JP2958770B2 - Washer with spring washer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer with a spring washer.

[0002]

2. Description of the Related Art For example, a washer with a spring washer is often used, in which elasticity is given at the time of bolting, and a strong bolt can be tightened. Looseness of the bolt can be seen at a glance by the degree of contraction of the spring washer. Conventionally, however, the seat plate is fixed to the spring washer by simply placing the spring washer on a seat plate having a bolt insertion hole, and welding and fixing it at several locations on the outer edge of the spring washer.

[0003] Therefore, the welding operation is very troublesome, not only increases the cost, but also causes a change in the material of the spring washer due to heat at the time of welding, making it impossible to obtain an appropriate spring property and breaking the spring washer. Easier,
There was a problem that the durability also deteriorated.

[0004] Therefore, the actual Hei shown in the conventional example, FIG. 6 3-
As shown in No. 72110, locking pieces 25
Is pushed up on the inner surface of the insertion hole to form a protrusion.
Has been proposed to fix in a non-rotating state, but although the welding problem has been solved, the fastening strength is not sufficient,
The fabrication process is very difficult.

Namely, the engaging piece like this invention shown in FIG. 6
25 is formed by pushing up the inner surface of the insertion hole 22 by burring or the like, but since the insertion hole 22 is a bolt insertion hole, the locking piece 25 is raised up to the last thinly, which hinders insertion of the bolt. This push-up was very cumbersome, as it had to be done.

Specifically, for example, when a projection for forming a locking piece is formed on the inner surface of the insertion hole when the insertion hole 22 is formed, the projection is pushed upward to form a locking piece. In this case as well, the protruding portion should be a small protruding portion of about 1 mm, and this must be pushed upward to start up.
This locking piece 25 is used so as not to interfere with the insertion hole 22 itself.
Pushing up is very troublesome.

Further, since the inner surface of the insertion hole which is pushed up is curved, the above-mentioned pushing-up processing is more difficult, and if there is a slight difference in the hardness of the material of the seat plate, the processing condition is also different. Thin (formed so as not to interfere with the insertion hole 22), it was very troublesome to process it to a certain protruding length, and the material of the seat plate had to be carefully examined . That is, if this locking piece cannot be mass-produced to a predetermined length with a predetermined thickness, the next line process for fastening the spring washer will not be performed smoothly.

Further, in addition to such a problem, the curved inner surface must be pushed up thinly as it is, or a small protrusion provided on the inner surface must be pushed up thinly. Since sufficient sharpness and precision are required, the blade part is worn a lot and maintenance is required frequently, and there is a problem in mold durability.

Further, the locking piece 25 is attached to the spring washer 21.
There is also a problem that cannot be applied to the spring washers 21 having different diameters because of the configuration disposed inside the.

According to the present invention, there is provided an innovative washer with a spring washer which does not deteriorate the fastening strength of the spring washer as compared with the prior art, makes it extremely easy to process the locking piece, and improves the mold durability. It is intended to provide.

[0011]

The gist of the present invention will be described with reference to the accompanying drawings.

A spring in which the spring washer 1 is mounted and fixed on the surface of a seat plate 3 having an insertion hole 2 substantially equal to the inner diameter of the spring washer 1 so that the insertion hole 2 and the center hole of the spring washer 1 communicate with each other. In the washer with a washer, the washer is connected to the insertion hole 2 and
A plurality of bottomed continuous holes 4 are provided in the outer periphery of the insertion hole 2 of the seat plate 3 when viewed from the back surface side of the seat plate which is continuously opened in a state of protruding outward. The connecting hole 2 is provided so that the position of the distal end portion 4A, which is the outwardly protruding side with respect to the hole 2, is located on the outer peripheral position of the spring washer 1 on the surface of the seat plate 3 or slightly outside this outer peripheral position, The bottomed portion 4B of each of the continuous holes 4 is raised in the direction perpendicular to the surface of the seat plate 3 toward the surface of the seat plate 3, and a locking piece 5 is formed upright on the surface of the seat plate 3, and each of the locking portions 5 is formed. The spring washer (1) is provided inside the one-piece part (5), and the locking piece part (5) is pressed against the inner spring washer (1) to abut and fix the spring washer (1) on the seat plate (3). It relates to the washer.

Further, the bottomed portion 4B of the continuous hole 4 is formed in a thin shape, and the outwardly protruding side of each of the continuous holes 4 with respect to the insertion hole 2 is connected, and the tongue is cut out from the bottomed portion 4B. The locking piece part (5) is cut and raised in the direction perpendicular to the surface of the seat plate (3) toward the surface of the seat plate (3), and the locking piece part (5) is formed upright on the surface of the seat plate (3). (1) A washer with a spring washer according to ( 1 ).

