Switch knob mechanism convenient to hold by hand and handle

Abstract

The utility model discloses a switch knob mechanism convenient to hold by hand and a handle. The switch knob mechanism comprises a fixed seat; the knob is rotationally arranged on the periphery of the fixed seat; the fixed block is arranged at one end of the fixed seat and is opposite to the knob at an interval; the vibrating needle assembly is arranged on the side, facing the fixing block, in the rotary knob, and the vibrating needle assembly comprises a first vibrating needle and a second vibrating needle which are adjacently arranged inside and outside; the circuit board is arranged on the face, facing the rotary knob, of the fixing block, the face, facing the rotary knob, of the circuit board is provided with an arc-shaped conductive piece which extends in the circumferential direction and abuts against the first elastic needle, and the face, facing the rotary knob, of the circuit board is further provided with a plurality of conductive contacts which are distributed at intervals in the circumferential direction and abut against the second elastic needle. And the conductive contacts are arranged on the inner side or the outer side of the arc-shaped conductive sheet at intervals. The switch knob mechanism provided by the utility model has the characteristics of simple and beautiful modeling, compact structure and comfortable hand feeling, and is especially suitable for being applied to handheld products.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical rehabilitation equipment, and specifically relates to a switch knob mechanism and handle convenient for hand holding. BACKGROUND

[0002] Switch knobs are widely applied and are used on electrical appliances in various fields such as household appliances, medical treatment and industry. The main function thereof is to control electrical appliances to start, stop, shift gears and adjust speed through the rotation operation of hands.

[0003] The existing switch knobs generally include the following types:

[0004] 1. The switch knob disclosed in CN103474263A has a triangular protruding part, which is split from a decorative ring and is connected through a stand and a clamping groove to facilitate the replacement of the decorative ring. However, such a knob is clumsy and unattractive on handheld devices, and there is a market demand for a more rounded and smooth operation knob without protrusions.

[0005] 2. Some switch knobs generally include an injection-molded decorative cap, which is connected to an operating member with a metal spring through buckles and the like. The rotation of the cap can drive the metal spring to select the contacts on the PCB. For example, CN214312803U describes a selection switch knob assembly. Another common type is the steam iron knob disclosed in CN203160005U, which has a cylindrical protrusion with a groove. The D-shaped hole on the back is connected to the D-shaped shaft of the encoder, thereby driving the internal electrical components to switch gears. However, with the progress of manufacturing and the increasing demand for products, electrical appliances are becoming smaller and more handheld. Although these two types of knobs are simple, they have poor operation feel and are not attractive on handheld products.

[0006] 3. The mechanical switch knob disclosed in CN207800452U can select the contacts of the mechanical switch on the PCB through the rotation of the ignition valve. However, it does not have a force feedback structure, and the operation feel depends entirely on the elasticity of the ignition valve. For example, the knob of CN214312803U moves the shaft core through buckles, and the shaft core has a flange structure. The flange drives the spring sheet to generate resistance, resulting in poor operation feel.

[0007] 4. The switch knob stepless speed regulation structure disclosed in CN216054444U generates the feeling of being moved by the cooperation of the toothed surface in the knob and the spring telescopic top pin. The driving mechanism connected with the knob is the rotating shaft, magnet or grating matched with the encoder, Hall sensor or grating sensor. Based on the signal transmission of electricity, magnetism and light, the principle is more susceptible to electromagnetic interference and attack, and the safety and reliability are not as good as the mechanical type. Therefore, in some particularly important scenes, it is still more stable and reliable to adopt the mechanical structure. Utility model content

[0008] The utility model aims at overcoming the prior art defects, providing a switch knob mechanism and handle convenient to hand, which has the characteristics of simple and beautiful shape, compact structure and comfortable feeling, and is especially suitable for the application of handheld products.

[0009] In the first aspect, in order to solve the above technical problems, the utility model provides a switch knob mechanism convenient to hand, which comprises:

[0010] A fixed seat;

[0011] A knob is rotatably arranged on the outer periphery of the fixed seat;

[0012] A fixed block is arranged at one end of the fixed seat and is arranged in a spaced-apart manner towards the knob;

[0013] A needle assembly is arranged on one side of the knob facing the fixed block, and the needle assembly comprises two first and second elastic needles arranged in close proximity inside and outside;

[0014] A circuit board is arranged on one side of the fixed block facing the knob, and the circuit board is provided with an arc-shaped conductive sheet extending in the circumferential direction and abutting against the first elastic needle on one side of the circuit board facing the knob. The circuit board is also provided with a plurality of conductive contacts distributed in the circumferential direction and abutting against the second elastic needle on one side of the circuit board facing the knob, and the conductive contacts are arranged on the inner side or outer side of the arc-shaped conductive sheet. The circuit board is recessed at positions corresponding to the arc-shaped conductive sheet and the conductive contacts.

