Hand controller for electric adjustable furniture and electric adjustable furniture
By replacing the traditional torsion spring sliding friction with the sliding friction between the ejector component and the guide slope, the problem of short service life of electrically adjustable furniture hand controllers is solved, achieving the effect of longer service life and greater torque adjustment space.
Patent Information
- Application Number
- CN202520378561.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-05
AI Technical Summary
In existing hand controllers for electrically adjustable furniture, the torsion spring reset method causes sliding friction when the rotating shaft rotates, leading to material fatigue and fracture, and shortening its service life.
The ejector component uses sliding friction with the guide slope instead of the traditional torsion spring sliding friction. When the knob is rotated, the ejector component slides along the guide slope and compresses the elastic element. After the knob is released, the elastic element drives the ejector component to reset, thus realizing the self-resetting function.
It extends the service life of the hand controller, reduces metal fatigue and wear, improves torque adjustment range, and optimizes assembly appearance and control function versatility.
Smart Images
Figure CN223728187U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric adjustable furniture technical field especially electric adjustable furniture hand controller and electric adjustable furniture for electric adjustable furniture hand controller with self-resetting function. BACKGROUND
[0002] The prior art electric adjustable furniture hand controller has a self-resetting function, which comprises a knob seat, a circuit board fixed on the knob seat, and a knob rotatable relative to the knob seat, a sensor on the circuit board for converting the rotation angle of the knob into an electrical signal, a reset torsional spring sleeved on the rotation shaft of the knob, one torsional leg of the torsional spring connected with the knob seat, and the other torsional leg connected with the knob, the rotation of the knob causing the reset torsional spring to contract and deform, and the release of the knob causing the reset torsional spring to drive the knob to reverse and reset under the action of the restoring force, thereby realizing the self-resetting function. The use of the torsional spring reset mode causes large-area sliding friction between the rotation shaft and the reset torsional spring when the rotation shaft rotates, which leads to material fatigue fracture of the torsional spring in repeated torsion, thereby shortening the service life of the hand controller. SUMMARY
[0003] The utility model solves the technical problem of overcoming the prior art deficiencies and provides an electric adjustable furniture hand controller and electric adjustable furniture, which can effectively prolong the service life of the hand controller.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme:
[0005] The electric adjustable furniture hand controller comprises a knob seat, a circuit board, and a knob rotatable relative to the knob seat, one of the knob seat and the knob is provided with the circuit board, the circuit board is provided with a sensor for generating an electrical signal according to the relative rotation of the knob and the knob seat, one of the knob and the knob seat is provided with a reset track, the other is provided with an ejection component and an elastic element for driving the ejection component to keep in contact with the reset track, the reset track comprises a guide slope surface, when the knob is driven to rotate in a predetermined operation direction by an external force, the ejection component slides along the guide slope surface and compresses the elastic element, after the release of the knob, the elastic element forces the ejection component to slide relative to the guide slope surface to reset the knob to reverse and reset.
[0006] The hand controller in the utility model, when using, the knob is rotated to a predetermined operation direction under the action of external force, the ejecting part slides along the guide slope and compresses the elastic piece, when the external force applied on the knob is removed, the ejecting part slides relative to the guide slope under the action of the elastic piece to reset to drive the knob to reverse, so that the self-resetting function is realized.
[0007] In the above-mentioned electrically adjustable furniture hand controller, at least two reset tracks are evenly spaced around the rotation axis of the knob, and the ejecting part is one-to-one corresponding to the reset track. Such design can ensure the force balance of the knob, so as to ensure the uniform gap between the knob and the knob seat in the circumferential direction, thereby optimizing the appearance of the assembled hand controller.
[0008] In the above-mentioned electrically adjustable furniture hand controller, the ejecting part is provided with a cavity, and one end of the elastic piece is arranged in the cavity to drive the ejecting part to keep in close contact with the reset track. Alternatively, the outer circumferential side of the ejecting part is provided with a shaft shoulder, and the elastic piece is sleeved on the outer side of the ejecting part and abuts against the shaft shoulder to drive the ejecting part to keep in close contact with the reset track. Such design can improve the connection reliability of the elastic piece and the ejecting part, thereby avoiding the elastic piece and the ejecting part from falling off, and ensuring that the ejecting part and the reset track always keep in close contact.
[0009] In the above-mentioned electrically adjustable furniture hand controller, the reset track includes two guide slopes, and the two guide slopes are connected to form a V-shaped reset track. After the knob is reset, the ejecting part is in close contact with the recess of the V-shaped reset track. Such design can automatically reset the knob after the knob is released no matter the knob is rotated forward or backward by external force, and different functions can be triggered by setting the forward rotation and the backward rotation of the knob, so that the control function diversity of the hand controller can be improved. In addition, the design of the V-shaped reset track also simplifies the structure of the reset track, which is beneficial to the processing and molding of the reset track.
[0010] In the electrically-operated adjustable furniture hand controller, the reset track comprises two guide slopes and a wave section arranged between the two guide slopes, the ejecting part stays at the joint of the guide slope and the wave section after the knob rotation reset, and the rotation of the knob makes the ejecting part stay at different wave troughs of the wave section to trigger different functions. In this way, the wave section forms a multi-section hand feeling, and under the action of the reset track and the elastic member, the ejecting part can stay at different wave troughs when the knob rotates, so that the knob stays at different positions, and through the formation of different hand feelings, the sensor identifies different positions of the knob to trigger different functions, thereby increasing the human-machine interaction.
