Multi-gear adjusting mechanism and switch
By designing knobs and elastic components in multi-speed switches and using abutment bumps to drive the moving shrapnel movement, the existing multi-speed switches have solved the problem of large size and poor practicality, and the increase in the number of gears and the improvement in practicality has been achieved.
Patent Information
- Application Number
- CN202421369125.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing multi-speed switches are large in size and are easily affected by the installation environment. They cannot adapt to equipment with small installation space, resulting in a decrease in the practicality of the switch.
Multi-speed adjustment is achieved by designing knobs and elastic components in the multi-speed adjustment mechanism, and using abutment bumps to drive the moving shrapnel movement. This design increases the number of abutting bumps in a single drive shrapnel, increases the number of gears, and adapts to different installation space needs.
It effectively avoids the lack of practicality caused by the traditional multi-speed switch by increasing the number of shrapnels to increase the number of gears, and realizes the structural optimization and practical improvement of the multi-speed adjusting mechanism and switch.
Smart Images
Figure CN222896643U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of switches, and in particular relates to a multi-gear adjustment mechanism and a switch. Background Art
[0002] A multi-position switch is a switch device that can adjust multiple different positions or positions. It is usually composed of a knob, a contact, and a position mechanism. By rotating the knob of the switch, you can select different positions to control the on and off state of the circuit. Different positions correspond to different functions or connection methods and are suitable for various circuit requirements. Multi-position switches are widely used in electronic equipment, household appliances, industrial control systems and other fields to meet different control needs.
[0003] The working principle of a multi-position switch is based on its internal mechanical structure and circuit design. When an external operating mechanism (such as a lever, knob, or slider) reaches a preset position, the contacts inside the switch change, thereby changing the state of the circuit. This change can be to connect or disconnect the circuit, depending on the design and configuration of the switch. A multi-position switch contains multiple contacts that are divided into several different parts, each of which can be independently operated. Therefore, when the external operating mechanism moves to a certain position, only the part of the contacts related to this position will change, while the other parts remain unchanged. This design allows the multi-position switch to control multiple circuits in one action, thereby improving the efficiency and flexibility of the system.
[0004] The rotating mechanism is the core of the multi-position switch, which is usually designed with a wheel or gear structure to ensure that the knob position can stay in a specific position of the gear, representing a gear. The shape, size and feel of the knob need to be considered during the design to provide a good operating experience. The design of the pin and slot is the key to keeping the terminal block in a specific position. Each gear corresponds to a slot on the terminal block, and the pin will bounce into these slots to prevent the terminal from rotating randomly. The spring system affects the rebound speed and feel of the knob. The use of a sophisticated spring design can improve the responsiveness and interactivity of the button, ensuring that the user feels smooth and accurate during operation. The contact design is a set of contacts, and each gear has a set of electrical contacts that connect to the circuit of the device. These contacts can be fixed metal contacts or contacts that move by the rotation of the knob. Optimizing the contact design can improve the stability and reliability of the switch.
[0005] In the prior art, each gear of a multi-position switch corresponds to an independent electrical contact arranged circumferentially. Therefore, the number of gears of the switch is affected by its volume. The larger the knob radius, the greater the number of electrical contacts and the richer the functions of the switch. However, large-volume multi-position switches are easily affected by the installation environment and cannot be adapted to equipment with a smaller installation space, resulting in a decrease in the practicality of the switch, which urgently needs to be improved. Utility Model Content
[0006] The purpose of the utility model is to provide a multi-position adjustment mechanism and a switch, aiming to solve at least one of the above-mentioned technical problems.
[0007] To achieve the above-mentioned purpose, an embodiment of the utility model provides a multi-speed adjustment mechanism, including a knob and an elastic component, wherein an abutment protrusion is provided at the end of the knob; at least two groups of movable spring sheets are provided on the elastic component; the abutment protrusion can move circumferentially with the rotating knob, and all the movable spring sheets are located on the moving path of the abutment protrusion, and the abutment protrusion can drive a group of movable spring sheets to move toward the electrical contact during the movement; or the abutment protrusion can simultaneously drive at least two groups of movable spring sheets to move toward the electrical contact during the movement.