[0015] Further, the middle protrusion of the fixed seat is provided with a cylindrical fixed shaft, and a wire hole is arranged in the center of the fixed shaft along the axial direction for the cable to pass through. The knob is rotatably arranged on the outer periphery of the fixed shaft, and the fixed block is arranged at the end of the fixed shaft away from the fixed seat.

[0016] Further, the switch knob mechanism further comprises at least one ball assembly arranged between the fixed shaft and the knob, an end of the knob away from the fixed block is recessed with a guide groove arranged around the fixed shaft and being a regular polygon, the ball assembly comprises a mounting sleeve with a groove, a ball arranged in the groove, and an elastic member arranged between the ball and the bottom of the groove, the groove has a slot with a diameter smaller than the outer diameter of the ball, and the front end of the ball protrudes from the slot of the groove and abuts against the guide groove; the outer periphery of the fixed shaft is provided with at least one mounting seat corresponding to the ball assembly, the outer side of the mounting seat is recessed with a containing groove containing the ball assembly, and one end of the ball assembly protrudes from the mounting seat.

[0017] Further, one side of the knob facing the fixed block is recessed with a fan-shaped groove, the fan-shaped groove is provided with a fan-shaped stop piece, and the outer periphery of the fixed shaft is recessed with a ring groove engaged with the inner periphery of the stop piece; the upper end of the guide groove is recessed with a limiting groove extending in the circumferential direction, and the upper end of the mounting seat is protruded with a limiting protrusion inserted into the limiting groove.

[0018] Further, one side of the knob facing the fixed block is further recessed with a groove, the groove is provided with a spring pin seat, and the spring pin seat is provided with a containing groove containing the spring pin assembly; the groove and the fan-shaped groove are arranged on two sides of the fixed shaft.

[0019] Further, a cavity is formed between the circuit board and the fixed block, and the fixed block is provided with a via hole through which a wire passes and communicates with the cavity.

[0020] Further, the lower end of the fixed seat is provided with a gear position mark at a position corresponding to each of the conductive contacts, the outer periphery of the knob is provided with a gear recognition point matched with the gear position mark, and the outer periphery of the knob is further provided with a plurality of anti-skid grooves distributed at intervals.

[0021] Further, the switch knob mechanism further comprises a wire sleeve arranged in the threading hole in an up-down manner and used for fixing the cable, the threading hole is a tapered hole with a small lower end and a large upper end, and the wire sleeve is a tapered wire sleeve matched with the threading hole; a plug-in fixing groove is formed between the wire sleeve and the end of the fixed shaft, a locking member for pressing the fixed block downward is inserted into the plug-in fixing groove, and the end of the fixed shaft is recessed with a stop step on both sides, and the fixed block is sleeved on the stop step.

[0022] Further, the outer side end of the locking member extends outwardly beyond the fixed shaft, the cable is provided with a cable clamp threadedly connected with the outer side end of the locking member, and an elastic sleeve is arranged between the outer side end of the locking member and the cable.

[0023] The utility model discloses a switch knob mechanism convenient to hold, which comprises a fixed seat, a knob rotatably arranged on the outer periphery of the fixed seat, a fixed block arranged at one end of the fixed seat and oppositely arranged with the knob, a spring needle assembly arranged on one side of the knob facing the fixed block, a circuit board arranged on one side of the fixed block facing the knob, and a plurality of groups of conductive groups arranged on one side of the circuit board facing the knob and matched with the spring needle assembly.

[0024] Fixed seat;

[0025] Knob, which is rotatably arranged on the outer periphery of the fixed seat;

[0026] Fixed block, which is arranged at one end of the fixed seat and oppositely arranged with the knob;

[0027] Spring needle assembly, which is arranged on one side of the knob facing the fixed block, the spring needle assembly comprising two first spring needles and second spring needles arranged in close proximity;

[0028] Circuit board, which is arranged on one side of the fixed block facing the knob, and a plurality of groups of conductive groups are arranged on one side of the circuit board facing the knob and matched with the spring needle assembly, the plurality of groups of conductive groups are arranged along the circumferential direction of the circuit board, the conductive groups comprise first conductive contacts and second conductive contacts respectively corresponding to the first spring needles and the second spring needles, and the circuit board is recessed at positions corresponding to the first conductive contacts and the second conductive contacts.

