrees exceeding 0 degrees.

The invention described in claim 2 is characterized by the following three points in addition to the feature points of the invention described in claim 1 described above.

First, the case 40 has a cylindrical shape as shown in FIG. 3, for example. And the case 40 has the bottom part 91 which closed the one end part, and the opening part 92 which opened the other end part, for example as shown in FIG.

Secondly, the shaft 50 has a jaw portion 120 that closes the opening portion 92 of the case 40, for example, as shown in Figs.

Third, the two projections 140, 150, 160, 160 are positioned between the opening 92 of the case 40 and the jaw 120 of the shaft 50, respectively, as shown in FIG. The two projections 140, 150, 160, 160, for example, as shown in FIG. 1, form one side of at least two locking surfaces 142, 152, 162, 162, respectively. The two engaging surfaces 142, 152, 162, 162 are opposed to the axial direction of the shaft 50, and are engaged with each other as shown in FIG. 8, for example, to prevent the jaw 120 from falling out of the opening 92. will be.

The invention described in claim 3 is characterized by the following points in addition to the feature points of the invention described in claim 2 described above.

That is, grease is used as the viscous fluid 80.

The invention described in claim 4 is characterized by the following three points in addition to the feature points of the invention described in any one of claims 1 to 3.

First, the case 40 is fixed to the housing 20 having the open surface 21 as shown in FIG. 2, for example.

Secondly, the shaft 50 is fixed to the door 30 which is opened downward by its own weight and opens the open surface 21 of the housing 20, for example, as shown in FIG. 2.

Third, the spring 60 has a self-weight when the torque due to the viscous fluid 80 exceeds the torque due to the weight of the door 30 as shown in FIGS. 1 to 14, for example. The rotational force is imparted in the direction of opening downward.

The invention described in claim 5 is characterized by the following three points in addition to the feature points of the invention described in any one of claims 1 to 3.

First, the case 40 is fixed to the housing 20 having the open surface 21 as shown in FIG. 16, for example.

Secondly, the shaft 50 is fixed to the door 30 which is opened downward by its own weight and opens the open surface 21 of the housing 20, for example, as shown in FIG. 16.

Third, the spring 70 is a direction in which the door 30 is closed when the torque due to the viscous fluid 80 is less than the torque due to the weight of the door 30 as shown in FIGS. 15 to 20. To give the rotational force.

Embodiment of the Invention

1 to 20 show an example of an embodiment of the present invention.

1 is a partially exploded perspective view of the case and the shaft, FIG. 2 is a partial cross-sectional view showing the attachment state of the damper device, FIG. 3 is an exploded perspective view of the damper device, FIG. 4 is an exploded cross-sectional view of the damper device, FIG. 5 is a sectional view of the damper device, FIG. 6 is a side view of the damper device, FIG. 7 is a sectional view of the damper device, FIG. 8 is a partial perspective view of the case and the shaft as a view corresponding to FIG. 1, and FIG. 9 is a view corresponding to FIG. Each cross section is shown.

10 to 14 show examples of use of the first spring, respectively. FIG. 10 is a perspective view of the damper device, FIG. 11 is a sectional view showing the attachment state of the damper device shown in FIG. 10 as a view corresponding to FIG. 2, FIG. 12 is a perspective view showing a temporary winding state of the spring as a view corresponding to FIG. FIG. 13 is a perspective view showing an operating state of the damper device as a diagram corresponding to FIG. 10, and FIG. 14 is a sectional view showing an attachment state of the damper device shown in FIG. 13 as a diagram corresponding to FIG.

15 to 20 show examples of use of the second spring, respectively. 15 is a perspective view showing a damper device showing a wound state of the spring, FIG. 16 is a cross-sectional view showing the attachment state of the damper device shown in FIG. 15, and FIG. 17 is a view corresponding to FIG. FIG. 18 is a sectional view corresponding to FIG. 16 and showing a mounting state of the damper device shown in FIG. 17, FIG. 19 is a perspective view showing an operating state of the damper device as a view corresponding to FIG. 15, and FIG. 20 corresponding to FIG. 16. As shown in FIG. 19, sectional drawing which shows the attachment state of the damper apparatus shown in FIG. 19 is shown, respectively.

<Damper device (10)>

In the drawings, reference numeral 10 denotes a damper device.

