JPH112686A - Fixing structure of pointer stopper pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembling workability by automating fixing of a pointer stopper pin and also apply it to work for assembling the pointer stopper pin after laminating a dial and a light guide plate. SOLUTION: A flange part 5 is abutted on the surface of a dial 1 by substantially vertically pressing a shaft part to the dial 1 by a pointer stopper pin 3, and a neck part 6 is inserted into a through hole 1a. The neck part 1a is immersed in a molten adhesive 9 in the recess part 8 of a light guide plate 2, and since it is locked and fixed on the light guide plate 2 through the adhesive 9 by solidification of the adhesive 9, the dial 1 is not reversed at the time of fixing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a pointer stopper pin mounted on a dial of an instrument to determine a stop position of a pointer.

[0002]

2. Description of the Prior Art FIG.
00 shows a fixing structure of 00. This pointer stopper pin 100
Is a shaft 101 with which a pointer (not shown) is in contact, and the shaft 1
01, and a neck 103 protruding downward from the flange 102. The flange 102 is brought into contact with the surface of the dial 1, and the neck 103 is The dial 1 is inserted into a through hole 1a formed in the dial 1 and is fixed by caulking 104 or welding the insertion end.

The dial 1 on which the pointer stopper pin 100 is fixed as described above is laminated on the light guide plate 2 and forms a sub-assembly together with an inner machine (not shown) to be incorporated in an appropriate case to form a desired instrument. At this time, the light guide plate 2 is formed with a recess 2a at a position corresponding to the through hole 1a of the dial 1, and the dial 1 is attached to the light guide plate 2 by locating the caulking portion 104 in the clearance recess 2a. Can be laminated.

[0004]

However, it is difficult to automate such a fixing structure of the pointer stopper pin 100 because the dial 1 needs to be inverted, and in particular, various types of devices such as a speedometer, a tachometer, a fuel gauge, a water temperature gauge and the like are required. In the case of a combination meter incorporating an instrument, it is necessary to fix the pointer stopper pin 100 by crimping 104 or welding for each instrument, which has a problem that the assembling workability is reduced.

Further, the fixing structure of the pointer stopper pin 100 is applicable only in the above-described sub-assembly type assembling operation mode, and the operation mode of assembling the pointer stopper pin 100 after the dial 1 and the light guide plate 2 are laminated. However, there is also a problem that this is not applicable.

Therefore, the present invention can improve the assembling workability by automating the fixing of the pointer stopper pins, and can be applied to an operation mode of assembling the pointer stopper pins after laminating the dial and the light guide plate. It is an object to provide a possible pointer stopper pin fixing structure.

[0007]

In order to achieve the above object, an invention according to claim 1 is a fixing structure of a pointer stopper pin which is mounted on a dial of an instrument and determines a stop position of the pointer. The stopper pin is composed of a shaft portion with which the pointer abuts and a flange portion formed at a lower portion of the shaft portion, and the shaft portion is substantially perpendicular to the dial stacked on the light guide plate. The flange portion is brought into contact with the surface of the dial by pushing it in, and the shaft portion is indirectly or directly engaged with one of the light guide plate and the dial to be fixed. And

According to the first aspect of the present invention, since the pointer stopper pin can be fixed by pushing the shaft portion substantially perpendicularly to the dial, the dial is turned over at the time of the fixing. This eliminates the need for this step, thereby enabling fixing by an automatic machine and easily fixing the dial and the light guide plate even after lamination.

According to a second aspect of the present invention, there is provided the fixing structure of the pointer stopper pin according to the first aspect, wherein the shaft portion has a neck portion which protrudes below the flange portion and has an annular groove formed at the tip. The dial is formed with a through-hole through which the neck is inserted, the light guide plate is formed with a depression corresponding to the through-hole, and the depression is formed in the depression. The melted adhesive is filled, and the pointer stopper pin is pushed into the shaft portion so that the flange portion comes into contact with the surface of the dial and the neck portion is inserted through the through-hole. And is fixed by engaging with the light guide plate via the adhesive by solidification of the adhesive.

Therefore, in the invention according to the second aspect, the pointer stopper pin presses the shaft portion in a direction substantially perpendicular to the dial to bring the flange portion into contact with the surface of the dial and to fix the neck portion of the adhesive. And is indirectly engaged with the light guide plate and fixed. At this time, the dial is also fixed by the adhesive.