[0008] Optionally, the abutting protrusion includes a first abutting portion and a second abutting portion, the first abutting portion can only drive a single group of movable elastic sheets to move, and the second abutting portion can drive one group or at least two groups of movable elastic sheets to move simultaneously.
[0009] Optionally, the width of the first abutting portion is smaller than that of the second abutting portion, and the width of the circumferential movement path of the second abutting portion is sufficient to cover at least two groups of movable elastic sheets.
[0010] Optionally, the second abutting portion comprises an inner abutting block and an outer abutting block, and the inner abutting block and the outer abutting block are concentrically arranged around the center of the mounting plane.
[0011] Optionally, the inner abutment block and the outer abutment block are distributed at staggered intervals, and the radius of the circumferential movement path of the inner abutment block is smaller than that of the outer abutment block.
[0012] Optionally, the inner abutment block and the outer abutment block are distributed at staggered intervals, and the radius of the circumferential movement path of the inner abutment block is equal to that of the outer abutment block.
[0013] Optionally, the inner abutment block and the outer abutment block are integrally arranged, and the radius of the circumferential movement path of the inner abutment block is smaller than that of the outer abutment block.
[0014] Optionally, the number of the first abutting portions and the number of the second abutting portions are at least two groups, and all the first abutting portions and the plurality of groups of the second abutting portions are staggered and distributed around the center position of the knob.
[0015] Optionally, the elastic component includes a substrate and a normally closed spring sheet, the normally closed spring sheet is arranged at the center position of the substrate, the end of the normally closed spring sheet is protruded away from the knob, the end of the movable spring sheet is fixedly connected to the substrate, the end of the movable spring sheet away from the substrate is provided with an abutment contact, and the movable spring sheet is provided with a bent convex contact protruding toward the direction of the knob, and all the bent convex contacts are located on the moving path of the abutment protrusion.
[0016] The above one or more technical solutions in the multi-gear adjustment mechanism and switch provided by the embodiment of the utility model have at least one of the following technical effects: the operator drives the knob to rotate, so that the abutting protrusion at the end of the knob rotates and moves circumferentially along the preset path. During the movement, the abutting protrusion can drive different movable springs to move at a single time, drive two groups of movable springs at different positions to move at the same time, and drive more than two groups of movable springs at different positions to move at the same time to perform multi-gear adjustment; compared with the multi-gear switch in the prior art, which is larger in size and easily affected by the installation environment, and cannot be adapted to equipment with a smaller installation space, resulting in a technical problem of reduced practicality of the switch, the multi-gear adjustment mechanism and switch provided by the embodiment of the utility model increase the number of gears by increasing the number of springs driven by the abutting protrusion at a single time, so that the driving instructions of movable springs at different positions and different numbers can correspond to different gears, effectively avoiding the situation in which the traditional multi-gear switch increases the number of gears by increasing the number of springs, resulting in a lack of practicality, effectively realizing the structural optimization of the multi-gear adjustment mechanism and the switch, and improving the practicality of the multi-gear adjustment mechanism and the switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0018] Figure 1 A schematic structural diagram of a multi-speed adjustment mechanism provided in an embodiment of the utility model.
[0019] Figure 2 for Figure 1 Structural explosion diagram of the multi-speed adjustment mechanism.
[0020] Figure 3 for Figure 1 A structural exploded diagram of the multi-speed adjustment mechanism from another angle.
[0021] Figure 4 A top view of a multi-position adjustment mechanism provided in an embodiment of the utility model.
[0022] Figure 5 A schematic cross-sectional view of a multi-speed adjustment mechanism provided in an embodiment of the utility model.