[0029] Third aspect, the utility model discloses a handle, comprising the switch knob mechanism of any one of the first aspect or the second aspect.

[0030] The utility model has the following beneficial effects:

[0031] 1、 the utility model discloses, utilize oppositely arranged knob and fixed block, and set up matched spring needle assembly and circuit board on the opposite face of both, pass through spring needle assembly and arc conductive sheet and one conductive contact on circuit board, to in the process of rotating knob, corresponding conductive contact at different positions is conducted, realizes the gear adjustment of this switch knob mechanism, also is not disturbed by external electromagnetic, has the characteristics such as simple and beautiful appearance, compact structure and comfortable operation feeling, especially suitable for the application of handheld product.

[0032] 2、 the knob does not have the structure of protruding, but adopts the structure of setting recessed stripe on the circular arc surface to increase the touch and antiskid, and the inside is simple, is integrated into a whole module, is convenient for setting in the handle inside, and compared with the contact conduction of metal sheet and resistance sheet in the prior art to select the gear mode, the installation and procurement cost of spring needle assembly are lower, and the cost is controllable.

[0033] 3. A polygonal groove is provided in the knob to cooperate with the marble assembly on the fixed seat. When the knob is inserted into the fixed seat, the marble on the marble assembly can be stuck in the polygonal groove. The marble can continuously resist the groove wall under the action of the spring force. When the knob is turned to rotate relative to the fixed seat, the marble slides relative to the side wall of the polygonal groove from one corner to another. In this process, the change in the center distance causes the compression and release of the spring, thereby producing a shifting feel, a good operating feel, and good stability of the mechanical knob switch. It also has the characteristics of simple installation and low cost.

[0034] 4. A conical positioning structure is formed by combining a conical wire threading hole and a conical wire sleeve to realize positioning of the lower end of the cable passed through the wire sleeve, and the upper end of the cable is locked by a threaded connection between the cable clamp and the locking piece, thereby forming a double locking effect on the cable passed through the center of the switch knob at the upper and lower ends, and the wire sleeve tightens the cable uniformly throughout the entire circumference, which is more stable and aesthetically pleasing; the existing method usually uses a pressure plate, a clamp, etc. to squeeze the cable onto the fixed plate, which is rough and unsightly.

[0035] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute an improper limitation of the present invention. In the drawings:

[0037] Figure 1 Schematic diagram of the switch knob mechanism in the embodiment;

[0038] Figure 2 A schematic diagram of the switch knob mechanism in another embodiment from another perspective;

[0039] Figure 3 This is an exploded schematic diagram of the switch knob mechanism in the embodiment;

[0040] Figure 4 is a cross-sectional view of the switch knob mechanism in the embodiment;

[0041] Figure 5 A schematic diagram of a fixing seat in an embodiment;

[0042] Figure 6 is a cross-sectional view of a marble assembly in an embodiment;

[0043] Figure 7 A schematic diagram of a knob in an embodiment;

[0044] Figure 8 A schematic diagram of another perspective of the knob in the embodiment;

[0045] Figure 9 Figure 6 is a schematic view of the combination of the fixed block and the circuit board in Example 1;

[0046] Figure 10 Figure 6 is a schematic view of the combination of the fixed block and the circuit board in Example 1;

[0047] Figure 11 Figure 6 is a schematic view of the combination of the fixed block and the circuit board in Example 1;

[0048] Figure 12 Figure 6 is a schematic view of the combination of the fixed block and the circuit board in Example 1;

[0049] Figure 13 Figure 6 is a schematic view of the combination of the fixed block and the circuit board in Example 1;

[0050] Figure 14 Figure 6 is a schematic view of the combination of the fixed block and the circuit board in Example 1; DETAILED DESCRIPTION

[0051] In order to more fully understand the technical content of the utility model, the utility model will be further introduced and explained in combination with the drawings and specific embodiments; it needs to be explained that if there are "first", "second" and the like description in the text, it is used to distinguish different components and the like, and does not represent the order, and also does not limit that "first" and "second" are different types.

