KR100606122B1 - Switch - Google Patents

Abstract

It is an object of the present invention to provide a low-cost switch which is easy to produce and has stable operation characteristics without requiring high component precision and assembly precision as a component, and as a means for doing this, the movable contact piece 15 is operated. A contact mechanism 10 in which the contact 15a is foldably opposed to the fixed contact 13a, a base 20 insert-molded with the contact mechanism 10, and an operation portion 41 from one end side. Projecting laterally, protruding the operation ribs 42 on the lower surface, and operating lever 40 provided slidably on the upper surface of the base 20, and the return spring positioned on the base 20 ( 50 and the cover 60 engaged with the base 20. And based on the external force loaded to the operation part 41 of the said operation lever 40 from the horizontal direction, the said operation lever 40 slides against the spring force of the said return spring 50, and the said operation lever The operation rib 42 of 40 presses the movable contact piece 15 to open and close the contact.

switch

Description

Switch {SWITCH}

BRIEF DESCRIPTION OF THE DRAWINGS The whole perspective view which shows 1st Embodiment of the switch which concerns on this invention.

FIG. 2 is an exploded perspective view of the switch shown in FIG. 1. FIG.

3 is an exploded perspective view of the switch shown in FIG. 1 viewed from another angle;

4 is a perspective view illustrating a manufacturing process of the contact mechanism according to the first embodiment.

5 is a perspective view illustrating a manufacturing process following FIG. 4;

6 (A) and 6 (B) are a plan view and a sectional view showing before operation of the switch according to the first embodiment.

7A and 7B are a plan view and a sectional view showing the operation of the switch according to the first embodiment.

8A and 8B are a plan view and a sectional view of the switch according to the first embodiment after operation.

9 is an overall perspective view showing a second embodiment of the switch according to the present invention;

10 is an exploded perspective view of the switch shown in FIG. 9;

11 is an exploded perspective view of the switch shown in FIG. 9 viewed from another angle;

The perspective view which shows the manufacturing process of the contact mechanism which concerns on 2nd Embodiment.

FIG. 13 is a perspective view illustrating a manufacturing process following FIG. 12. FIG.

14A and 14B are a plan view and a sectional view showing before operation of the switch according to the second embodiment.

15A and 15B are a plan view and a sectional view of the switch according to the second embodiment during operation.

16A and 16B are a plan view and a sectional view showing the after operation of the switch according to the second embodiment.

Fig. 17 is an overall perspective view of a switch showing an application example of a contact mechanism according to the present invention.

18 is an exploded perspective view of the switch shown in FIG. 17.

19 is an exploded perspective view of the switch illustrated in FIG. 17 viewed from another angle;

20 is a perspective view showing a manufacturing process of the contact mechanism of the switch shown in FIG. 17;

21 is a perspective view of a manufacturing process following FIG. 20;

Fig. 22 is an overall perspective view of a switch showing another example of application of a contact mechanism according to the present invention.

FIG. 23 is an exploded perspective view of the switch shown in FIG. 22;

24 is an exploded perspective view of the switch illustrated in FIG. 22 viewed from another angle;

FIG. 25 is a perspective view showing a manufacturing process of the contact mechanism of the switch shown in FIG. 22; FIG.

FIG. 26 is a perspective view of a manufacturing process following FIG. 25;

The perspective view which shows the manufacturing process of the contact mechanism of 3rd embodiment of the switch which concerns on this invention.

FIG. 28 is an enlarged perspective view of FIG. 27B. FIG.

29A to 29C are cross-sectional views showing before, during and after operation of the switch, respectively;

♠ Explanation of symbols on the main parts of the drawings.

10... . Contact mechanism 11.. Lead frame

13, 14, 16... Leads 13a, 16a... Fixed contacts

13b, 14a... Flexure 15... Movable contact piece

15a... Movable contact 20.. Base

21... Sidewall 21c... Notch

21d... Bearing recess 22... Storage recess

23... . Support 24.. Swelling cotton

25... Central axis 30... Back sheet

31... Top sheet 40... joystick

41... Control unit 42. Rib for operation

43.. Guide rib 44.. Insertion axis

46... Pedestal 46a... Center hole

47... Rotating shaft 50.. Return spring

51... Arm 60... cover

61... Notch portion 62... Engagement hole

Technical Field

The present invention relates to a switch, in particular a micro switch having a contact mechanism formed by cutting from a lead frame.

