CN211743023U

CN211743023U - Knob switch

Info

Publication number: CN211743023U
Application number: CN201922360659.9U
Authority: CN
Inventors: 刘金格; 俞跃; 吴建霖
Original assignee: Jiangsu Acxion Electric Co ltd; Phoenix Contact Asia Pacific Nanjing Co Ltd
Current assignee: Jiangsu Acxion Electric Co ltd; Phoenix Contact Asia Pacific Nanjing Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-10-23
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a knob switch. This knob switch includes: a rotary switch, comprising: a knob head; a fixed seat; a cam; and the slider, the knob head includes the instruction piece, the instruction piece lower part is equipped with axial leaded light post, the instruction piece still includes the light guide reflection configuration, the light guide reflection configuration includes the light-emitting top surface that corresponds with knob top of the head portion, go into the light bottom surface relative with this top surface, the light-emitting side that corresponds with knob head lateral surface, and the medial surface that is relative with this light-emitting side, and left surface and the right flank that correspond with the knob head left and right sides, the medial surface of light guide reflection configuration includes the primary reflection inclined plane, be used for carrying out the primary reflection to the light that comes from the leaded light post, the light guide reflection configuration still includes the hollow hole, be used for carrying out the secondary reflection to at least partly light through the primary reflection inclined plane reflection, thereby make the light that gets into the light guide reflection configuration through the leaded light.

Description

Knob switch

Technical Field

The present invention relates to a rotary switch, and more particularly, to a rotary switch with different gears having a light guide.

Background

The electrical switches currently on the market are of a wide variety, one of which is a rotary switch. Most knob switches adopt a fixed design, only relate to a specific rotary gear, do not have flexibility, and can not well meet a plurality of specific use conditions of intelligent manufacturing. Meanwhile, a luminous knob switch is already on the market for the convenience of field observation of users. The luminous effect of the traditional luminous knob switch is generally single-point local luminescence, and the luminous effect is not beneficial to a user to observe the electrical switch in an all-round and multi-angle manner. One recent prior art technique involves a rotary switch that includes a handle that can be uniformly illuminated by an internal light source. In this solution, a plastic light guide element is accommodated in the rotary handle, the light exit surface of which comprises a first section and a second section which are oriented differently. In order to guide the light from the conical light guide to the first section and the second section, two different reflection surfaces in the form of grooves are provided in the light guide element. Although this structure achieves uniform light emission from multiple directions, the manufacture of the light guide member (in particular, the manufacture of two grooves to form an accurate shape and positioning) is relatively complicated.

There is a need for a more structurally simple and reliable knob with light guide.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a rotary switch, include: a knob head; the fixing seat is arranged below the knob head and allows at least one part of the bottom of the knob head to pass through the fixing seat; the cam is positioned at the bottom of the fixed seat and is in butt joint with the bottom of the knob head, so that the cam can rotate under the control of the knob head, and at least one convex control curved surface is formed on the side surface of the cam; the sliding block and the cam are coaxial, inclined planes with different heights are arranged along the edge of the sliding block, when the cam rotates, the inclined plane of the sliding block is extruded by the control curved surface of the cam, so that the sliding block slides towards the bottom of the knob switch along the axial direction, the knob head comprises an indicating block, an axial light guide column is arranged at the lower part of the indicating block, the indicating block further comprises a light guide reflection structure, the light guide reflection structure comprises a light outlet top surface corresponding to the top of the knob head, a light inlet bottom surface opposite to the top surface, a light outlet side surface corresponding to the outer side surface of the knob head, an inner side surface opposite to the light outlet side surface, a left side surface and a right side surface corresponding to the left side and the right side of the knob head, the inner side surface of the light guide reflection structure comprises a main reflection inclined plane and is used for carrying out primary reflection on light from the light guide column, the light guide column is used for reflecting at least a part of light reflected by the main reflection inclined plane for the second time, so that the light entering the light guide reflection structure through the light guide column is emitted from the light emitting top surface and the light emitting side surface.

In the knob switch, the main reflecting inclined plane and the light guide column are arranged at positions such that light incident from the light guide column is at least partially reflected by the main reflecting inclined plane and then propagates substantially toward the light-emitting side surface.

As described above, in the rotary switch, the hollow hole is configured not to reflect the light incident from the light guide pillar, but to secondarily reflect the light reflected by the main reflection slope, so that the secondarily reflected light is generally transmitted toward the light exit top surface.

In the rotary switch, the hollow hole is formed in an elliptical shape, and the major axis of the elliptical shape forms an acute angle with the horizontal direction.

As described above, the inner side surface of the light guide reflection structure further includes an auxiliary reflection inclined surface, the auxiliary reflection inclined surface is closer to the light exit top surface than the main reflection inclined surface, and a horizontal transition section and a vertical transition section are disposed between the main reflection inclined surface and the auxiliary reflection inclined surface.

The knob switch is provided with a pit structure at the junction of the horizontal transition section and the vertical transition section of the light guide reflection structure.

As described above, in the rotary switch, the concave direction of the concave pit structure faces the light-emitting side surface.

As with the rotary switch, the secondary reflective slope is used to further break up the straight line propagation of light from the light guide bar.

As with the knob switch described above, the dimple structure serves to further break up the straight line propagation of light from the light guide bar.

