JPH0625844Y2 - Anti-vibration structure of indicator light - Google Patents

Description

[Detailed description of the device] <Industrial application field> This device is used for automatic machines, robots, production line parking lots,
Vibration-proof structure of indicator lights to protect them from the influence of external vibration when they are installed in a dangerous place and used for various conditions, such as lack of material, jammed work, full vehicles, and leaving signals for danger, etc. .

<Prior Art> This type of indicator light gives a signal notification by illuminating the surroundings with light of a plurality of colors, for example, for maintaining safety of users such as workers and maintenance of automatic machines and equipment. It is installed for use.

Conventionally, as a seismic resistant structure of an indicator light for preventing disconnection of a light source or the like, there has been one using a rubber bush or the like, but since the rubber bush is exposed to the outside of the indicator light, it easily deteriorates and has durability. There was a problem with. Further, since it is difficult to adjust the tightening amount of the rubber bush, there is a problem that desired vibration resistance cannot be obtained.

<Problems to be solved by the invention> In order to solve such a problem, an elastic member is built in the indicator lamp to improve durability, and it is possible to adjust the tightening amount (elastic pressure amount) of the elastic member. A vibration-proof structure has been proposed to obtain the seismic performance of (for example, Japanese Patent Application No. 1-56828).

FIG. 5 shows the vibration-proof structure. Referring to the figure, the base 90 has a two-piece structure including a cylindrical upper member 90a and a cap-shaped lower member 90b combined with the cylindrical upper member 90a. Further, lower ends of a plurality of shafts 92 in which socket plates (not shown) for accommodating light sources are connected in a plurality of stages are screwed to a bottom plate 93.
3 is engaged with the step portion 90c of the upper member 90a.

Then, the flange portion 94a of the pole boss 94 connected to the support pole 99 is sandwiched between the pair of rubber sheets 95 and 96, and the lower member 90b is attached to the bottom plate 93 by the mounting screw 97.
The rubber sheets 95 and 96 are sandwiched between the bottom plate 93 and the edge 90d of the lower member 90b by being fastened. In this state, the rubber sheets 95 and 96 are elastically pressed, and the base 90 is elastically supported by the pole boss 94 via the rubber sheets 95 and 96.

However, in this structure, at the time of assembling, as shown in FIG. 6, three screw insertion holes 95a and 9 are formed in the two rubber sheets 95 and 96 and the flange portion 94a, respectively.
6a, 94b and the screw hole 93a of the bottom plate 93 are aligned with each other, and the mounting screw 97 is inserted therethrough, which makes assembly work difficult.

If the mounting screw 97 is screwed in too much, the bottom plate 93
This may lead to a situation such as deformation of the blade or breakage of the edge 90d. In order to avoid this, it is interposed between the bottom plate 93 and the edge 90d to regulate the distance between them, and the rubber sheet 95,
A spacer 98 is externally fitted to each mounting screw 97 in order to regulate the amount of elastic pressure of 96. In addition to these spacers 98, parts such as the plurality of rubber sheets 95 and 96 and the plurality of mounting screws 97 are required, so that the number of parts is large.

Since the number of parts is large, the number of assembling steps is large, and the assembling work is difficult as described above. Therefore, it takes a long time to assemble and the assembling cost is high. Further, since the number of parts is large, the parts cost is also high, and in addition to the high assembling cost, the manufacturing cost is high.

Further, since it is necessary to secure a fastening space for the mounting screws, there is a problem that the base portion becomes large and the entire display lamp becomes large.

The present invention has been made in view of the above problems, and an object thereof is to provide a vibration-proof structure for an indicator lamp that can be manufactured at low cost and can be downsized.

<Means for Solving the Problems> A vibration-proof structure for a display lamp according to the present invention for solving the above-mentioned problems is a support member provided on a cylindrical base portion into which an end portion of a stay holding a light source storage portion is inserted. In the indicator lamp in which the end portion of the support member is inserted and the base portion is supported by the support member, the end portion of the support member is held by the elastic spacer, and the base portion is engaged and inserted on the elastic spacer. A pressing plate that is pressed by the stay in the opened state is provided, and the elastic spacer is elastically sandwiched between the pressing plate and the end edge of the base portion.