Conventional technology

Conventionally, as a micro switch, there exists a switch apparatus which can operate freely from a horizontal direction (for example, refer Unexamined-Japanese-Patent No. 2001-229767).

However, in the switch device described above, the free end of the arm extending from the coil spring is used as the movable contact, and the clip-shaped fixed contact made of the leaf spring is disposed on the movement trajectory of the free end of the arm. And the electrical connection is aimed at by pushing the free end of the said arm to the said clip-shaped fixed contact. For this reason, since high component precision and assembly precision are required as a component, it takes time to produce, raises cost, and it is easy to become unstable operation characteristic. In particular, in order to use the free end of the arm of the coil spring as a movable contact, it is necessary to perform noble metal plating on the coil spring, which causes a problem of higher cost.

 SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a low-cost switch which is easy to produce and has stable operation characteristics without requiring high component precision and assembly precision as a component.

In order to achieve the above object, the switch according to the present invention is formed by inserting the contact mechanism and the contact mechanism in which the movable contact located at the free end of the movable contact piece supported on the other hand so as to be foldable against the fixed contact, and the contact mechanism, A base in which the movable contact piece and the fixed contact can be visually distinguished from the direction, an operation lever projecting from the one end side to the side, protruding an operation rib on the lower surface, and slidably mounted on the upper surface of the base; A return spring positioned on the base and providing a return force to the operation lever, and a cover engaged with the base to prevent the operation lever and the return spring from falling off; The operating lever against the spring force of the return spring based on the loaded external force Sliding movement, and by pressing down the operative rib and the movable contact piece of the operation lever is configured to open and close the contacts.

According to the present invention, on the one hand, the movable contact of the supported movable contact piece is opposed to the fixed contact so as to be foldable, so that the movable contact piece is pushed down and the movable contact is folded to the fixed contact. For this reason, since the high precision and the assembly precision of a component are not required with a component like the conventional example, the switch which is easy to produce and which has stable operation characteristics can be obtained.

In embodiment which concerns on this invention, you may form a contact mechanism by pressing a lead frame.

According to this embodiment, a contact mechanism can be continuously produced and production cost can be reduced. In particular, since the precious metal plating is partially performed on the lead frame in advance, it is not necessary to perform the precious metal plating on the coil spring serving as the movable contact as in the conventional example. For this reason, a switch which has few production processes and is cheaper can be obtained.

In another embodiment, the plurality of movable contact pieces constituting the contact mechanism may be provided in parallel, and the movable contact pieces may be pressed and released respectively by a plurality of operation ribs arranged on the rear surface of the operation lever to open and close the contact.

According to this embodiment, since a some circuit can be opened and closed, a switch with a wide use can be obtained.

In another embodiment, the contact mechanism may be distinguished by integrating a sheet on at least a lower surface of the upper and lower surfaces of the base.

According to this embodiment, since a contact mechanism is distinguished, invasion of the flux at the time of mounting on a printed circuit board can be prevented. In particular, when the sheet is bonded together on the upper and lower surfaces of the base, the contact mechanism can be sealed in a predetermined space, whereby intrusion of dust, corrosive gas, or the like can be reliably prevented. For this reason, operation failure can be prevented, reliability can be improved, and life can be extended.

In another embodiment, a swelling surface that mimics a curved movable contact piece in the upper surface of the base may be formed on both sides of the movable contact piece, and an upper surface sheet may be adhesively integrated with the swelling surface.

According to this embodiment, the upper surface sheet | seat which mimics the movable movable piece can be adhesively integrated with the upper surface of a base. For this reason, the operation | movement of the operation rib with respect to a movable contact piece becomes smooth, the smooth contact opening and closing can be performed, the damage of a sheet can be prevented, and life is extended.

In another embodiment, the lower surface sheet may be a double-sided tape which apply | coated the adhesive to the surface.

According to this embodiment, since it can temporarily fix when mounting the switch which concerns on this invention on a printed board, there exists an effect that workability improves.

EMBODIMENT OF THE INVENTION Embodiment which concerns on this invention is described according to attached drawing of FIGS.

As shown in FIGS. 1-8, the 1st Embodiment which concerns on this invention is the base 20 provided with the contact mechanism 10 which can open and close two circuits, and the upper and lower surfaces of the said base 20. FIG. The lower surface sheet 30 and the upper surface sheets 31 and 31, the operation lever 40, the return spring 50, and the cover 60 which are each integrally bonded to each other are comprised.