The knob switch as described above, the knob head further includes a face mask mated with the indication block, and the indication block and the face mask are assembled together by a connection mechanism.

The rotary switch as described above, further comprising a knob, and wherein the mask bottom comprises an upper barb, the indication block lower part comprises an upper barb, and the knob comprises a lower barb hooking the upper barb of the mask and the upper barb of the indication block, for fitting the knob together with the mask and the indication block.

The utility model discloses still relate to a rotary switch, include: a knob head; the fixing seat is arranged below the knob head and allows at least one part of the bottom of the knob head to pass through the fixing seat; the cam is positioned at the bottom of the fixed seat and is in butt joint with the bottom of the knob head, so that the cam can rotate under the control of the knob head, and at least one convex control curved surface is formed on the side surface of the cam; the sliding block and the cam are coaxial, and inclined planes with different heights are arranged along the edge of the sliding block, wherein when the cam rotates, the control curved surface of the cam presses the inclined plane of the sliding block, so that the sliding block slides towards the bottom of the knob switch along the axial direction; and the sliding block return spring is used for providing axial return elastic force for the sliding block, wherein the cam comprises multiple replaceable models, and the sliding block comprises multiple replaceable models, so that under the condition of only replacing the sliding block and the cam, different gear types are realized through the structural cooperation of the fixed seat, the cam and the sliding block, and at least one of a self-locking function and a self-resetting function is provided.

The rotary switch as described above, the slider comprising: with or without a light slider; when the slider is a light-carrying slider, the light-carrying slider comprises a hollow structure allowing light to pass through; when the sliding block is a sliding block without a lamp, the bottom of the sliding block without the lamp comprises a supporting rib which is connected with the sliding block without the lamp.

The knob switch as described above, the slider includes at least one of the following various control slopes: the top of the self-locking inclined plane is provided with a groove capable of supporting the lower edge of the control curved surface of the cam, so that self-locking is kept after the rotating force for the knob is removed; a self-resetting slope having a protrusion at the top thereof, and wherein the height of the self-resetting slope is set such that when the control curved surface of the cam reaches the top of the slope, further rotation of the cam is restricted by the protrusion at the top of the self-resetting slope, thereby being reversely rotationally reset after the rotational force to the knob is removed.

In the knob switch, the slider includes at least two control slopes, and the at least two control slopes are the same type of control slope, or a combination of a self-locking slope and a self-resetting slope, or the slider is formed by combining two slider assemblies with each other, wherein one of the two slider assemblies has a self-locking slope and the other has a self-resetting slope.

According to the knob switch, the inner side of the fixed seat is provided with the angle limiting stop block, the edge of the top of the cam is provided with the boss, and the angle limiting stop block and the boss are matched to limit the rotatable angle limit of the cam.

In the rotary switch described above, the limit position to which the control curved surface of the cam can move along the self-resetting slope defines the rotatable angle limit of the cam.

In the rotary switch as described above, in the case where the slider has a self-locking slope, the self-locking slope and the cam are configured to: when the knob is rotated from a zero position to enable the control curved surface of the cam to be in contact with the self-locking inclined surface of the sliding block, the control curved surface of the cam can press the self-locking inclined surface to move downwards, and when the boss of the cam is in contact with the angle-limiting stop block inside the fixing seat to be blocked, the knob is at a first rotation angle, and at the moment, the lower end of the control curved surface of the cam can be clamped into the groove at the top of the self-locking inclined surface to realize self-locking of the knob at the first rotation angle.

The rotary switch as described above, further comprising a sleeve which is capable of being assembled with the holder, and in the case where the slider has a self-resetting slope, the self-resetting slope and the cam are configured to: the outer side surface of the self-resetting inclined plane further comprises a vertical rib, the inner side of the sleeve comprises a groove, and the vertical rib is embedded into the groove in the sleeve; when the knob is rotated to enable the control curved surface of the cam to contact the self-resetting inclined surface of the sliding block, the control curved surface of the cam can press the self-resetting inclined surface to move downwards, and the spring is compressed; when the control curved surface of the cam reaches the top of the self-resetting inclined surface, the lug at the top of the self-resetting inclined surface can prevent the control curved surface of the cam from further rotating to cross the top of the self-resetting inclined surface, and at the moment, the vertical rib moves to the bottom surface of the groove to limit the self-resetting inclined surface to continuously descend and limit the cam to continuously rotate, so that a second rotation angle is realized; when the rotating force to the knob is removed, the restoring force of the spring can enable the vertical ribs to leave the bottom surface of the groove in the sleeve, and the cam is reversely rotated and reset from the second rotating angle.

In the knob switch, the knob head bottom comprises the protruding shape, the cam internally comprises the groove, the protruding shape of the knob head bottom can be clamped into the groove in the cam to prevent reverse installation when the knob switch is assembled, the side face of the knob head comprises the hole structure, the inner side of the cam comprises the barb, and the hole structure of the knob head can be barbed to the barb of the cam to prevent relative up-and-down movement between the knob head and the cam.

As above knob switch, the knob head includes the instruction piece of light-permeable, it is equipped with axial leaded light post to instruct the piece lower part, it still includes light guide reflection structure to instruct the piece, light guide reflection structure includes the light-emitting top surface that corresponds with knob top of the head portion, and the light-emitting side that knob first lateral surface corresponds, light guide reflection structure is used for the warp the leaded light post gets into light guide reflection structure's light carries out the primary reflection, carries out the secondary reflection to the light of part primary reflection, makes the light after the reflection follow the light-emitting top surface with the light-emitting side jets out.