According to a third aspect of the present invention, there is provided the fixing structure of the pointer stopper pin according to the first aspect, wherein the shaft portion has a neck portion projecting downward from the flange portion and having an annular groove formed on the outer periphery. The dial is formed with a through hole through which the neck is inserted, and the light guide plate is provided with an engagement cylindrical portion having an engagement protrusion protruding inward in the through hole. The pointer stopper pin is pressed in the shaft portion so that the flange portion comes into contact with the surface of the dial and the neck portion is inserted into the through-hole and pushed into the engagement cylinder portion. The light guide plate is fixedly engaged with the light guide plate by the engagement between the annular groove and the engagement protrusion.

According to the third aspect of the present invention, the pointer stopper pin pushes the shaft portion substantially perpendicularly to the dial to bring the flange portion into contact with the surface of the dial and to engage the neck portion with the engaging cylindrical portion. To be directly engaged with and fixed to the light guide plate.

According to a fourth aspect of the present invention, there is provided the fixing structure of the pointer stopper pin according to the first aspect, wherein the shaft portion protrudes below the flange portion and has an engagement hole formed in the shaft center portion. The dial is formed with a through-hole through which the neck is inserted, and the light guide plate is formed with a depression corresponding to the through-hole, and the light guide plate is formed with a depression. An engagement protrusion is formed at the bottom of the portion so as to project toward the through-hole, and the pointer stopper pin is pressed into the shaft so that the flange portion comes into contact with the surface of the dial and the neck portion is connected to the dial. The light guide plate is fixedly engaged with the light guide plate by inserting the through-hole into the engaging hole, pushing the engaging hole into the engaging protrusion, and engaging the engaging hole and the engaging protrusion with the concave and convex. Features.

According to the fourth aspect of the present invention, the pointer stopper pin pushes the shaft portion substantially perpendicularly to the dial to bring the flange portion into contact with the surface of the dial and to engage the engaging hole in the neck. The neck portion and the light guide plate are directly engaged with each other by being pushed into the engagement projection, and are fixed.

According to a fifth aspect of the present invention, there is provided the pointer stopper pin fixing structure according to the first aspect, wherein the shaft portion is formed with an engaging hole in a shaft center portion thereof. The dial is formed with a through hole, and the light guide plate is formed with an engaging protrusion that projects through the through hole and projects on the dial, and the pointer stopper pin is formed of the shaft portion. The shaft portion is engaged with the light guide plate by pushing the engagement hole into the engagement protrusion and pushing the engagement hole and the engagement protrusion into and out of engagement by pushing the flange portion. It is characterized in that it is fixed in contact with the surface of the dial.

According to the fifth aspect of the present invention, the pointer stopper pin pushes the shaft in a direction substantially perpendicular to the dial, thereby pushing the engaging hole of the shaft into the engaging projection and leading the shaft to the shaft. The light plate is directly engaged with the flange, and the flange is abutted against the surface of the dial to be fixed.

According to a sixth aspect of the present invention, there is provided the pointer stopper pin fixing structure according to the second aspect, wherein the recess communicates with the filling recess filled with the adhesive and the filling recess. And a groove for escaping the adhesive formed by opening a side surface facing the back surface of the dial.

Therefore, in the invention according to claim 6, the adhesive filled in the filling recess overflows from the filling recess and flows into the groove due to the intrusion of the neck by the pushing of the shaft. The adhesive flowing into the groove fixes the dial together with the adhesive in the filling recess.

According to a seventh aspect of the present invention, there is provided the pointer stopper pin fixing structure according to the third aspect, wherein the light guide plate includes a light guide plate including a peripheral portion of the engagement cylinder portion including the engagement cylinder portion. A space portion that is depressed inward from a side surface facing the back surface of the dial and allows the dial to bend when the shaft portion is pushed in between the dial surface and the dial surface. .

According to the present invention, the dial is bent into the space when the shaft is pushed in, and the reaction force of the dial at this time acts on the neck after engagement with the engagement cylinder. The neck can be held without rattling between the dial and the engagement cylinder.

According to an eighth aspect of the present invention, there is provided the pointer stopper pin fixing structure according to the fourth aspect, wherein the light guide plate has a peripheral portion of the depression facing the back surface of the dial of the light guide plate. A space is formed between the dial and the dial, the space being formed between the dial and the dial to allow the dial to bend when the shaft is pushed in.

