JP2001208031A - Insulating spacer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved insulating spacer that can easily change from a usual fixed conductive state to an insulated state, does not require a great change in the position of electronics even when they are fitted in a metallic frame or the like, and does not need any restriction upon the packing of electronics in use. SOLUTION: In this spacer, board-like base 2, a screw insertion hole 3 bored near the center of base 2, at least two base supports 4 erectly arranged near the screw insertion hole 3 on one side of the base 2 and clipping portions 5 each located extendedly at the end of each base support 4 are integrally method using an insulating material. In this case, it is preferable to form inside of tip part 5a of the clipping portion 5 so as to have a curved surface. It is also desirable that at least one hinge 36 is provided on each base support 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating spacer, and more particularly, to an insulating spacer used for an electrically insulating support structure of electronic equipment.

[0002]

2. Description of the Related Art Conventionally, when mounting and fixing an electronic device inside a device housing made of a metal frame, it is general to fasten and fix it using a metal screw. In this case, as shown in FIG. 14A, the space between the metal frame 88, the electronic device 87 to be mounted, and the fixing metal screw 89 is
Each becomes a contact between metals and becomes electrically conductive.

[0003] However, if this conduction state poses a problem in terms of the functional and safety aspects of the equipment, it is necessary to change to a fixed state in an insulated state. In particular, after the manufacture of the equipment is completed,
For example, in the work of changing the conduction state to the insulation state, for example,
In general, an insulating state is realized by using an insulating collar as disclosed in JP-A-6-85472.

[0004] The insulating collar described in the above publication is disclosed in FIG.
As shown in (b), the metal frame 88 and the electronic device 87 are separated from each other so as to be in an insulated state.
Metal screw 89 inserted through a screw insertion hole
The electronic device 87 is mounted and fixed on the metal frame 88 by the above.

On the other hand, Japanese Utility Model Registration No. 2548301 discloses a spacer for maintaining a predetermined distance between a plate-shaped member and another member. As shown in FIG.
The spacer 91 includes a shaft 93, a flange 95, a screw insertion hole 97, a hinge 99, and a gap maintaining piece 101.

When connecting the two panels P1 and P2 with screws S at a predetermined interval as shown in FIG. 16, a spacer 91 is formed in the panel P1 as shown in FIG. When it is pushed into the hole,
1 moves in the direction of the arrow A1 to dodge the panel P1, and when the gap maintaining piece 101 passes through the hole of the panel P1, FIG.
As shown in FIG. 6 (b), the gap maintaining piece 101 moves in the direction of the arrow A2, and the panel P1
16 and, finally, as shown in FIG.
Is moved in the direction of arrow A3, and panel P1 and panel P2 are moved.
Are maintained at intervals that sandwich the interval maintaining piece 101.

[0007]

However, Japanese Patent Application Laid-Open No.
In the insulating collar described in -85472, when the electronic device 87 is fixed to the metal frame 88, two portions are provided between the metal screw 89 and the metal frame 88 and between the metal frame 88 and the electronic device 87, Since it is necessary to attach the two divided collars 81 and 82 to one metal screw 89, the use of the collars 81 and 82 increases as the number of metal screws 89 used for fixing the electronic device 87 increases. Since the number (the total number) is doubled, there is a problem that the workability is poor and the cost is increased.

In the above-mentioned insulating collar, a collar 81,
Since the screw insertion hole formed in the metal frame 88 in which the 82 is sandwiched needs to have a diameter larger than the diameter of the screw insertion hole in the ordinary conductive fixing structure, in order to perform insulation,
The screw insertion hole to be drilled in the metal frame 88 needs to be made large, and there is a problem that it is difficult to change from the normal conductive fixed state to the insulated state.

Further, in the above-mentioned insulating collar, a collar 8
In the insulating state using the first and the second 82 (FIG. 14B),
When the conductive state is not used (FIG. 14A), the color 8
Since the mounting position of the electronic device 87 changes greatly due to the thickness of the electronic devices 1 and 82, the electronic device 8 used is
7 has a problem that restrictions on mounting are added.