As shown in Fig. 2, the damper device 10 is attached between a housing 20 in which switches such as a television are housed and a door 30 that opens and closes the open surface 21 thereof. Then, when the door 30 is opened while falling down by its own weight, the damper device is operated to prevent the door 30 from being opened hard.

The damper device 10 is composed of the following parts as shown in Figs.

1) Case (40)

2) shaft (50)

3) springs (60, 70)

4) viscous fluid 80 (see FIG. 5)

<Case 40>

The case 40 is fixed to the housing 20, and is integrally molded with synthetic resin such as ABS having a moderate degree of elasticity and rigidity.

The case 40 has the following corner parts as shown in FIG. 3 and FIG.

1) Tubular part (90)

The cylindrical portion 90 has a cylindrical shape as shown in Figs. 3 and 4, and has a bottom portion 91 that closes one end portion and an opening portion 92 that opens the other end portion.

As shown in FIG. 4, a pair of engaging pieces 93 and 93 protrude from the bottom portion 91 at intervals at which one ends 61 and 71 of the springs 60 and 70 are inserted. Then, as shown in FIG. 5, the one end portions 61 and 71 of the springs 60 and 70 are inserted into the gap between the pair of engaging pieces 93 and 93 to hold the springs 60 and 70 in a rotatable manner. do.

2) Attachment part 100

The attachment part 100 is equipped with the pair of arms 101 and 101 which protruded from the outer periphery of the cylindrical part 90 as shown in FIG. 3 and FIG. The case 40 is fixed to the housing 20 by inserting the pair of arms 101 and 101 into the mounting holes of the housing 20 using the elasticity of the resin.

<Shaft (50)>

The shaft 50 is fixed to the door 30, and is integrally molded from synthetic resin such as ABS having a moderate degree of elasticity and rigidity.

The shaft 50 has the following corner portions as shown in FIGS. 3 and 4.

1) shaft body 110

The shaft body 110 has a cylindrical shape as shown in FIGS. 3 and 4 and has an outer shape smaller than the inner diameter of the cylindrical portion 90 of the case 40.

The shaft body 110 has a hollow portion 111 with one end open as shown in FIG. 4.

In the closed bottom portion of the hollow portion 111, as shown in FIG. 4, the other end portions 62 and 72 of the springs 60 and 70 are formed with slit 112 into which they can be inserted. Then, as shown in FIG. 5, the other ends 62 and 72 of the springs 60 and 70 are inserted into the slit 112 to keep the springs 60 and 70 rotatable.

3 to 5, a plurality of through holes 113 and 114 penetrating in and out are formed around the shaft main body 110. As shown in FIG.

The through hole 113 on one side of the through holes 113 and 114 is located approximately at the center of the entire length of the shaft main body 110 as shown in FIGS. And, the through hole 114 of the other side of the through holes 113 and 114 is located in the jaw part 120 side mentioned later. Each through hole 113 and 114 opposes the radial direction of the shaft main body 110.

3 and 4, the jaw portion 120 is located midway along the entire length of the shaft 50 and protrudes in an annular shape from the outer circumference of the shaft main body 110.

Specifically, as shown in FIGS. 3 and 4, the jaw portion 120 includes a necking portion 121 that is concave in an annular shape adjacent to the shaft main body 110, and a proximal end portion 122 that is thicker than the necking portion 121. And an annular protrusion 123 protruding annularly from the base end 122.

The outer diameter of the base end 122 is set to be substantially equal to the inner diameter of the opening part 92 of the cylindrical part 90 as shown in FIGS. In addition, the outer diameter of the annular protrusion 123 is set to be substantially the same as the outer diameter of the cylindrical portion 90 as shown in Figs.

3) protrusion shaft (130)

As shown in FIGS. 3 and 4, the protrusion shaft 130 protrudes from the center of the annular protrusion 123 and forms a non-circular cross section. The protrusion shaft 130 is fixed to the door 30, and the door 30 rotates integrally with the shaft 50 with respect to the case 40 fixed to the housing 20.

<Springs (60, 70)>

As the springs 60 and 70, as shown in FIG. 3, two kinds of things different from a winding direction can be used.

The first spring 60 on one side of both springs 60 and 70 is a left hand coil, and both ends 61 and 62 are located in parallel.

On the other hand, the second spring 70 on the other side is a light hand coil, and both ends 71 and 72 are positioned in the direction orthogonal to each other.

