JPH03239837A - Rubber damper - Google Patents

Abstract

PURPOSE:To make it easy to fitting rubber dampers without the drift of a damper body by fixing the cylindrical holder and cap to be engaged with each other with the annulus section of the damper body held between them. CONSTITUTION:An annulus section (n) is formed in a body at the rear end of a damper body (a) made of soft rubber. A cylindrical holder (b) is made of high rigid material, and an engaging section P is formed on the peripheral surface of the cylindrical section b1 which is fitted to the peripheral surface of the damper body (a). The cap (q), which is secured to the damper body (a) from the opposite side, is provided with a locking section (r), to which engaging section P is fitted, on the inner surface in a dovetail groove like state. Since the cylindrical holder (b) and cap (q) are fixed to each other with the annulus section (n) of the damper body (a) inserted between them, the damper body (a) will not drifted in relation to the cylindrical holder (b). Thus, a rubber damper can be fitted to the specified place.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is arranged between a floating mechanism section and an outer shell member such as a case, and is used to prevent unexpected vibrations from being transmitted to the floating mechanism section. Concerning the damper used.

[Prior Art] Devices such as home-use CD disc playback devices are designed on the premise that they are placed in a horizontal position. On the other hand, in-vehicle devices are installed horizontally or vertically due to the space available for installing them.

In this regard, the present inventor has developed a disc playback device that can be placed both horizontally and vertically, and that can perform a pick amplifier that is compatible with the installation orientation. A disc playback device having this structure is introduced in Japanese Patent Application No. 1-109666.

This disc playback device! 1 has an outer casing 2 as an exterior, and within this outer casing 2 a support frame 3 is floatingly supported by dampers 4° 4 . . . 4 provided at the four corners. The damper 4 is filled with viscous oil such as silicone oil. A support rod 4a whose one end is inserted into the damper 4 is attached to a support plate 3b provided on the support frame 3, and the rear part of the damper 4 is fixed to the outer casing 2.

A magazine M is housed within the support frame 3. In the magazine M, a plurality of trays t are arranged vertically 11, and a compact disc d is stored in the center of these trays t.

After the magazine M is stored in the support frame 3 through the front opening 5, predetermined trays in the magazine M are kicked out one by one by a kicking mechanism. The kicked out tray t is positioned at the position shown in the figure. At this position, the compact disc d is held and rotated at a predetermined rotational speed so that the information on the compact disc d can be read by the pink-up 3o.

Since this disc playback device 1 was developed for use in a vehicle, it can be placed horizontally as shown in Figure 3, or vertically by being raised 90 degrees vertically from the position shown in Figure 3. , usually stored in the trunk at the back of the car.

Then, by operating the operation panel in the driver's cab, a desired disk d is kicked out together with the tray t to a position as shown in FIG. 1, and the information on the disk d is read by the pickup 30.

In order to enable both horizontal and vertical installation, a pair of vibration isolation springs 11 are arranged on both sides of the main body of the device 1, between the side surface 3a of the support frame 3 and the side surface 2a of the outer casing 2. Note that the sides 2a and 3a are selected from surfaces that do not have a vertical relationship regardless of whether the device is placed horizontally or vertically.

The vibration isolating spring 11 cooperates with the damper 4 to absorb shocks, vibrations, etc. transmitted from the vehicle when the vehicle is running. This anti-vibration spring 1 has its lower end connected to the side surface 3 of the support frame 3.
It is rotatably attached to a support shaft 10 fixed to the outer casing 2, and its upper end is fixed to a protruding end 12a of a rotating plate 2 rotatably attached to the side surface 2a of the outer casing 2.

The rotating plate 12 is pivotally attached to the side surface 2a of the outer casing 2 by a support shaft 13, and has an arc-shaped opening 14 symmetrically about the support shaft 13. 5 is provided.

These arc-shaped openings 14, 15 are formed over an angular range of 90 degrees around the support 11 [113. Guide shafts 16 and 17 fixed to the side surface 2a of the outer casing 2 are engaged with the arc-shaped openings 14115, respectively.

When changing the disk reproducing apparatus 1 from the horizontal position shown in FIG. 3 to the vertical position, a total of four rotary plates 12 placed on both inner surfaces of the outer casing 2 are rotated 90 degrees in the same direction. Then, each vibration isolating spring 11 is aligned with the depth direction of the outer casing 2, and the support frame 3 is suspended in the depth direction within the outer casing 2.