3. The washer with a spring washer according to claim 1 , wherein the connecting hole 4 is provided at a position opposed to the insertion hole 2. is there.

Further, the protrusion width dimension relative to the insertion hole 2 of the communication設孔4, according to claim 1 to 3, characterized in that allowed approximately matches the width of the locking piece 5 for raising formed A washer with a spring washer according to any one of the preceding claims.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

The spring washer 1 is fixed on the seat plate 3 provided with the insertion hole 2 and the continuous hole 4 connected to the insertion hole 2 as follows.

The position of the pre-Me the distal inner surface portion 4A serving as the outer protrusion side against insertion hole 2 of each station設孔4, insertion hole of the seat plate 3 2
Is set so as to be located at the outer peripheral position of the spring washer 1 placed so that the center hole communicates with the central hole or at a position slightly outside thereof.

Moreover, the present invention is simple and simple.
One that can form a thin flaky locking piece 5
Then, a continuous hole 4 with a bottom as viewed from the back side of the seat plate is formed around the insertion hole 2.
Open continuously. Cut and raise this bottomed portion 4B to the seat plate surface side
In this way, a thin piece of locking piece 5 is formed upright on the surface of the seat plate.

The spring washer 1 is disposed inside each locking piece 5 as described above, and each locking piece 5 is pressed against the spring washer 1 to fix the spring washer 1 on the seat plate 3. .

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

In this embodiment, a circular insertion hole 2 (excluding the continuous hole 4) is provided in a square seat plate 3, and a circular notched ring-shaped spring washer 1 is fixed on the seat plate 3. This is a case where the present invention is applied to the configuration of FIG.

The perspective view of the completed state of the embodiment in FIG. 1, FIG. 2
FIG. 5 to FIG. 5 show a plan view (back view) and a cross-sectional view showing a manufacturing procedure.

In the present embodiment, the locking piece 5 is not formed at the inner edge of the insertion hole 2 as in the conventional example, but is formed upright at the outer peripheral position of the spring washer 1 using the continuous hole 4. since it is not a method of pushing up the distal inner surface portion 4A of the communicating設孔4, such as by bar-ring machining, flaky engaging piece portion 5 by way cause more processing easier cutting than this
Is formed upright.

That is, in the present embodiment, the bottomed connecting portion is formed so as to be connected to the insertion hole 2 and to be opened in a state of protruding outward from the insertion hole 2 when viewed from the back side of the seat plate. The installation holes 4 are provided at two opposite positions on the outer peripheral portion of the insertion hole 2 of the seat plate 3, and a front end portion 4 </ b> A on the outwardly projecting side of the connection hole 4 with respect to the insertion hole 2
Of the spring washer 1 on the surface of the seat plate 3
The continuous hole 2 is provided so as to be located at the outer peripheral position of or slightly outside the outer peripheral position.

The bottomed portion 4B of each continuous hole 4 is raised in the direction perpendicular to the surface of the seat plate 3 toward the surface of the seat plate 3, and the locking piece 5 is formed upright on the surface of the seat plate 3. I have.

More specifically, the bottomed portion 4B of the continuous hole 4 is formed in a thin shape, and the outwardly projecting side of the continuous hole 4 with respect to the insertion hole 2 is continuously connected. A configuration in which a tongue-shaped locking piece 5 is cut out from the bottomed portion 4B and cut up in the direction perpendicular to the surface of the seat plate 3 toward the surface of the seat plate 3 to raise the locking piece 5 on the surface of the seat plate 3. and then, the communication設孔4, provided at opposite positions relative to the front Symbol insertion hole 2, the protrusion width dimension relative to the insertion hole 2 of the communication設孔4, of the locking piece 5 for raising formed It is configured to approximately match the width dimension.

Therefore, upon manufacture, the position of the front end 4A, which is the outwardly projecting side of each of the continuous holes 4 with respect to the insertion hole 2, is previously mounted such that the center hole communicates with the insertion hole 2 of the seat plate 3. It is set so as to be located at the outer peripheral position of the spring washer 1 to be placed or slightly outside thereof, and a continuous hole 4 having a bottom as viewed from the back side of the seat plate is continuously formed around the insertion hole 2. 4B is cut and raised toward the surface of the seat plate, and a thin piece of locking piece 5 is formed upright on the surface of the seat plate 3.

The spring washer 1 is disposed inside each locking piece 5 as described above, and each locking piece 5 is pressed against the spring washer 1 to fix the spring washer 1 on the seat plate 3. .

Accordingly, the continuous hole 4 having a bottom as viewed from the back side of the seat plate is formed by, for example, cutting or digging down to the insertion hole 2 by ironing.
Without subjected to cumbersome push processing to push whatever circumference example, the ability to form a locking piece portion 5 only by machining cut a bottom portion 4B toward the seat plate surface. In addition, if the bottomed portion 4B has a predetermined thickness, the locking piece portion 5 having a constant length can be always formed with a constant thickness by designing a die (blade portion) for cutting out. It can be easily formed.