Each end 61, 62, 71, 72 of the first and second springs 60, 70 has an inner space between the pair of engaging pieces 93 of the case 40 and the shaft 50 as shown in FIG. 5. Are inserted into the slits 112, respectively.

〈Viscous Fluids (80)〉

As the viscous fluid 80, for example, grease is used.

〈Protrusions 140,150,160,160）

Between the case 40 and the shaft 50, the projections 140, 150, 160, 160 are formed in each, as shown in FIG.

Specifically, in the opening portion 92 of the case 40, as shown in Figs. 1 and 7, two projections 140 and 150 protruding radially inward to face each other are formed.

As shown in FIG. 7, the two protrusions 140 and 150 have a substantially trapezoidal cross section when viewed from the opener 92 side.

Specifically, the two projections 140 and 150 are inclined in the circumferential direction as shown in Figs. Slightly inclined locking surfaces 142 and 152 are provided, respectively.

The two protrusions 140 and 150 are 180 degrees apart to form different shapes as shown in FIGS. 1 and 7.

That is, the locking surface 142 of the protrusion 140 located at the front side of the two protrusions 140 and 150 forms an inverse taper shape with respect to the longitudinal direction of the cylindrical portion 90, and the shaft 50 is Falling out of the opening part 92 of the case 40 is prevented.

On the other hand, at the base end 122 of the shaft 50, as shown in Figs. 1 and 7, two protrusions 160 and 160 protruding radially outward are formed, and both of the protrusions 160 and 160 are symmetrically separated by 180 degrees. It is shaped.

As shown in FIGS. 1 and 7, each of the protrusions 160 and 160 has a substantially parallelogram in cross section when viewed from the opener 92 side, and the inclined surfaces 161 inclined in the circumferential direction, and the inclined surfaces thereof. Located on the opposite side of the 161 and provided with a locking surface 162 slightly inclined in the opposite direction to each inclined surface (161).

1 and 7, the locking surface 162 faces the locking surface 142 of the protrusion 140 and has an inverse taper shape with respect to the axial direction of the shaft 50.

<Use example of the first spring 60>

An example of use of the first spring 60 will be described with reference to FIGS. 2 and 10 to 14.

First, as shown by the arrow in FIG. 10, the shaft 50 is rotated 180 degrees with respect to the case 40, and the 1st spring 60 is temporarily wound 180 degrees.

At the time of this temporary winding, as shown in FIG. 9, the inclined surfaces 161 and 161 of the protrusions 160 and 160 of the shaft 50 come into contact with the inclined surfaces 141 and 151 of the protrusions 140 and 150 of the case 40. Here, when the shaft 50 is rotated more strongly, the protrusions 160 of the shaft 50 push the protrusions 140 and 150 of the case 40 to the outside so that the opening 92 of the case 40 is elastically outward. It will deform. Accordingly, the protrusions 160 and 160 of the shaft 50 pass over the protrusions 140 and 150 of the case 40 as shown in FIG. 9, and the protrusions 160 and 160 of the shaft 50 as shown in FIGS. 7 and 8. Of the engaging surfaces 162 and 162 are engaged with the engaging surfaces 142 and 152 of the protrusions 140 and 150 of the case 40, so that the first spring 60 is temporarily wound 180 degrees.

As such, when the first spring 60 is attached to the state temporarily wound 180 degrees, the elasticity acts in the direction of opening the door 30 as indicated by the arrow in FIG. In this state, when the door 30 is closed as shown in FIG. 2, the shaft 50 is rotated 90 degrees with respect to the case 40 as shown in FIG. 12. Accordingly, the first spring 60 is wound 270 degrees plus 90 degrees and 180 degrees, and its elasticity acts in the direction of opening the door 30 as indicated by the arrow in FIG.

The door 30 is locked in the closed position shown in FIG. 2 by a latch or the like not shown. Then, when the lock is released, the door 30 is opened while falling down due to its own weight and elasticity of the first spring 60, as shown in FIG.

At this time, the damper effect is exerted by the shear resistance of the viscous fluid 80 so that the door 30 is quietly and slowly opened. At the same time, as the door 30 is opened, the shaft 50 is rotated 90 degrees with respect to the case 40 as indicated by the arrows in FIG. 13. Therefore, the wound state of the first spring 60 is released by 90 degrees and its elasticity is released by 90 degrees.

