A switch

Abstract

The utility model discloses a switch, including base, first metal piece, second metal piece, elastic contact piece, upper cover and guide core, be equipped with fixed contact point on second metal piece, the right -hand member of elastic contact piece has movable contact point, and the upside of elastic contact piece is equipped with guide core, is used for receiving the pressing force from outside to press elastic contact piece, and elastic contact piece can be pressed and swing by guide core, make movable contact point and fixed contact point contact, and upper cover is equipped with through -hole, and the upper portion of guide core is inserted in through -hole, the front and rear ends of the upper portion of guide core are equipped with side portion convex rib, and the inner wall of the front and rear ends of through -hole is equipped with guide groove, and side portion convex rib is inserted in corresponding guide groove and is limited by guide groove, and the bottom of guide core is equipped with bottom convex rib, and bottom convex rib and the upside of elastic contact piece abut. The utility model can position guide to guide core, avoid the problem that guide core appears skew sliding and dispersed pressing force direction when pressing, and pressing conduction force balance is even, and touch is stable.

Description

Technical Field

[0001] This utility model relates to a switch. Background Technology

[0002] Microswitches with contacts are used in electronic products such as computer mice, game consoles, and vehicle control devices.

[0003] See patent document CN112424896A, which discloses a switch comprising: a fixed contact; a movable contact piece having flexibility, with one end as a swing fulcrum and the other end as a movable contact; and a guide core that receives external pressure and presses the swing fulcrum of the movable contact piece and the movable contact, causing the movable contact piece to swing under the pressure of the guide core, and the movable contact to contact the fixed contact. Furthermore, the switch includes: a contact buffer member disposed to abut against the movable contact piece; and a buffer member for the force-applying portion disposed to abut against a force-applying portion formed on the movable contact piece, the force-applying portion generating a reaction force against the pressure of the guide core. The switch includes a housing, on the top of which is provided an insertion hole for inserting a pressing member, the pressing member being inserted into the insertion hole, and the upper end of the pressing member protruding from the top of the housing. Patent document CN112424896A enables a movable contact piece to swing by pressing a pressing component, thereby achieving contact between the movable contact and the fixed contact. However, patent document CN112424896A also has the following technical problems: Since there is no limiting and guiding structure between the pressing component and the through hole, the pressing component is prone to skewed sliding and dispersion of the pressing force during pressing. Simultaneously, because the bottom surface of the movable contact piece is flat, the pressing component tilts when the movable contact piece swings, resulting in an unbalanced and uneven pressing force transmission and an unstable touch. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a switch that addresses the shortcomings of the prior art. This switch can limit and guide the guide core, avoiding the problems of the guide core sliding and dispersing the direction of pressing force when pressed. The pressing force is concentrated, balanced and uniform, and the touch is smooth.

[0005] To solve the above-mentioned technical problems, the present invention provides a switch comprising a base, a first metal component, a second metal component, an elastic contact piece, a top cover, and a guide core. The first metal component is mounted on the left end of the base, and the second metal component is mounted on the right end of the base. A fixed contact is provided on the second metal component. The left end of the elastic contact piece has a swing fulcrum, which is connected and cooperates with the first metal component. The right end of the elastic contact piece has a movable contact. The guide core is disposed on the upper side of the elastic contact piece for receiving external pressing pressure. The guide core presses the elastic contact piece to a set position between its swing fulcrum and movable contact. The elastic contact piece can be pressed and swung by the guide core, so that the movable contact and the fixed contact come into contact. The upper cover is mounted on the base and has a through hole. The upper part of the guide core is inserted into the through hole. The front and rear ends of the upper part of the guide core have side ribs. The inner walls of the front and rear ends of the through hole have guide grooves. The side ribs are inserted into the corresponding guide grooves and are limited by the guide grooves. The bottom of the guide core has a bottom rib that abuts against the upper side of the elastic contact piece.

[0006] In the above technical solution, the inner wall of the upper cover is provided with a first protrusion and a second protrusion. The first protrusion is located on the lower left side of the through hole, and one side of the first protrusion is on the same vertical plane as the left inner wall surface of the through hole and together they form a left limiting surface. The second protrusion is located on the lower right side of the through hole, and one side of the second protrusion is on the same vertical plane as the right inner wall surface of the through hole and together they form a right limiting surface. The upper left side of the guide core is guided and limited by the left limiting surface, and the upper right side of the guide core is guided and limited by the right limiting surface.

