Push switch device

Abstract

The invention provides a push switch device which can continuously perform push rotation operation and is simple in structure. Comprises: an operation body having an operation part capable of being pressed and operated and capable of rising and falling in a first direction; the driven part is provided with a through hole and can rotate around an axis parallel to the first direction when the operation body ascends and descends; a housing that accommodates the follower and a part of the operation body therein; a return spring provided between the housing and the operation body and providing a restoring force to the operation body in a direction opposite to the pressing operation; the movable contact is arranged at the bottom of the driven piece; and a fixed contact provided in the housing and facing the movable contact, the follower having an interlocking column protruding from a side wall of the through-hole toward a portion of the operation body, the operation body having a guide portion, the guide portion contacting the interlocking column when the operation body is raised and lowered in the first direction, converting a pressing force in the first direction into a force in a circumferential direction around the axis, and moving the operation body in the second direction. The follower is rotated about the axis, and the contact position between the movable contact and the fixed contact is changed.

Description

Technical Field

[0001] The present invention relates to a push switch device capable of rotating a follower and performing a contact switching action when an operating body is pressed, and in particular to a push switch device in which an operating body is alternately maintained at different height positions when a pressing operation is repeated. Background Art

[0002] There are many components in the conventional push switch device. For example, the push switch device in Patent Document 1 is composed of 11 components, including a housing, an operating body, a cam follower, an elastic member, an action member, a return spring, a thin plate, a mounting plate, a movable contact, a fixed contact, and an anti-slip portion (annular member). Among them, the interior of the housing is a hollow structure, the operating body can be raised and lowered along the axial direction (up and down direction), the cam follower can be raised and lowered along the axial direction along with the lifting and lowering action of the operating body, and can rotate along the circumferential direction, the elastic member is sandwiched between the operating body and the cam follower, the action member is splined to the cam follower and can rotate as a whole, the return spring is sandwiched between the cam follower and the action member, the thin plate can rotatably support the action member and cover the lower opening end of the housing, and the mounting plate is installed in a manner of holding the housing and the thin plate.

[0003] Patent document 1: CN101377982A

[0004] However, such a push switch device not only has a large number of components, but also has a complex connection relationship between them. The assembly of such a push switch device requires many steps, and the production cost and assembly efficiency are not high. Summary of the invention

[0005] The present invention has been made in view of the above problems, and provides a push switch device which can perform a push-and-turn operation continuously and has a simple structure.

[0006] The push switch device of the present invention is characterized in that it includes: an operating body having an operating portion that can be pressed and operated, and can be lifted and lowered in a first direction when pressed and operated; a follower having a through hole for inserting a part of the operating body, and being able to rotate around an axis parallel to the first direction when the operating body is lifted and lowered; a housing that accommodates the follower and a part of the operating body inside; a return spring that is arranged between the housing and the operating body and provides a restoring force in a direction opposite to the pressing operation to the operating body; a movable contact that is arranged at the bottom of the follower; and a fixed contact that is arranged in the housing and opposite to the movable contact, the follower having a linkage column that protrudes from a side wall of the through hole toward a part of the operating body, the operating body having a guide portion that contacts the linkage column when the operating body is lifted and lowered in the first direction, and through the contact, the pressing force along the first direction is converted into a force in a circumferential direction around the axis, so that the follower rotates around the axis, and the contact position between the movable contact and the fixed contact is changed.

[0007] The push switch device of the present invention can realize continuous push-and-turn operation by only driving the linkage column of the follower through the guide portion of the operating body. Compared with the previous push switch device, the number of components is greatly reduced, the structure of the operating body and the follower is simpler, and the production cost of the components is reduced. In addition, there are fewer assembly steps, which improves the production efficiency of the push switch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view of the push switch device according to the embodiment of the present invention.

[0009] Figure 2 This is a perspective view of the push switch device viewed from obliquely above.

[0010] Figure 3 This is a perspective view of the push switch device viewed from obliquely below.

[0011] Figure 4 It is an exploded perspective view of the push switch device.