[Problem M to be Solved by the Invention] A rubber damper used for floatingly supporting a floating mechanism such as the support frame 3 has a damper body a made of soft rubber with rigidity, as shown in FIG. 4, for example. Insert it into the cylindrical holder b made of material such as hard rubber with high
The cylindrical holder b is fixed to a metal plate f such as a chassis by a screw e inserted through a screw hole d formed in a flange C formed at one end of the cylindrical holder b.

Alternatively, as shown in Fig. 5, a damper body a having a flange g formed on the rear end thereof is inserted into a hole hi formed in a sheet metal f, and the hole is formed in a groove j formed on the side surface of the flange g. A sheet metal f on the periphery of the flange g is sandwiched between the flange g and the sheet metal f, and in this state, the flange g and the sheet metal f are fixed with an adhesive k.

However, such a rubber damper is difficult to install. For example, in the rubber damper shown in FIG. 4, it is required to secure the damper body a and the cylindrical holder b with screws while ensuring their positional relationship.

Moreover, since the damper main body a is made of soft rubber filled with viscous oil, it is likely to be misaligned during installation. As a result, the rubber damper does not have the desired vibration-proofing function, and it is not possible to completely prevent shocks, vibrations, etc. from being transmitted to the floating mechanism section that is supported in a floating manner.

On the other hand, in the rubber damper shown in FIG. 5, it is difficult to fix the periphery of the flange g to the metal plate f at the edge of the hole with uniform adhesive force. In addition, since the damper body a is used in an exposed state, the support rod m inserted into the shaft hole 1 is
When the damper body a is pulled to one side due to the relative movement of the damper body a, the adhesive state between the flange g and the sheet metal f at that portion is likely to be broken.

Therefore, the present invention has been devised to solve such problems, and by disposing the damper main body between the holder and the cap that are engaged with each other,
The object of the present invention is to provide a rubber damper that facilitates installation work and prevents the installation part from coming off a sheet metal such as a chassis.

[Means for Solving the Problem] In order to achieve the object, the rubber damper of the present invention includes a damper body made of soft rubber in which a flange is formed at the rear end, and a damper body made of soft rubber, and the flange is attached to the damper body from the front end side. a highly rigid cylindrical holder that is fitted into the holder until it abuts the holder and has an engaging portion formed on its circumferential surface, and a lock that is attached from the rear end side to the holder housing the damper body and that engages with the engaging portion. and a cap having a portion formed on the inner circumferential surface.

[Function] In the rubber damper of the present invention, a cylindrical holder and a camp are attached to both the front and rear ends of the damper body. and,
The holder and the cap are simply interconnected, for example by means of a bayonet connection. Therefore, the positional relationship of the damper body with respect to the holder is maintained as originally designed. Further, since the flange provided at the rear end of the damper body is pressed between the end face of the holder and the inner surface of the camp, the damper body will not be misaligned with respect to the holder even during use.

[Examples] Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

As shown in Fig. 1, the rubber damper of this embodiment has a flange part n integrally molded on the rear end of the damper body a made of soft rubber, and the inside is hollow, and silicone is injected therein. It is filled with viscous oil such as oil. Tsubabe "] is,
It may be made of a material with relatively high rigidity and integrated with the damper body a.

The cylindrical holder b is made of a highly rigid material such as hard rubber, and has a cylindrical portion fitted onto the circumferential surface of the tamper body a.
An engaging portion p is formed on the circumferential surface of.

The axial length of the cylindrical holder b including the flange b2 is equal to or slightly longer than the length of the cylindrical portion a of the damper body a. Further, the inner diameter of the cylindrical portion b+ is approximately equal to the outer diameter of the cylindrical portion a1 of the damper body a.

On the other hand, a cap q is attached to the damper body a from the opposite side.
is a bottomed cylindrical body having an inner diameter corresponding to the cylindrical portion b+ of the cylindrical holder b, and a dovetail-shaped locking portion r into which the engaging portion p is fitted is provided on the inner surface thereof. Cap q is
Like the cylindrical holder b, it is made of a highly rigid material such as hard rubber, but the cap q can also be made of a relatively soft material without being restricted by this.

Furthermore, when the engaging part p is fitted into the locking part r and the holder b and the cap q are connected, the distance from the inner surface of the flange b2 to the bottom inner surface of the cap q is the axis of the damper body a including the flange part n. It is slightly shorter than the length in the direction. As a result, when holder b and cap q are connected, damper body a
The flange n is compressed between the end face of the cylindrical part b+ and the bottom inner surface of the cap q.

As shown in the construction drawing, the engaging part p is formed on the circumferential surface of the cylindrical part b+ as a protrusion extending in the circumferential direction of the cylindrical part bt, and its tip is a key part p. .