[0052] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor all belong to the protection scope of the utility model.

[0053] Example 1

[0054] As Figures 1 to 10As shown, the hand-held switch knob mechanism 100 shown in the embodiment includes a fixed seat 1, a knob 2, a fixed block 3, a spring needle assembly and a circuit board 4. The upper end of the fixed seat 1 is provided with a cylindrical fixed shaft 10 protruding upward in the middle, and the center of the fixed shaft 10 is provided with a threading hole 11 for cable threading along the axial direction. The knob 2 is rotatably arranged on the outer periphery of the fixed shaft 10. The fixed block 3 is arranged at the end of the fixed shaft 10 away from the fixed seat 1 and above the knob 2, so that the knob 2 and the fixed block 3 are arranged in opposite directions. The spring needle assembly is arranged on one side of the knob 2 facing the fixed block 3. The spring needle assembly includes two first spring needles 5 and second spring needles 6 arranged in close proximity to the inner and outer periphery, i.e. the side edges of the first spring needles 5 and the second spring needles 6 abut to form a continuous conductive group, and the first spring needles 5 and the second spring needles 6 are arranged on two different circumferential lines. The circuit board 4 is fixed to one side of the fixed block 3 facing the knob 2 by screws. The side of the circuit board 4 facing the knob 2 is provided with an arc-shaped conductive sheet 41 extending in the circumferential direction and abutting the first spring needles 5, i.e. the arc-shaped conductive sheet 41 is distributed in a fan shape. During rotation of the knob 2, the first spring needles 5 can continuously conduct with the arc-shaped conductive sheet 41 in the fan-shaped area, realizing electrical connection between the two, and the side of the circuit board 4 facing the knob 2 is also provided with a plurality of conductive contacts 42 distributed in the circumferential direction and abutting the second spring needles 6, and the conductive contacts 42 are arranged on the inner side or the outer side of the arc-shaped conductive sheet 41, i.e. the distribution area of the conductive contacts 42 on the circumference is located on one side of the arc-shaped conductive sheet 41, forming adjacent arrangement. During rotation of the knob 2, the second spring needles 6 can be sequentially and correspondingly conducted with the plurality of conductive contacts 42 distributed in the circumference, and then the electrical connection between the single conductive contact and the arc-shaped conductive sheet is realized through the spring needle assembly, forming a conductive loop.

[0055] It can be understood that the number of conductive contacts 42 is determined according to the specific number of gears of the switch knob, for example, Figure 2 As shown, when the switch knob has five gears (including 0, 1, 2, 3 and 4 gears), the number of conductive contacts can be four, corresponding to gears 1 to 4 among the five gears, and no conductive contact is needed for gear 0, or the number of conductive contacts can be five, corresponding to the five gears, but the conductive contact for gear 0 does not conduct with the circuit board 4, only serving as a rotating positioning and operating feel for gear adjustment.

[0056] In an embodiment, the lower end of the fixed seat 1 is provided with gear marks (i.e. numbers 0, 1, 2, 3 and 4) at positions corresponding to each conductive contact 41, and the outer periphery of the knob 2 is recessed with a gear identification point 20 matched with the gear marks. The gear identification point 20 corresponds to which gear mark indicates that the gear is adjusted to the gear recorded by the gear mark, and the outer periphery of the knob 2 is also provided with a plurality of spaced-apart anti-slip grooves 25 to increase the touch and anti-slip during rotation operation.

[0057] In an embodiment, in order to better feel the rotation of the second ejector pin 6 to a certain position of the conductive contact and abut against the conductive contact, the circuit board 4 is recessed at positions corresponding to the arc-shaped conductive sheet 41 and the conductive contact 42, forming a rotation stop touch.

[0058] In an embodiment, as shown in Figures 4 to 8 the switch knob mechanism further comprises two symmetrical ball assemblies 7 arranged between the fixed shaft 10 and the knob 2. The knob 2 is recessed with a guide groove 21 around the fixed shaft 10 at the lower end away from the fixed block 3, and the guide groove 21 is a regular polygon. The ball assembly 7 comprises a mounting sleeve 71 with an inner groove 70, a ball 72 arranged in the inner groove 70, and an elastic member 73 arranged between the ball 72 and the bottom of the inner groove 70. The slot diameter of the inner groove 70 is smaller than the outer diameter of the ball 72, thereby forming an outer limiting structure for the ball 72 to avoid the ball 72 from being separated from the mounting sleeve 71, and the front end of the ball 72 protrudes from the slot of the inner groove 70 under the action of the elastic member 73 and continuously abuts against the guide groove 21. Preferably, the elastic member 73 is a spring.