[0012] Figure 5 This is a three-dimensional diagram of the movable contact and the fixed contact.

[0013] Figure 6 It is a top view of the operating body.

[0014] Figure 7 It is a top view of the follower.

[0015] Figure 8 It is a perspective view of a part of the follower.

[0016] Fig. 9It is the front view of the follower.

[0017] Fig.10 It is the main view of the operating body.

[0018] Fig.11 It is a three-dimensional diagram of the shell.

[0019] Fig.12 It is a top view of the shell.

[0020] Fig.13 1 is a diagram showing the relative positional relationship between the operating body and the follower in the first state.

[0021] Fig.14 It is a bottom view of the operating body and the follower in the first state.

[0022] Fig.15 2 is a front view of the push switch device in the second state.

[0023] Fig.16 2 is a diagram showing the relative positional relationship between the operating body and the follower in the second state.

[0024] Fig.17 3 is a front view of the push switch device in the third state.

[0025] Fig.18 3 is a diagram showing the relative positional relationship between the operating body and the follower in the third state.

[0026] Fig.19 This is a front view showing the relative position of the movable contact and the fixed contact in the first state.

[0027] Fig. 20 It is a plan view showing the relative position of the movable contact and the fixed contact in the first state.

[0028] Fig.21 It is a front view showing the relative position of the movable contact and the fixed contact in the third state.

[0029] Fig. 22 It is a plan view showing the relative position of the movable contact and the fixed contact in the third state.

[0030] Reference numerals

[0031] 1 Push switch device, 2 operating body, 2a bottom surface, 21 operating part, 22 guide part, 22a upper surface, 23 connecting part, 24 first cam, 241 upper tooth, 241a first side, 241b second side, 241c upper tooth root, 25 second cam, 251 lower tooth, 251a third side, 251b fourth side, 251c lower tooth root, 251c1 first lower tooth root, 251c2 second lower tooth root, 26 third protrusion, 3 follower, 31 through hole, 32 linkage column, 33 upper part, 34 lower part, 3 5 Step surface, 36 First protrusion, 37 Second protrusion, 4 Shell, 41 Engagement protrusion, 42 Stop surface, 43 Bottom protrusion ring, 5 Return spring, 6 Movable contact, 61 First contact portion, 62 Second contact portion, 7 Fixed contact, 71 First fixed contact, 71a First external terminal, 72 Second fixed contact, 72a Second external terminal, 73 Third fixed contact, 73a Third external terminal, 73b Fourth external terminal, 8 Cover, 81 Top surface, 81a Opening, 82 Side wall, 82a Engagement opening, L axis, S space DETAILED DESCRIPTION

[0032] Next, the overall structure of the push switch device 1 according to the embodiment of the present invention will be described.

[0033] Figure 1 It is a front view of the push switch device 1 according to the embodiment of the present invention. Figure 2 It is a perspective view of the push switch device 1 viewed from obliquely above. Figure 3 It is a perspective view of the push switch device 1 viewed from obliquely below. Figure 4 It is an exploded perspective view of the push switch device 1 . Figure 5 yes Figure 2 A three-dimensional view of the movable contact 6 and the fixed contact 7 in FIG. Figure 1 to Figure 5 The illustrated state is the position of each member in the first state (free state) when the push switch device 1 is not pushed.

[0034] like Figure 1 to Figure 5 As shown, the push switch device 1 of the present invention includes an operating body 2 , a follower 3 , a housing 4 , a return spring 5 , a movable contact 6 , a fixed contact 7 and a cover 8 .

[0035] The operating body 2 is formed of a synthetic resin material. Figure 4 As shown in FIG. 1 , the operating body 2 has an operating portion 21 that can be pressed and operated. When the operating portion 21 is pressed downward, the operating body 2 can be raised and lowered in the vertical direction (first direction). Figure 4 As shown, the operating body 2 further includes a guide portion 22 capable of guiding the rotation of the follower 3 and a connecting portion 23 located between the operating portion 21 and the guide portion 22 .