Drawings

To further clarify embodiments of the present invention, a more particular description of embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope.

Further, the main connection relationships of the respective components, not all the connection relationships, are shown in the drawings, and the components and the connections in the drawings are not necessarily drawn to scale in practice.

Fig. 1 is an exploded view of a rotary switch according to one embodiment of the present invention;

fig. 2A shows an exploded view of a partially assembled rotary switch according to one embodiment of the present invention;

fig. 2B shows a detail view of two cams for replacement according to an embodiment of the present invention;

fig. 2C shows a detail view of a slider according to an embodiment of the invention; and

fig. 3A illustrates a cross-sectional view of a rotary switch top in accordance with an embodiment of the present invention;

fig. 3B illustrates a cross-sectional view of a bottom of a rotary switch in accordance with an embodiment of the present invention;

fig. 3C shows a detailed exploded view of a rotary switch top according to one embodiment of the present invention;

fig. 3D illustrates a cross-sectional view of a rotary switch top with a light source and a schematic path of light propagation, according to an embodiment of the present invention;

fig. 3E shows another detailed exploded view of a rotary switch top in accordance with an embodiment of the present invention;

fig. 3F shows a perspective view including a slider and a sleeve, in accordance with an embodiment of the present invention, an

Fig. 4A, 4B, and 4C are schematic diagrams illustrating an assembled rotary switch and its rotation angle in three rotation modes according to an embodiment of the present invention.

Detailed Description

The following detailed description refers to the accompanying drawings. The drawings show, by way of illustration, specific embodiments in which the claimed subject matter may be practiced. It is to be understood that the following detailed description is intended for purposes of illustration, and is not to be construed as limiting the invention; those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto and changes may be made without departing from the scope and spirit of the claimed subject matter.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of various described embodiments. It will be apparent, however, to one skilled in the art that the various embodiments described may be practiced without these specific details. Unless defined otherwise, technical and scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

The terms "first," "second," and the like in the description and in the claims of the present application do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. An embodiment is an example implementation or example. Reference in the specification to "an embodiment," "one embodiment," "some embodiments," "various embodiments," or "other embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least some embodiments, but not necessarily all embodiments, of the technology. The various appearances "an embodiment," "one embodiment," or "some embodiments" are not necessarily all referring to the same embodiments. Elements or aspects from one embodiment may be combined with elements or aspects of another embodiment.

Fig. 1 is an exploded view of a rotary switch 100 according to an embodiment of the present invention. Fig. 2A-2C show exploded views and detailed views of a portion of components of a partially assembled rotary switch 200 according to an embodiment of the present invention. In conjunction with fig. 1 and 2A-2C, rotary switch 100 may include a rotary head 101. In one example, the rotary head 101 may include one or more of: a face mask 102; an indicator block 103 which can be assembled with the face mask 102 and which internally includes a light guide reflective structure, wherein light emitted from above and from the side of the indicator block 103 (e.g., the direction of light rays shown by the arrow in fig. 3D) is used to indicate that the rotary switch 200 is illuminated, and a light guide 105 is provided below the indicator block 103, and in one non-limiting example, the light guide 105 can be integrally formed with the indicator block 103, and in another non-limiting example, the light guide 105 can be a separate component that can be removed from the indicator block 103; the indicating block O-shaped ring 104 is sleeved above the light guide column 105 and used for preventing water; a swing handle 106 cooperatively interfaces with the face shield 102 and the indicator block 103 to form the complete swivel head 101.

As shown in fig. 2A, the entire knob head 101 bottom may have a protruding shape 1044, which in one example, may be generally semi-cylindrical, or may be other shapes. The protruding shapes 1044 can be inserted into recesses 1168 on the inside of the cam 116 as described below to confirm orientation during assembly to prevent reverse installation. Where the protruding shape 1044 is semi-cylindrical, the groove in the cam 116 may be a mating semi-cylindrical groove for receiving and mating with the protruding shape 1044. The knob head 101 may also include a coupling mechanism 1046 on a side of the bottom thereof. In one example, the coupling mechanism 1046 is a perforated structure, such as a square hole. The square hole 1046 is engageable with a barb 1166 (shown in fig. 3A) of the cam 116, as described below, for assembly thereof. For example, the apertured structure 1046 may be deformed to hang over the barbs 1166 of the cam 116 to prevent relative up and down movement between the knob head 101 and the cam 116.