The contact mechanism 10 of the base 20 is formed of a lead frame 11 in which a tie bar 12 is carried out at a predetermined pitch by press working as shown in FIGS. 4 and 5. .

That is, the pair of leads 13 and 14 are respectively carried out from both sides of the tie bar 12 so as to extend (FIG. 4A). The fixed contact 13a is arrange | positioned at the free end of the said lead 13, and the movable contact piece 15 is formed at the free end of the said lead 14. Then, after press working on the movable contact piece 15 to bend, press work is formed on the leads 13 and 14, respectively, to form the bent portions 13b and 14a, respectively. The movable contact pieces 15 are brought close to the tie bars 12, respectively (FIG. 4B). As a result, the movable contact 15a of the movable contact piece 15 faces the fixed contact 13a so as to be foldable at a predetermined distance between the contacts (FIG. 4C). After insert molding the base 20 around the tie bar 12 of the lead frame 11 (FIG. 5A), the leads 13 and 14 are cut from the lead frame 11. By doing so, the base 20 is completed (FIG. 5B).

The base 20 protrudes the side walls 21 and 21, respectively, at the upper edges of both side edge portions, and accommodates the return spring 50 to be described later between the movable contact pieces 15 and 15. (22) is formed. At one end of the storage recess 22, a support 23 supporting the return spring 50 protrudes. Then, on the upper surface of the base of the side wall 21 and the upper surface of both sides of the storage recess 22, a swelling surface 24 for adhesively integrating the upper sheet 31, 31 is formed, respectively. Further, protrusions 21a and 21b for locking the cover 60 to be described later are formed on the outer surfaces of the side walls 21 and 21, respectively.

Then, the bottom sheet 30 is adhesively integrated on the bottom surface of the base 20, and the top sheets 31 and 31 are adhesively integrated on the bulging surface 24, thereby providing the fixed contact 13a and movable contact. The piece 15 is sealed in a predetermined space. In particular, since the top sheets 31 and 31 are integrally bonded to the swelling surface 24, the top sheets 31 and 31 themselves are curved to mimic the movable contact piece 15. According to the present embodiment, by preventing the intrusion of dust, corrosive gas, etc., there is an advantage that the malfunction of the operation can be prevented, the contact reliability is improved and the life is extended.

In addition, the top sheet is capable of withstanding at least 100,000 to 200,000 opening and closing operations, for example, polyimide and polyethylene fluoride (registered Teflon) are used.

As shown in FIGS. 2 and 3, the operation lever 40 has a planar shape that can be slidably disposed on an upper surface of the base 20. In particular, one end side of the operation lever 40 is provided with an isosceles triangle-shaped operation portion 41 that can cope with external forces from left and right and from the front. Moreover, the operation ribs 42 and 42 for pushing down the said movable contact pieces 15 and 15 respectively protrude in parallel on the both sides of the back surface of the said operation lever 40. As shown in FIG. In addition, a guide rib 43 slidably fits into the storage recess 22 of the base 20 at the center of the rear surface of the operating lever 40, and the insertion shaft 44 is moved from one end thereof. Protruding. The insertion shaft 44 may be inserted into a return spring 50 made of a coil spring to be described later.

The return spring 50 is for imparting a magnetic return force to the operation lever 40, can be stored in the storage recess 22 of the base 20, and further includes the operation lever 40. It is a coil spring that can insert the insertion shaft 44 of.

The cover 60 has a planar shape that can cover the upper surface of the base 20, and is engaged with the engaging projections 21a and 21b of the base 20 on both side walls formed by bending vertically, respectively. The notch part 61 and the engagement hole 62 are provided.

In assembling the switch according to the present embodiment, the bottom surface 30 of the base 20 into which the contact mechanism 10 is insert-molded is integrally bonded to the lower surface sheet 30, and the swelling surface 24 of the base 20 is integrated. The top sheets 31 and 31 are integrally bonded to each other. Subsequently, the return spring 50 inserted into the insertion shaft 44 of the operation lever 40 is positioned in the storage recess 22 of the base 20. Then, assembling is completed by engaging the notches 61 and the engaging holes 62 of the cover 60 to the engaging projections 21a and 21b of the base 20, respectively (Fig. 1).