[0036] Figure 6 2 is a top view of the operating body 2. In the top view, the operating portion 21 is a roughly square shape, the connecting portion 23 is a roughly square shape with four corners chamfered into arcs, and the side length is greater than the side length of the operating portion 21, and the guide portion 22 is a roughly circular shape, and the circular outer periphery of the guide portion 22 overlaps with the chamfered arc outer periphery of the connecting portion 23.

[0037] The driven member 3 is formed of a synthetic resin material having excellent sliding properties. Figure 4 As shown, the follower 3 has a through hole 31 into which a part of the operating body 2 is inserted, and can rotate around an axis L parallel to the up-down direction when the operating body 2 is raised or lowered.

[0038] More specifically, when the push switch device 1 is not pushed, the guide portion 22 is completely inserted into the through hole 31, and the connection portion 23 is not inserted into the through hole 31 (refer to Figure 1 During the pressing operation of the push switch device 1, as the operating body 2 moves up and down, at least a portion of the connecting portion 23 can enter the through hole 31 of the follower 3 (refer to Fig.15 ).

[0039] The housing 4 is formed of a synthetic resin material and has a bottomed hollow shape. The follower 3 and a part of the operation body 2 accommodated in the through hole 31 are accommodated in the housing 4 .

[0040] The return spring 5 is a coil spring provided between the housing 4 and the operating body 2 , and provides a restoring force to the operating body 2 in an upward direction (ie, in a direction opposite to the pressing operation).

[0041] The movable contact 6 is arranged at the bottom of the follower 3. Figure 4 , Figure 5 As shown, the movable contact 6 is a substantially annular metal member, and is fixed to the bottom of the follower 3 by, for example, heat riveting. The movable contact 6 has a first contact portion 61 and a second contact portion 62 protruding toward the fixed contact 7.

[0042] The fixed contact 7 is arranged in the housing 4 by insert molding and is located opposite to the movable contact 6. The fixed contact 7 is a metal component, such as Figure 5 As shown, it includes a first fixed contact 71, a second fixed contact 72 and a third fixed contact 73. The first fixed contact 71 has a first external terminal 71a extending outward, the second fixed contact 72 has a second external terminal 72a extending outward, and the third fixed contact 73 has a third external terminal 73a and a fourth external terminal 73b extending outward.

[0043] The cover 8 is disposed outside the housing 4. Figure 4As shown in FIG. 1 , the cover 8 has a substantially square top surface 81 covering the upper surface of the housing 4, and an opening 81a is provided on the top surface 81 of the cover 8. The portion of the operating body 2 not inserted into the through hole 31 (the operating portion 21 and the connecting portion 23) is exposed from the opening 81a. Figure 4 As shown, the cover body 8 also has four side walls 82 extending downward from the four sides of the top surface 81, and a snap-fitting opening 82a is formed on at least one of the side walls 82. The snap-fitting opening 82a is snap-fitted with the snap-fitting protrusion 41 formed on the side wall of the housing 4, so that the cover body 8 and the housing 4 are relatively fixed.

[0044] In addition, the cross section of the connection portion 23 of the operating body 2 is formed into a non-circular shape that is substantially the same as the opening shape of the opening portion 81a. For example, in this embodiment, the cross section of the connection portion 23 and the opening shape of the opening portion 81a are substantially the same positive direction shape (refer to Figure 6 The non-circular shape here may also include other polygonal shapes such as triangle, pentagon, hexagon, etc. Through such a structure, the operating body 2 can be prevented from rotating around the axis L.

[0045] Furthermore, when the operating body 2 is not pressed, the upper surface 22a of the guide portion 22 (see Figure 6 ) abuts against a portion of the top surface 81 of the cover body 8 near the opening 81a in the up-down direction, thereby defining the height of the portion of the operating body 2 exposed from the cover body 8. In this way, when the operating body 2 is not pressed, the cover body 8 restricts the upward movement and escape of the operating body 2.

