JP3044010B2 - Rotary damper mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cover for a cassette lid, a knob for a television, and other rotary parts, and a rotary damper mounted on a sliding part for braking the rotation thereof.

[0002]

2. Description of the Related Art In a rotary damper of this type, as disclosed in Japanese Utility Model Application Laid-Open No. 7-35838, a rice cake-like viscous solid such as urethane gel or silicon gel is used as a braking member in a dish-shaped housing. Filled, a braking plate portion is embedded in the braking member, and a rotary damper body covered with a cap is configured to connect a pinion to a rotor protruding from the center of the braking plate portion to output braking. Are known. The rotary damper body has a structure in which a mounting bracket is protruded.

This rotary damper can brake and hold the lid or the like at a desired rotation angle with a braking resistor by engaging the pinion with a rack provided on the cassette lid or a knob of a television or the like. In the rotary damper, a mounting bracket is projected from the rotary damper main body, and a mounting portion such as a mounting hole is formed in the mounting bracket, and a cassette, a television, and other mounted portions on which the lid is opened and closed are mounted on a mounted portion on the main body side. It is attached with its attachment part.
If the number of the mounting brackets is one and the number of the mounting portions is one, if the rotary damper main body is not pressed during screwing or the like, the rotary damper main body is rotated. Therefore, mounting brackets are protruded from the rotary damper main body in positions opposite to each other, and mounting holes are opened as mounting portions in each of the mounting brackets. When tightening one mounting hole with a screw, the other screw is used. In the state of temporary fixation,
After complete tightening, the screws in the temporarily fixed state are fully tightened and fixed.

Incidentally, the engagement of the pinion with a rack attached to a cassette lid, a knob of a television, or the like may not be satisfactory due to a molding error, an error in the position of a screw hole provided in a main body, or the like. The rotary damper must be able to modify its mounting position (installation position). However, in the case of the prior art, the screw for preventing the rotation damper main body from being twisted is only fully tightened, and the mounting position cannot be corrected. To make this possible, both screws must be screwed in while maintaining a balance, but this not only limits the correction but also wastes time and effort.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional circumstances, and an object thereof is to provide a novel rotary damper mounting structure which can be easily mounted and whose mounting position (installation position) can be modified. is there.

[0006]

According to the technical means taken to achieve the above object, a mounting bracket is projected from a rotary damper main body, and the rotary damper main body is firmly attached to a portion to be mounted. The mounting bracket is formed so that the portion close to the rotary damper body is divergent from the vicinity of the mounting portion so that both side edges are tangential to the outer peripheral surface of the rotary damper body. In the direction opposite to the mounting bracket forming position of the rotary damper main body, a fixing bracket is protruded, and abuts against a countersunk screw screwed and implanted in the mounting portion to be mounted by screwing the mounting screw at the mounting portion. The rotation damper body is finely adjusted to a predetermined position by contacting the countersunk screw with the flat head under the head, which prevents the rotation damper body from twisting around and adjusts the degree of protrusion from the mounting part by screwing. Selectable plurality of recesses to fix installed at the predetermined position is the gist that it is recessed in the edges as well as.

According to the above technical means, the following effects are obtained. In this rotary damper mounting structure, the rotary damper main body is mounted on the mounted portion by screwing a mounting portion provided with one mounting bracket protruding from the rotary damper main body on a mounting screw. At the time of screwing and fastening, the lower inclined surface of the head of the countersunk screw screwed into the mounted portion abuts the concave portion of the fixed bracket to prevent the rotary damper from rotating. In detail, considering the molding error of the rotary damper itself, the error of the drilling position of the screw hole provided on the part to be mounted, etc., a plurality of recesses of the fixing bracket so that the pinion and the rack have a good meshing relationship. Select one of the recesses from the list and contact the flathead screw. As a result, the rotary damper is corrected to a predetermined position where the pinion and the rack satisfactorily mesh with each other according to the situation at that time. Since the plurality of recesses are recessed at the edge of the mounting bracket, the size does not increase as in the case where holes are used as the mounting portions. In addition, in this rotary damper mounting structure, the mounting bracket is formed in a divergent shape near the mounting portion near the rotary damper main body, and both side edges are tangentially connected to the outer peripheral surface of the rotary damper main body. A wide rib portion is formed at a portion connected to the main body, and the strength of the mounting bracket is secured by the wide rib portion, thereby forming a firm mounting portion. In this rotary damper mounting structure, the countersunk between the lower inclined surface of the flat head of the flat head screw and the recess of the fixed bracket is rotated to a predetermined position by adjusting the degree of protrusion of the flat head screw from the part to be mounted by screwing. Fine-tune the mounting position (installation position) of the damper body.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show a rotary damper according to the present embodiment. Reference numeral A is a rotary damper main body, B is a mounting bracket, C is a fixing bracket, 7 is a concave portion, 8 is a mounting portion, 9 is a flathead screw, and 10 is a mounting screw.