On the other hand, the utility model registration No. 2548301
The spacer described in the above publication is a single component, and does not cause the above-described problem regarding the number of components, but like the insulating collar described in the above publication, a screw insertion hole formed in the panel P1. Needs to be larger than the diameter of the screw insertion hole when the spacer 91 is not used.
It is necessary to make the screw insertion hole drilled in 1 large,
When the spacer 91 is used for insulation, there is a problem that it is difficult to change from the normal conduction fixed state to the insulation state.

Since the position of the panel P2 is determined by the thickness of the gap maintaining piece 101 when the spacer 91 is used and when it is not used, the spacer 91 is insulated, that is, the collar 81 in FIG. , 82, a large change occurs in the mounting position of the electronic device 87.
7 has a problem that restrictions on mounting are added.

In view of the above, the present invention has been made in view of the above-mentioned problems in the conventional insulating collar and the like, and can easily change from a normal conductive fixed state to an insulated state, and can provide an electronic device. It is an object of the present invention to provide an insulating spacer that does not cause a significant change in the position of an electronic device even when mounted on a metal frame or the like and does not impose restrictions on the mounting of the electronic device used. .

[0013]

According to a first aspect of the present invention, there is provided an insulating spacer comprising a plate-shaped base portion and a hole formed substantially at the center of the base portion. A screw insertion hole, at least two base support portions erected on the base portion in the vicinity of the screw insertion hole, and a sandwich portion connected to each end of the base support portion are formed of an insulating material. It is characterized by being integrally molded.

According to the first aspect of the invention, when the electronic device is fixed to the metal frame or the like in an insulated state by using the metal screw, the holding portion of the insulating spacer is formed in the metal frame or the like. Insert the metal screw into the screw insertion hole from the electronic device side, insert the metal screw from the tip of the insertion part and tighten it into the screw hole of the electronic device, so that each insertion part is pushed out and the metal screw It is sandwiched between the metal frame.

[0015] Thereby, the base portion of the insulating spacer is between the metal frame or the like and the electronic device, the sandwiching portion is between the metal frame or the like and the metal screw, and the base support portion is formed on the metal frame. By interposing each between the edge of the provided screw insertion hole and the side surface of the metal screw, the contact portion between the metal frame or the like, the electronic device, and each of the metal screws is maintained in an electrically insulated state. be able to.

Therefore, it is possible to maintain the electrical connection between the metal frame and the like, the electronic device, and each of the metal screws only by assembling a single component from one direction. At this time, it is not necessary to increase the size of the metal bolt insertion hole formed in the metal frame or the like, so that the normal conductive fixed state can be easily changed to the insulated state, and the electronic device can be mounted on the metal frame or the like. In this case, only the thin plate-shaped base intervenes between the electronic device and the metal frame, so that the position of the mounted electronic device does not change significantly, There are no restrictions on implementation.

Further, by providing three or more of the sandwiching portions, even if an arbitrary sandwiching portion is broken due to tightening of the metal screw at the time of fastening the metal screw, the remaining sandwiched portion can keep the insulating state. Can be secured.

The invention according to claim 2 is characterized in that the inside of the distal end of the sandwiching portion is formed in a curved shape.

[0019] Thus, the fastening operation of the metal screw can be smoothly performed in response to the operation in which the sandwiching portion falls outward due to elastic deformation in conjunction with the linear movement of the metal screw,
It is possible to prevent damage or the like due to excessive force being applied to the insulating spacer.

According to a third aspect of the present invention, each of the base support portions is provided with at least one hinge portion.

According to the third aspect of the present invention, a smoother operation can be performed with respect to an operation in which the sandwiching portion falls outward due to elastic deformation in conjunction with the linear movement of the metal screw, and the insulating spacer can be provided. Can be prevented from being damaged by excessive force.

Further, by providing two or more hinge portions in each of the sandwiching portions, the thickness of the metal frame sandwiched between the base portion and the sandwiching portion can be set by the number of the hinge portions. It is possible to easily cope with a change in the thickness of the metal frame on which the spacer is mounted.

According to a fourth aspect of the present invention, at least one convex portion is provided on each outer side surface of the base supporting portion.