[0059] In the above, the polygonal groove in the knob cooperates with the ball assembly on the fixed seat. When the knob is sleeved into the fixed seat, the ball on the ball assembly can be clamped into the polygonal groove. The ball can continuously abut against the groove wall under the action of the spring force. When the knob is rotated relative to the fixed seat, the ball slides relative to the side wall of the polygonal groove from one corner to another corner. In this process, the compression and release of the spring caused by the change of the center distance generates the damping feeling of gear shifting, and the operation feeling is good. The strength of the feeling depends on the spring constant of the spring. The spring with a suitable spring constant can be selected according to actual needs, that is, the force can be adjusted. The mechanical knob switch has good stability, simple installation, and low cost.

[0060] As a preferred embodiment, as shown in Figure 5 the outer periphery of the fixed shaft 10 is provided with two mounting seats 12 corresponding to the ball assemblies 7. The outer side of the mounting seat 12 is recessed with a containing groove 13 containing the ball assembly 7 in the radial direction, and one end of the ball assembly 7 protrudes from the mounting seat 12 for abutting against the groove wall of the guide groove.

[0061] In an embodiment, taking the example of the switch knob mechanism having five gears of 0 / 1 / 2 / 3 / 4, the five gears are distributed at an interval of 45 degrees around the center of the circle, and the corresponding conductive contacts are also distributed at an interval of 45 degrees around the center of the arc-shaped conductive sheet 41 on one side of the arc-shaped conductive sheet 41, that is, after rotating by 45 degrees, the second elastic needle 6 abuts against one of the conductive contacts to form one gear, and when the knob 2 is continuously turned, the gears can be switched among the gears; in order to match the rotation angle of the knob when switching between two adjacent gears, the guide groove 21 is designed as a regular octagon, so that when the knob 2 is rotated, the ball 72 rotates through one side of the regular octagon every 45 degrees, thereby generating a damping feeling of gear shifting.

[0062] Of course, it can be understood that the guide groove can also be designed as other polygons according to the gear distribution and the required rotation angle between adjacent gears, such as a regular hexagon, a regular pentagon, etc.

[0063] As a preferred, the groove edge of the guide groove 21 can also be designed as a larger arc, and the arc transition can improve the smoothness and fluency of the rotation of the knob 2.

[0064] In an embodiment, as shown in Figure 5 and Figure 7 the upper end of the guide groove 21 is recessed with a limiting groove 22 extending in the circumferential direction to form an arc-shaped limiting structure, and the upper end of the mounting seat 12 is protruded with a limiting protrusion 14 inserted into the limiting groove 22, the limiting protrusion 14 and the limiting groove 22 are matched to limit the circumferential rotation of the knob 2, and the knob 2 can only rotate back and forth within the range of the limiting groove 22.

[0065] In an embodiment, as shown in Figures 4 to 8 one side of the knob 2 facing the fixed block 3 is recessed with a fan-shaped groove 23, and a fan-shaped stop sheet 8 is fixed in the fan-shaped groove 23 by a screw, and the outer periphery of the fixed shaft 10 is recessed with a ring groove 15 matched with the inner periphery of the stop sheet 8, that is, the stop sheet 8 is attached to the bottom surface of the fan-shaped groove 23 and is pushed towards the center of the shaft, and is embedded in the ring groove 15 of the fixed shaft 10, and is locked on the corresponding threaded hole of the knob 2 by a screw, thereby limiting the axial movement of the knob 2 relative to the fixed seat 1, and forming an axial fiber structure of the knob.

[0066] In an embodiment, as shown in Figures 8 to 9 one side of the knob 2 facing the fixed block 3 is also recessed with a recess 24, and an elastic needle seat 51 is embedded in the recess 24 by a tight fit, and the elastic needle seat 51 is provided with a containing groove 52 containing an elastic needle assembly, and one end of the elastic needle assembly protrudes out of the elastic needle seat 51; the recess 24 and the fan-shaped groove 23 are separately arranged on both sides of the fixed shaft 10 and do not interfere with each other.