Therefore, in the invention according to claim 8, the dial is bent into the space when the shaft is pushed in, and the reaction force of the dial at this time acts on the neck after engagement with the engagement projection, so that the neck is bent. Can be held without rattling between the dial and the engagement projections.

According to a ninth aspect of the present invention, there is provided the pointer stopper pin fixing structure according to the first aspect, wherein the shaft portion protrudes downward from the flange portion and has a neck portion formed with an engaging claw at a tip. The dial is formed with a through hole through which the neck is inserted, and the light guide plate allows the engagement claw to rotate around an axis integral with the shaft. A depression is formed corresponding to the through-hole, and the pointer stopper pin is pushed into the shaft so that the engaging claw is located in the depression through the through-hole and the flange is formed by the character. It is characterized in that the engagement claw is engaged with and fixed to the back surface of the dial by rotating around the axis of the shaft portion while being in contact with the surface of the dial.

According to the ninth aspect of the present invention, the pointer stopper pin pushes the shaft portion in a direction substantially perpendicular to the dial and rotates the shaft around the axis so that the dial is rotated by the flange portion and the engaging claw. It is engaged so as to be pinched and is directly fixed to the dial.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an instrument (combination meter) 200 to which the pointer stopper pin fixing structure of the present invention is applied. The instrument 200 is a semi-finished product in the latter half of the entire assembly process, and a wiring board, a module board, an indicator valve, a module board cover, and the like are already assembled on the back side of the case 201. Movement, lens for indicator 202, LCD on the front side of case 201
203, trip knob 204, dial 1, and light guide plate 2
Etc. are assembled. The light guide plate 2 is assembled on a movement, and the dial 1 is laminated on the light guide plate 2.

The pointer stopper pin 3 is attached in a step of fixing the dial 1 of the instrument 200 to the light guide plate 2 with a screw 50 (see FIG. 1). The pointer 51 is attached to a pointer shaft 52 projecting above the dial 1 in a process after this process (see FIG. 2).

That is, the pointer stopper pin 3 is
And a flange 5 formed below the shaft 4. The shaft 4 is pushed into the dial 1 in a direction substantially perpendicular to the dial 1 so that the flange 5 is dialed. 1 and is fixed by indirectly or directly engaging the shaft portion 4 with the light guide plate 2 set on the back side of the dial 1.

Specifically, the pointer stopper pin 3 has a fixing structure as described in the following first to fourth embodiments.

FIGS. 3 and 4 show a fixing structure of the pointer stopper pin 3 according to the first embodiment.

In the first embodiment, the shaft portion 4 of the pointer stopper pin 3 has a neck portion 6 protruding below the flange portion 5 and having an annular groove 7 formed at the tip thereof.
The dial 1 has a through hole 1a through which the neck 6 is inserted, the light guide plate 2 has a recess 8 corresponding to the through hole 1a, and the recess 8 has a molten adhesive. 9 are filled. At this time, the recess 8 is filled with the filling recess 8a.
And a groove 8b formed by opening the side surface facing the back surface of the dial 1 in communication with the filling recess 8a. The melted adhesive 9 is filled in the filling recess 8a, and the adhesive 9 overflowing from the filling recess 8a due to the penetration of the neck portion 6 into the melted adhesive 9 by the pushing of the shaft 4 is formed in the groove 8b.
And escapes to the outside of the escape recess 8 can be prevented. Many thermoplastic resins can be used as the adhesive 9.
After the lamination of the light guide plate 2, the filling recess 8a is filled through the through hole 1a, or the filling recess 8a before the lamination is filled. The neck 6 has an outer diameter whose base end 6 a on the flange 5 side is substantially the same as the diameter of the through-hole 1 a of the dial 1, and the base end 6 a is pushed when the shaft 4 is pushed in. It is fitted tightly into the through hole 1a and inserted into the through hole 1a.

The pointer stopper pin 3 is attached to the dial 1
Is fixed to the light guide plate 2 by screws 50, and then the shaft portion 4 is pushed in a direction substantially perpendicular to the dial 1 (the direction a shown in FIG. 3A) so that the flange portion 5 is placed on the surface of the dial 1. At the same time, the neck 6 is inserted into the melted adhesive 9 through the through hole 1a, and is fixed by engaging the light guide plate 2 via the adhesive 9 by solidification of the adhesive 9 (FIG. 4).