[0046] Figure 7 It is a top view of the follower 3. Figure 7 As shown, the follower 3 has two interlocking posts 32 protruding from the side wall of the through hole 31 toward the center of the circle. In the assembled state, the interlocking posts 32 protrude from the side wall of the through hole 31 toward the inserted guide portion 22. Figure 8 It is a three-dimensional diagram of a part of the follower 3. In order to facilitate the observation of the shape of the linkage column 32, Figure 8 In the figure, a part of the follower 3 is cut off along a plane parallel to the axis L. Figure 8 As shown, the linkage column 32 is a column with a cross section in the shape of a sports track, wherein the straight track portion of the sports track is along the up and down direction, and the curved track portions are located on the upper and lower sides.

[0047] Fig. 9 This is the front view of the follower 3. Figure 7 and Fig. 9As shown, two first protrusions 36 protruding upward are provided on the upper surface of the follower 3, and the two first protrusions 36 are provided at positions approximately symmetrical to the center in a plan view, and each extends in a circumferential direction around the axis L. In addition, four second protrusions 37 protruding radially outward are provided on the outer side surface of the follower 3, and the four second protrusions 37 are provided at positions approximately symmetrical to the center in a plan view, and each extends in a vertical direction parallel to the axis L.

[0048] The first protrusion 36 is used to limit the shaking of the follower 3 accommodated in the housing 4 along the axis L, and can reduce the contact area between the follower 3 and the cover 8 during rotation, thereby reducing the friction resistance. The second protrusion 37 is used to limit the shaking of the follower 3 in a plane perpendicular to the axis L, and can reduce the contact area between the follower 3 and the housing 4 during rotation, thereby reducing the friction resistance.

[0049] During the pressing operation of the push switch device 1, when the operating body 2 is lifted and lowered in the up and down directions, the guide portion 22 contacts the linkage column 32, and through this contact, the pressing force in the up and down directions is converted into a force in the circumferential direction around the axis L, so that the follower 3 rotates around the axis L, thereby changing the contact position between the movable contact 6 and the fixed contact 7.

[0050] Fig.10 is the main view of the operating body. Fig.10 As shown, the guide portion 22 includes a first cam 24 and a second cam 25 disposed on the outer side of the operating body 2 in the up-down direction. The first cam 24 is close to one side of the operating portion 21 ( Fig.10 The upper side of the middle part) has a circumferential arrangement and faces the fixed contact 7 ( Fig.10 The lower side of the second cam 25 is close to the fixed contact point 7 ( Fig.10 ), having a plurality of portions arranged along the circumferential direction and facing the operating portion 21 ( Fig.10 The plurality of upper teeth 241 and the plurality of lower teeth 251 are opposite to each other in a concave-convex corresponding manner, and a space S for accommodating the linkage column 32 is formed between the plurality of upper teeth 241 and the plurality of lower teeth 251.

[0051] like Fig.10 As shown, each upper tooth 241 has a first side 241a extending substantially along the up-down direction and a second side 241b extending along a second direction intersecting the up-down direction. Each lower tooth 251 has a third side 251a extending substantially along the up-down direction and a fourth side 251b extending along a third direction intersecting the up-down direction and the second direction.

[0052] In addition, the extension direction of the first side 241a and the extension direction of the third side 251a are not limited to the case of being substantially along the up-down direction. When the vertical spacing and horizontal spacing between the upper teeth 241 and the lower teeth 251 and the width of the linkage column 32 change, the angle between the extension direction of the first side 241a and the up-down direction will change, and the angle between the extension direction of the third side 251a and the up-down direction will also change.

[0053] The upper tooth root portion 241c formed by the upper end portions of the first side 241a and the second side 241b of the adjacent upper tooth is opposite to the portion of the fourth side 251b close to the upper tooth 241 along the up-down direction, and the lower tooth root portion 251c formed by the lower end portions of the third side 251a and the fourth side 251b of the adjacent lower tooth 251 is opposite to the portion of the second side 241b close to the lower tooth 251 along the up-down direction.

[0054] In addition, the multiple lower tooth root portions 251c of the second cam 25 include a first lower tooth root portion 251c1 with an opening k set between the third side 251a and the fourth side 251b, and a second lower tooth root portion 251c2 formed by connecting the third side 251a and the fourth side 251b, and the first lower tooth root portion 251c1 and the second lower tooth root portion 251c2 are alternately arranged in the circumferential direction.