According to the present invention, in the step of inserting the insulating spacer into the screw insertion hole of the metal frame, the insulating spacer can be easily fixed to the metal frame via the convex portion. The invention according to claim 5, which can prevent the natural falling off and improve the workability, is characterized in that an adhesive is applied to each of the sandwiching portions or at least a part of the base portion.

According to the present invention, in the step of inserting the insulating spacer into the screw insertion hole of the metal frame, the insulating spacer can be easily and reliably fixed to the metal frame. Dropping can be reliably prevented, and workability is further improved.

[0026]

Next, a specific example of an embodiment of an insulating spacer according to the present invention will be described with reference to the drawings.

FIG. 1 shows a first embodiment of an insulating spacer according to the present invention. The insulating spacer 1 comprises a plate-shaped base portion 2 and a screw insertion hole 3 formed in the center of the base portion 2.
And two base supporting portions 4 erected on the base portion 1 in the vicinity of the screw insertion hole 3 and a sandwiching portion 5 connected to each end of the base supporting portion 4 using an insulating material. It is molded.

The base portion 2 is formed in a substantially disk shape, and two base support portions 4 are erected at opposing positions near the screw insertion hole 3 at the center.

The diameter of the screw insertion hole 3 must be larger than the diameter of the metal screw 8 (FIG. 8) to be used. Also,
At the end of each base support portion 4, a sandwiching portion 5 is formed perpendicularly to the base portion 2 and symmetrically with respect to the center of the screw insertion hole 3.

The leading end 5a of each of the sandwiching portions 5 has a screw insertion hole 3
The center side is chamfered at an acute angle, and the sandwiching portion 5 is formed thicker than the base supporting portion 4. The outer diameter A of the holding portion 5 is smaller than the diameter of the screw insertion hole 7 a of the metal frame 7 (FIG. 8) to be attached, and the inner diameter B of the holding portion 5 is smaller than the screw diameter of the metal screw 8. Is done.

Next, the operation of the insulating spacer 1 having the above configuration will be described with reference to FIGS.

As shown in FIG. 8, the electronic device 6 to be mounted is
Is provided with a plurality of fixing screw holes 6a.
Is mounted and fixed in the metal frame 7 of the device housing, and a fixing screw insertion hole 7a corresponding to the screw hole 6a of the electronic device 6 is provided.
Are provided in the same number.

First, as shown in FIG. 8 (a), the plurality of screw insertion holes 7a of the metal frame 7 are moved from the fixed side of the electronic device 6 to the sandwiching portion 5 of the insulating spacer 1 to the base portion. 2 until it is aligned with the lower surface of the metal frame 7, and FIG.
As shown in (a), the upper surface of the electronic device 6 is brought into contact with the bottom surface of the base portion 2, and the base portion 2 is sandwiched between the metal frame 7 and the metal screw 8.

Next, as shown in FIGS. 8 (b) and 9 (b), a metal screw 8 for fixing the electronic device 6 is inserted from the tip 5a of the sandwiching portion 5. Then, due to the inner peripheral diameter B of the sandwiching portion 5 being smaller than the diameter of the metal screw 8 and the shape of the sandwiching portion 5, as shown in FIG.
By pressing against the tip 5a of the, the sandwiching portion 5 opens outward.

When the metal screw 8 starts to be fitted into the screw hole 6a of the electronic device 6, the pressing force of the screw head 8a due to the linear movement of the metal screw 8, as shown in FIG. Elastic deformation is induced at the connecting portion between the sandwiching portion 5 and the base supporting portion 4. The holding portion 5 moves outward with the deformed portion as the center, and finally each holding portion 5 is located between the metal frame 7 and the screw head 8a as shown in FIGS. 8C and 9D. Inclusion part 5
, And the contact portions between the metal frame 7, the electronic device 6, and each of the metal screws 8 can be maintained in an electrically insulated state.

Next, the second embodiment of the insulating spacer according to the present invention will be described.
An embodiment will be described with reference to FIG.