As described above, in the first embodiment, the pointer stopper pin 3 pushes the shaft portion 4 substantially perpendicularly to the dial 1 so that the flange portion 5 abuts on the surface of the dial 1 and the neck portion. 6 is indirectly engaged with and fixed to the light guide plate 2 via the solidified adhesive 9. At this time, the melted adhesive 9 is solidified in the recess 8 without leaking to the surface of the dial 1 by tight fitting of the base end 6a of the neck 6 into the through hole 1a, and at the annular groove 7 of the neck 6 Since it invades and solidifies, the neck 6 and the solidified adhesive 9 can be firmly engaged. The adhesive 9 flowing into the groove 8b adheres and fixes the dial 1 together with the adhesive 9 in the filling recess 8a.

FIGS. 5 and 6 show a structure for fixing the pointer stopper pin 3 according to the second embodiment.

In the second embodiment, the shaft portion 4 of the pointer stopper pin 3 has a neck portion 6 projecting below the flange portion 5 and having an annular groove 10 formed on the outer periphery. A through hole 1 a through which the neck 6 is inserted is formed, and the light guide plate 2 has an engagement protrusion 1 protruding inward.
2 is formed corresponding to the through hole 1a. At this time, preferably, the periphery of the engaging cylinder 11 including the engaging cylinder 11 is depressed inward from the side surface of the light guide plate 2 facing the back surface of the dial 1 as in the present embodiment. When the shaft 4 is pushed between the dial 1 and the dial 1,
The space 13 is formed to allow the flexure. Engaging cylinder 11
Is provided with a split groove 11a and has flexibility in the radial direction.

The pointer stopper pin 3 is attached to the dial 1
Is fixed to the light guide plate 2 by screws 50 (see FIG. 1).
By pushing the shaft portion 4 in a direction substantially perpendicular to the dial 1 (direction a shown in FIG. 5A), the flange portion 5 comes into contact with the surface of the dial 1 and the neck portion 6 passes through the through hole 1a. And is engaged with the light guide plate 2 and fixed by engagement of the annular groove 10 and the engagement projection 12 (see FIG. 6).

As described above, in the second embodiment, the pointer stopper pin 3 pushes the shaft portion 4 in a direction substantially perpendicular to the dial 1 to bring the flange portion 5 into contact with the surface of the dial 1 and the neck portion. The light guide plate 6 is pushed into the engagement tube portion 11 to be directly engaged with the light guide plate 2 and fixed. When the shaft 4 is pushed in, the dial 1 bends into the space 13, and the reaction force of the dial 1 at this time acts on the engaged neck 6, and the neck 6 is engaged with the dial 1 and the engaging cylinder 11. It can be held in a state where there is no play between them.

FIGS. 7 and 8 show a structure for fixing the pointer stopper pin 3 as a modification of the second embodiment.

In this modification, the neck portion 6 is formed to have an annular groove 14 which is wider in the axial direction than the annular groove 10 of the second embodiment, and the engaging cylinder 11 is opposed to the inner wall of the cylinder. It is formed to have inwardly protruding engaging projections 12, which are formed stepwise up and down every half-circle.

The pointer stopper pin 3 has the flange portion 5 abutting against the surface of the dial 1 and the neck portion 6 inserted into the through-hole 1a and pushed into the engagement cylinder portion 11, as in the second embodiment described above. The light guide plate 2 is fixedly engaged with the light guide plate 2 by the engagement between the annular groove 14 and the engagement protrusions 12, 12 (see FIG. 8). The neck 6 has a tip 6b whose upper and lower engaging projections 1
Each time it is guided on each of the slopes 12a, it is pushed into the engagement cylinder 11 while being inclined to the opposite side.

In this modification, the neck 6 has a tip 6
b engages with the lower surface of the lower engaging projection 12 through the engaging cylindrical portion 11 and is guided in a state where the annular groove 14 is supported from both sides by the upper and lower engaging projections 12, 12. As a result, the pointer stopper pin 3 can be more stably fixed. In addition, it is needless to say that this modified example has the same operation and effect as the above-described second embodiment.

FIGS. 9 and 10 show a structure for fixing the pointer stopper pin 3 according to the third embodiment.