[0023] Figure 6 A schematic diagram of the structure of a knob provided in an embodiment of the utility model.
[0024] Figure 7 A schematic structural diagram of an elastic component and pins provided in an embodiment of the utility model.
[0025] Figure 8 A schematic structural diagram of a knob, an elastic component and a pin provided in an embodiment of the utility model.
[0026] Figures 9 to 18 A flow chart of multi-speed adjustment of a multi-speed adjustment mechanism provided in an embodiment of the utility model.
[0027] Among them, the reference numerals in the figure are:
[0028] 100—Multi-position adjustment mechanism 200—Base 300—Connection pin
[0029] 400—Mounting cavity 110—Knob 120—Elastic component
[0030] 500 — contacting protrusion 600 — movable spring 121 — substrate
[0031] 122—normally closed spring 610—contact head 620—bent convex contact
[0032] 210—limiting ring 111—slot 211—limiting protrusion
[0033] 510—first abutting portion 521—inner abutting block 522—outer abutting block
[0034] 520 —Second abutting portion. DETAILED DESCRIPTION
[0035] The following describes the embodiments of the present invention in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 18 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.
[0036] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0038] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.
[0039] In one embodiment of the present invention, Figures 1 to 9 As shown, a switch is provided, which includes a multi-speed adjustment mechanism, a base and connecting pins, the base is provided with a mounting cavity, the connecting pins are in multiple groups, and the multiple groups of connecting pins are respectively arranged on the bottom wall of the mounting cavity, and the ends of the connecting pins pass through the mounting cavity and extend to the outside of the base.
[0040] In one embodiment of the present invention, Figures 1 to 6 As shown, a switch is provided, which includes a multi-speed adjustment mechanism 100, a base 200 and a connecting pin 300, wherein the base 200 is provided with a mounting cavity 400, and the connecting pins 300 are in multiple groups, and the multiple groups of connecting pins 300 are respectively arranged on the bottom wall of the mounting cavity 400, and the ends of the connecting pins 300 pass through the mounting cavity 400 and extend to the outside of the base 200.
[0041] The multi-speed adjustment mechanism 100 includes a knob 110 and an elastic component 120, the knob 110 is rotatably connected to the base 200, one end of the knob 110 extends outside the base 200, and the other end of the knob 110 is located in the mounting cavity 400, and an abutment protrusion 500 is provided at the end of the knob 110 located in the mounting cavity 400; at least two groups of movable spring sheets 600 are provided on the elastic component 120; the abutment protrusion 500 can move circumferentially with the rotating knob 110, and all the movable spring sheets 600 are located on the moving path of the abutment protrusion 500, and the abutment protrusion 500 can drive a group of movable spring sheets 600 to move toward the electrical contact during the movement; or the abutment protrusion 500 can simultaneously drive at least two groups of movable spring sheets 600 to move toward the electrical contact during the movement.
[0042] The operator drives the knob 110 to rotate, so that the abutting protrusion 500 at the end of the knob 110 rotates and moves circumferentially along a preset path. During the movement, the abutting protrusion 500 can drive different movable spring pieces 600 to move at a time, drive two groups of movable spring pieces 600 at different positions to move at the same time, and drive more than two groups of movable spring pieces 600 at different positions to move at the same time to perform multi-gear adjustment; for example, the number of movable spring pieces 600 is three groups;
[0043] Method 1: The contacting protrusion 500 drives a group of movable springs 600 to move independently, which is regarded as one gear adjustment. This method can adjust the gear three times in total.
[0044] Method 2: The abutting protrusion 500 drives any two groups of movable spring sheets 600 to move at the same time, which is regarded as one gear adjustment; the abutting protrusion 500 drives three groups of movable spring sheets 600 to move at the same time, which is regarded as one gear adjustment; this method can adjust the gear four times in total.