The mounting bracket B will be described with reference to FIGS. 1 to 4. The mounting bracket B projects from the rotary damper main body A, has a plate-like shape having an arc edge a, and is firmly attached to the mounting portion. The two side edges of the arc edge a are tangentially connected to the outer peripheral surface of the rotary damper main body A to form a wide rib portion b at a position close to the rotary damper main body, and the mounting bracket is provided. At B, a mounting portion 8 which is a mounting hole is formed.

Next, the fixing bracket C will be described. The fixing bracket C projects in the direction opposite to the position where the mounting bracket B of the rotary damper body A is formed.
Has a small and short plate-like shape, and a plurality of recesses 7,
In detail, a total of three concave portions 7 are formed, one at each edge, and have a drum-shaped plate shape. Then, the flattened screw 9 screwed into the mounting portion is brought into contact with the countersunk screw 9 and the mounting portion 8 is mounted on the mounting portion by screwing the mounting screw 10 to prevent the rotary damper main body A from rotating along with the mounting, A plurality of selectable concave portions 7 for finely adjusting the rotary damper body A to a predetermined position and correcting and installing the rotary damper body A at the predetermined position are provided at the edge.

The mounting bracket B, the fixing bracket, and the countersunk screw 9 are used for firmly mounting a cassette, a television, and other rotating parts and sliding parts for opening and closing a lid to be attached to the apparatus body side. is there. The recess 7
May be provided adjacent to each edge.

The rotary damper main body A includes a dish-shaped housing 1.
And a braking plate 2, a cap 3, an O-ring 4, a rice cake-like viscous member 5, and the like.

The dish-shaped housing 1 has a circular bottom 11,
A cylindrical portion 21 erected from the periphery of the bottom portion 11;
And a fixed shaft portion 31 standing up from the center of the shaft.

The braking plate 2 has an inner dimension (inner diameter) of the cylindrical portion 21.
The rotor shaft 12 is formed to have a slightly shorter length than the rotor shaft 12, and its plan view shape is a fan shape in plan view protruding radially from the base of the rotor shaft 12 to a symmetrical portion, or an oval shape in plan view, or the cylindrical portion. It has a three-pronged blade shape in a plan view in which the rotation miracle is slightly smaller in diameter than the inner size (inner diameter) of 21. The brake plate 2 has a rotor shaft 12 whose bottom is provided with a loose fitting concave portion 12a for loosely fitting the fixed shaft portion 31 of the dish-shaped housing 1 from the center.

The cap 3 has a recess 13 for accommodating the dish-shaped housing 1, and a top 13 of the recess 13.
a, a take-out port 23 through which the rotor shaft 12 is inserted is opened, and a locked portion 41 is formed on the inner surface of the housing recess 13 to be locked with a locking portion 41 formed on the outer peripheral portion of the cylindrical portion 21 of the dish-shaped housing 1. Part 33
When the locked portion 33 is integrally engaged with the locking portion 41, the braking plate portion 2 is formed by the dish-shaped housing 1 in which the braking plate portion 2 is rotatably stored and the receiving recess 13 of the cap 3. It constitutes a braking space 2 '.

A pinion 6 is coaxially connected to the rotor shaft 12.

The damping space 2 'is filled with a sticky viscous member 5 such as urethane gel or silicon gel.

The O-ring 4 is housed in an annular recess 43 provided with a take-out port 23 in the rotor shaft 12 at the top 13a of the cap 3 as shown in the figure, so that the rice cake-like viscous solid 5 does not protrude. It is in close contact with the brake plate 2 and rotatably holds the brake plate 2 and the rotor shaft 12.

The rotary damper thus configured is mounted on a mounting portion on the side of the device main body such that a cassette lid, a knob for a television (not shown) and the like are opened or closed by rotating or sliding.