[0055] The opening k of the first lower tooth root portion 251c1 is set to have a width that allows the interlocking column 32 to pass through the opening k in the vertical direction (see Fig.14 The first lower tooth root portion 251c1 serves as an entrance for inserting the interlocking column 32 between the upper tooth 241 and the lower tooth 251 during the assembly process.

[0056] In addition, eight third protrusions 26 protruding radially outward are provided on the outer side surfaces of the first cam 24 and the second cam 25. Among them, four third protrusions 26 are provided on the outer side surfaces of the upper teeth 241, and four third protrusions 26 are provided on the outer side surfaces of the lower teeth 251. The plurality of third protrusions 26 are substantially uniformly provided along the circumferential direction in a plan view, and each extends in a direction parallel to the axis L.

[0057] The third protrusion 26 is used to limit the shaking of the operating body 2 in a plane perpendicular to the axis L, and can reduce the contact area between the operating body 2 and the driven member 3 during rotation, thereby reducing friction resistance.

[0058] In addition, if Figure 8 As shown, the follower 3 is divided into an upper portion 33 close to the operating portion 21 and a lower portion 34 to which the movable contact 6 is fixed. The outer diameter of the upper portion 33 is larger than the outer diameter of the lower portion 34, and an annular step surface 35 with a step difference is formed between the outer wall of the upper portion 33 and the outer wall of the lower portion 34.

[0059] Fig.11 It is a perspective view of the housing 4 . Fig.12 4 is a top view of the housing 4. Fig.11 and Fig.12 As shown, the inner side wall of the housing 4 has a stop surface 42 opposite to the step surface 35 of the follower 3, and the stop surface 42 is used to limit the movement of the follower 3 to the bottom side of the housing 4. Thus, the lower limit of the follower 3 is achieved through a simple structure.

[0060] Next, the pressing operation process of the push switch device 1 will be described.

[0061] Figure 1 2 shows a first state of push switch device 1 in which operation body 2 is not pressed. Fig.13 1 is a diagram showing the relative positional relationship between operation body 2 and follower 3 in the first state. Fig.14 : is a bottom view of the operating body and the follower in the first state. For the convenience of explanation, Fig.13 and Fig.14 Only the operating body 2 and the follower 3 are shown, and Fig.13 The follower 3 in the figure is in a transparent state.

[0062] like Fig.13 and Fig.14 As shown, in the first state, the linkage post 32 is located at the opening k of the first lower tooth root portion 251c1.

[0063] When the operating body 2 is pressed, the operating body 2 moves downward, and the distance between the second side 241b and the linkage column 32 gradually decreases and contacts. After contact, while the operating body 2 continues to move downward, the pressing force in the up-down direction is converted into a force in the circumferential direction of the follower 3 around the axis L, and the follower 3 begins to rotate in the clockwise circumferential direction in a top view.

[0064] When the bottom surface 2a of the operating body 2 (refer to Fig.10 ) and the bottom convex ring 43 of the housing 4 (refer to Fig.12 ) contact, the push switch device 1 changes to the second state (limit pressing state) and the rotation of the follower 3 stops. Fig.15 1 is a front view of the push switch device 1 in the second state. Fig.16 1 is a diagram showing the relative positional relationship between operation body 2 and follower 3 in the second state.

[0065] In the second state, the pressing force applied to the operating body 2 stops, and the operating body 2 moves upward based on the restoring force of the return spring 5, and the distance between the fourth side 251b and the linkage column 32 gradually decreases and contacts. After contact, while the operating body 2 continues to move upward, the restoring force in the up-down direction provided by the return spring 5 is converted into a force in the circumferential direction of the follower 3 around the axis L, and the follower 3 starts to rotate in the clockwise circumferential direction in the top view again. When the linkage column 32 is located at the second lower tooth root 251c2 adjacent to the first lower tooth root 251c1 in the rotation direction of the follower 3, the push switch device 1 changes to the third state (locked state), and the rotation of the follower 3 stops. Fig.17 This is a front view of the push switch device 1 in the third state. Fig.18 1 is a diagram showing the relative positional relationship between operation body 2 and follower 3 in the third state.