<Operation> According to the vibration-proof structure of the indicator light having the above configuration, since the pressing plate is provided on the elastic spacer that holds the end portion of the supporting member,
When the end part of the stay is engaged with the base part, the pressing plate is pressed by the stay in the engaged state, and the elastic spacer is elastically sandwiched between the pressing plate and the edge of the base part. To be done. As a result, the support member and the base portion are fixed by the elastic spacer, and the base portion is elastically supported by the support member via the elastic spacer.

In this way, since the elastic spacer can be fixed by engaging the stay with the base portion, parts such as mounting screws and spacers are not required, which can reduce the number of parts and the number of assembling steps. Difficult work such as screw hole alignment becomes unnecessary.

Furthermore, since the fastening space for the mounting screws is unnecessary, the base can be downsized.

<Example> Hereinafter, an example will be described with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a vibration-proof structure of an indicator lamp as an embodiment of the present invention. Referring to FIG. 1, the base 2 of the indicator lamp 1 is elastically supported by a pole boss 3 as a support member connected to the support pole 11 via a rubber spacer 4 as an elastic spacer.

Referring to FIG. 1 and FIG. 2, the indicator lamp 1 includes a plurality of light sources 5 for signal notification, a socket plate 6 as a light source housing portion for housing each light source 5, and these socket plates 6
A pair of stays 7 connected to each other in a plurality of stages, the base 2 having the lower end portions 7a of the stays 7 engaged, and the stay 7
And a tubular globe 8 for colored light transmission that covers the light sources 5 at each stage. The screws 12 fix the globe 8 by fastening the mounting top plate 10 to the top plate 71 of the stay 7.

With reference to FIGS. 1 and 4, the lower end portion 7 a of each stay 7
A resilient tongue piece 7b that is cut and raised outward is formed on the.

A pair of ribs 21 having a U-shaped cross section are formed on the inner wall of the base portion 2 and extend in the axial direction, and a pair of ribs 25 adjacent to each other are formed between the ribs 21.

A guide groove 22 is formed in the rib 21. The guide groove 22 guides the introduction of the lower end portion 7 a of the stay 7 and restricts the stay 7 from moving in the circumferential direction and the radial direction of the base portion 2. Further, an engaging groove 23 for engaging the elastic tongue piece 7b is formed in a state in which the guide groove 22 is inserted from the middle part in the vertical direction as a paragraph. When the stay 7 is introduced into the base portion 2, the resilient tongue piece 7b is once bent inward by the guide groove 22, but when it is engaged with the engaging groove 23, the elastic tongue piece 7b expands to its original state. , Base part 2 of stay 7
Is prevented from being removed.

As shown in FIG. 1, the engagement groove 23 extends downward, penetrates the edge 24 of the base portion 2 and communicates with the outside, so that the inside of the engagement groove 23 extends from the edge 24 side. By inserting, for example, a driver or a predetermined jig, the above-mentioned engagement of the elastic tongue 7b can be released.

The pole boss 3 has a cylindrical shape, and a flange portion 3a is formed on an upper portion of the pole boss 3. Third
Referring to the figure, the peripheral portion of the flange portion 3 a has an uneven shape that matches the uneven shape of the ribs 21 and the like of the base portion 2. The rubber spacer 4 has a shape substantially along the flange portion 3a, and holds the flange portion 3a in a wrapped state. Mount the pole boss 3 with the rubber spacer 4 to the base 2
, The relative movement of the pole boss 3 and the base portion 2 in the circumferential direction is regulated by the matching of the concave and convex shapes. The thickness of the rubber spacer 4 is set to be suitable for elastic support. The rubber spacer 4 may be integrally formed with the flange portion 3a by insert molding, or may be a separate body.