In the third embodiment, the shaft portion 4 of the pointer stopper pin 3 has a neck portion 6 projecting below the flange portion 5 and having an engagement hole 15 formed in the shaft center portion. 1 is formed with a through-hole 1a through which the neck 6 is inserted, and the light guide plate 2 is formed with a recess 16 corresponding to the through-hole 1a. 17 is formed so as to project toward the through hole 1a. At this time, the light guide plate 2 is preferably used as in the present embodiment.
In addition, the periphery of the recess 16 is recessed inward from the side of the light guide plate 2 facing the back surface of the dial 1 to allow the dial 1 to bend when the shaft 4 is pushed between the dial 1 and the dial 1. Space 13
To form The engagement hole 15 is an annular recess 15a along the inner peripheral wall.
The engagement projection 17 is formed to have an annular convex portion 17a that fits into the annular concave portion 15a along the outer periphery (see FIG. 10).

The annular concave portion 15a and the annular convex portion 1
7a may be formed on the engaging projection 17 and the engaging hole 15 opposite to the forming side.

The pointer stopper pin 3 is attached to the dial 1
Is fixed to the light guide plate 2 by screws 50 (see FIG. 1).
By pushing the shaft 4 in a direction substantially perpendicular to the dial 1 (direction a shown in FIG. 9A), the flange 5 comes into contact with the surface of the dial 1 and the neck 6 passes through the through hole 1a. The engaging hole 15 is pushed into the engaging protrusion 17 to engage the engaging hole 15 and the engaging protrusion 17 with the concave and convex, thereby engaging and fixing the light guide plate 2 (see FIG. 10).

As described above, in the third embodiment, the pointer stopper pin 3 pushes the shaft portion 4 in a direction substantially perpendicular to the dial 1 to bring the flange portion 5 into contact with the surface of the dial 1 and the neck portion. 6 into the engaging hole 15
7, the neck portion 6 and the light guide plate 2 are directly engaged and fixed. When the shaft portion 4 is pushed in, the dial 1 bends into the space portion 13, and the reaction force of the dial 1 at this time acts on the engaged neck 6, thereby causing the neck 6 to engage with the dial 1 and the engagement protrusion 17.
It can be held in a state where there is no play between them.

FIGS. 11 and 12 show a fixing structure of the pointer stopper pin 3 as a fourth embodiment.

In the fourth embodiment, the shaft portion 4 of the pointer stopper pin 3 is formed by forming an engagement hole 15 in the shaft center portion thereof, and the dial 1 is formed with a through hole 1a. And the light guide plate 2 is inserted through the through-hole 1a to make the dial 1
An upwardly protruding engagement projection 17 is formed. At this time, the engagement projection 17 is formed so as to protrude above the light guide plate 2, is fitted into the through hole 1 a in the lamination of the dial 1, and is formed so as to protrude on a base 18 which is flush with the surface of the dial 1. Engagement hole 1
5 is formed with an annular convex portion 15b along the inner peripheral wall, and the engaging projection 17 is formed with an annular concave portion 17b that fits unevenly to the annular convex portion 15b along the outer periphery (see FIG. 12). Have been.

The annular projection 15b and the annular recess 1
7b may be formed on the engaging projection 17 and the engaging hole 15 opposite to the above-described forming side.

The pointer stopper pin 3 is attached to the dial 1
Is fixed to the light guide plate 2 by screws 50 (see FIG. 1).
The shaft portion 4 is pushed in a direction substantially perpendicular to the dial 1 (a direction shown in FIG. 11A) to push the engagement hole 15 into the engagement projection 17 so that the engagement hole 15 and the engagement projection 17 The shaft 4 is engaged with the light guide plate 2 and the flange 5 is abutted and fixed to the surface of the dial 1 (see FIG. 12).

As described above, in the fourth embodiment, the pointer stopper pin 3 pushes the shaft portion 4 substantially perpendicularly to the dial 1 to push the engagement hole 15 of the shaft portion 4 into the engagement projection 17. Then, the shaft portion 4 and the light guide plate 2 are directly engaged with each other, and the flange portion 5 is fixed by bringing the flange portion 5 into contact with the surface of the dial 1.

FIGS. 13 and 14 show a structure for fixing the pointer stopper pin 3 as a fifth embodiment.

In the fifth embodiment, the shaft portion 4 of the pointer stopper pin 3 has a neck portion 6 protruding below the flange portion 5 and having an engaging claw 20 formed at the tip thereof. The light guide plate 2 is formed with a through hole 1a through which the neck 6 is inserted. The light guide plate 2 has a recess 16 that allows the engagement claw 20 to rotate around the axis integral with the shaft 4 so as to correspond to the through hole 1a. It is formed. The engaging claw 20 is a flange 5
It is integrally formed at the lower end of a small diameter shaft portion 21 formed so as to protrude downward, and forms a gap portion 22 substantially equivalent to the thickness of the dial 1 between the small diameter shaft portion 21 and the flange portion 5. At this time, the through-hole 1a is formed in the dial 1 as a rectangular hole (FIG. 13).
(See (b)), the engaging claw 20 is formed of a plate-like body having a rectangular plane substantially equivalent to the through-hole 1a, and the recess 16
Is formed in a plane circular shape so that the engaging claw 20 located in the recess 16 can rotate around the axis (FIG. 13).
(B)).