6A and 6B, when external force is applied to the operation lever 40 from arrows I, II, and III directions, the spring force of the return spring 50 is opposed. The operation lever 40 is press-fitted along the storage recess 22. For this reason, since the operation rib 42 presses down the movable contact piece 15 using the upper sheet 31, the movable contact 15a contacts the fixed contact 13a (FIG. 7A). , (B)). Moreover, when the operation lever 40 is press-fitted, the movable contact 15a will press-contact with the fixed contact 13a by predetermined contact pressure (FIG. 8 (A), (B)). Subsequently, when the aforementioned load is released, the operation lever 40 is returned by the spring force of the return spring 50, the movable contact piece 15 is returned to its original position, and the movable contact 15a is fixed. It opens from the contact 13a.

9-16 is a switch provided with the contact mechanism 10 which can open and close one circuit as shown in FIGS. The same parts as in the first embodiment will be described with the same reference numerals.

12 and 13, the contact mechanism 10 of the base 20 is formed of a lead frame 11 in which the tie bar 12 is carried out at a predetermined pitch by press working.

That is, the pair of leads 13 and 14 are respectively carried out from both sides of the tie bar 12 so as to extend (FIG. 12A). On the other hand, a fixed contact 13a is provided at the free end of the lead 13, and an auxiliary tongue piece 13c serving as a lead is extended. The movable contact piece 15 is extended to the free end of the said other lead 14 which remain | survives, and the auxiliary tongue piece 14b used as a lead is extended. After the press working on the movable contact piece 15 is bent, the press contact is formed on the lead 14 to form the bent portion 14a, thereby forming the movable contact piece 15 on the tie bar 12. Approach For this reason, the movable contact 15a of the said movable contact piece 15 opposes the said fixed contact 13a so that folding is possible at predetermined distance (FIG. 12 (B), (C)). After insert-molding the base 20 on both sides of the tie bar 12 of the lead frame 11 (FIG. 13A), the base 20 is completed by cutting the leads 13 and 14. (FIG. 13B).

The base 20 protrudes sidewalls 21 and 21 at both edges of the upper surface, and accommodates the return spring 50 at positions adjacent to the movable contact piece 15. ) Are formed in parallel. And the support part 23 which supported the said return spring 50 is formed in the one end side of the said storage recessed part 22. As shown in FIG. In addition, on both sides of the movable contact piece 15, a swelling surface 24 for adhesively integrating the top sheet 31 is formed. Further, protrusions 21a and 21b for locking the cover 60 to be described later are formed on the outer surfaces of the side walls 21 and 21, respectively.

Then, the bottom sheet 30 is adhesively integrated on the bottom surface of the base 20, and the top sheet 31 is adhesively integrated on the bulging surfaces 24 and 24, whereby the fixed contact 13a and the movable contact are made. The piece 15 is sealed in a predetermined space. In addition, since the top sheet 31 is integrally bonded to the swelling surface 24, the top sheet 31 is curved to mimic the movable contact piece 15 that the top sheet 31 itself is curved. According to the present embodiment, by preventing the intrusion of dust, corrosive gas, etc., there is an advantage that the malfunction of the operation can be prevented, the contact reliability is improved and the life is extended.

The said operation lever 15 has a planar shape which can be slidably arrange | positioned on the upper surface of the said base 20, as shown to FIG. 10 and FIG. In particular, one end side of the operation lever 40 is provided with an almost right triangle-shaped operation portion 41 that can cope with external forces from the left side and the front side. Moreover, the operation rib 42 which presses the said movable contact piece 15 is protruded in the center of the back surface of the said operation lever 40. As shown in FIG. In addition, a guide rib 43 slidably fits into the storage recess 22 of the base 20 at one rim of the rear surface of the operation lever 40, and at the same time, the guide rib 43 ), The insertion shaft 44 extends.

The return spring 50 is for imparting a magnetic return force to the operation lever 40, can be stored in the storage recess 22 of the base 20, and further includes the operation lever 40. It is a coil spring that can insert the insertion shaft 44 of.

The cover 60 has a planar shape that can cover the upper surface of the base 20, the furnace is engaged with the engaging projections (21a, 21b) of the base 20 on both side walls bent vertically, respectively. The tooth 61 and the engagement hole 62 are provided.

In assembling the switch according to the present embodiment, the bottom surface 30 of the base 20 into which the contact mechanism 10 is inserted is formed by adhesive integration of the lower surface sheet 30 and the swelling surface 24 of the base 20. The upper sheet 31 is integrally bonded to each other. Subsequently, the return spring 50 inserted into the insertion shaft 44 of the operation lever 40 is positioned in the storage recess 22 of the base 20. Then, assembling is completed by engaging the notches 61 and the engaging holes 62 of the cover 60 to the projections 21a and 21b of the base 20, respectively (Fig. 9).