In the insulating spacer 11 in this embodiment,
The fourth embodiment is different from the first embodiment in that four base support portions 4 and four holding portions 5 are provided on the base portion 1 in the vicinity of the screw insertion holes 3, respectively. Same as the example. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

With this configuration, even if an arbitrary sandwiching portion 5 is broken when the metal screw 8 is fastened, an insulating state can be ensured by the remaining sandwiching portion 5.

Next, the third aspect of the insulating spacer according to the present invention will be described.
An embodiment will be described with reference to FIG.

In the insulating spacer 21 according to the present embodiment,
The point that the center side of the screw insertion hole 3 of the distal end portion 25a of each sandwiching portion 25 is formed in a curved shape, unlike the first embodiment.
Other configurations are the same as in the first embodiment. still,
The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

With such a configuration, the fastening operation of the metal screw 8 can be performed smoothly in response to the operation in which the sandwiching portion 25 falls outward due to elastic deformation in conjunction with the linear movement of the metal screw 8. In addition, breakage or the like due to excessive force applied to the insulating spacer 21 can be prevented.

Next, the fourth embodiment of the insulating spacer according to the present invention will be described.
An embodiment will be described with reference to FIG.

In the insulating spacer 31 according to the present embodiment,
One hinge portion 36 is provided in the vicinity of the base support portion 4 of each sandwiching portion 5.
This embodiment is different from the first embodiment in that it is formed, and the other configuration is the same as that of the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

Next, the insulating spacer 31 having the above structure
Will be described with reference to FIGS. 8 and 10.

As shown in FIG. 8, the electronic device 6 to be mounted is
Is provided with a plurality of fixing screw holes 6a.
Is mounted and fixed in the metal frame 7 of the device housing, and a fixing screw insertion hole 7a corresponding to the screw hole 6a of the electronic device 6 is provided.
Are provided in the same number.

First, as shown in FIG. 8 (a), a plurality of screw insertion holes 7a of the metal frame 7 are moved from the fixed side of the electronic device 6 to the sandwiching portion 5 of the insulating spacer 31 to the base portion. 2 is fitted to the lower surface of the metal frame 7, and the upper surface of the electronic device 6 is brought into contact with the bottom surface of the base portion 2 as shown in FIG. 8 between.

Next, as shown in FIGS. 8 (b) and 10 (b), a metal screw 8 for fixing the electronic device 6 is inserted from the tip 5a of the sandwiching portion 5. Then, the inner peripheral diameter B of the sandwiching portion 5
Is smaller than the diameter of the metal screw 8 and the shape of the sandwiching portion 5, as shown in FIG. Opens outward.

Then, when the metal screw 8 starts to be fitted into the screw hole 6a of the electronic device 6, as shown in FIG. Elastic deformation is induced in the hinge part 36 formed in the base support part 4. As shown in FIG. 8C and FIG. 10, the sandwiching portion 5 moves outward around the deformation point of the hinge portion 36.
As shown in (d), each sandwiching part 5 finally intervenes between the metal frame 7 and the screw head 8a,
In addition, the contact portion between the electronic device 6 and each of the metal screws 8 can be maintained in an electrically insulated state.

According to the present embodiment, since the hinge portion 36 is formed, a smoother operation can be achieved with respect to the operation in which the sandwiching portion 5 falls outward due to elastic deformation in conjunction with the linear movement of the metal screw 8. It is also possible to prevent breakage due to excessive force applied to the insulating spacer 31.

Next, the fifth embodiment of the insulating spacer according to the present invention will be described.
An embodiment will be described with reference to FIG.

In the insulating spacer 41 according to the present embodiment,
The fourth embodiment is different from the fourth embodiment in that a plurality of hinge portions 36 existing near the base support portion 4 of each sandwiching portion 5 in the fourth embodiment are different from the fourth embodiment. is there. Note that the same components as those in the fourth embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

Next, the insulating spacer 41 having the above configuration is used.
Will be described with reference to FIGS. 8 and 11.

As shown in FIG. 8, the electronic device 6 to be mounted is
Is provided with a plurality of fixing screw holes 6a.
Is mounted and fixed in the metal frame 7 of the device housing, and a fixing screw insertion hole 7a corresponding to the screw hole 6a of the electronic device 6 is provided.
Are provided in the same number.