The pointer stopper pin 3 is attached to the dial 1
Is fixed to the light guide plate 2 by screws 50 (see FIG. 1).
By pushing the shaft portion 4 in a direction substantially perpendicular to the dial 1 (direction a shown in FIG. 13A), the flange portion 5 comes into contact with the surface of the dial 1 and the neck portion 6 passes through the through hole 1a. When the engaging claw 20 is positioned in the recessed portion 16 and the shaft portion 4 is rotated about the axis in this state (direction b shown in FIG. 13A), the engaging claw 20 is It is fixed by engaging with the back surface. That is, the pointer stopper pin 3 is fixed by fitting the gap portion 22 between the engaging claw 20 and the flange portion 5 to the dial 1 (see FIG. 14).

As described above, in the fifth embodiment, the pointer stopper pin 3 pushes the shaft portion 4 in a direction substantially perpendicular to the dial 1 and rotates the shaft portion around the axis so that the flange portion 5 engages with the engaging claw. 20, the dial 1 is engaged so as to sandwich the dial 1 and is directly fixed to the dial 1.

In the first to fifth embodiments (including the modifications of the second embodiment) described above, each of the pointer stopper pins 3 pushes the shaft portion 4 in a direction substantially perpendicular to the dial 1. Since it can be fixed, the step of inverting the dial 1 at the time of the fixing becomes unnecessary, and
Thereby, fixing by the automatic machine is possible, and the fixing can be easily performed even after the dial 1 and the light guide plate 2 are laminated.

For this reason, in each of the first to fifth embodiments, the workability of assembling can be improved by automatically fixing the pointer stopper pin 3 and the dial 1 can be improved.
It can also be applied to an operation mode of assembling the pointer stopper pin 3 after laminating the light guide plate 2 and the light guide plate 2.

[0058]

As described in detail above, according to the present invention, the following effects can be obtained.

That is, according to the first aspect of the present invention,
Since the pointer stopper pin can be fixed by pushing the shaft portion in a direction substantially perpendicular to the dial, there is no need to perform a process such as inverting the dial at the time of the fixing, and the fixing by the automatic machine can be performed. This makes it possible to improve the assembling workability by automation, and is particularly suitable for the work mode of assembling the pointer stopper pins after laminating the dial and the light guide plate.

According to the second aspect of the present invention, the pointer stopper pin pushes the shaft portion in a direction substantially perpendicular to the dial, thereby causing the flange portion to contact the surface of the dial and solidifying the neck. 2. The pointer stopper in addition to the effect of the invention according to claim 1, since the dial is fixed by indirectly engaging with the light guide plate via an adhesive, and the dial is simultaneously fixed by the adhesive. The pin and the dial are fixed in position by an adhesive without play.

According to the third aspect of the present invention, the pointer stopper pin pushes the shaft portion in a direction substantially perpendicular to the dial to bring the flange portion into contact with the surface of the dial and engage the neck. It is fixed by being pushed into the cylindrical portion and directly engaging with the light guide plate, and the same effect as the effect of the invention described in claim 1 can be obtained.

According to the fourth aspect of the present invention, the pointer stopper pin pushes the shaft portion in a direction substantially perpendicular to the dial to bring the flange portion into contact with the surface of the dial and engage the neck. The holes are pushed into the engagement projections and the neck and the light guide plate are directly engaged with each other to be fixed, so that the same effects as those of the first aspect of the invention can be obtained.

According to the fifth aspect of the present invention, the pointer stopper pin pushes the shaft portion in a direction substantially perpendicular to the dial to push the engagement hole of the shaft portion into the engagement projection to thereby make the shaft stopper pin. The light guide plate and the light guide plate are directly engaged, and the flange portion is fixed by bringing the flange portion into contact with the surface of the dial, so that the same effect as the effect of the invention described in claim 1 can be obtained.