[0066] When the operating body 2 is pressed in the third state, the operating body 2 moves downward, and the distance between the second side 241b and the linkage column 32 gradually decreases and contacts. When the bottom surface 2a of the operating body 2 and the bottom convex ring 43 of the housing 4 (see Fig.12 ) contact, the push switch device 1 changes to the second state mentioned above, and the rotation of the follower 3 stops.

[0067] Next, in the second state, the pressing force applied to the operating body 2 stops, and the operating body 2 moves upward based on the restoring force of the return spring 5, and the distance between the fourth side 251b and the linkage column 32 gradually decreases and contacts. After contact, while the operating body 2 continues to move upward, the restoring force in the up-down direction provided by the return spring 5 is converted into a force in the circumferential direction of the follower 3 around the axis L, and the follower 3 starts to rotate in the clockwise circumferential direction in the top view again. When the linkage column 32 is located at the first lower tooth root 251c1 adjacent to the second lower tooth root 251c2 in the third state along the rotation direction of the follower 3, the push switch device 1 changes to the first state, and the rotation of the follower 3 stops.

[0068] In addition, if Figure 1 and Fig.17As shown, the height of the operating body 2 in the first state is slightly higher than the height of the operating body 2 in the third state. In other words, the portion of the connecting portion 23 exposed from the cover body 8 in the first state is larger than the portion of the connecting portion 23 exposed from the cover body 8 in the second state. This is because when the linkage column 32 is located at the second lower tooth root portion 251c2 in the third state, the contact between the linkage column 32 and the second lower tooth root portion 251c2 limits the upward movement of the operating body 2. In contrast, when the linkage column 32 is located at the first lower tooth root portion 251c1 in the first state, the linkage column 32 is located in the opening k of the second lower tooth root portion 251c2, and the upward movement of the operating body 2 is not limited at this time. Since the height of the operating body 2 in the first state is different from the height of the operating body 2 in the third state, different working states of the push switch device 1 can be identified based on the height of the operating body 2.

[0069] Below, refer to Figure 19 to Figure 22 , different working states of the push switch device 1 are described. Fig.19 It is a front view showing the relative position of movable contact 6 and fixed contact 7 in the first state. Fig. 20 It is a plan view showing the relative position of movable contact 6 and fixed contact 7 in the first state. Fig.21 It is a front view showing the relative position of movable contact 6 and fixed contact 7 in the third state. Fig. 22 2 is a top view showing the relative positions of the movable contact 6 and the fixed contact 7 in the third state. Figure 19 to Figure 22 Only the movable contact 6 and the fixed contact 7 are shown, and other components are omitted.

[0070] like Fig.19 and Fig. 20 As shown, in the first state, the first contact portion 61 contacts the second fixed contact 72 of the fixed contact 7, and the second contact portion 62 contacts the third fixed contact 73 of the fixed contact 7. In addition, Fig.19 and Fig. 20 Only one example of the first contact portion 61 and the second contact portion 62 contacting the fixed contact 7 in the first state is shown. As the follower 3 rotates continuously, the first contact portion 61 may also contact other parts of the second fixed contact 72, and at this time, the second contact portion 62 contacts the third fixed contact 73 of the fixed contact 7. In addition, as the follower 3 rotates continuously, the first contact portion 61 may also contact the third fixed contact 73, and at this time, the second contact portion 62 contacts the second fixed contact 72 of the fixed contact 7. In short, in the first state, as long as the second fixed contact 72 and the third fixed contact 73 of the fixed contact 7 are electrically connected via the movable contact 6, it will suffice.