First, as shown in FIG. 8A, the plurality of screw insertion holes 7a of the metal frame 7 are moved from the fixed side of the electronic device 6 to the sandwiching portion 5 of the insulating spacer 41 to the base portion. 11 is inserted until the bottom surface of the metal frame 7 matches the bottom surface of the metal frame 7, and as shown in FIG. 11A, the top surface of the electronic device 6 is brought into contact with the bottom surface of the base portion 2. 8 between.

Next, as shown in FIGS. 8 (b) and 11 (b), a metal screw 8 for fixing the electronic device 6 is inserted from the tip 5a of the holding portion 5. Then, the inner peripheral diameter B of the sandwiching portion 5
11B is smaller than the diameter of the metal screw 8 and the shape of the holding portion 5, as shown in FIG. Opens outward.

When the metal screw 8 starts to be fitted into the screw hole 6a of the electronic device 6, as shown in FIG. 11C, the pressing force of the screw head 8a due to the linear movement of the metal screw 8 causes Elastic deformation is induced in the hinge part 36 formed in the base support part 4. The pinching portion 5 moves outward about the deformation point of the hinge portion 36, and FIG.
As shown in (d), each sandwiching part 5 finally intervenes between the metal frame 7 and the screw head 8a,
In addition, the contact portion between the electronic device 6 and each of the metal screws 8 can be maintained in an electrically insulated state.

According to this embodiment, since each of the sandwiching portions 5 is provided with two or more hinge portions 36, the thickness of the metal frame 8 sandwiched between the base portion 2 and the sandwiching portion 5 is reduced.
, And can easily cope with a change in the thickness of the metal frame 8 on which the insulating spacer 41 is mounted.

Next, the sixth aspect of the insulating spacer according to the present invention will be described.
An embodiment will be described with reference to FIG.

In the insulating spacer 51 of this embodiment,
A metal frame 7 (FIG. 8) is provided on the outer surface of each base support 4.
Is different from the first embodiment in that a spherical projection 57 smaller than the thickness of the first embodiment is formed.
This is the same as the embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and the detailed description is omitted.

Next, the insulating spacer 51 having the above configuration
Will be described with reference to FIGS. 8 and 12.

As shown in FIG. 8, the electronic device 6 to be mounted is
Is provided with a plurality of fixing screw holes 6a.
Is mounted and fixed in the metal frame 7 of the device housing, and a fixing screw insertion hole 7a corresponding to the screw hole 6a of the electronic device 6 is provided.
Are provided in the same number.

First, as shown in FIG. 8 (a), a plurality of screw insertion holes 7 a of the metal frame 7 are moved from the side where the electronic device 6 is fixed to the side where the insulating spacer 51 is inserted into the base 5. 2 is inserted until it matches the lower surface of the metal frame 7.
Then, as shown in FIG.
The protrusion 57 formed in the screw hole 7 of the metal frame 7
a. Then, the electronic device 6 is placed on the bottom of the base 2.
The base 2 is sandwiched between the metal frame 7 and the metal screw 8.

Next, as shown in FIGS. 8 (b) and 12 (b), a metal screw 8 for fixing the electronic device 6 is inserted from the tip 5a of the sandwiching portion 5. Then, the inner peripheral diameter B of the sandwiching portion 5
12B is smaller than the diameter of the metal screw 8 and the shape of the holding portion 5, the metal screw 8 is pressed against the distal end portion 5 a of the holding portion 5 as shown in FIG. Opens outward.

When the metal screw 8 starts to be fitted into the screw hole 6a of the electronic device 6, as shown in FIG. 12C, the pressing force of the screw head 8a due to the linear movement of the metal screw 8 causes Elastic deformation is induced at the connecting portion between the sandwiching portion 5 and the base supporting portion 4. The sandwiching portion 5 moves outward with the deformation point of the hinge portion 36 as a center, and as shown in FIGS. 8C and 12D, the metal frame 7 and the screw head 8a are finally connected. The sandwiching portions 5 are interposed therebetween, and the contact portions between the metal frame 7, the electronic device 6, and the metal screws 8 can be maintained in an electrically insulated state.