[0007] In the above technical solution, the lower part of the guide core is provided with limiting blocks at both the front and rear ends, and there is a set distance between the two limiting blocks. When the guide core moves up and down, the limiting blocks do not contact the first protrusion and the second protrusion. The upper side of the limiting block is provided with an upper limit surface, which is matched with the top inner wall of the top cover. The lower side of the limiting block is provided with the bottom protrusion ribs.

[0008] In the above technical solution, the first metal part is provided with a left connecting arm and a right connecting arm. The left end of the left connecting arm is provided with a left "V" shaped groove, and the swing fulcrum of the elastic contact piece is engaged in the left "V" shaped groove. The right end of the right connecting arm is provided with a right "V" shaped groove, and the right end of the elastic contact piece is connected to a tongue-shaped lifting piece. The tongue-shaped lifting piece extends to the left, and the left end of the tongue-shaped lifting piece is provided with a lifting piece fulcrum, which is engaged in the right "V" shaped groove.

[0009] In the above technical solution, the tongue-shaped raised piece has a downward convex arc structure, and the front and rear sides of the tongue-shaped raised piece have a front-to-back symmetrical conical structure. From the right end to the left end of the tongue-shaped raised piece, the front-to-back width of the tongue-shaped raised piece gradually narrows.

[0010] In the above technical solution, the first protrusion is inserted downwards to the right side of the left connecting arm, and the second protrusion is inserted downwards to the left side of the right connecting arm.

[0011] In the above technical solution, a front strip and a rear strip are provided between the swing fulcrum and the movable contact of the elastic contact piece. A connecting strip is provided between the front strip and the rear strip. The bottom convex rib abuts against the upper side of the connecting strip, and the lower side of the bottom convex rib is an arc surface. The front strip and the rear strip are symmetrical front and back. The section of the front strip near the tongue-shaped raised piece is the right section of the front strip. From the left end to the right end of the right section of the front strip, the width of the upper side of the right section of the front strip gradually narrows. The section of the rear strip near the tongue-shaped raised piece is the right section of the rear strip. From the left end to the right end of the right section of the rear strip, the width of the upper side of the right section of the rear strip gradually narrows.

[0012] In the above technical solution, the base is provided with two first fastening parts symmetrically at its front and rear ends, and the lower part of the front and rear ends of the top cover is provided with two second fastening parts symmetrically at their respective ends. The first fastening parts and the corresponding second fastening parts are interlocked.

[0013] In the above technical solution, the first metal part and the second metal part are respectively injection molded and connected to the base in the mold. The first metal part is provided with a first electrical terminal extending to the left of the base, and the second metal part is provided with a second electrical terminal extending to the right of the base. The lower end of the base is provided with two positioning posts.

[0014] The beneficial effects of this utility model are as follows: Because the guide core has side ribs at both the front and rear ends, and guide grooves are provided on the inner walls of the through holes at both the front and rear ends, the side ribs are inserted into the corresponding guide grooves and are limited by them. Therefore, the side ribs at both the front and rear ends of the guide core can be limited and guided from four sides. In addition, the left and right sides of the guide core are limited and guided by the inner walls of the left and right sides of the through holes, which can prevent the guide core from skewing and sliding and from dispersing the pressing force direction when pressed. At the same time, because the bottom of the guide core has bottom ribs that abut against the upper side of the elastic contact piece, the guide core will not tilt when the elastic contact piece swings. The pressing force is concentrated, balanced, and uniform, resulting in a smooth touch. Attached Figure Description

[0015] Figure 1 This is a first-person view of the overall structure of this utility model.

[0016] Figure 2 This is a second-view structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the dispersed structure from a first-person perspective of this utility model.

[0018] Figure 4 This is a schematic diagram of the dispersed structure from a second perspective of the present invention.

[0019] Figure 5 This is a schematic diagram of the dispersed structure from a third-view perspective of this utility model.

[0020] Figure 6 This is a structural diagram of the conductor from a first-person perspective.

[0021] Figure 7 This is a structural diagram of the conductor from a second perspective.

[0022] Figure 8 This is a top view of the elastic contact sheet.