Therefore, the locking piece portion 5 having a fixed length can be always formed by extremely simple processing, and the subsequent fixing line process of the spring washer 1 can be smoothly performed one after another without any defect. An extremely suitable breakthrough structure.

Further, since the continuous hole 4 is provided so as to be continuous with the insertion hole 2, it is easy to process the bottomed continuous hole 4.

When the locking piece 5 is cut and raised from the bottomed portion 4B, the locking piece 5 is cut and raised so that the inner edge of the insertion hole 2 (the inner end of the continuous hole 4) becomes the upper end of the locking piece 5. However, in the present embodiment, an opening is cut out from the bottomed portion 4B, and the inner edge of the insertion hole 2 is continuously connected by the remaining bottomed portion 4B at the inner edge of the insertion hole 2 to improve appearance and increase strength. I'm trying.

Further, since the continuous holes 4 are not provided on the entire circumference of the insertion hole 2, they may be provided at positions facing each other enough to hold down and fix the spring washer 1.
There is no problem in mounting the spring washer 1 on the seat plate 3.

In this embodiment, the position of the distal end 4A of the continuous hole 4 on the side protruding outward with respect to the insertion hole 2 is located slightly outside the outer peripheral position of the spring washer 1 on the seat plate 3. As described above, if the locking piece 5 is simply cut and raised as described above to form the locking piece 5 erected, the locking piece 5 is formed at a position close to the outer edge of the spring washer 1. .

Accordingly, the spring washer 1 can be securely fixed by pressing the locking piece 5 against the spring washer 1, and the locking piece 5 is located outside the spring washer 1. consisting, use problem does not occur even when thickly formed slightly on the work depth of the communicating設孔4 than when in the insertion hole 2 side as in the conventional example shown in FIG.

Since the width of the continuous hole 4 protruding from the insertion hole 2 is substantially equal to the width of the locking piece 5, when the bottomed portion 4B is raised, the right and left edges are raised. It also serves as a guide for the pushing movement of the part, and in this regard, the start-up processing is further facilitated.

Also, instead of the conventional push-up processing,
In addition, since the starting process does not require much accuracy, the accuracy of the blade portion is not required as compared with the conventional example, so that the blade portion is less worn and damaged, and in this sense, the mold durability is remarkably improved.

Further, since the formation of the locking pieces 5 is facilitated as described above, even if the material of the seat plate 3 has some hardness, it is not required to be strictly thin. As in the prior art, the material of the seat plate 3 is examined, and the protruding length of the locking piece 5 becomes long or short, making it unusable. Become.

Of course, the thinner the locking piece 5 is, the easier it is to press against the spring washer 1. However, the locking piece 5 is not formed inside the insertion hole 2 as in the conventional example. It is formed to be slightly thicker, and does not have to be pushed out, bent out, or protruded toward the center side of the insertion hole 2 to make it unusable, so that a predetermined thinness is not required. is there. Therefore, in this sense, processing of the bottomed continuous hole 4 is not so difficult.

The locking piece 5 is formed on the outer edge of the spring washer 1. The locking piece 5 is pressed against the spring washer 1 to abut and fix the spring washer 1. May be brought into contact with the outer periphery of the spring washer 1, or the locking piece 5 may be set to a length protruding above the spring washer 1, and the locking piece 5 may be pressed inward by being folded inward, The spring washer 1 may be pressed and fixed to the seat plate 3 from above.

In this case, the locking piece 5 is raised so as to have a longer protruding length than the spring washer 1, and the locking piece 5 is arranged at a lower position of the spring washer 1.

The locking piece 5 formed by pushing up may be pressed against the spring washer 1 as it is. However, the locking piece 5 is once crushed into a flat shape, and then the locking piece 5 is separated from the spring washer 1. You may press it.

For example, the engagement piece 5 is formed to be slightly thicker so as to facilitate the processing of the bottomed continuous hole 4, and then the engagement piece 5 is flattened so as to be easily crushed and pressed. In addition to the above, the protrusion length may be increased so that pressing and contact can be performed from above as described above.

In any case, in the present embodiment, the locking piece 5 having a fixed length can always be easily formed, so that such a processing setting becomes easy.

Further, in this embodiment, since the locking piece 5 is located outside the spring washer 1 in this manner, there is an advantage that the fixing strength of the spring washer 1 is stronger than when the spring washer 1 is located inside the spring washer 1. In addition, even when it is desired to apply a spring washer 1 having a slightly different inner diameter, the spring washer 1 has an advantage that it can be easily applied by adjusting the pressing degree of the locking piece 5.