Next, the seventh aspect of the insulating spacer according to the present invention will be described.
An embodiment will be described with reference to FIG.

In the insulating spacer 61 according to the present embodiment,
The difference from the first embodiment is that the adhesive 68 is applied to a part of the base portion 2 and each of the sandwiching portions 5, and the other configuration is the same as that of the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

Next, the insulating spacer 61 having the above structure
Will be described with reference to FIGS. 8 and 13.

As shown in FIG. 8, the electronic device 6 to be mounted is
Is provided with a plurality of fixing screw holes 6a.
Is mounted and fixed in the metal frame 7 of the device housing, and a fixing screw insertion hole 7a corresponding to the screw hole 6a of the electronic device 6 is provided.
Are provided in the same number.

First, as shown in FIG. 8 (a), a plurality of screw insertion holes 7 a of the metal frame 7 are moved from the fixed side of the electronic device 6 to the sandwiching portion 5 side of the insulating spacer 61 and the base portion. 2 is inserted until it matches the lower surface of the metal frame 7.
Then, as shown in FIG. 13A, the adhesive 68 applied to the base 2 causes the base 2 to
Is completely fixed to the lower surface of the. Then, the upper surface of the electronic device 6 is brought into contact with the bottom surface of the base portion 2, and the base portion 2 is sandwiched between the metal frame 7 and the metal screw 8.

Next, as shown in FIGS. 8 (b) and 13 (b), a metal screw 8 for fixing the electronic device 6 is inserted from the tip 5a of the sandwiching portion 5. Then, the inner peripheral diameter B of the sandwiching portion 5
Is smaller than the diameter of the metal screw 8 and the shape of the sandwiching portion 5, as shown in FIG. Opens outward.

When the metal screw 8 starts to be fitted into the screw hole 6a of the electronic device 6, as shown in FIG. 13C, the pressing force of the screw head 8a due to the linear movement of the metal screw 8 causes Elastic deformation is induced at the connecting portion between the sandwiching portion 5 and the base supporting portion 4. The sandwiching portion 5 moves outward with the deformed portion as the center, and as shown in FIGS. 8 (c) and 13 (d), each of the sandwiches 5 is finally located between the metal frame 7 and the screw head 8a. The interposition part 5 is interposed, and the adhesive 6 applied to each interposition part 5
By virtue of 8, the sandwiching portion 5 and the surface of the metal frame 7 are completely fixed, and the contact portion between the metal frame 7, the electronic device 6, and each of the metal screws 8 can be maintained in an electrically insulated state.

Incidentally, it is also possible to appropriately combine the configurations of the insulating spacers shown in the first to seventh embodiments.
Each insulating spacer can be used even if the direction of the insulating spacer inserted into the screw insertion hole 7a of the metal frame 7 is opposite to the direction shown in the above embodiment.

[0073]

As described above, according to the first aspect of the present invention, a single component is assembled from only one direction, and each of the components between the metal frame or the like, the electronic device, and the metal screw is connected. It is possible to provide an insulating spacer that can maintain the contact portion in an electrically insulated state and can reduce component costs and assembly costs.

Further, it is possible to easily change from the normal conduction fixed state to the insulated state, and to cause a large change in the position of the electronic device even when the electronic device is mounted on a metal frame or the like. It is possible to provide an insulating spacer that does not have any restrictions on the mounting of electronic devices to be used.

According to the second aspect of the present invention, in addition to the above effects, the inside of the distal end of the sandwiching portion is formed in a curved surface, so that the sandwiching portion is elastically deformed in conjunction with the linear movement of the metal screw. It is possible to provide an insulating spacer that can smoothly perform a fastening operation of a metal screw against an operation of falling down to the outside and that can be prevented from being damaged due to excessive force applied to the insulating spacer.

According to the third aspect of the present invention, in addition to the above-described effects, a smoother operation is possible with respect to the operation in which the sandwiching portion falls outward due to elastic deformation in conjunction with the linear movement of the metal screw. Also, it is possible to provide an insulating spacer capable of preventing breakage or the like due to excessive force applied to the insulating spacer.