[0045] Method 1 and method 2 can be integrated into one switch at the same time, that is, three groups of movable spring pieces 600 can realize seven groups of gear adjustment; compared with the multi-gear switch in the prior art, which is larger in size and easily affected by the installation environment, and cannot be adapted to equipment with a smaller installation space, resulting in a technical problem of reduced practicality of the switch, the multi-gear adjustment mechanism 100 and the switch provided by the embodiment of the utility model increase the number of gears by increasing the number of spring pieces driven by the abutting protrusion 500 in a single time, so that the driving instructions of the movable spring pieces 600 in different positions and different numbers can correspond to different gears, effectively avoiding the situation in which the traditional multi-gear switch increases the number of gears by increasing the number of spring pieces, resulting in a lack of practicality, and effectively realizing the structural optimization of the multi-gear adjustment mechanism 100 and the switch, and improving the practicality of the multi-gear adjustment mechanism 100 and the switch.
[0046] In another embodiment of the utility model, the elastic component 120 includes a substrate 121 and a normally closed spring 122, the normally closed spring 122 is arranged at the center of the substrate 121, the end of the normally closed spring 122 is protruded away from the knob 110, the end of the movable spring 600 is fixedly connected to the substrate 121, the end of the movable spring 600 away from the substrate 121 is provided with an abutting contact 610, and the movable spring 600 is provided with a bent convex contact 620 protruding toward the knob 110, and all the bent convex contacts 620 are located on the moving path of the abutting protrusion 500. The use of the bent convex contact 620 structure can ensure that the abutting protrusion 500 can abut against the movable spring 600 and achieve a driving effect.
[0047] In this embodiment, the abutting contact 610, the bent convex contact 620, the movable spring piece 600, the normally closed spring piece 122 and the substrate 121 are all integrally formed by stamping and casting of conductive metal. The substrate 121 is arranged in a flat plate structure. The number of the movable spring pieces 600 is four groups, and the number of the normally closed spring pieces 122 is one group. Correspondingly, the number of the connecting pins 300 is five groups. The four groups of movable spring pieces 600 are respectively located on one side of the corresponding connecting pins 300, and the normally closed spring piece 122 is always in abutment with the corresponding connecting pin 300 for powering on; the bent convex contact 620 can drive the movable spring piece 600 to move after being driven by the abutting protrusion 500. After the movable spring piece 600 is driven by the abutting protrusion 500, the corresponding abutting contact 610 can abut with the connecting pin 300, so that the connecting pins 300 corresponding to the normally closed spring piece 122 and the movable spring piece 600 are energized. The contact bump 500 does not participate in the electrical transfer in the whole process, and the electrons only move through the normally closed spring 122, the substrate 121, the movable spring 600 and the pins, thereby effectively reducing the power loss.
[0048] In this embodiment, the base 200 is provided with the limiting ring 210, and the knob 110 is provided with a plurality of groups of slots 111 spaced apart along the center circumferential direction thereof. The limiting ring 210 is provided with a limiting protrusion 211 which can protrude and extend into the slot 111. When the knob 110 is rotated to one gear, the limiting protrusion 211 moves from the original slot 111 and is engaged in the adjacent slot 111. The limiting ring 210 structure is advantageous in improving the stability of the knob 110 after the gear is adjusted. The knob 110 is loosened to jump the gear. At the same time, it can generate physical feedback to the user and optimize the switch usage experience.
[0049] like Figures 1 to 9As shown, in another embodiment of the present invention, the abutting protrusion 500 includes a first abutting portion 510 and a second abutting portion 520. The first abutting portion 510 can only drive a single group of movable spring sheets 600 to move, and the second abutting portion 520 can drive a group of movable spring sheets 600 to move. The first abutting portion 510 and the abutting portion are both arranged in an arc shape, and the first abutting portion 510 and the second abutting portion 520 are both arranged concentrically with the rotation path of the knob 110.