[0067] Optionally, the first and second elastic needles 5 and 6 are retractable copper needles, which are in contact with each other and embedded in the accommodating grooves of the elastic needle seat 51 side by side; the retractable copper needle is a mature product in the prior art, which can be directly purchased on the market, and the principle is not described here.

[0068] In an embodiment, as shown in Figures 1 to 4 A cavity 30 is formed between the circuit board 4 and the fixing block 3, and a through hole 31 is provided on the fixing block 3 for the wire to pass through and communicate with the cavity 30. When the switch knob mechanism is applied to a handle product, the wire between the main board in the handle and the circuit board 4 can pass through the through hole 31, which facilitates the electrical connection between the circuit board and the external application product.

[0069] In an embodiment, as shown in Figures 1 to 5 The switch knob mechanism further includes a wire sleeve 9 which is embedded in the wire hole 11 and used for fixing the cable 101. The wire hole 11 is a tapered hole with a small lower part and a large upper part, and the wire sleeve 9 is a tapered wire sleeve which is matched with the wire hole 11. The taper of the wire hole 11 and the wire sleeve 9 is preferably 1:15, so that a tapered positioning is formed at the bottom after the combination of the two. The fixing block 3 is sleeved on the stop step 16 which is concave on both sides of the end of the fixing shaft 10. An insertion fixing groove is formed between the wire sleeve 9 and the end of the fixing shaft 10, and a locking piece 91 is inserted in the insertion fixing groove for pressing the fixing block 3 downward. That is, the stop step 16 and the locking piece 91 form an up-down limiting structure for the fixing block 3, and the locking piece 91 can simultaneously press the wire sleeve 9 and the cable 101 inward, thereby further providing a holding force to the upper end of the cable.

[0070] In an embodiment, as shown in Figure 4 The outer side end of the locking piece 91 extends outwardly from the fixing shaft 10. The cable 101 is provided with a cable clamp 102 which is threadedly connected with the outer side end of the locking piece 91, so as to lock the upper end of the cable on the locking piece 91, and cooperate with the tapered positioning of the lower end, thereby forming a double locking effect on the cable. The wire sleeve tightens the cable uniformly and consistently in the entire circumference, and the stability and aesthetics are better. An elastic sleeve 103 is further provided between the outer side end of the locking piece 91 and the cable 101, so as to improve the clamping force and fixing force of the cable.

[0071] Embodiment 2

[0072] As shown in Figure 11 The embodiment further provides another switch knob mechanism which is convenient to hold, and the structure thereof is basically the same as that of the embodiment. The difference lies in that the structure for cooperating with the elastic needle assembly on the circuit board is not the same, and the specific structure is as follows.

[0073] Several conductive groups cooperating with the spring pin assembly are provided on the side of the circuit board 4 facing the knob 2. The several conductive groups are arranged at intervals along the circumferential direction of the circuit board. The conductive groups include a first conductive contact 200 and a second conductive contact 201 that respectively correspond to the first spring pin and the second spring pin, forming a double-point contact connection.

[0074] Preferably, recesses are formed on the circuit board at positions corresponding to the first conductive contacts 200 and the second conductive contacts 201 .

[0075] In other different implementation cases, the first conductive contact and the second conductive contact of the same conductive group can also be arranged on the same circumference and adjacent to each other, and the two first elastic pins and the second elastic pins of the marble assembly are also correspondingly arranged on the same circumference and respectively cooperate with the first conductive contact and the second conductive contact.

[0076] Example 3

[0077] like Figures 12 to 14 As shown, this embodiment provides a handle, including the switch knob mechanism as described in Example 1 or Example 2, and also including a handle tube 300 fixed by screws and sleeved on the outside of the fixed block 3, and a main board 301 electrically connected to the circuit board 4 and the cable 100 respectively is provided in the handle tube 300, and the wire connecting the main board 301 and the circuit board 4 can be passed through the through hole 31.

[0078] Preferably, a decorative cover 400 is mounted on the outside of the handle tube 300 to cover the screw heads.

[0079] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A hand-held switch knob mechanism, characterized in that: include: Fixed seat; a knob rotatably disposed on the outer periphery of the fixing seat; A fixing block, which is provided at one end of the fixing seat and spaced apart from the knob; An elastic needle assembly is provided on a side of the knob facing the fixed block, and the elastic needle assembly includes a first elastic needle and a second elastic needle arranged adjacent to each other. A circuit board is provided on a side of the fixed block facing the knob, and an arc-shaped conductive sheet is provided on the side of the circuit board facing the knob, which extends circumferentially and abuts against the first elastic pin. A plurality of conductive contacts are also provided on the side of the circuit board facing the knob, which are distributed at intervals along the circumference and abut against the second elastic pin, and the conductive contacts are spaced apart on the inner side or the outer side of the arc-shaped conductive sheet.