Since the elasticity of the first spring 60 acts in the direction of opening the door 30, when the torque due to the viscous fluid 80 exceeds the torque due to the weight of the door 30 itself, that is, the door 30 It is very suitable if it is light.

<Use example of the second spring 70>

An example of use of the second spring 70 will be described with reference to FIGS. 15 to 20.

First, as shown by the arrow in FIG. 15, the shaft 50 is rotated 90 degrees with respect to the case 40, and the 2nd spring 70 is wound up by 90 degrees.

Thus, when the 2nd spring 70 is attached in the state wound up by 90 degree | times, the elasticity acts in the direction which closes the door 30 as shown by the arrow in FIG. In this state, when the door 30 is closed as shown in FIG. 18, the shaft 50 is rotated 90 degrees with respect to the case 40 as shown in FIG. 17. When the shaft 50 is reversely rotated, the wound state of the second spring 70 is released and the elasticity is free.

The door 30 is locked in the closed position shown in FIG. 18 by a latch or the like not shown. Then, when the lock is released, the door 30 is opened while falling down by its own weight as shown in FIG.

At this time, the damper effect is exerted by the shear resistance of the viscous fluid 80 so that the door 30 is quietly and slowly opened. At the same time, as the door 30 is opened, the shaft 50 rotates 90 degrees with respect to the case 40, as indicated by the arrows in FIG. 19, whereby the second spring 70 gradually winds and torque is increased. As it occurs, the door 30 is opened quietly and slowly.

Since the elasticity of the second spring 70 acts in the direction of closing the door 30, when the torque due to the viscous fluid 80 is less than the torque due to the weight of the door 30 itself, that is, the door 30 Very suitable for heavy cases.

Since this invention is comprised as mentioned above, it has an effect as described below.

According to invention of Claim 1, it has the following effects.

That is, according to invention of Claim 1, elasticity can be adjusted.

According to invention of Claim 2, in addition to the effect of invention of Claim 1, it has the following effects.

That is, according to invention of Claim 2, a cap can be omitted.

According to invention of Claim 3, it has the following effects in addition to the effect of invention of Claim 2 mentioned above.

That is, according to the invention of claim 3, the O-ring can be omitted by using grease instead of the silicone oil.

According to invention of Claim 4, in addition to the effect of invention of Claim 1, the above-mentioned words of Claims 1-3 have the following effects.

That is, according to the invention of claim 4, even when the weight of the door itself is light, the damper effect can be obtained.

According to invention of Claim 5, it has the following effects in addition to the effect of invention of any one of said Claims 1-3.

That is, according to the invention of claim 5, even when the weight of the door itself is heavy, the damper effect can be obtained.

Claims (5)

A case; A shaft rotatably held within said case; A spring, one end of which is fixed to the case and the other end of which is fixed to the shaft, for imparting a rotational force in one direction to the shaft with respect to the case by a restoring force of the spring being wound; A damper device enclosed in the case and having a viscous fluid for generating rotational resistance by rotation of the shaft relative to the case; Between the case and the shaft, two protrusions are formed on each of the case and the shaft to allow rotation of the shaft in one direction, and to engage each other when the shaft is rotated in the other direction to receive the rotational force of the spring at a predetermined angle. Damper device characterized in that. The method according to claim 1, The case has a cylindrical shape, and has a bottom for closing one end and an opening for opening the other end. The shaft has a jaw to close the opening of the case, The two projections are located between the opening of the case and the jaw of the shaft, respectively, and at least two of the projections opposed to and engaged with each other in the axial direction of the shaft to prevent the jaw from falling out of the opening. Damper device characterized in that the engaging surface is formed on the case and the shaft, respectively. The method according to claim 2, A damper device, characterized in that grease is used as the viscous fluid. The method according to any one of claims 1 to 3, The case is fixed to the housing having an open surface, The shaft is fixed to a door that opens downward by its own weight to open the open surface of the housing, And the spring is configured to impart the rotational force in a direction in which the door opens downward by its own weight when the torque due to the viscous fluid exceeds the torque due to its own weight. The method according to any one of claims 1 to 3, The case is fixed to the housing having an open surface, The shaft is fixed to the door that is opened downward by its own weight to open the open side of the housing, And the spring is configured to provide the rotational force in a direction in which the door is closed when the torque due to the viscous fluid is less than the torque due to the weight of the door.