[0071] like Fig.21 and Fig. 22As shown, in the third state, the first contact portion 61 contacts the first fixed contact 71 of the fixed contact 7, and the second contact portion 62 contacts the third fixed contact 73 of the fixed contact 7. In addition, Fig.21 and Fig. 22 Only one example of the first contact portion 61 and the second contact portion 62 contacting the fixed contact 7 in the third state is shown. With the continuous rotation of the follower 3, the first contact portion 61 may also contact other parts of the first fixed contact 71, and the second contact portion 62 may contact the third fixed contact 73 of the fixed contact 7. In addition, with the continuous rotation of the follower 3, the first contact portion 61 may also contact the third fixed contact 73, and the second contact portion 62 may contact the first fixed contact 71 of the fixed contact 7. In short, in the third state, as long as the first fixed contact 71 and the third fixed contact 73 of the fixed contact 7 are electrically connected via the movable contact 6, it will suffice.

[0072] Next, the technical effects of the push switch device 1 of the present invention will be described.

[0073] The push switch device 1 of the present invention can realize continuous push-rotation operation by only driving the linkage column 32 of the follower 3 through the guide portion 22 of the operating body 2. Compared with the previous push switch device, the number of components is greatly reduced, the structure of the operating body 2 and the follower 3 is simpler, and the production cost of the components is reduced. In addition, there are fewer assembly steps, which improves the assembly efficiency of the push switch device 1.

[0074] In addition, in the above-mentioned push switch device 1, the linkage column 32 is arranged between the plurality of upper teeth 241 of the first cam 24 and the plurality of lower teeth 251 of the second cam. When the pressing force is applied, the upper teeth 241 drive the follower 3 to rotate based on the pressing force, and when the pressing force is not applied, the lower teeth 251 drive the follower 3 to rotate based on the restoring force of the return spring 5. In the present invention, the first cam 24 and the second cam 25 for driving the follower 3 to rotate are both arranged on the operating body 2. Compared with the case where the first cam and the second cam are respectively arranged on different components, the tolerance caused by assembly can be avoided, the accuracy of the relative position between the first cam 24 and the second cam 25 is ensured, and it is conducive to achieving a more stable and smooth pressing operation.

[0075] Since the upper tooth root 241c is opposite to the portion of the fourth side 251b close to the upper tooth 241 and the lower tooth root 251c is opposite to the portion of the second side 241b close to the lower tooth 251, continuous rotation of the follower 3 caused by the descent and ascent of the operating body 2 can be achieved.

[0076] (Other Modifications)

[0077] The above-mentioned embodiment is only an example, and the present invention is not limited thereto. For the above-mentioned embodiment, those skilled in the art can appropriately add, delete, and design changes to the constituent elements, and appropriately combine the features of each embodiment, and as long as they have the technical idea of ​​the present invention, they are all included in the scope of the present invention.

[0078] For example, in the above-mentioned embodiment, the cross section of the connection portion 23 of the operating body 2 located at the opening portion 81a is formed into a non-circular shape substantially the same as the opening shape of the opening portion 81a, but the present invention is not limited thereto. For example, the cross section of the connection portion 23 of the operating body 2 and the opening shape of the opening portion 81a may both be formed into a circle, and a specific shape that can be engaged with each other may be provided on the connection portion 23 and the opening portion 81a, thereby preventing the operating body 2 from rotating about the axis L.

Claims

1. A push switch device, characterized in that: include: An operating body having an operating portion that can be pressed and operated, and can be raised and lowered along a first direction when pressed; A follower having a through hole for inserting a part of the operating body, and capable of rotating around an axis parallel to the first direction when the operating body is raised or lowered; A housing, accommodating the follower and a portion of the operating body; A return spring, disposed between the housing and the operating body, and providing a restoring force to the operating body in a direction opposite to the pressing operation; A movable contact point is arranged at the bottom of the follower; as well as A fixed contact is disposed on the housing and is opposite to the movable contact. The follower has a linkage column protruding from the side wall of the through hole toward a part of the operating body, and the operating body has a guide portion. When the operating body is lifted or lowered along the first direction, the guide portion contacts the linkage column, and through this contact, the pressing force along the first direction is converted into a force in the circumferential direction around the axis, so that the follower rotates around the axis, and the contact position between the movable contact and the fixed contact changes.

