JP4209248B2 - Damper device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a damper device for shock reduction (motion damping) having a simple buffer adjusting means.
[0002]
[Prior art]
As is well known, a damper having a buffer function is used in various technical fields. Dampers are also used effectively when doors, doors, lids, etc. are closed safely and quietly. By the way, in the type of sliding door device that closes by its own weight, a telescopic damper mainly composed of a cylinder and a piston is mounted on the upper rail. In the case of this specific example, the buffering effect of the damper is given to the sliding door in the stage before reaching the complete closing state, so that the final sliding door closing operation is calmed (for example, see Patent Documents 1 and 2).
[0003]
Even in a single door type door device, a telescopic damper is attached to the inner surface of the door opening frame and the like, and a damper function is achieved at the final stage of door closing (see, for example, Patent Document 3).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 03-253681 [Patent Document 2]
JP-A-11-002066 [Patent Document 3]
Japanese Utility Model Publication No. 55-006315
[Problems to be solved by the invention]
When closing doors, doors, lids, etc., large inertia works for large or heavy objects, while inertia decreases for small or light objects. Therefore, it is necessary to select a model according to each application and scale as the damper. However, it is not easy to prepare various kinds of dampers assuming individual applications, and the burden is large.
[0006]
On the other hand, dampers that deal with the above have been developed. That is, the buffering force can be adjusted. This model is desirable because of its versatility, and a single model can accommodate many applications. However, the adjustable damper has a complicated structure to add such a function, and the cost is unavoidable.
[0007]
OBJECT OF THE INVENTION
In view of the above technical problems, the present invention is intended to provide a damper device having a stable adjustment function in a simple and inexpensive manner.
[0008]
[Means for Solving the Problems]
The damper device according to claim 1 of the present invention is characterized by the following problem solving means in order to achieve the intended purpose. That is, the damper device according to claim 1 is provided with a shock-absorbing damper, a shock-transmitting rotating body, and a component-attaching base, and the damper has an operation portion. The rotating body has a contact response section that can contact the operation section of the damper, a buffer response section that can receive an impact force, and an adjustment section that adjusts the rotation radius of the buffer response section; and The base has a holding portion for holding the mounting member and a mounting portion for mounting the rotating body, and the damper is held by the holding portion of the base in a relative relationship between the damper and the base, and In the relative relationship between the rotating body and the base, the rotating body is rotatably attached to the mounting portion of the base, and in the relative relationship between the damper and the rotating body on the base. Wherein the touch responsive portion of the rotating body in which contact with the operating portion of the damper.
[0009]
The damper device according to a second aspect of the present invention is the damper device according to the first aspect, wherein the adjusting portion in the rotating body is composed of a fulcrum adjusting hole, and the rotating body is a base mounting portion through a fulcrum member penetrating the fulcrum adjusting hole. It is characterized in that it is rotatably attached to.
[0010]
A damper device according to a third aspect of the present invention is the damper device according to the second aspect, wherein the rotating body includes a contact response member having a contact response portion and a buffer response member having a buffer response portion. In addition, a fulcrum adjustment hole is formed in the buffer response member, the contact response member is rotatably attached to the base via the fulcrum member, and the contact response member via the fulcrum member The buffer response member is fixed to each other.
[0011]
A damper device according to a fourth aspect of the present invention is the damper device according to the second or third aspect, wherein the fulcrum adjusting hole is a single long hole.
[0012]
[Action]
Since the damper device of the present invention has a self-evident buffering action and a buffering effect, it can be applied to various uses for buffering purposes. For example, if it is a countermeasure against an impact when the moving body collides with the fixed body, the damper device of the present invention may be provided on one of the collision portions. For example, the damper device is attached to the collision part on the fixed body side.
[0013]
In the above example, when a moving body moving in a predetermined direction tries to collide with the fixed body, the collision portion of the moving body hits the rotating body of the damper device before the collision occurs. After that, since the moving body moves to the fixed body side, the free end of the rotating body is pushed to the fixed body side. The damper against this, while being deformed by the pushing force of the moving body, supports the rotating body from the opposite side and resists the pushing force of the moving body. This resistance continues. Therefore, the moving body receives a damper resistance from the time when it hits the rotating body, and finally stops while moving quietly toward the fixed body by the buffering action from this time.