[0023] Figure 9 This is a longitudinal sectional view of the present invention. Detailed Implementation

[0024] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," etc., indicate the orientation or positional relationship based on... Figure 3 For the directions or positional relationships shown, please refer to [reference needed]. Figure 3 The directional coordinates in the text are only for the purpose of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0026] like Figures 1-9As shown, this utility model is a switch used for mouse left and right buttons, or for electronic products such as game console buttons and vehicle control devices. The switch includes a base 1, a first metal part 2, a second metal part 3, an elastic contact piece 4, a top cover 5, and a guide core 6. The first metal part 2 is mounted on the left end of the base 1, and the second metal part 3 is mounted on the right end of the base 1. A fixed contact 31 is provided on the second metal part 3. The left end of the elastic contact piece 4 has a swing fulcrum 41, which is connected and cooperates with the first metal part 2. The right end of the elastic contact piece 4 has a movable contact 42. The guide core 6 is located on the upper side of the elastic contact piece 4 and is used to receive external pressing pressure to press the swing fulcrum 41 and the upper contact 3. The movable contact 42 is positioned such that the elastic contact piece 4 can be pressed and swung by the guide core 6, so that the movable contact 42 contacts the fixed contact 31. The upper cover 5 is mounted on the base 1 and has a through hole 51. The upper part of the guide core 6 is inserted into the through hole 51. The front and rear ends of the upper part of the guide core 6 are provided with side ribs 61. The inner walls of the front and rear ends of the through hole 51 are provided with guide grooves 511. The side ribs 61 are inserted into the corresponding guide grooves 511 and are limited by the guide grooves 511. The bottom of the guide core 6 is provided with a bottom rib 62, which abuts against the upper side of the elastic contact piece 4.

[0027] The side ribs 61 at both ends of the guide core 6 of this invention can be guided and limited in four directions. In addition, the left and right sides of the guide core 6 are guided and limited by the inner walls of the through holes 51 on both sides, which can prevent the guide core 6 from tilting and sliding and the pressure direction from being dispersed when pressed. At the same time, since the bottom of the guide core 6 is provided with a bottom rib 62, which abuts against the upper side of the elastic contact piece 4, the guide core 6 will not tilt or slide when the elastic contact piece 4 swings. The pressing force is balanced and uniform, and the touch is smooth.

[0028] like Figure 5 and Figure 9 As shown, the inner wall of the upper cover 5 is provided with a first protrusion 52 and a second protrusion 53. The first protrusion 52 is located on the lower left side of the through hole 51, and one side of the first protrusion 52 is on the same vertical plane as the left inner wall surface of the through hole 51, forming a left limiting surface 521 together. The second protrusion 53 is located on the lower right side of the through hole 51, and one side of the second protrusion 53 is on the same vertical plane as the right inner wall surface of the through hole 51, forming a right limiting surface 531 together. The upper left side of the guide core 6 is guided and limited by the left limiting surface 521, and the upper right side of the guide core 6 is guided and limited by the right limiting surface 531. By setting the left limiting surface 521 and the right limiting surface 531, the left and right sides of the guide core 6 can be further limited and guided. During the pressing process, there are guide tubes on both sides, resulting in excellent stability.

[0029] like Figure 4 , 5 As shown in Figures 6 and 7, the lower part of the guide core 6 is provided with limiting blocks 63 at both the front and rear ends. There is a set distance between the two limiting blocks 63. When the guide core 6 moves up and down, the limiting blocks 63 do not contact the first protrusion 52 and the second protrusion 53. The upper side of the limiting block 63 is provided with an upper limit surface, which is matched with the inner top wall of the upper cover 5. The lower side of the limiting block 63 is provided with the bottom protrusion 62. The limiting blocks 63 of this invention can prevent the guide core 6 from loosening upwards from the through hole 51, and there is no interference between the limiting blocks 63 and the first protrusion 52 and the second protrusion 53.

[0030] like Figure 3 , 4 As shown in Figures 5, 8, and 9, the first metal part 2 is provided with a left connecting arm 21 and a right connecting arm 22. The left end of the left connecting arm 21 is provided with a left "V" shaped groove 211, and the swing fulcrum 41 of the elastic contact piece 4 is engaged in the left "V" shaped groove 211. The right end of the right connecting arm 22 is provided with a right "V" shaped groove 221, and the right end of the elastic contact piece 4 is connected to a tongue-shaped raised piece 43. The tongue-shaped raised piece 43 extends to the left, and the left end of the tongue-shaped raised piece 43 is provided with a raised piece fulcrum 431, which is engaged in the right "V" shaped groove 221. The left "V" shaped groove 211 and the right "V" shaped groove 221 cooperate together to stably position the elastic contact piece 4. The tongue-shaped raised piece 43 has a downwardly protruding arc-shaped structure. The front and rear sides of the tongue-shaped raised piece 43 have a symmetrical conical structure. From the right end to the left end of the tongue-shaped raised piece 43, the front and rear width of the tongue-shaped raised piece 43 gradually narrows. This structure can make the pressure transmission force more balanced and gradual, and the pressure and rebound release of the tongue-shaped raised piece are smoother. The stress is properly released and the life is longer.