2. The push switch device according to claim 1, characterized in that: The guide portion includes a first cam and a second cam arranged on the outer side surface of the operating body along the first direction, the first cam is close to the side of the operating portion, and has a plurality of upper teeth arranged along the circumferential direction and protruding toward the side of the fixed contact, the second cam is close to the side of the fixed contact, and has a plurality of lower teeth arranged along the circumferential direction and protruding toward the side of the operating portion, the plurality of upper teeth and the plurality of lower teeth are opposite to each other in a concave-convex corresponding manner, and a space for accommodating the linkage column is formed between the plurality of upper teeth and the plurality of lower teeth.

3. The push switch device according to claim 2, characterized in that: Each of the upper teeth has a first side extending along the first direction and a second side extending along a second direction intersecting the first direction, and each of the lower teeth has a third side extending along the first direction and a fourth side extending along a third direction intersecting the first direction and the second direction. An upper tooth root portion formed by the ends of the first and second sides away from the lower teeth is opposite to a portion of the fourth side close to the upper teeth along the first direction, and a lower tooth root portion formed by the ends of the third and fourth sides away from the upper teeth is opposite to a portion of the second side close to the lower teeth along the first direction.

4. The push switch device according to claim 3, characterized in that: The plurality of lower tooth root portions of the second cam include a first lower tooth root portion having an opening between the third side and the fourth side and a second lower tooth root portion formed by connecting the third side and the fourth side, wherein the first lower tooth root portion and the second lower tooth root portion are alternately arranged in the circumferential direction. The opening of the first lower tooth root portion is set to a width that allows the linkage post to pass through the opening along the first direction.

5. The push switch device according to claim 4, characterized in that: In a first state where the operating body is not pressed, the linkage column is located at the root of the first lower tooth. When the operating body is pressed, the operating body moves downward and the second side contacts the linkage column. When the bottom surface of the operating body contacts the housing, the push switch device changes to the second state. In the second state, based on the restoring force of the return spring, the operating body moves upward and the fourth side contacts the linkage column. When the linkage column is located at the second lower tooth root portion adjacent to the first lower tooth root portion along the rotation direction of the follower, the push switch device changes to the third state. When the operating body is pressed in the third state, the operating body moves downward and the second side contacts the linkage column. When the bottom surface of the operating body contacts the housing, the push switch device changes to the second state. In the second state, based on the restoring force of the return spring, the operating body moves upward and the fourth side contacts the linkage column. When the linkage column is located at the first lower tooth root portion adjacent to the second lower tooth root portion along the rotation direction of the follower, the push switch device changes to the first state. A height of the operating body in the first state is higher than a height of the operating body in the third state.

6. The push switch device according to claim 1, characterized in that: There is also a cover body which is arranged on the outside of the shell, and an opening is arranged on the top surface of the cover body. Another part of the operating body which is not inserted into the through hole is exposed from the opening part. When the operating body is not pressed, the opening part determines the height of the part of the operating body exposed from the cover body.

7. The push switch device according to claim 6, characterized in that: The opening shape of the opening portion and the cross-section of a portion of the operation body located in the opening portion are formed in substantially the same non-circular shape.

8. The push switch device according to claim 1, characterized in that: The follower is divided into an upper portion close to the operating portion and a lower portion to which the movable contact is fixed, the outer diameter of the upper portion is larger than the outer diameter of the lower portion, and a stepped surface with a step difference is formed between the outer side wall of the upper portion and the outer side wall of the lower portion. The inner side wall of the housing has a stopper surface opposite to the step surface, and the stopper surface is used to limit the movement of the follower toward the bottom side of the housing.

9. The push switch device according to claim 8, characterized in that: One or more first protrusions are provided on the top surface of the upper portion of the follower facing the cover body, One or more second protrusions are arranged on the outer side surface of the upper portion of the follower opposite to the housing.

10. The push switch device according to claim 2, characterized in that: A plurality of third protrusions are provided on the outer side surfaces of the first cam and the second cam and protrude toward one side of the follower.

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