Then, as shown in Figs. 14A and 14B, when an external force is applied to the operation lever 40 in the directions of arrows I and II, the operation lever (A) against the spring force of the return spring 50 is applied. 40 is press-fitted along the receiving recess 22. For this reason, since the operation rib 42 presses down the movable contact piece 15 using the top sheet 31, the movable contact 15a contacts the fixed contact 13a (FIG. 15A). , (B)). Moreover, when the operation lever 40 is press-fitted, the movable contact 15a will press-contact with the fixed contact 13a by predetermined contact pressure (FIG. 16 (A), (B)). Subsequently, when the aforementioned load is released, the operation lever 40 is returned by the spring force of the return spring 50, the movable contact piece 15 is returned to its original position, and the movable contact 15a is fixed. It opens from the contact 13a.

In the above-described embodiment, the case where the lower surface sheet 30 and the upper surface sheet 31 are integrally bonded to the base 20 has been described. However, the lower surface sheet 30 and the upper surface sheet 31 may be suitably used as necessary. , It is not necessary.

In addition, the use of a double-sided tape for the lower surface sheet 30 has the advantage that the switch can be temporarily fixed by positioning the switch on a substrate after separating the switch from the release sheet.

In addition, although the curvature of the said swelling surface 24 is exactly same as the curvature of the curved part of the movable contact piece 15, it is good to just be similar.

17-21, the lead frame 11 which concerns on embodiment mentioned above rotates the rotary operation lever 40 by the external force of two horizontal directions, and opens and closes two circuits, for example. Applicable to the switch. In addition, the same code | symbol is attached | subjected to the same part as embodiment mentioned above, and detailed description is abbreviate | omitted.

That is, the contact mechanism 10 formed by the lead frame 11 (FIG. 20) similar to 1st Embodiment is insert-molded in the base 20 (FIG. 21 (A)), and the leads 13 and 14 are carried out. The base 20 is separated from the lead frame 11 by cutting the (20 (B)). The lower and lower sheets 30 and the upper and upper sheets 31 and 31 are integrally bonded to the upper and lower surfaces of the base 20. Subsequently, the center hole 46a of the rotary operation lever 40 is inserted through the central axis 25 of the base 20. Moreover, the furnace which fitted the return spring 50 to the pedestal part 46 of the said operation lever 40, and provided the arms 51 and 51 of the said return spring 50 to the side wall 21 of the said base was carried out. It latches on teeth 21c and 21c. Finally, the notches 61 and the engaging holes 62 of the cover 60 are respectively engaged with the projections 21a and 21b of the base 20 to complete the switch (Fig. 17). In addition, 45 is a reinforcing rib 45.

In addition, the lead frame 11 which concerns on embodiment mentioned above opened and closed one circuit with the push-in operation lever 40 which drives according to the external force of an up-down direction, for example as shown in FIGS. 22-26. It can also be applied to switches. The same parts as in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, the contact mechanism 10 formed by the lead frame 11 (FIG. 25) similar to 2nd Embodiment is insert-molded in the base 20 (FIG. 26 (A)), and the leads 13 and 14 are carried out. The base 20 is detached from the lead frame 11 by cutting (Fig. 26 (B)). The lower surface sheet 30 is attached to the bottom surface of the base 20, and the upper surface sheet 31 is integrally bonded to the expanded surface 24. Subsequently, the rotation shaft 47 of the rotary operation lever 40 is fitted into the bearing recess 21d formed on the side wall 21 of the base 20. In addition, the return spring 50 is positioned in the storage recess 48 of the operation lever 40, and the arms 51 and 51 of the return spring 50 are positioned on the base 20 and the cover 60. Respectively). Finally, the notches 61 and the engaging holes 62 of the cover 60 are respectively engaged with the projections 21a and 21b of the base 20, thereby completing the switch (Fig. 22). However, for convenience of explanation, the upper sheet 31 and the cover 60 are not shown.