One aspect of the present invention is embodied in the unique light guide reflective structure provided by indicator block 103. As shown in fig. 3D, the bottom of the knob head 101 may have transmitted light, the light is transmitted upward through the light guide 105 along the arrow direction, and the light transmitted from the light guide 105 is reflected and homogenized by the light guide reflection structure of the indication block 103, so that the outgoing light transmitted through the upper and side of the indication block 103 is uniform. In one non-limiting embodiment, the light source may be a lighted module disposed below the rotary switch. In an example of the present invention, as shown in conjunction with fig. 3D and 3E, the light guide reflective structure provided with the indicator block 103 may include one or more of the following features: the light guide reflection structure of the indication block 103 has a substantially hexahedral geometry, and includes a light exit top surface 1137 (located at the top of the knob head), a light entrance bottom surface 1131 (located on the light guide pillar) opposite to the light exit top surface, a light exit side surface 1133 (corresponding to the outer side surface of the knob head), an inner side surface 1135 opposite to the light exit side surface, and a left side surface and a right side surface corresponding to the left and right sides of the knob head. The inner side surface 1135 includes two inclined surfaces, namely a lower main reflection inclined surface 1032 and an upper auxiliary reflection inclined surface 1038 (closer to the light exit top surface), and further includes a horizontal transition section 1136 and a vertical transition section 1138 located between the two reflection inclined surfaces, wherein the axial incident light from the light guide pillar 105 is at least partially reflected by the main reflection inclined surface 1032, and after being reflected by the main reflection inclined surface 1032, is emitted to the light exit side surface 1133 as indicated by an arrow f2 in fig. 3D. Further, a hollow hole 1034 is provided in the light guide reflection structure of the indication block 103, and the hollow hole 1034 may be, for example, an ellipse shape having a major axis at an acute angle to the horizontal direction. As shown in the example of fig. 3D, the hollow aperture 1034 is offset from the light entrance path of the light guide 105 and thus does not reflect light incident from the light guide 105. However, light in the direction f2 is generated by reflection from the main reflection slope 1032, and a part of the light in the direction f2 passes through the hollow hole 1034 and is further reflected as light in the direction f1, and is emitted toward the light exit top surface 1137. As further shown in fig. 3D, at the intersection of the horizontal transition 1136 and the vertical transition 1138 of the inner side 1135, a dimple (groove) structure 1036 is provided, and the dimple structure 1036 may be recessed toward the light exit side surface 1133. The dimple structures 1036 and secondary reflective slopes 1038 can further break up the light source bright spots at the top of the light guide posts, softening the visual light source. More specifically, by providing the dimple structures 1036 and secondary reflective ramps 1038, the straight line propagation of light can be interrupted, thereby making the light transmitted out of the indicator block more uniform and thus more aesthetically pleasing. Therefore, the present invention realizes the homogenization of light by the hollow hole 1034 in the light guide reflection structure of the indicator block, the main reflection inclined plane 1032, the pit structure 1036 and the auxiliary reflection inclined plane 1038 on the inner side surface. The light guide reflection structure can realize better uniform light emitting effect and reduce the cost and complexity of material use and process manufacturing. It should also be appreciated that in the above embodiments, the secondary reflective ramps 1038 and the dimple structures 1036 are optional structures.

The indicator block 103 is also provided with structural features to facilitate assembly. For example, as shown in fig. 3C, the indication block 103 is provided with a groove structure 1031 and a raised coupling structure 1033. During assembly, the right angle barb 1022 on the face piece 102 pushes into the recess 1031 in the indicator block 103, while the coupling mechanism 1033 on the indicator block 103 inserts into the feature 1024 in the face piece 102 to assemble to limit relative up and down movement of the face piece 102 and indicator block 103. In the case where the light guide 105 is a single piece that can be removed, the light guide 105 is pressed into the knob hole in the bottom of the indicator block 103. Barb 1026 of face shield 102 and barb 1035 of indicator block 103 hook lower barb 1062 of knob 106 simultaneously (as shown in fig. 3C and 3D).

The rotary switch may also include a bezel 108. The face frame 108 may be internally threaded to mate with threads on the periphery of the mounting base 112. Other available ways of connecting the face frame 108 and the mounting base 112 may also be used. In addition, the bottom of the rotator head 101 may pass through the holder 112 to fit with the cam 116 as described below, such that rotation of the rotator head rotates the cam 116 as described further below. As shown in fig. 2A, one or more structures, such as the limited angle stop 1126 and the groove 1128 shown in fig. 2A, may be disposed along the inner side of the fixing base 112. In one non-limiting embodiment of the present invention, the fixing base 112 may include at least two oppositely disposed angle limit stoppers 1126, and four grooves 1128.

In an embodiment of the present invention, a knob sealing ring 110 may be disposed below the knob head 101 to play a waterproof role. The seal ring 110 may take the form of a V-shaped seal ring and may be tightly attached to the knob head 101 in various ways.

The rotary switch 100 may also include a cam 116. In one embodiment of the present invention, the cam 116 may be below the fixing base and may be disposed concentrically with the fixing base 112. Furthermore, as mentioned above, the cam 116 may be tightly connected with the bottom of the rotating head 101 (passing through the fixing base 112).

The cam 116 may include one or more bosses 1162. The engagement of the boss 1162 with the angle limit stop 1126 on the inside of the holder 112 defines the angular limit at which the cam 116 can be rotated, as described above. In one embodiment of the present invention, the cam 116 may include two bosses 1162. In further embodiments, the bosses 1162 may be oppositely disposed along the edge of the cam 116 (as shown in conjunction with the cross-sectional views of fig. 4A-4C). The boss 1162 of the cam 116 does not coincide with the angle limit stops 1126 of the holder 112, but is located intermediate the two angle limit stops 1126. As shown in connection with fig. 2B, the bosses 1162', 1162 "may extend different lengths along the circumference of the cam 116 to provide different gear limiting functions. In addition, a control curved surface 1164 is formed on the side surface of the cam 116. In one example, the cam 116 may have two control curves 1164. In an embodiment of the present invention, as mentioned above, the cam 116 may be closely coupled with the bottom of the rotary head 101 through a further coupling mechanism, so that the cam 116 is positioned relative to the rotary head 101 and can rotate under the control of the rotary head 101. For example, the protruding shape 1044 of the bottom of the rotator head 101 may be inserted into the groove 1168 in the cam 116. In examples where the protruding shape 1044 is semi-cylindrical, the groove 1168 of the cam 116 may be a semi-cylindrical groove that receives and mates with the semi-cylindrical shape. Other mating shapes may also be used to fit the rotator head 101 and the cam 116 together. In addition, the rotating head 101 and cam 116, when assembled together with the assembly feature, may align with a marking 1266 (e.g., the triangular marking shown in fig. 2A) on the sleeve as described below, indicating a zero position of the rotary switch.