In order to reinforce the fixing by the locking piece 5,
Other fixing means may be further provided.

[0048]

Since the present invention is constructed as described above, the locking piece for pressing the spring washer is formed not on the inside (insertion hole) of the spring washer but on the outside of the spring washer. reduced and request requesting and locking piece must be a stop piece to a predetermined thinness is formed so as not to cause protrudes into the insertion hole, further even without performing the push processing so far Since the locking piece can be formed upright only by raising the bottomed portion of the continuous hole, the formation of the locking piece is extremely easy, and the locking piece having a fixed length is always used. Since it can be easily formed, the subsequent line process for fastening the spring washer can be performed smoothly, making the production work extremely easy, and a revolutionary washer with spring washer excellent in mass productivity.

According to the second aspect of the present invention, an epoch-making epoch-making which is excellent in practicality and can reliably realize the formation of the locking piece portion having a fixed length by simple cutting-out processing without using the pushing-up processing. Spring washer with washer.

According to the third aspect of the present invention, by providing the continuous holes at opposing positions, the spring washer can be securely fixed by a small number of continuous holes (locking pieces). Spring washer with washer.

[0051] In the invention of claim 4, wherein, by substantially matching the projecting width for insertion hole of continuously arranged holes to the width of the locking piece portion, upon standing Chiage processing side of the communicating設孔edge becomes a guide at the time of processing, it is easy to stand Chiage processing of even this, become more innovative spring washer lock washer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a completed state of the present embodiment .

FIG. 2 is a view illustrating a manufacturing procedure of the present embodiment, and is a plan explanatory view and a cross-sectional view of a seat plate in which an insertion hole is opened in the seat plate.

FIG. 3 is a view showing a manufacturing procedure of the present embodiment, and is a procedure explanatory view showing a back view and a cross-sectional view of a seat plate having a bottomed continuous hole opened from the state shown in FIG. 5;

[4] shows the manufacturing steps of this embodiment, the procedure shows a rear view and a cross-sectional view of a seat plate of a bottom portion caused standing cut into a seat plate surface of the further communication設孔from the state shown in FIG. 6 FIG.

FIG. 5 is a view illustrating a manufacturing procedure of the present embodiment, and is a procedure explanatory view showing a plan view and a cross-sectional view of a completed seat plate in which a spring washer is fixed to the seat plate shown in FIG. 6;

FIG. 6 shows a conventional example that does not rely on welding (Japanese Utility Model Laid-Open No. 3-72110).
FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 spring washer 2 insertion hole 3 seat plate 4 continuous hole 4A tip inner surface, tip 4B bottomed part 5 locking piece

Claims (4)

(57) [Claims] 1. A spring washer 1 is mounted and fixed on a surface of a seat plate 3 having an insertion hole 2 substantially equal to the inner diameter of the spring washer 1 so that the insertion hole 2 and a center hole of the spring washer 1 communicate with each other. In the washer with spring washer described above, the continuous hole 4 having a bottom as viewed from the back surface side of the seat plate, which is continuously connected to the insertion hole 2 and which is opened so as to protrude outward from the insertion hole 2, is provided. A plurality of outer peripheral portions of the insertion hole 2 of the seat plate 3 are provided, and a position of a distal end portion 4A which is an outwardly projecting side of the continuous hole 4 with respect to the insertion hole 2 is located at the outer periphery of the spring washer 1 on the surface of the seat plate 3. The continuous holes 2 are provided so as to be located at positions slightly outside the outer peripheral position, and the bottomed portion 4B of each of the continuous holes 4 stands on the surface side of the seat plate 3 in the direction perpendicular to the surface of the seat plate. Locking piece 5 on the surface of raised seat plate 3
The spring washer 1 is disposed inside each of the locking pieces 5, and the locking pieces 5 are pressed against the inner spring washer 1 to come into contact therewith, and the spring washer 1 is placed on the seat plate 3. Washer with spring washer fixed to 2. A tongue cut out from the bottomed portion 4B by forming a bottomed portion 4B of the continuous hole 4 in a thin-walled shape and making each of the continuous holes 4 project outward from the insertion hole 2 in a continuous state. The locking piece part (5) is cut and raised in the direction perpendicular to the surface of the seat plate (3) toward the surface of the seat plate (3), and the locking piece part (5) is formed upright on the surface of the seat plate (3). A washer with a spring washer according to 1 . 3. The washer with a spring washer according to claim 1 , wherein the continuous hole 4 is provided at a position facing the insertion hole 2 . The 4. A protruding width dimension to the insertion hole 2 of the communication設孔4, according to claim 1 to 3, characterized in that allowed approximately matches the width of the locking piece 5 for raising formed A washer with a spring washer according to any one of the preceding claims.