Although the above-mentioned embodiment demonstrated all the cases which have only an upper contact, it is not necessarily limited to this, For example, like the 3rd embodiment shown in FIGS. 27-29, an upper contact You may apply to the contact mechanism 10 which has 13a and the normally closed contact 16a. It should be noted that the same parts as in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, in the contact mechanism 10 of the base 20, as shown in FIG. 27, the tie bar 12 is carried out from the lead frame 11 by pressing. Three sets of leads 13, 14, and 16 are extended from both sides of the tie bar 12 (FIG. 27A). The upper fixed contact 13a is provided at the free end of the lead 13, and the upper closed contact 16a is provided at the free end of the lead 16. As shown in FIG. A movable contact piece 15 extends at the free end of the lead 14 remaining, and an auxiliary tongue piece 14b made of lead extends (FIG. 27A).

The lead 11 is pressed to short-circuit the upper fixed contact 13a, while the upper closed contact 16a is bent, and the movable contact piece 15 is bent. For this reason, the movable contact 15a of the said movable contact piece 15 becomes the height located between the upper fixed contact 13a and the said normally closed fixed contact 16a (FIG. 27B, FIG. 28). ). In addition, by forming the bent portions 13b and 14a in the leads 13 and 14 by pressing, the upper fixed contact 13a and the movable contact piece 15 are brought closer to the tie bar 12 (FIG. 27 ( C)). For this reason, the movable contact 15a of the movable contact piece 15 is located between the opposing upper fixed contact 13a and the normally closed fixed contact 16a, and the said movable contact of the said movable contact piece 15 ( 15a) comes into contact with the normally closed fixed contact 16a.

Furthermore, after insert-molding the base 20 on both sides of the tie bar 12 of the lead frame 11 (Fig. 27 (D)), the leads 13, 14, The base 20 is completed by cutting 16).

And as shown in FIG. 29, when an external force is loaded on the operation part 41 of the said operation lever 40, the operation lever 40 is press-fitted against the spring force of a return spring which is not shown in figure. For this reason, since the operation rib 42 presses down the movable contact piece 15 using the upper sheet 31, after the movable contact 15a opens from the upper closed fixation contact 16a, the upper fixed contact ( 13a) (FIG. 29B). Moreover, when the operation lever 40 is press-fitted, the movable contact 15a will press-contact the upper fixed contact 13a by predetermined contact pressure (FIG. 29 (C)). Subsequently, when the above-mentioned load is released, the operation lever 40 is returned by the spring force of the return spring, and the movable contact piece 15 returns to its original position, so that the movable contact 15a is the upper fixed contact ( After opening from 13a), it contacts the normal closing contact 16a.

In addition, the contact mechanism 10 which has the above-mentioned upper fixed contact 13a and the upper closed fixed contact 16a is applicable to all the above-mentioned embodiment and application example.

In addition, the switch mentioned above can be applied also when the contact mechanism 10 has only a normally closed contact, and also when the upper fixed contact and the normally closed contact are provided together.

In the switch according to the present invention, the movable contact of the movable contact piece supported on the one hand is foldably opposed to the fixed contact, the movable contact piece is pushed down and the movable contact is folded to the fixed contact. For this reason, since the high precision and assembly precision of a component are not required with a component like the conventional example, it is easy to produce and has the effect of obtaining a cheap switch with stable operation characteristics.

Claims (6)

On the other hand, the contact mechanism which folds the movable contact located in the free end part of the movable contact piece supported on the fixed contact so that the fixed contact is foldable, A base in which the contact mechanism is insert molded and the movable contact piece and the fixed contact can be visually distinguished from the vertical direction; An operation lever which protrudes from the one end side to the side and protrudes an operation rib on the lower surface, and is slidably mounted on the upper surface of the base; A return spring positioned on the base and applying a return force to the operation lever; A cover for engaging the base to prevent the operation lever and the return spring from falling off; The operating lever slides against the spring force of the return spring based on an external force loaded from the horizontal portion in the operating portion of the operating lever, and the operating rib of the operating lever presses the movable contact piece to open and close the contact. , And the contact mechanism is formed by pressing a lead frame to the lead frame. delete The method of claim 1, And a plurality of movable contact pieces constituting the contact mechanism, and pressing and releasing the movable contact pieces, respectively, with a plurality of operation ribs arranged on the rear surface of the operation lever to open and close the contact. The method of claim 1, A switch, characterized in that the contact mechanism is distinguished by at least one of the upper and lower surfaces of the base by adhesively integrating a sheet. The method of claim 1, A swelling surface that mimics a curved movable contact piece among upper surfaces of the base is formed on both sides of the movable contact piece, and an upper surface sheet is adhesively integrated on the swelling surface. The method of claim 1, A switch, characterized in that the lower surface sheet is a double-sided tape coated with adhesive on the surface.

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