As one non-limiting example, fig. 1 shows, for example, a three-position rotary switch cam 116 (e.g., with three positions of zero, 60 left, and 45 right, as shown in connection with fig. 4A), the cam 116 on the left side of fig. 2B shows, for example, a two-position rotary switch cam (e.g., 45 degrees left and right, as shown in connection with fig. 4C), and the cam 116 on the right side of fig. 2B shows a two-position rotary switch cam, such as may correspond to the angle of rotation of fig. 4B.

The rotary switch 100 may further include a slider 120. The slider 120 may be coaxial with the cam 116. The slider 120 may include a ramp 1204 (fig. 3B) with different heights along the edge of the slider 120. When the cam 116 rotates, the control curved surface 1164 of the cam 116 presses the inclined surface 1204 of the slider 120, so that the slider 120 slides axially toward the bottom of the rotary switch 100. The knob switch 100 may further include a slider return spring 124, and the slider return spring 124 is used to provide an axial return spring force for the movement of the slider 120. For example, in conjunction with fig. 3B, in an exemplary embodiment of the present invention, the control curved surface 1164 of the cam 116 may be placed on the inclined surface 1204 of the slider 120, and when the control curved surface 1164 of the cam 116 is rotated by the knob, the inclined surface 1204 may be pressed downward, so that the slider 120 is also moved downward as a whole.

In one embodiment of the present invention, the slider 120 includes at least one of the following various control ramps: a self-locking ramp on half 120-1 of the slider 120, the top of which has a groove 1209 capable of supporting the lower edge of the control curve 1164 of the cam 116, so as to maintain self-locking after the turning force to the knob is removed; a self-resetting ramp on the other half 120-2 of the slider 120, wherein the top of the self-resetting ramp may have a bump and the height of the self-resetting ramp is set to: when the control curve 1164 of the cam 116 reaches the top of the ramp, further rotation of the cam 116 is limited by the tab from the top of the reset ramp, so that the counter-rotation is reset after the rotational force to the knob is removed.

The slider 120 according to the present invention may comprise at least two control slopes (at this time the slider may be an integrally formed slider), which may be the same type of control slopes (as shown in fig. 2C, both slopes are self-locking slopes, thereby forming a self-locking slider), or a combination of self-locking slopes and self-resetting slopes. The slider 120 may also be formed by combining two slider assemblies with each other, wherein one of the two slider assemblies 120-1 has a self-locking ramp and the other 120-2 has a self-resetting ramp. The extreme position to which the control surface 1164 of the cam 116 is movable along the self-resetting ramp (which is stopped by the projection at the top of the self-resetting ramp) may define the angular limit of rotation of the cam 116. In addition, the beveled outer surface of the slider 120 may include vertical ribs 1206. The vertical ribs may be embedded in grooves 1267 in the inner wall of the sleeve 126. At the noted angular limit position from the reset ramp, the vertical rib 1206 can move to the bottom surface 1269 of the groove 1267, which bottom surface 1269 limits the slider 120 and its self-reset ramp from continuing downward and thereby also limits the cam 116 from continuing to rotate.

In an embodiment of the present invention, in the case that the slider 120 has a self-locking slope: when the knob head 101 is rotated from the zero position to make the control curved surface 1164 of the cam 116 contact the self-locking inclined surface of the slider 120, the control curved surface 1164 of the cam 116 presses the self-locking inclined surface to move downward, and when the boss 1162 of the cam 116 contacts the angle limit stop 1126 inside the fixing seat 112 and is stopped, the knob is at a first rotation angle, and at this time, the lower end of the control curved surface 1164 of the cam 116 is clamped into the groove 1209 at the top of the self-locking inclined surface, so that self-locking of the knob at the first rotation angle position is realized.

In the case of a slider with a self-resetting ramp: when the knob head 101 is rotated to make the control curved surface 1164 of the cam 116 contact the self-resetting inclined surface of the slider 120, the control curved surface 1164 of the cam 116 is pressed against the self-resetting inclined surface to move downwards, and the spring 124 is compressed; when the control surface 1164 of the cam 116 reaches the top of the self-resetting ramp, the protrusion on the top of the self-resetting ramp prevents the control surface 1164 of the cam 116 from further rotating past the top of the self-resetting ramp, and the vertical rib 1206 now moves to the bottom surface 1269 of the groove 1267 to restrict the self-resetting ramp from continuing downward and the cam 116 from continuing to rotate, thereby achieving a second angle of rotation; when the rotational force to the knob is removed, the return force of the spring 124 causes the vertical rib 1206 to clear the bottom surface 1269 of the groove 1267 in the sleeve 126, and the cam 116 is rotationally reset from the second rotational angle.