A lock 1r that is fitted with this engaging portion p is a cap q.
It is provided by thinning the cylindrical side wall of the cylindrical side wall, and an opening r into which the engaging part P can enter is formed in the end face of the cylindrical side wall, and a guide part r2 extending in the axial direction from the opening r1; It has a locking groove part r3 bent at a right angle from the guide part r2. Furthermore, a tongue piece r5 is formed at the end of the cylindrical side wall and includes a protrusion r4 facing the locking grooves r.

Next, a method of assembling the rubber damper of the fifth embodiment will be explained.

First, the support rod 4a extending from the floating mechanism section (see Figure 3)
The cylindrical portion b1 of the cylindrical holder b is fitted into the cylindrical portion a1 of the damper body a from the side where the shaft hole a2 into which the damper is inserted is formed until the end surface of the cylindrical portion b1 abuts the flange portion n. Next, from the opposite side, insert the cap q into the cylindrical part b+ of the cylindrical holder b.
Overlap them and insert them.

At this time, the positional relationship between the cylindrical holder b and the cap q is ensured so that the engaging part p matches the opening r1 of the locking part r. After the engaging part p enters the guide part r2,
Rotate the cap q with respect to the cylindrical holder b. As a result of this rotation, the engaging portion ρ enters the guide groove r= as shown in Fig. Wi2, the key portion p of the engaging portion p and the protrusion r4 engage, and the cap q engages with the cylindrical holder b. It will be in a combined state.

In this engaged state, the flange n of the damper body a is pressed between the end surface of the cylindrical portion b1 and the inner surface of the lower portion of the cap q. That is, the damper body a is maintained at a predetermined position via the flange n, and no misalignment occurs between the damper body a and the cylindrical holder b.

Further, when pressing the flange n, a reaction force is generated on the cylindrical holder b and the camp q. This reaction force acts in the direction of separating the cylindrical holder b and the cap q from each other as shown by the arrow in FIG. The engagement force between them increases, and the engaged state cannot be easily released.

In this way, the rubber damper in which the cylindrical holder b and the camp q are attached to the damper body a can be assembled, for example, by the cylindrical holder b.
An adhesive is applied to the flange b2 of the flange b2, and the flange b2 is attached to a hole provided at an appropriate location in the outer casing from the inside or outside. Alternatively, the mounting may be performed using screws e as in the case of FIG. 4. At this time, since there is no risk of misalignment between the damper body a and the cylindrical holder b,
Installation is extremely easy.

When replacing the damper body a, once the cap q is pressed against the cylindrical holder b side, the engaged state is released by rotating it, and the engaging part P is moved from the engaging groove part r3 to the guide part r2. move it. Then, the cap q is separated from the cylindrical holder b.

Thereby, the damper body a located inside the cylindrical holder b can be taken out.

[Effects of the Invention] As explained above, in the rubber damper of the present invention, the flange of the damper main body is sandwiched and fixed between the cylindrical holder b, so that the damper is fixed to the cylindrical holder b. The main body will no longer be misaligned. Therefore, the rubber damper equipped with the cylindrical holder and the cap can be easily attached to a predetermined location. In addition, even during use, the movement of the damper body is restricted by the flange, so the damper body does not undergo any major shape changes, and the fluidity of the viscous oil filled inside is maintained well. ,
The desired anti-vibration effect can be obtained. Moreover, since it is easy to disassemble, the damper main body can be easily replaced.

[Brief explanation of drawings]

Figure 1 is an exploded view of a rubber damper in an embodiment of the present invention.
Fig. 2 shows an engagement mechanism between the cylindrical holder b and the cap q, and Fig. 3 shows an in-vehicle C as an example to which the present invention is applied.
A D disk reproducing device is shown, and FIGS. 4 and 5 show a conventional rubber damper. a...Damper body aI...Cylindrical part a2...
Shaft hole b...Cylindrical holder b+...Cylindrical part b2 Flange n...Flame part p...Engaging part p・
... Key part q... Camp r... Locking part r... Engagement part r2... Guide part r3... Engagement groove part r4... Protrusion r5... Tongue piece

Claims (1)

[Claims] A damper body made of soft rubber with a flange formed at the rear end,
A highly rigid cylindrical holder that is fitted into the damper body from the front end side until it abuts the flange portion and has an engaging portion formed on the circumferential surface, and is attached to the holder that accommodates the damper body from the rear end side. and a cap having a locking portion formed on an inner circumferential surface that engages with the engaging portion.