[0050] Specifically, during the rotation of the knob 110, the first abutting portion 510 and the second abutting portion 520 drive the corresponding movable spring piece 600 to move one by one, that is, the gear position is adjusted twice; the first abutting portion 510 and the second abutting portion 520 drive the corresponding movable spring piece 600 to move at the same time, that is, the gear position is adjusted once;
[0051] In this embodiment, the first abutment portion 510 and the second abutment portion 520 are spaced apart around the center of the rotation path of the knob 110, and the first abutment portion 510 has a certain length so that after first contacting the corresponding bending convex contact 620, it can maintain the abutment effect with the bending convex contact 620 during the rotation of the knob 110 until the second abutment portion 520 contacts the corresponding bending convex contact 620; the second abutment portion 520 has a preset length so that during the rotation of the knob 110, even after the first abutment portion 510 and the corresponding bending convex contact 620 are released from the abutment state, it still maintains the abutment state with the corresponding bending convex contact 620.
[0052] In another embodiment of the present invention, the abutting protrusion 500 includes a first abutting portion 510 and a second abutting portion 520 , wherein the first abutting portion 510 can only drive a single group of movable elastic sheets 600 to move, and the second abutting portion 520 can simultaneously drive at least two groups of movable elastic sheets 600 to move.
[0053] In this embodiment, the width of the first abutment portion 510 is smaller than that of the second abutment portion 520, so that the width of the moving path formed by the second abutment portion 520 after rotating and moving with the knob 110 is greater than that of the first abutment portion 510; wherein, the straight line where at least two groups of adjacent and spaced-apart bending convex contacts 620 are located is collinear with the diameter of the circumferential moving path of the second abutment portion 520, so that the second abutment portion 520 can simultaneously abut at least two groups of bending convex contacts 620 during the movement process.
[0054] In another embodiment of the utility model, the second abutting portion 520 includes an inner abutting block 521 and an outer abutting block 522, and the inner abutting block 521 and the outer abutting block 522 are both arranged in an arc-shaped structure, and the inner abutting block 521 and the outer abutting block 522 are arranged concentrically around the center of the installation plane. In this embodiment, the number of the movable spring pieces 600 is four groups, and the bent convex contacts 620 on the four groups of spring pieces are arranged at intervals along a straight line, and the straight line is arranged in line with the diameter of the inner abutting block 521 and the outer abutting moving path.
[0055] In another embodiment of the utility model, the inner abutment block 521 and the outer abutment block 522 are staggered and spaced, and the radius of the circumferential movement path of the inner abutment block 521 is smaller than that of the outer abutment block 522. The inner abutment block 521 and the outer abutment block 522 can respectively abut the corresponding bending convex contacts 620 one by one, and two groups of the bending convex contacts 620 are distributed on both sides of the center of the knob 110, and the distance between the bending convex contacts 620 abutted by the inner abutment block 521 and the rotation center of the knob 110 is D1, and the distance between the bending convex contacts 620 abutted by the inner abutment block 521 and the rotation center of the knob 110 is D2, wherein D1 is smaller than D2.
[0056] like Figures 1 to 9 As shown, in another embodiment of the utility model, the inner abutment block 521 and the outer abutment block 522 are staggered and spaced, and the radius of the circumferential movement path of the inner abutment block 521 is equal to that of the outer abutment block 522. The inner abutment block 521 and the outer abutment block 522 can respectively abut the corresponding bending convex contacts 620 one by one, and two groups of the bending convex contacts 620 are distributed on both sides of the center of the knob 110. The distance between the bending convex contacts 620 abutted by the inner abutment block 521 and the rotation center of the knob 110 is D1, and the distance between the bending convex contacts 620 abutted by the inner abutment block 521 and the rotation center of the knob 110 is D2, wherein D1 is equal to D2.