In examples having a lighted module below the rotary switch, the slider may accordingly be a lighted slider, where the lighted slider may be a hollow structure (e.g., fig. 2A) to allow light to pass through. In examples where there is no light-carrying module below the rotary switch, the slider may accordingly be a non-light-carrying slider that is not provided with a hollow structure for light to pass through, but may be other structures, for example, the non-light-carrying slider bottom may be a contiguous support rib, such as a bottom shaped as two semi-circles (as shown in fig. 3F at the bottom of slider 120), or a bottom shaped as a cross (not shown), or the like.

The rotary switch 100 may also include a holder O-ring 125 (which may be used for the holder), a rubber washer 128, and a fastening ring 130. As shown in fig. 3A and 3B, during assembly, the slider return spring 124 can be nested from the bottom of the slider 120, preventing the slider return spring 124 from springing out by the barbs 1208 on the slider 120, and pushing the barbs 1208 of the slider 120 into the grooves 1264 of the sleeve 126 after the vertical ribs 1206 on the surface of the slider 120 are aligned with the grooves 1267 on the inner wall of the sleeve 126. The control curve of the cam 116 may be initially placed on the flat surface 1202 of the slider 120 shown in fig. 3B during assembly. As described above, in the case where the slider 120 is composed of two separate sliders, the two separate sliders may be assembled separately using this method. In the case of an integrally formed slider 120, the entire slider 120 can then be mounted in a similar assembly principle but in one piece.

As mentioned above, the sleeve 126 may have a triangular groove mark 1266 thereon, and the triangular groove 1266 on the sleeve 126 may be referenced to an initial position from which a left hand rotation may be a left hand rotation and a right hand rotation may be a right hand rotation. Furthermore, the previously mentioned, for example, four recesses 1128 on the holder 112 can be fitted in correspondence with the bosses 1268 (for example, as shown in fig. 3B, and correspondingly four) of the sleeve 126, so that the rotation of the holder 112 can be limited.

According to the embodiment of the present invention, the above-mentioned cam 116 includes various replaceable models, and the slider 120 also includes various replaceable models, so that in the case of only replacing the slider 120 and the cam 116, different gear types are realized through the structural cooperation of the fixing base 112, the cam 116, and the slider 120, and at least one of the self-locking function and the self-resetting function is provided.

Fig. 4A, 4B, and 4C are schematic diagrams illustrating an assembled rotary switch of three types of rotary positions and its rotation angle according to an embodiment of the present invention. As one non-limiting example, fig. 4A illustrates a rotary switch with a three-position left-self-locking right-self-reset, wherein the left-most knob diagram and its lower cross-sectional view in fig. 4A may correspond to a left-hand 60 degree rotation of the knob, the middle knob diagram and its lower cross-sectional view may correspond to a zero position, and the right-most knob diagram and its lower cross-sectional view may correspond to a right-hand 45 degree rotation. Also as a non-limiting example, fig. 4B shows a rotary switch with two-position right self-locking, wherein the schematic view of the knob on the left side and the cross-sectional view below the same in fig. 4B may correspond to a zero position of the knob, and the schematic view of the knob on the right side and the cross-sectional view below the same may correspond to a right rotation of 60 degrees. Also as a non-limiting example, fig. 4C shows a rotary switch with two-position left-right self-locking, wherein the schematic view of the knob on the left side and the cross-sectional view below the same in fig. 4C may correspond to a left-handed 45 degree rotation of the knob, and the schematic view of the knob on the right side and the cross-sectional view below the same may correspond to a right-handed 45 degree rotation. It is understood that the above left-right relationships are exemplary and are relative, and that these relative orientations may be adjusted without departing from the design concepts of the present invention.

Referring to fig. 4A, the slider 120 of fig. 4A is a slider 120 in which a self-locking slope and a self-resetting slope are combined, or two slider assemblies, one having a self-locking slope and one having a self-resetting slope, are combined with each other.

When the boss (1162) of the cam is positioned in the middle of the angle limit stop 1126 of the fixed seat, the knob switch is in a zero position. Rotating the knob by a first angle (for example, 60 degrees left-handed in fig. 4A) in one direction, when the control curved surface 1164 of the cam 116 contacts the self-locking inclined surface of the slider 120, the control curved surface 1164 of the cam 116 presses the self-locking inclined surface to move downward, and when the boss 1162 of the cam 116 meets the limited angle stop 1126 inside the fixing base 112 and is stopped, the knob is at a first rotation angle (for example, 60 degrees), and at this time, the lower end of the control curved surface 1164 of the cam 116 is clamped into the groove 1209 at the top of the self-locking inclined surface, so that self-locking of the knob at the first rotation angle position is achieved.

When the knob is rotated a second angle in the opposite direction (e.g., 45 degrees right in fig. 4A), such that the control surface 1164 of the cam 116 contacts the self-resetting ramp of the slider 120, the control surface 1164 of the cam 116 rides over the self-resetting ramp and moves downward, and when the control surface 1164 of the cam 116 reaches the top of the self-resetting ramp, the protrusion on the top of the self-resetting ramp prevents the control surface 1164 of the cam 116 from further rotating past the top of the self-resetting ramp, and at this time the vertical rib 1206 also moves to the bottom surface 1269 of the groove 1267 to restrict the self-resetting ramp from continuing downward and the cam 116 from continuing to rotate, thereby achieving rotation to a second angle of rotation (e.g., 45 degrees right in fig. 3A).