[0014]
In the damper device of the present invention, the rotating body has a fulcrum through a fulcrum member, and the contact response portion on the rotation free end side is in contact with the operation portion of the damper. In such a damper device, when the rotating body that has received an impact on the shock response portion rotates and pushes the operation portion of the damper on the contact response portion side, the above-described damper resistance is generated and the shock absorbing action occurs. . In this case, if the damper capacity (resistance force) relative to the moment of the rotating body is small, the damper effect is insufficient. Conversely, when the damper capacity relative to the moment of the rotating body is large, the damper effect becomes excessive. However, for the rotating body of the present invention, the distance (length) from the fulcrum to the buffer response section can be adjusted. This means that the moment of the rotating body can be adjusted. Therefore, when the damper capacity is relatively small, the distance of the rotating body may be shortened to reduce the rotational moment, and when the damper capacity is relatively large, the distance of the rotating body is increased to increase the rotational moment. do it. By adjusting in this way, there is no excess or deficiency of the damper capacity, and the damper device has an appropriate damper action effect.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a damper device according to the present invention will be described with reference to the accompanying drawings.
[0016]
1 to 5, reference numeral 11 denotes a damper, 21 denotes a rotating body, 31 denotes a fulcrum member, and 41 denotes a base.
[0017]
The structure of the damper 11 illustrated in FIGS. 1 to 5 can be well understood when FIG. 5 is referred to. The damper 11 in the illustrated example includes a cylinder 12, a piston head 15, a piston rod 17, a spring 18, and the like as constituent parts (constituent members), and the piston head 15 is formed with a small-diameter flow hole 16. As is well known, the piston head 15 is interposed in the cylinder 12 and makes a stroke motion. The cylinder 12 in which the piston head 15 is housed is divided into two chambers 13 and 14 with the piston head 15 as a boundary, and both chambers 13 and 14 communicate with each other through a flow hole 16 of the piston head 15. In the case of the spring 18 housed in one chamber 13 of the cylinder 12, a unidirectional force is applied to the piston head 15 along the cylinder axial direction. The piston rod 17 is attached to and integrated with the piston head 15 and protrudes from one end of the cylinder 12 to the outside of the cylinder. A short sleeve 19 is attached to the tip of the piston rod 17 to increase its diameter. In the case of the damper 11 in the illustrated example, as an example, the piston rod 17 serves as the operation portion of the damper 11. The components of the damper 11 are made of metal or synthetic resin molded products or processed products, but some parts may be made of metal and other parts may be made of synthetic resin. As an example, an embodiment in which the cylinder 12 and the sleeve 19 are made of synthetic resin, and the piston head 15, piston rod 17, spring 18 and the like are made of metal can be cited.
[0018]
With reference to FIGS. 1 to 4, the main components constituting the rotating body 21 are a contact response member 22 and a buffer response member 27. The contact response member 22 is formed by bending an elongated strip into a substantially U shape as shown in FIGS. Therefore, the contact response member 22 appears to have two pieces connected to the bent portion. One of them is provided with a screw hole 23 and a protruding engagement portion 24 is also formed. The other piece of the contact response member 22 has a shaft hole 25 and two contact response portions 26 that are bent at right angles from both sides of the end portion toward the surface side. The screw hole 23 and the shaft hole 25 in the contact response member 22 have a coaxial relationship sharing one axis. The buffer response member 27 is also made of a strip, but this is a straight one. The buffer response member 27 is formed with an elongated fulcrum adjustment hole 28 along the length direction thereof. The buffer response member 27 has a buffer response portion 29 on either one of both side surfaces thereof. The contact response member 22 and the buffer response member 27 which are main parts of the rotating body 21 are also made of a molded product or processed product made of metal or synthetic resin, but one component is made of metal and the other component is made of synthetic resin. There is also. As an example, an embodiment in which the contact response member 22 is made of metal and the buffer response member 27 is made of synthetic resin can be cited.
[0019]
1 to 4, the fulcrum member 31 includes a screw shaft 33 having a head portion 32. In this case, the screw shaft 33 has an outer diameter that can pass through the shaft hole 25 and the fulcrum adjusting hole 28, but the screw shaft 33 forms a pair in the relative relationship with the screw hole 23. There is a relationship between male screw and female screw. The fulcrum member 31 is made of metal as a representative example. As will be described later, the fulcrum member 31 is for assembling the contact response member 22 and the buffer response member 27 of the rotating body 21 or attaching them to the base 41.