[0057] like Figures 1 to 9 As shown, in another embodiment of the utility model, the inner abutment block 521 and the outer abutment block 522 are integrally arranged, and the radius of the circumferential movement path of the inner abutment block 521 is smaller than that of the outer abutment block 522. The inner abutment block 521 and the outer abutment block 522 can respectively abut the corresponding bending convex contacts 620 one by one, and the two groups of the bending convex contacts 620 are located on the same side of the center of the knob 110, and the whole formed by the inner abutment block 521 and the outer abutment block 522 can abut the two groups of the bending convex contacts 620 at the same time.
[0058] In another embodiment of the present invention, the number of the first abutting portions 510 and the number of the second abutting portions 520 are at least two groups, and all the first abutting portions 510 and the plurality of groups of the second abutting portions 520 are staggered and distributed around the center position of the knob 110. The first abutting portions 510 and the second abutting portions 520 located at different positions can refer to the above embodiment. In this embodiment, the structure and position distribution of the first abutting portions 510 and the second abutting portions 520 are as follows: Figures 10 to 18 As shown, a total of nine levels of adjustment can be performed.
[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A multi-position adjustment mechanism, characterized in that: include: A knob, wherein an abutment protrusion is provided at the end of the knob; An elastic component, wherein at least two groups of movable springs are arranged on the elastic component; In which, the abutment protrusion can move circumferentially with the rotating knob, all the movable spring sheets are located on the moving path of the abutment protrusion, and the abutment protrusion can drive a group of movable spring sheets to move toward the electrical contact during the movement; or the abutment protrusion can simultaneously drive at least two groups of movable spring sheets to move toward the electrical contact during the movement.
2. The multi-gear adjustment mechanism according to claim 1, characterized in that: The abutting protrusion includes a first abutting portion and a second abutting portion. The first abutting portion can only drive a single group of movable elastic sheets to move, and the second abutting portion can drive one group or at least two groups of movable elastic sheets to move simultaneously.
3. The multi-gear adjustment mechanism according to claim 2, characterized in that: The width of the first abutting portion is smaller than that of the second abutting portion, and the width of the circumferential moving path of the second abutting portion is sufficient to cover at least two groups of movable elastic sheets.
4. The multi-gear adjustment mechanism according to claim 2, characterized in that: The second abutting portion includes an inner abutting block and an outer abutting block, and the inner abutting block and the outer abutting block are concentrically arranged around the center of the mounting plane.
5. The multi-gear adjustment mechanism according to claim 4, characterized in that: The inner abutment block and the outer abutment block are distributed at staggered intervals, and the radius of the circumferential movement path of the inner abutment block is smaller than that of the outer abutment block.
6. The multi-gear adjustment mechanism according to claim 4, characterized in that: The inner abutment block and the outer abutment block are distributed at staggered intervals, and the radius of the circumferential movement path of the inner abutment block is equal to that of the outer abutment block.
7. The multi-gear adjustment mechanism according to claim 4, characterized in that: The inner abutment block and the outer abutment block are integrally arranged, and the radius of the circumferential movement path of the inner abutment block is smaller than that of the outer abutment block.
8. The multi-gear adjustment mechanism according to any one of claims 2 to 7, characterized in that: The number of the first abutting portions and the number of the second abutting portions are both at least two groups, and all the first abutting portions and the plurality of groups of the second abutting portions are distributed in an interval and staggered manner around the center position of the knob.
9. The multi-gear adjustment mechanism according to claim 1, characterized in that: The elastic component includes a substrate and a normally closed spring sheet, the normally closed spring sheet is arranged at the center position of the substrate, the end of the normally closed spring sheet is protruded away from the knob, the end of the movable spring sheet is fixedly connected to the substrate, the end of the movable spring sheet away from the substrate is provided with an abutment contact, and the movable spring sheet is provided with a bent convex contact protruding toward the knob direction, and all the bent convex contacts are located on the moving path of the abutment protrusion.
10. A switch, characterized in that: It comprises the multi-speed adjustment mechanism as described in any one of claims 1 to 9.