When the rotational force to the rotary knob switch is removed, the return force of the spring 124 causes the vertical rib 1206 to clear the bottom surface 1269 of the groove 1267 in the sleeve 126, and the cam 116 is rotated back from the second rotational angle to the zero position.

In this case shown in fig. 4A (third gear, the slider having a self-resetting ramp and a self-locking ramp), the cam 116 may include two control curves 1164. The two control surfaces 1164 may be disposed relatively close together, for example, as shown in fig. 2A. In one embodiment, the spacing of the two control surfaces 1164 in FIG. 3A may be set such that: when one of the control surfaces 1164 depresses one ramp (e.g., a self-locking ramp, or a self-resetting ramp) of the slider, the other control surface 1164' (as in fig. 2A) at least does not depress the other ramp (e.g., a self-resetting ramp, or a self-locking ramp), but is, for example, on the same side as the control surface 1164.

In the example of FIG. 4B, two gears of zero and right 60 degrees are implemented. Specifically, the boss (1162) at the top of the cam 116 is arranged to have a certain length extending around the top edge of the cam 116, so that when the two bosses (1162) at the top of the cam 116 abut against the two angle limit stoppers (1126) at the bottom of the fixed seat respectively, the knob switch is in a zero position; when the two bosses (1162) at the top of the cam move along opposite directions to abut against the two angle limiting stoppers (1126) at the bottom of the fixing seat, the two control curved surfaces 1164 of the cam are respectively clamped into the grooves 1209 of the two self-locking sliders, so that the rotary switch is at a third rotation angle (60 degrees in the embodiment) and self-locking is realized.

In the example of fig. 4C, two shift stages of 45 degrees left-handed and 45 degrees right-handed are realized. The boss (1162) at the top of the cam 116 is configured to have a certain length extending around the top edge of the cam 116, such that when the two bosses (1162) at the top of the cam 116 abut against the two angle limit stoppers (1126) at the bottom of the fixing seat 112, respectively, the control curved surface 1164 is located in the recess formed by the two self-locking inclined surfaces, such that the knob switch is at a fourth rotation angle (e.g., 45 degrees); when the two bosses (1162) at the top of the cam move along opposite directions to abut against the two angle-limiting stoppers (1126) at the bottom of the fixing seat, the two control curved surfaces 1164 of the cam 116 are respectively clamped into the grooves 1209 at the tops of the two self-locking inclined surfaces, so that the rotary switch 100 is at a fourth rotation angle (for example, 45 degrees) along the opposite direction and self-locking is achieved.

In the case shown in fig. 4B and 4C (two-stage, slider with self-locking ramp), the cam 116 may include a control curve 1164. In a preferred embodiment, the cam 116 may include two control surfaces to maintain balance during rotation. Where the cam 116 includes two control surfaces, the two control surfaces may be oppositely disposed (as shown in FIG. 2C) to better maintain balance as the cam rotates to depress the slider ramp.

It is understood that the above angles are merely examples and not limitations, and that other angles of rotation may be provided without departing from the spirit of the present invention, and thus other angle settings are within the scope of the present application.

It should also be understood that the rotary switch 100 shown in the above embodiments is only one example embodiment of the rotary switch of the present invention. The rotary switch according to the present invention does not necessarily have to comprise or only comprise all the components shown in the figures. It is contemplated that the rotary switch of the present invention may include more or less components as long as they perform the corresponding functions.

Claims

1. A rotary switch, comprising:

a knob head;

the fixing seat is arranged below the knob head and allows at least one part of the bottom of the knob head to pass through the fixing seat;

the cam is positioned at the bottom of the fixed seat and is in butt joint with the bottom of the knob head, so that the cam can rotate under the control of the knob head, and at least one convex control curved surface is formed on the side surface of the cam; and

the sliding block and the cam are coaxial, inclined planes with different heights are arranged along the edge of the sliding block, when the cam rotates, the control curved surface of the cam presses the inclined plane of the sliding block to enable the sliding block to slide towards the bottom of the knob switch along the axial direction,

the knob head comprises an indicating block, the lower part of the indicating block is provided with an axial light guide column,

the indicating block also comprises a light guide reflection structure, the light guide reflection structure comprises a light-emitting top surface corresponding to the top of the knob head, a light-emitting bottom surface opposite to the top surface, a light-emitting side surface corresponding to the outer side surface of the knob head, an inner side surface opposite to the light-emitting side surface, a left side surface and a right side surface corresponding to the left side and the right side of the knob head,

the medial surface of light guide reflection configuration includes the primary reflection inclined plane for to coming the light of leaded light post carries out primary reflection, light guide reflection configuration still includes hollow hole for at least some light through the primary reflection inclined plane reflection carries out the secondary reflection, thereby makes the warp leaded light post gets into light of light guide reflection configuration is followed the light-emitting top surface with the light-emitting side jets out.

2. The rotary switch of claim 1, wherein the primary reflective bezel and the light guide are positioned such that light incident from the light guide propagates generally toward the light exit side after being at least partially reflected by the primary reflective bezel.