[0020]
The base 41 illustrated in FIGS. 1 to 5 serves as a damper fixed seat or a rotating seat. The base 41 is a planar structure and is symmetrical when viewed as a whole. However, when viewed partially, the base 41 is bent, protrudes, or has a hole. In one of them, the damper holding portion 42 on the upper back surface of the base 41 is formed by folding the upper side of the base 41 to the back surface side and bending it further downward. The holding portion 42 having such a shape structure has open both end surfaces and a lower surface of the holding space (internal space). Screw holes 43a and 43b are formed at locations corresponding to both ends of the holding portion 42 in the base 42, and a stopper 44 made of a screw is screwed into one of the screw holes 43a. The stopper 44 provided on one end surface side of the holding portion 42 can also be referred to as a wall of the holding portion 42. A bumper 45 having a cushioning property is provided on the inner surface of the upper wall of the holding portion 42. The base 41 also has attachment portions 46 a and 46 b that protrude upward from the upper sides on both sides of the holding portion 42. Support holes 47a and 47b for supporting the fulcrum member 31 are formed in both attachment portions 46a and 46b. In addition, there is a seat portion 48 bent horizontally toward the back side at the lower portion of the base 41. A plurality of screw holes 49 are formed in the seat portion 48, and bolts 50 having no heads are screwed into these. An opening 51 that is long in the left-right direction is formed in the center of the plate surface of the base 41. The base 41 is also made of metal or synthetic resin, and a typical example is made of aluminum. The bumper 45 is made of soft rubber or soft urethane resin. Furthermore, screws, screws, bolts, etc., which are accessories of the base 41 are often ready-made products made of metal.
[0021]
In FIG. 1 to FIG. 2, what is indicated by a two-dot chain line (virtual line) is a bumper 52 for buffering attached to one side edge of the base 41. Since the bumper 52 has an elongated groove for receiving the edge of the base 41 on the mounting surface, the bumper 52 can be mounted on one side edge of the base 41 through the groove. The bumper 52 is also made of soft rubber or soft urethane resin.
[0022]
In FIG. 3, what is indicated by a two-dot chain line (virtual line) is a known slide rail 62 held by a long holder 61 made of synthetic resin. The slide rail 62 is composed of a metal outer rail, inner rail, ball, retainer, and the like, and the outer rail and the inner rail slide and extend in the length direction thereof. The holder 61 holds and holds such a slide rail 62 inside.
[0023]
An example of assembling the above-described damper 11 and rotating body 21 to the base 41 is as follows with reference to FIGS. 1 to 4. With respect to the damper 11, the piston rod 17 faces the left in FIG. 1. The rotating body 21 is assembled using the mounting section 46a of FIG. First, in the case of the damper 11, this is fitted into the holding portion 42 of the base 41 and held here. Specifically, as shown in FIG. 3, the damper 11 is held in the holding portion 42 through the holder 61 of the slide rail 62. In this damper assembly, the circumferential surface of the cylinder 12 is in contact with the inner surface of the holding portion 42 and the upper surface of the holder 61, and the rear end surface of the cylinder 12 is in contact with the stopper 44, but the piston rod 17 of the damper 11, Eleven operation portions ”protrude out of the holding portion 42. In the case of the rotating body 21, the contact response member 22 and the buffer response member 27 are combined prior to assembly to the base 41. Referring to FIG. 4, it is assumed that the screw hole 23 of the contact response member 22 and the fulcrum adjustment hole 28 of the buffer response member 27 are aligned with each other, and the engagement portion 24 of the contact response member 22 is the buffer response member 27. After the two members 22 and 27 are overlapped so as to be fitted into the fulcrum adjustment hole 28, the screw shaft 33 of the fulcrum member 31 is inserted into the fulcrum adjustment hole 28 of the buffer response member 27 and the contact response member 22 is inserted. The screw hole 23 is screwed. At this stage, the tip of the screw shaft 33 screwed into the screw hole 23 is prevented from protruding into the U-shaped space of the contact response member 22. Next, the U-shaped portion of the contact response member 22 is placed on the mounting portion 46a of the base 41, and the mounting portion 46a is interposed in the U-shaped space. If this is the case, the tip of the screw shaft 33 of the fulcrum member 31 is aligned with the support hole 47a of the mounting portion 46a, and then the screw shaft 33 is tightened to the screw hole 23 to the end. As a result, the screw shaft 33 of the fulcrum member 31 passes through the support hole 47a and reaches the shaft hole 25 of the contact response member 22, so that both the members 22 and 27, that is, the rotating body 21 can be rotated by the mounting portion 46a of the base 41. Supported. At the same time, the members 22 and 27 are also firmly fixed by the tightening force of the screw shaft 33 against the screw hole 23. Thus, when the damper device is assembled as shown in FIGS. 1 to 4, the operation portion (piston rod 17) of the damper 11 and the contact response portion 26 of the rotating body 21 are in relative contact as shown in FIG. 2.