2. The switch knob mechanism according to claim 1, wherein: The middle protrusion of the fixing seat is provided with a columnar fixing shaft, and the center of the fixing shaft is axially penetrated by a threading hole for the cable to pass through; the knob is rotatably arranged on the outer periphery of the fixing shaft, and the fixing block is arranged at the end of the fixing shaft away from the fixing seat.

3. The switch knob mechanism according to claim 2, wherein: It also includes at least one marble assembly arranged between the fixed shaft and the knob, and a guide groove in the shape of a regular polygon is recessed at one end of the knob away from the fixed block and arranged around the fixed shaft. The marble assembly includes a mounting sleeve with a groove, a marble arranged in the groove, and an elastic member arranged between the marble and the bottom of the groove. The notch diameter of the groove is smaller than the outer diameter of the marble, and the front end of the marble protrudes from the notch of the groove and abuts against the guide groove; the outer periphery of the fixed shaft is provided with at least one mounting seat corresponding to the marble assembly, and the outer side of the mounting seat is recessed with an accommodating groove for accommodating the marble assembly, and one end of the marble assembly protrudes from the mounting seat.

4. The switch knob mechanism according to claim 3, wherein: A fan-shaped groove is recessed on one side of the knob facing the fixed block, a fan-shaped stopper is provided in the fan-shaped groove, and an annular groove is recessed on the outer periphery of the fixed shaft to engage with the inner periphery of the stopper; a limiting groove extending in the circumferential direction is recessed on the upper end of the guide groove, and a limiting protrusion is provided on the upper end of the mounting seat to be inserted into the limiting groove.

5. The switch knob mechanism according to claim 4, wherein: A groove is further provided on one side of the knob facing the fixed block, a spring pin seat is provided in the groove, and a receiving groove for accommodating the spring pin assembly is provided on the spring pin seat; the groove and the fan-shaped groove are respectively provided on both sides of the fixed shaft.

6. The switch knob mechanism according to claim 5, wherein: A cavity is formed between the circuit board and the fixed block, and the fixed block is provided with a through hole for the wire to pass through and communicate with the cavity; the outer periphery of the lower end of the fixing seat is provided with a gear mark at a position corresponding to each of the conductive contacts, the outer periphery of the knob is provided with a gear identification point that cooperates with the gear mark, and the outer periphery of the knob is also provided with a plurality of anti-slip grooves distributed at intervals.

7. The switch knob mechanism according to claim 6, wherein: It also includes a wire sleeve that is passed through the wire threading hole from top to bottom and is used to fix the cable. The wire threading hole is a tapered hole that is smaller at the bottom and larger at the top, and the wire sleeve is a tapered wire sleeve that is adapted to the wire threading hole. A plug-in fixing groove is formed between the wire sleeve and the end of the fixed shaft, and a locking piece for pressing the fixed block downward is inserted on the plug-in fixing groove. Stop steps are recessed on both sides of the end of the fixed shaft, and the fixed block is sleeved on the stop steps.

8. The switch knob mechanism according to claim 7, wherein: The outer end of the locking piece extends outward from the fixing shaft, the cable is provided with a cable clamp threadedly connected to the outer end of the locking piece, and an elastic jacket is provided between the outer end of the locking piece and the cable.

9. A switch knob mechanism that is easy to hold, characterized in that: include: Fixed seat; a knob rotatably disposed on the outer periphery of the fixing seat; A fixing block, which is provided at one end of the fixing seat and is arranged facing the knob; An elastic needle assembly is provided on a side of the knob facing the fixed block, and the elastic needle assembly includes two first elastic needles and a second elastic needle arranged adjacent to each other; A circuit board is provided on a side of the fixed block facing the knob, and a plurality of conductive groups cooperating with the spring pin assembly are provided on the side of the circuit board facing the knob. The plurality of conductive groups are spaced apart along the circumferential direction of the circuit board, and the conductive groups include a first conductive contact and a second conductive contact respectively corresponding to the first spring pin and the second spring pin.

10. A handle, characterized in that: The invention comprises a switch knob mechanism according to any one of claims 1 to 9.

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