3. The rotary switch according to claim 1, wherein the hollow hole is configured not to reflect light incident from the light guide pillar but to secondarily reflect light reflected by the primary reflection slope such that the secondarily reflected light is generally transmitted toward the light exit top surface.

4. The rotary switch of claim 1, wherein the hollow bore is elliptical and the major axis of the ellipse is at an acute angle to the horizontal.

5. The rotary switch of claim 1, wherein the inner side surface of the light guide reflective structure further comprises a secondary reflective slope, the secondary reflective slope being closer to the light exit top surface than the primary reflective slope, and a horizontal transition and a vertical transition are provided between the primary reflective slope and the secondary reflective slope.

6. The rotary switch according to claim 5, wherein a pit structure is provided where the horizontal transition section and the vertical transition section of the light guide reflection structure meet.

7. The rotary switch according to claim 6, wherein the concave direction of the dimple structure is toward the light exit side.

8. The rotary switch of claim 5, wherein the secondary reflective angled surface is configured to further break up straight line propagation of light from the light guide.

9. The rotary switch according to claim 6 or 7, wherein the dimple structure is used to further scatter the straight propagation of light from the light guide.

10. The rotary switch of claim 1, wherein the knob head further comprises a face shield that mates with the indicator block, the indicator block and the face shield being assembled together via a connection mechanism.

11. The rotary switch according to claim 10, wherein the rotary switch further comprises a knob, and wherein the mask bottom comprises an upper barb, the indicating block lower portion comprises an upper barb, and the knob comprises a lower barb hooking the upper barb of the mask and the upper barb of the indicating block for fitting the knob and the mask and indicating block together.

12. A rotary switch, comprising:

a knob head;

the cam is positioned at the bottom of the fixed seat and is in butt joint with the bottom of the knob head, so that the cam can rotate under the control of the knob head, and at least one convex control curved surface is formed on the side surface of the cam;

the sliding block and the cam are coaxial, and inclined planes with different heights are arranged along the edge of the sliding block, wherein when the cam rotates, the control curved surface of the cam presses the inclined plane of the sliding block, so that the sliding block slides towards the bottom of the knob switch along the axial direction; and

a slide block return spring for providing axial return elastic force for the slide block,

the cam comprises a plurality of replaceable models, and the sliding block comprises a plurality of replaceable models, so that under the condition that only the sliding block and the cam are replaced, different gear types are realized through the structural cooperation of the fixed seat, the cam and the sliding block, and at least one of a self-locking function and a self-resetting function is provided.

13. The rotary switch of claim 12, wherein the slider comprises:

with or without a light slider;

when the slider is a light-carrying slider, the light-carrying slider comprises a hollow structure allowing light to pass through;

when the sliding block is a sliding block without a lamp, the bottom of the sliding block without the lamp comprises a supporting rib which is connected with the sliding block without the lamp.

14. The rotary switch recited in claim 12, wherein the slider includes at least one of the following control ramps:

the top of the self-locking inclined plane is provided with a groove capable of supporting the lower edge of the control curved surface of the cam, so that self-locking is kept after the rotating force for the knob is removed;

a self-resetting slope having a protrusion at the top thereof, and wherein the height of the self-resetting slope is set such that when the control curved surface of the cam reaches the top of the slope, further rotation of the cam is restricted by the protrusion at the top of the self-resetting slope, thereby being reversely rotationally reset after the rotational force to the knob is removed.

15. The rotary switch of claim 14,

the slide block comprises at least two control inclined planes, and the at least two control inclined planes are the same type of control inclined plane or a combination of a self-locking inclined plane and a self-resetting inclined plane or

The slider is formed by the mutual combination of two slider components, two slider components one has the auto-lock inclined plane, and one has from restoring to the throne inclined plane.

16. The rotary switch recited in claim 14, wherein an angle limiting stop is provided on an inner side of said fixed base, a boss is provided on an edge of said cam top, and said angle limiting stop and said boss cooperate to define an angular limit of rotation of said cam.

17. The rotary switch of claim 14, wherein the limit to which the control curve of the cam is movable along the self-resetting ramp defines an angular limit to which the cam is rotatable.

18. The rotary knob switch according to claim 14, wherein the rotary knob switch further comprises a sleeve, and further comprising a vertical rib on an outer side surface of the self-resetting ramp, the sleeve comprising a groove on an inner side thereof, wherein the vertical rib is embedded in the groove in the sleeve.

19. The rotary switch recited in claim 12, wherein the knob stem includes a protruding shape and the cam includes a groove therein, the protruding shape of the knob stem being capable of snapping into the groove in the cam to prevent reverse installation when assembled, and wherein

The side surface of the knob head comprises a hole structure, the inner side of the cam comprises a barb, and the hole structure of the knob head can be barbed to the barb of the cam so as to prevent the knob head and the cam from moving up and down relatively.

20. The rotary switch according to claim 12, wherein the knob head includes a light-permeable indicator block, an axial light guide pillar is disposed at a lower portion of the indicator block, the indicator block further includes a light guide reflection structure, the light guide reflection structure includes a light exit top surface corresponding to a top portion of the knob head and a light exit side surface corresponding to a lateral surface of the knob head, the light guide reflection structure is configured to reflect light entering the light guide reflection structure through the light guide pillar for a first time, and reflect part of the light reflected for the first time for a second time, so that the reflected light is emitted from the light exit top surface and the light exit side surface.