According to the sixth aspect of the present invention, the adhesive filled in the filling recess overflows from the filling recess due to the intrusion of the neck by pushing the shaft, flows into the groove, and flows into the groove. 4. The dial is fixed to the dial together with the adhesive in the filling recess.
In addition to the effects of the described invention, contamination due to external leakage of the adhesive can be prevented, and the dial can be more firmly bonded and fixed.

According to the present invention, the dial is bent into the space when the shaft is pushed in, and the reaction force of the dial at this time acts on the neck after the engagement with the engagement cylinder. As a result, the neck portion can be held in a state where there is no play between the dial and the engaging cylinder portion. Obtainable.

According to the eighth aspect of the present invention, when the shaft is pushed in, the dial is bent into the space, and the reaction force of the dial at this time acts on the neck after engagement with the engagement projection. The neck portion can be held in a state where there is no play between the dial and the engagement projection, so that in addition to the effect of the invention according to the above-mentioned claim 4, it is possible to obtain a more stable fixing state of the pointer stopper pin. Can be.

According to the ninth aspect of the present invention, the pointer stopper pin pushes the shaft in a direction substantially perpendicular to the dial and rotates the shaft around the axis, thereby forming the character by the flange and the engaging claw. The dial is engaged so as to sandwich the dial, and is directly fixed to the dial, so that the same effect as the effect of the first aspect of the invention can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a combination meter as a semi-finished product to which a fixing structure of a pointer stopper pin according to the present invention is applied, showing a process of attaching and screwing a pointer stopper pin.

FIG. 2 is a perspective view of a combination meter as a semi-finished product to which the fixing structure of the pointer stopper pin of the present invention is applied, showing a step of attaching the pointer.

3A and 3B show a fixing structure of a pointer stopper pin according to a first embodiment of the present invention, wherein FIG. 3A is a sectional view of an assembled state shown partially in a side view, and FIG. 3B is a dial in the assembled state; FIG.

FIG. 4 is a sectional view of a fixing structure of a pointer stopper pin as the first embodiment of the present invention.

5A and 5B show a fixing structure of a pointer stopper pin according to a second embodiment of the present invention, wherein FIG. 5A is a cross-sectional view of an assembled state shown partially in a side view, and FIG. FIG.

FIG. 6 is a sectional view of a fixing structure of a pointer stopper pin according to a second embodiment of the present invention.

FIGS. 7A and 7B show a fixing structure of a pointer stopper pin as a modification of the second embodiment of the present invention, wherein FIG. 7A is a cross-sectional view of an assembled state shown partially in a side view, and FIG. FIG. 3 is a plan view of the dial of FIG.

FIG. 8 is a sectional view of a fixing structure of a pointer stopper pin as a modification of the second embodiment of the present invention.

9A and 9B show a fixing structure of a pointer stopper pin according to a third embodiment of the present invention, wherein FIG. 9A is a cross-sectional view of an assembled state shown partially in a side view, and FIG. 9B is a dial in the assembled state. FIG.

FIG. 10 is a sectional view of a fixing structure of a pointer stopper pin according to a third embodiment of the present invention. FIG.

11A and 11B show a fixing structure of a pointer stopper pin according to a fourth embodiment of the present invention, wherein FIG. 11A is a sectional view of an assembled state shown partially in a side view, and FIG. 11B is a dial in the assembled state. FIG.

FIG. 12 is a cross-sectional view of a pointer stopper pin fixing structure according to a fourth embodiment of the present invention.

13A and 13B show a fixing structure of a pointer stopper pin according to a fifth embodiment of the present invention, wherein FIG. 13A is a cross-sectional view of an assembled state shown partially in a side view, and FIG. FIG.

FIG. 14 is a sectional view of a fixing structure of a pointer stopper pin according to a fifth embodiment of the present invention.

FIG. 15 is a cross-sectional view of a conventional pointer stopper pin fixing structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dial 1a Through hole 2 Light guide plate 3 Pointer stopper pin 4 Shaft part 5 Flange part 6 Neck 7,10 Annular groove 8,16 Depression part 8a Filling concave part 8b Groove part 9 Adhesive 11 Engaging cylinder part 12 Engaging convex part 13 Space 15 Engagement hole 17 Engagement projection 20 Engagement claw 51 Pointer 200 Instrument

Claims (9)