[0031] like Figure 3 , 4 As shown in Figures 5 and 9, the first protrusion 52 is inserted downward to the right side of the left connecting arm 21, and the second protrusion 53 is inserted downward to the left side of the right connecting arm 22. This structure allows the first protrusion 52 to block the right side of the left connecting arm 21, preventing the left connecting arm 21 from deforming to the right, and allows the second protrusion 53 to block the left side of the right connecting arm 22, preventing the right connecting arm 22 from deforming to the left.

[0032] like Figure 3 , 4As shown in Figures 5, 8, and 9, in the above technical solution, a front strip 45 and a rear strip 46 are provided between the swing fulcrum 41 and the movable contact 42 of the elastic contact piece 4. A connecting strip 44 is provided between the front strip 45 and the rear strip 46. The bottom rib 62 abuts against the upper side of the connecting strip 44, and the lower side of the bottom rib 62 is an arc surface. When the connecting strip 44 is pressed, it can evenly transmit the pressing force of the guide core 6 to the front strip 45 and the rear strip 46, so that the swing fulcrum 41 of the elastic contact piece 4 contacts the fixed contact 31. At the same time, the front strip 45 and the rear strip 46 will also transmit the pressing force to the tongue-shaped raised piece 43, so that the tongue-shaped raised piece 43 will elastically deform. The lower side of the bottom rib 62 is an arc surface, which allows the bottom rib 62 to make line contact with the connecting strip 44 instead of surface contact. When the elastic contact piece 4 swings, the guide core 6 will not tilt or slide. The pressing force is balanced and uniform, and the touch is smooth. The front side strip 45 and the rear side strip 46 are symmetrical. The section of the front side strip 45 near the tongue-shaped raised piece is the right section of the front side strip. From the left end to the right end of the right section of the front side strip, the width of the upper side of the right section gradually narrows. The section of the rear side strip 46 near the tongue-shaped raised piece is the right section of the rear side strip. From the left end to the right end of the right section of the rear side strip, the width of the upper side of the right section gradually narrows. This structure of the right sections of the front and rear side strips allows the front side strip 45 and the rear side strip 46 to better balance the gradual pressure transmission force. The right sections of the front and rear side strips, together with the tongue-shaped raised piece, can more smoothly deform under pressure and rebound to release stress. With proper stress release, the lifespan is longer.

[0033] like Figure 1-5 As shown, the base 1 has two symmetrically arranged first fastening parts 11 at its front and rear ends, and the upper cover 5 has two symmetrically arranged second fastening parts 54 at its lower front and rear ends. The first fastening parts 11 and the corresponding second fastening parts 54 are interlocked. The four fastening points are symmetrical in size, the fastening is uniform, and the tension is consistent. Preferably, the first fastening part 11 is a hook, and the second fastening part 54 is a fastening hole, with the hook engaging into the corresponding fastening hole.

[0034] like Figure 1-5 As shown in Figures 9 and 1, the first metal part 2 and the second metal part 3 are respectively injection molded and connected to the base 1 in the mold. The first metal part 2 is provided with a first power terminal 24 extending to the left of the base 1, and the second metal part 3 is provided with a second power terminal 32 extending to the right of the base 1. When the switch of this utility model is installed on an external PCB circuit board, the first power terminal 24 and the second power terminal 32 can be soldered to the external PCB circuit board.

[0035] like Figure 2 , 5As shown in Figures 9 and 1, the lower end of the base 1 is provided with two positioning posts 12. When the switch of this utility model is installed on an external PCB circuit board, the positioning posts 12 can be inserted into the corresponding sockets on the external PCB circuit board to realize the placement and positioning of the switch.