[0024]
The damper device according to the above embodiment is used by being attached to the collision surface of the fixed body and / or the collision surface of the movable body, for example, when the moving body collides with the fixed body. In this example, when the collision force F of the moving body acts in the right direction from the left side in FIG. 1, the damper device reduces the impact as follows in cooperation with the rotating body 21 and the damper 11.
[0025]
In FIG. 1, when a collision force F acts on the buffer response portion 29 of the rotating body 21, the rotating body 21 is pushed counterclockwise by being pressed by the force. At this time, in the rotating body 21, the contact response portion 26 is in contact with the operation portion (piston rod 17) of the damper 11. Therefore, when the rotating body 21 receives the collision force F and rotates, the operation part of the damper 11 is pushed in via the contact response part 26. As a result, the piston head 15 in the cylinder 12 tends to move to the right in FIG. However, the piston head 15 receives the collision force F because the flow rate per unit time of the fluid flowing from the chamber 13 side to the chamber 14 side via the flow hole 16 is small and also receives the compression resistance of the spring 18. It moves slowly and stops after a predetermined amount of stroke movement. Thus, the impact when the collision force F acts is alleviated. In addition, about the damper 11 when an external force does not act, since the piston head 15 returns to an original position with the restoring force of the spring 18, other each part also returns to an original state.
[0026]
In the above, when adjusting the buffering capacity of the damper device according to the magnitude of the collision force F, the rotation radius of the buffering response member 27 in the rotating body 21 (the length from the fulcrum member 31 to the tip of the buffering response unit 26) is set. Moderate. Incidentally, when the rotational radius of the buffer response member 27 is shortened, the rotational moment is reduced, and a large force is required for the damper operation. This means that it should be done when relieving a large impact. Conversely, when alleviating a small impact, it is only necessary to increase the rotational moment by increasing the rotational radius of the buffer response member 27. When adjusting the rotation radius of the buffer response member 27, the screw shaft 33 of the fulcrum member 31 fastened to the screw hole 23 of the contact response member 22 is once loosened, and then the buffer response member 27 is moved to the length of the fulcrum adjustment hole 28. Slide along the direction, and then tighten the screw shaft 33 again.
[0027]
The damper device of the illustrated example corresponds to when an impact force is applied from the left direction in FIG. On the contrary, when an impact force is applied from the right direction in FIG. 1, the damper 11 is assembled in the holding portion 42 of the base 41 in the direction opposite to that shown in the drawing, and the rotating body 21 also uses the mounting portion 46b. Can be assembled to the base 41. In this way, it is possible to cope with impact force in the right direction.
[0028]
FIG. 6 shows an example in which the damper device of the present invention is applied for buffering a sliding door. In this case, the slide rail 62 held by the holder 61 is attached to the upper part of the entrance / exit opening by known attachment means. The sliding door 64 is connected to the inner rail of the slide rail 62 via a fixed holder 63 and a hanging member 65. On the other hand, the damper device of the present invention is equipped as shown in FIG.
[0029]
The sliding door 63 in FIG. 6 opens leftward or closes rightward. However, since the above-described damper effect is produced at the final stage when the sliding door 63 is closed, the sliding door closing operation is quiet. Can be done.
[0030]
The damper device of the present invention can be applied not only to shock reduction when closing a door or door, but also to shock reduction when closing a lid. Further, it can be used for buffering by attaching to a collision surface such as when the mobile bodies collide with each other or when the mobile body collides with the fixed body. Therefore, the application range of the damper device of the present invention is diverse, such as furniture, architecture, and machinery.
[0031]
The damper device of the present invention also has the following embodiment. As for the base 41, the lower surface of the holding portion 42 is opened assuming that the base 41 is fitted into the holder 61. However, in other cases, the holding portion 42 having the lower wall 42a as shown by an imaginary line in FIG. 4 may be used. . The fulcrum adjustment hole 28 formed in the impact response member 27 of the rotating body 21 is preferably a long hole (illustrated example) in which the slide adjustment of the member 27 is possible. It may be composed of a plurality of circular holes formed in a dotted manner along the length direction.