[Claims] 1. A fixing structure of a pointer stopper pin mounted on a dial of an instrument and determining a stop position of a pointer, wherein the pointer stopper pin is formed at a shaft portion where the pointer contacts and a lower portion of the shaft portion. And the flange portion is brought into contact with the surface of the dial by pushing the shaft portion in a direction substantially perpendicular to the dial stacked on the light guide plate, A fixing structure of a pointer stopper pin, wherein the shaft portion is indirectly or directly engaged with one of the light guide plate and the dial to be fixed. 2. The fixing structure for a pointer stopper pin according to claim 1, wherein the shaft portion has a neck portion projecting downward from the flange portion and having an annular groove formed at a tip thereof, and the character A through hole through which the neck is inserted is formed in the board, a depression is formed in the light guide plate corresponding to the through hole, and the depression is filled with a molten adhesive. The pointer stopper pin is pushed into the shaft portion so that the flange portion comes into contact with the surface of the dial, and the neck portion penetrates through the through-hole to immerse in the molten adhesive and solidify the adhesive. And a light guide plate fixedly engaged with said light guide plate via said adhesive. 3. The fixing structure for a pointer stopper pin according to claim 1, wherein said shaft portion has a neck portion projecting downward from said flange portion and having an annular groove formed on an outer periphery thereof, and wherein said character is formed. A through-hole through which the neck is inserted is formed in the board, and an engaging cylinder having an inwardly projecting engaging projection is formed in the light guide plate corresponding to the through-hole, The pointer stopper pin pushes the shaft portion so that the flange portion comes into contact with the surface of the dial, and the neck portion is inserted into the through hole to be pushed into the engagement cylinder portion, and the annular groove is engaged with the engagement projection. Characterized in that the pointer stopper pin is fixedly engaged with the light guide plate by engagement with the light guide plate. 4. The pointer stopper pin fixing structure according to claim 1, wherein said shaft portion has a neck portion projecting downward from said flange portion and having an engagement hole formed in a shaft center portion. The dial has a through hole through which the neck is inserted, and the light guide plate has a recess formed in correspondence with the through hole, and an engagement protrusion is formed at a bottom of the recess. Is formed so as to face the through hole, and the pointer stopper pin is pushed into the shaft portion so that the flange portion comes into contact with the surface of the dial and the neck portion passes through the through hole to form the engaging member. A stopper pin is fixedly engaged with the light guide plate by pushing a mating hole into the engaging projection and fitting the engaging hole and the engaging projection into and out of engagement. Construction. 5. The fixing structure for a pointer stopper pin according to claim 1, wherein the shaft portion has an engagement hole formed in an axis portion thereof, and a through hole is formed in the dial. And the light guide plate is formed with an engagement projection that projects through the through-hole and protrudes above the dial, and the pointer stopper pin pushes the shaft portion to engage the engagement hole. The shaft portion is engaged with the light guide plate by being pushed into the engagement protrusion and the engagement hole and the engagement protrusion are unevenly fitted, and the flange portion contacts the surface of the dial. The fixing structure of the pointer stopper pin, characterized by being fixed. 6. The fixing structure for a pointer stopper pin according to claim 2, wherein the recessed portion communicates with a filling recess filled with the adhesive and faces the back surface of the dial through the filling recess. A fixing structure for a pointer stopper pin, comprising: a groove for releasing the adhesive formed by opening a side surface. 7. The pointer stopper pin fixing structure according to claim 3, wherein the light guide plate has a periphery of an engagement tube portion including the engagement tube portion facing a back surface of the dial of the light guide plate. A space for allowing the dial to bend when the shaft is pushed in is formed between the dial and the dial so as to be depressed inward from the side surface to be fixed. 8. The fixing structure for a pointer stopper pin according to claim 4, wherein a peripheral portion of the recess is formed in the light guide plate inwardly from a side surface of the light guide plate facing the back surface of the dial. A space for allowing the dial to bend when the shaft portion is pushed in between the dial and the dial. 9. The fixing structure for a pointer stopper pin according to claim 1, wherein the shaft portion has a neck portion that protrudes downward from the flange portion and has an engaging claw formed at a tip thereof. The dial is formed with a through-hole through which the neck is inserted, and the light guide plate has a recess that allows the engagement claw to rotate around an axis integral with the shaft and corresponds to the through-hole. The pointer stopper pin is pressed into the shaft portion so that the engaging claw is positioned in the recess through the through hole, and the flange portion contacts the surface of the dial, and A fixing structure for a pointer stopper pin, wherein the engaging claw is engaged with and fixed to the back surface of the dial by rotation of the shaft portion around the axis.