In mounting the rotary damper to the mounting portion on the equipment body side, as shown in FIG. 2, a mounting screw 10 is mounted on a mounting portion 8 such as a mounting hole formed in a mounting bracket B from which the rotary damper body A protrudes. It is inserted and screwed to the part to be mounted. At this time, the rotation damper main body A is turned around by the screwing rotation of the mounting screw 10. However, a countersunk screw 9 is screwed and implanted in advance in the mounting portion on the device body side, and the countersunk screw 9 is attached to the rotating damper body A.
When the fixing bracket C protrudes from the recesses, the recesses 7 are hung to prevent the rotation.

In detail, the recess 7 selected from the plurality of recesses 7 comes into contact with the flathead screw 9. In this way, the rotation is prevented, and the pinion 6 and the rack are well engaged with each other in consideration of a molding error of the rotary damper itself, a hole position error such as a screw hole provided on the mounting portion side, and the like. To this end, the concave portion 7 is selected, and the rotary damper is corrected to a predetermined position according to the situation at that place.

Therefore, since the engagement between the pinion 6 and the rack is improved, the countersunk screw 9 hooked on the recess 7 must be used in order to precisely and securely mount the pinion 6 on the mounting portion. By adjusting the degree of projection from the mounting portion by screwing and implanting, the contact position between the lower inclined surface of the flat head screw 9 and the concave portion 7 of the fixed bracket C is finely adjusted. (Installation position) will be fine-tuned.

Accordingly, the rotation damper main body A is mounted on the rotor by virtue of the high viscosity of the viscous member 5 having the property of being stirred and merged by the brake plate portion 2 due to the rotation of the rotor enclosed in the interior. The rotation is braked, and the lid and the like can be maintained at a desired rotation angle (opening angle).

[0024]

The present invention has been configured as described above.
A mounting portion is formed on a mounting bracket projecting from the rotary damper main body, and a plurality of selectable concave portions are provided in a direction opposite to a mounting bracket forming position of the rotary damper main body to abut against a flathead screw of the mounted portion. It is possible to prevent twisting, correct and change to a predetermined position, and perform fine adjustment, and correct and finely adjust the predetermined position quickly and easily. Therefore, the molding error of the rack etc. attached to the lid,
Even if an error such as a drilling position error occurs in the screw-in hole as the mounting portion, the error is absorbed and the pinion can be brought into a predetermined good engagement relationship with the rack or the like. In addition, since the fixing bracket forms a concave portion using the edge, the fixing bracket is made smaller (compact) compared to the mounting using the mounting hole, and it is prevented from turning around and corrected and set to a predetermined position. It is possible to make fine adjustments, and it is suitable for installation including correction setting and fine adjustment in the installation part where the installation area is limited, and one of the mounting brackets forms the part near the rotary damper body from the vicinity of the mounting part in a divergent shape The rigid attachment portion can be formed by securing the strength by the wide rib portion. Furthermore, if a countersunk screw is used at the position where it comes into contact with the fixing bracket, the contact between the inclined surface of the head and the recess of the fixing bracket can be finely adjusted to a predetermined position by adjusting the degree of tightening of the countersunk screw. Thus, the correction setting can be performed with higher accuracy, the meshing of the pinion with the rack or the like can be made more suitable, and the durability of the rotary damper can be increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rotary damper.

FIG. 2 is a front view showing an attached state, in which only a screw hole is shown on the attached portion side.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 2;

FIG. 4 is a front view showing an attached state positioned by a central positioning portion.

[Explanation of symbols]

A: Rotary damper body B: Mounting bracket
C: Fixing bracket 7: Recess 8: Mounting part 9: Countersunk screw 10: Mounting screw

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) F16F 9/12-9/14 G11B 15/675 G11B 33/02 E05F 3/14

Claims (1)

(57) [Claims] 1. A mounting bracket protrudes from a rotary damper main body, and the mounting bracket has a mounting portion for firmly fastening the rotary damper main body to a mounted portion, and the mounting bracket is provided for firmly tightening. The bracket is formed so that the part near the rotary damper body is divergent from the vicinity of the mounting part, and both sides are connected tangentially to the outer peripheral surface of the rotary damper body, and fixed in the direction opposite to the mounting bracket formation position of the rotary damper body projecting the bracket to prevent the entanglement around the companion <br/> cormorants rotary damper body into the mounting by the mounting screws screwed in the mounting portion in contact with the threaded implant the countersunk screw on the mounting base, besides A plurality of selectable pluralities for finely adjusting the rotary damper body to a predetermined position and affixing the rotary damper body to the predetermined position by contacting the flat head screw with the inclined surface below the head in which the degree of protrusion from the mounting portion by screwing is adjusted. Of the recess Rotary damper mounting structure characterized in that it is recessed into the part.