[0032]
The rotating body 21 and the fulcrum member 31 may be the one illustrated in FIG. The rotating body 21 is formed of a single elongated member, and both side surfaces are used as a contact response unit 26 and a buffer response unit 29. The fulcrum member 31 has a cylindrical head portion 32 in which the rotating body 21 can be slidably inserted. The rotating body 21 fitted in the cylindrical head portion 32 of the fulcrum member 31 can be fixed with a screw 34 screwed into the head portion 32. The fulcrum member 31 of FIG. 7 is rotatably attached to a predetermined portion of the base 41 by a known means. As for the rotating body 21, a plurality of pieces connected so as to be extendable in the length direction by means of a lap joint expansion / contraction means using a screw and a long hole, a fitting expansion / contraction means between pipes or a pipe and a shaft, and the like. Long members are fine. The rotating body 21 may be composed of an eccentric cam or other cams. The rotating radius of the cam-made rotating body 21 can be adjusted by fixing the eccentric amount of the rotating body 21.
[0033]
In the case of the damper 11 as shown in the drawing, the cylinder 12 may be filled with other viscous fluid such as oil. Further, the damper 11 is mainly composed of a spring, rubber, plastic, hollow body, etc., and various types can be adopted as long as it has elasticity or restoring force. Some examples are shown in FIG. Among them, the one shown in FIG. 8A is configured mainly with a spring. The structure shown in FIG. 8B is mainly composed of a stretchable and recoverable hollow body (made of rubber, plastic, metal, etc.). The structure shown in FIG. 8C is mainly composed of a deformable and recoverable elastic body (such as rubber or plastic).
[0034]
【The invention's effect】
The damper device according to the present invention has the following effects. One is that the damper capacity can be easily adjusted according to the conditions of use and the convenience is high, and the other is that the stability of the adjustment state is obtained because only the turning radius of the predetermined part of the rotating body is adjusted. Still another one is that the apparatus cost can be considerably reduced because the configuration is very simple.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a damper device of the present invention.
FIG. 2 is a rear view showing an embodiment of the damper device of the present invention.
FIG. 3 is a side view showing an embodiment of the damper device of the present invention.
FIG. 4 is a cross-sectional view showing an embodiment of the damper device of the present invention.
FIG. 5 is a cross-sectional view showing a damper in the damper device of the present invention.
FIG. 6 is a front view schematically showing an example of use of the damper device of the present invention.
FIG. 7 is a perspective view showing another example of a rotating body and a fulcrum member in the damper device of the present invention.
FIG. 8 is a cross-sectional view showing another example of a damper in the damper device of the present invention.
[Explanation of symbols]
11 Damper 17 Piston rod (operation part of damper)
21 Rotating Body 22 Contact Response Member 26 Contact Response Portion 27 Buffer Response Member 28 Support Point Adjustment Hole 29 Buffer Response Portion 31 Support Point Member 41 Base 42 Holding Portion 46a Mounting Portion 46b Mounting Portion

Claims (4)

It is provided with a damper for shock absorption, a rotating body for shock transmission, and a base for mounting parts, and the damper has an operation part, and contact that allows contact with the operation part of the damper. The rotating body has a response section, a buffer response section that can receive impact force and an adjustment section for adjusting the rotation radius of the buffer response section, and a holding section and a rotating body for holding a damper. The base has an attachment portion for attaching the damper, the damper is held by the holding portion of the base in the relative relationship between the damper and the base, and the relative relationship between the rotating body and the base , The rotating body is rotatably attached to the mounting portion of the base, and in the relative relationship between the damper and the rotating body on the base, the contact response portion of the rotating body is the operation portion of the damper. Damper device characterized in that those contact. The damper device according to claim 1, wherein the adjusting portion of the rotating body includes a fulcrum adjusting hole, and the rotating body is rotatably attached to the mounting portion of the base via a fulcrum member penetrating the fulcrum adjusting hole. The rotating body is composed of a contact response member having a contact response portion and a buffer response member having a buffer response portion, and a fulcrum adjustment hole is formed in the buffer response member. The damper device according to claim 2, wherein the member is rotatably attached to the base via a fulcrum member, and the contact response member and the buffer response member are fixed to each other via the fulcrum member. . 4. The damper device according to claim 2, wherein the fulcrum adjusting hole is a single long hole.

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