According to the fourth aspect of the present invention, in addition to the above effects, in the step of inserting the metal frame into the screw insertion hole,
The insulating spacer can be easily fixed via the projection, and the insulating spacer can be prevented from spontaneously falling off in the subsequent step, so that an insulating spacer with good workability can be provided.

According to the fifth aspect of the present invention, in addition to the above effects, in the step of inserting the insulating spacer into the screw insertion hole of the metal frame, the insulating spacer can be easily and completely fixed, so that the insulating step is performed in the subsequent steps. Natural fall-off of the spacer can be completely prevented, and an insulating spacer with good workability can be provided.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of an insulating spacer according to the present invention, wherein (a) is a front view, (b) is a plan view,
(C) is a perspective view.

FIG. 2 is a view showing a second embodiment of the insulating spacer according to the present invention, wherein (a) is a front view, (b) is a plan view,
(C) is a perspective view.

FIGS. 3A and 3B are views showing a third embodiment of the insulating spacer according to the present invention, wherein FIG. 3A is a front view, FIG.
(C) is a perspective view.

FIG. 4 is a view showing a fourth embodiment of the insulating spacer according to the present invention, wherein (a) is a front view, (b) is a plan view,
(C) is a perspective view.

FIG. 5 is a view showing a fifth embodiment of the insulating spacer according to the present invention, wherein (a) is a front view, (b) is a plan view,
(C) is a perspective view.

FIGS. 6A and 6B are views showing a sixth embodiment of the insulating spacer according to the present invention, wherein FIG. 6A is a front view, FIG.
(C) is a perspective view.

FIGS. 7A and 7B are diagrams showing a seventh embodiment of the insulating spacer according to the present invention, wherein FIG. 7A is a front view, FIG.
(C) is a perspective view.

FIG. 8 is a schematic perspective view for explaining a method of using the insulating spacer of FIGS. 1 to 7;

FIG. 9 is a sectional view showing the operation of the insulating spacer of FIGS. 1 to 3;

FIG. 10 is a sectional view showing the operation of the insulating spacer of FIG.

FIG. 11 is a sectional view showing the operation of the insulating spacer of FIG.

FIG. 12 is a sectional view showing the operation of the insulating spacer of FIG.

FIG. 13 is a sectional view showing an operation of the insulating spacer of FIG. 7;

14A and 14B are cross-sectional views illustrating an example of a conventional insulating collar, in which FIG. 14A is a diagram illustrating a conductive fixed state, and FIG. 14B is a diagram illustrating an insulating fixed state.

FIG. 15 is a view showing an example of a conventional spacer,
(A) is a cross-sectional view, and (b) is a cross-sectional view taken along a plane perpendicular to the cut plane of (a).

16A and 16B are cross-sectional views for explaining the operation of the spacer of FIG. 15, wherein FIG. 16A is a state immediately after the spacer is inserted into the panel, FIG.
(C) is a figure which shows the state by which the fastening of the metal screw was completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation spacer 2 Base part 3 Screw insertion hole 4 Base support part 5 Interposition part 5a Tip part 6 Electronic device 6a Screw hole 7 Metal frame 7a Screw insertion hole 8 Metal screw 8a Screw head 11 Insulation spacer 21 Insulation spacer 25 Insertion Part 25a Tip part 31 Insulating spacer 36 Hinge part 41 Insulating spacer 51 Insulating spacer 57 Convex part 61 Insulating spacer 68 Adhesive

Claims (5)

[Claims] 1. A plate-shaped base portion, a screw insertion hole formed substantially in the center of the base portion, and at least two base supports erected on the base portion near the screw insertion hole. An insulating spacer, wherein a portion and a sandwiching portion connected to each end of the base support portion are integrally formed of an insulating material. 2. The insulating spacer according to claim 1, wherein the inside of the distal end of the sandwiching portion is formed in a curved shape. 3. At least one of each of said base supports
The insulating spacer according to claim 1, comprising two hinge portions. 4. The insulating spacer according to claim 1, wherein at least one convex portion is provided on an outer surface of each of the base support portions. 5. The insulating spacer according to claim 1, wherein an adhesive is applied to each of the sandwiching portions or at least a part of the base portion.