The rubber spacer 4 is sandwiched between the pressing plate 9 introduced onto the rubber spacer 4 and the edge 24 of the base 2.
The planar shape of the pressing plate 9 is substantially the same as that of the rubber spacer 4, and the pressing plate 9 is restricted from moving in the circumferential direction by the engagement with the ribs 21 and 25 of the base 2. Base 2 of stay 7
The dimensions of the respective parts are set so that the lower end portion 7a of the stay 7 presses the pressing plate 9 in the engaged state with the rubber spacer 4 in the engaged state with the pressing plate 9 and the edge 24. The elastic tongue piece 7b of the stay 7 is elastically sandwiched between the inner spacer 23 and the inner upper wall 23 of the engaging groove 23.
The stay 7 is pressed by a and is securely fixed to the base 2.

According to this embodiment, the pole boss 3 with the rubber spacer 4 is provided.
After inserting and engaging the pressing plate 9 from above the base portion 2,
When the end portion of the stay 7 is pushed along the guide groove 22, the resilient tongue 7b of the stay 7 engages with the engaging groove 23,
This prevents the stay 7 from being pulled out from the base 2. In addition, since the stay 7 presses the pressing plate 9 in this state, the rubber spacer 4 is elastically sandwiched between the pressing plate 9 and the end edge 24 of the base portion 2, whereby the pole boss 3 , The base portion 2 and the stay 7, the rubber spacer 4
Are fixed to each other via the elasticity of the base parts 2 and the base part 2 is elastically supported.

In this way, since the fixing and elastic support described above can be performed only by engaging the stay 7, parts such as the above-mentioned mounting screws and spacers for adjusting the amount of elastic force can be dispensed with, thus reducing the number of parts The cost can be reduced. In addition, the reduction in the number of parts leads to a reduction in the number of assembly steps,
Assembly costs can be reduced. In particular, when using the mounting screws, there was a difficult work such as screw hole alignment, but this can be eliminated, and the assembly cost can be further reduced. Manufacturing cost can be reduced by reducing these component costs and assembly costs.

Further, since the fastening space for the mounting screws can be eliminated, the base portion 2 can be downsized, and the downsizing of the indicator lamp 1 as a whole can be achieved.

The tightening amount (elastic pressure amount) of the rubber spacer 4 can be easily adjusted by adjusting the thickness of the pressing plate 9. The pressing plate 9 is
It may be fixed to the stay 7 side.

In addition, the present invention is not limited to the above-mentioned embodiment, and for example, as the engagement between the stay 7 and the base portion 2,
Other known engagement structures including mating can be used,
Further, various design changes can be made without changing the gist of the present invention, such as using a urethane resin spacer in place of the rubber spacer 4.

<Effect of the Invention> According to this invention, since the base part can be elastically fixed to the support member by engaging the stay with the base part, parts such as a mounting screw and a spacer for adjusting the tightening amount can be obtained. Is unnecessary, which reduces the number of parts and the number of assembling steps.
Difficult work such as screw hole alignment becomes unnecessary. Therefore, the component cost and the assembly cost can be reduced, and the manufacturing cost can be reduced.

Further, since the fastening space for the mounting screws is not required, the base part can be downsized, and the downsizing of the entire indicator light can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a vibration-proof structure of an indicator lamp as an embodiment of the present invention, FIG. 2 is an exploded perspective view of the indicator lamp, FIG. 3 is a plan view of a rubber spacer, and FIG. 4 is a base of a stay. FIG. 5 is a schematic perspective view showing a state of introduction into the base portion, FIG. 5 is a cross-sectional view of a conventional vibration-proof structure, and FIG. 6 is an exploded perspective view showing a component structure thereof. 1 ... Indicator light, 2 ... Base part, 24 ... Edge, 3 ... Pole boss (supporting member), 3a ... Flange part,
4 ... Rubber spacer (elastic spacer), 6 ... Socket plate (light source storage part), 7 ... Stay, 9 ... Pressing plate.

Claims (1)

[Scope of utility model registration request] 1. An indicator lamp in which an end portion of a supporting member is inserted into a cylindrical base portion into which an end portion of a stay holding a light source storage portion is inserted, and the base portion is supported by the supporting member, An end portion of the support member is gripped by an elastic spacer, and a pressing plate which is pressed by the stay in a state of being engaged with the base portion is provided on the elastic spacer. The pressing plate and the base portion are provided. A vibration-proof structure for an indicator lamp, wherein the elastic spacer is elastically sandwiched between the end and the edge of the indicator lamp.