[0036] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A switch comprising a base, a first metal component, a second metal component, a resilient contact piece, a top cover, and a guide core; the first metal component is mounted on the left end of the base, the second metal component is mounted on the right end of the base, a fixed contact is provided on the second metal component, the left end of the resilient contact piece has a swing fulcrum, the swing fulcrum is connected and cooperates with the first metal component, the right end of the resilient contact piece has a movable contact, the guide core is disposed on the upper side of the resilient contact piece, and is used to receive external pressing pressure to press the swing fulcrum of the resilient contact piece and the movable contact at a predetermined position, the resilient contact piece can be pressed and swung by the guide core, so that the movable contact contacts the fixed contact, the top cover is mounted on the base, the top cover has a through hole, and the upper part of the guide core is inserted into the through hole; characterized in that: The upper part of the guide core has side ribs at both ends, and the inner walls of the through hole at both ends are provided with guide grooves. The side ribs are inserted into the corresponding guide grooves and are limited by the guide grooves. The bottom of the guide core has bottom ribs that abut against the upper side of the elastic contact piece.

2. The switch according to claim 1, characterized in that: The inner wall of the upper cover is provided with a first protrusion and a second protrusion. The first protrusion is located on the lower left side of the through hole, and one side of the first protrusion is on the same vertical plane as the left inner wall surface of the through hole and together they form a left limiting surface. The second protrusion is located on the lower right side of the through hole, and one side of the second protrusion is on the same vertical plane as the right inner wall surface of the through hole and together they form a right limiting surface. The upper left side of the guide core is guided and limited by the left limiting surface, and the upper right side of the guide core is guided and limited by the right limiting surface.

3. The switch according to claim 2, characterized in that: The lower part of the guide core is provided with limiting blocks at both the front and rear ends, and there is a set distance between the two limiting blocks. When the guide core moves up and down, the limiting blocks do not contact the first protrusion and the second protrusion. The upper side of the limiting block is provided with an upper limit surface, which is matched with the top inner wall of the top cover. The lower side of the limiting block is provided with the bottom protrusion ribs.

4. The switch according to claim 2, characterized in that: The first metal part is provided with a left connecting arm and a right connecting arm. The left end of the left connecting arm is provided with a left "V" shaped groove, and the swing fulcrum of the elastic contact piece is engaged in the left "V" shaped groove. The right end of the right connecting arm is provided with a right "V" shaped groove, and the right end of the elastic contact piece is connected to a tongue-shaped lifting piece. The tongue-shaped lifting piece extends to the left, and the left end of the tongue-shaped lifting piece is provided with a lifting piece fulcrum, which is engaged in the right "V" shaped groove.

5. The switch according to claim 4, characterized in that: The tongue-shaped raised piece has a downward-convex arc-shaped structure. The front and rear sides of the tongue-shaped raised piece have a symmetrical conical structure. From the right end to the left end of the tongue-shaped raised piece, the front and rear width of the tongue-shaped raised piece gradually narrows.

6. The switch according to claim 4, characterized in that: The first protrusion is inserted downwards to the right side of the left connecting arm, and the second protrusion is inserted downwards to the left side of the right connecting arm.

7. The switch according to claim 4, characterized in that: The elastic contact piece has a front strip and a rear strip between its swing fulcrum and movable contact. A connecting strip is provided between the front strip and the rear strip. The bottom convex rib abuts against the upper side of the connecting strip, and the lower side of the bottom convex rib is an arc surface.

8. The switch according to claim 7, characterized in that: The front and rear side strips are symmetrical. The section of the front side strip near the tongue-shaped raised piece is the right section of the front side strip. From the left end to the right end of the right section of the front side strip, the width of the upper side of the right section gradually narrows. The section of the rear side strip near the tongue-shaped raised piece is the right section of the rear side strip. From the left end to the right end of the right section of the rear side strip, the width of the upper side of the right section gradually narrows.

9. The switch according to claim 1, characterized in that: The base has two first fastening parts symmetrically arranged at its front and rear ends, and the lower part of the front and rear ends of the top cover has two second fastening parts symmetrically arranged at its front and rear ends. The first fastening parts and the corresponding second fastening parts are interlocked.

10. The switch according to claim 1, characterized in that: The first metal part and the second metal part are respectively injection molded and connected to the base in the mold. The first metal part is provided with a first electrical terminal extending to the left of the base, and the second metal part is provided with a second electrical terminal extending to the right of the base. The lower end of the base is provided with two positioning posts.

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