[0011] In the electrically-operated adjustable furniture hand controller, the knob comprises a first limiting part, the knob base is provided with a second limiting part in sliding cooperation with the first limiting part, and the second limiting part is used to limit the rotation angle of the first limiting part to prevent the ejecting part from being separated from the reset track. In this way, by limiting the rotation angle of the knob, the ejecting part can be prevented from being separated from the reset track due to excessive rotation of the knob, thereby ensuring the normal use of the hand controller.
[0012] In the electrically-operated adjustable furniture hand controller, the knob base or the knob provided with the ejecting part and the elastic member is provided with a guide sleeve, and the ejecting part and the elastic member are arranged in the guide sleeve. In this way, the guide sleeve can guide the extension and deformation of the elastic member and the movement direction of the ejecting part, thereby ensuring that the ejecting part always adheres to the reset track.
[0013] In the electrically-operated adjustable furniture hand controller, the knob base comprises a base and a decorative cover fixed relative to the base, one of the knob and the base is provided with a reset track, and the other is provided with an ejecting part and an elastic member for driving the ejecting part to adhere to the reset track, and the knob rotating sleeve is arranged outside the decorative cover and is limited between the base and the decorative cover. In this way, the decorative cover and the base can limit the axial direction of the knob on the rotation axis of the knob, without the need to set other structures, thereby simplifying the number of parts of the hand controller to further reduce the assembly difficulty of the hand controller.
[0014] In the electrically-operated adjustable furniture hand controller, the circuit board is mounted on the knob base, the sensor is a rotary encoder or a potentiometer, the sensor has an input shaft, the knob is connected with the input shaft and rotates synchronously, or the sensor is a micro switch, and the knob is provided with a first trigger part for triggering the micro switch.
[0015] In the electrically adjustable furniture hand controller, the ejecting part moves in the direction parallel to the rotation axis of the knob when sliding along the guide slope, the knob is floatingly arranged between the decorative cover and the base, the circuit board and the decorative cover are arranged on opposite sides of the knob, the circuit board is further provided with an elastic switch, the knob is provided with a second trigger part abutting against the elastic switch, and the knob is pressed to trigger the elastic switch by the second trigger part.
[0016] In the electrically adjustable furniture hand controller, the circuit board is mounted on the knob, the sensor is a rotary encoder or a potentiometer, the sensor has an input shaft, the knob base is connected with the input shaft and rotates synchronously, or the sensor is a micro switch, and the knob is provided with a third trigger part for triggering the micro switch.
[0017] In addition, the utility model discloses electrically adjustable furniture, the electrically adjustable furniture is electric lifting table, electric lifting table includes desktop board and is used for supporting the lifting column of desktop board, the hand controller of any one of the above technical solutions is installed on the desktop board, and the hand controller is used for controlling the lifting of the lifting column. By using the hand controller, the manufacturing cost of the electrically adjustable furniture can be further reduced.
[0018] The features and advantages of the utility model will be disclosed in detail in the following specific embodiment and drawings.
DRAWINGS
[0019] The utility model will be further explained in connection with the drawings:
[0020] Figure 1 It is the explosion schematic view of hand controller in the utility model embodiment one;
[0021] Figure 2 It is the assembly schematic view of hand controller in the utility model embodiment one;
[0022] Figure 3 It is the section of hand controller in the utility model embodiment oneFigure 1 ;
[0023] Figure 4 It is the structure schematic view of the knob seat in the embodiment one of the utility model;
[0024] Figure 5 It is the structure schematic view of the knob in the embodiment one of the utility model;
[0025] Figure 6 It is the structure schematic view of the knob and knob seat assembly in the embodiment one of the utility model;
[0026] Figure 7 It is the sectional view of the hand controller in the embodiment one of the utility model Figure 2 ;
[0027] Figure 8 It is the structure schematic view of the knob seat in the embodiment two of the utility model;
[0028] Figure 9 It is the sectional view of the hand controller in the embodiment three of the utility model;
[0029] Figure 10 It is the sectional view of the hand controller in the embodiment four of the utility model;
[0030] Figure 11 It is the structure schematic view of the electric lifting table in the embodiment six of the utility model.
[0031] Reference signs:
[0032] 100, knob seat; 110, reset track; 111, guide slope; 112, wave section; 120, base; 121, bottom wall; 122, side wall; 1221, convex rib; 123, shaft body; 130, second limiting part; 131, limiting column; 132, limiting convex rib; 140, decorative cover; 141, cover body; 142, coaming; 200, circuit board; 210, sensor; 220, elastic switch; 300, knob; 310, body; 311, limiting ring; 320, plate body; 321, center part; 3211, rotating shaft; 322, extension part; 323, limiting hole; 330, guide sleeve; 331, positioning rib; 340, elastic buckle; 400, ejection component; 500, elastic member;
[0033] 1, desktop panel; 2, lifting column.
DETAILED DESCRIPTION
[0034] The utility model provides a hand controller for electric adjustable furniture, including knob seat, circuit board and the knob that can rotate relative knob seat, one of knob seat and knob installs the circuit board, be equipped with the sensor of the electric signal according to the relative rotation of knob and knob seat on the circuit board, one of knob and knob seat is equipped with reset track, and the other is equipped with ejector and the elastic member for driving ejector and reset track to keep the adhesion, reset track includes guide slope, when the knob is driven to rotate to the predetermined operation direction by external force, ejector slides along guide slope and compresses elastic member, after releasing knob, elastic member releases and forces ejector to slide relative guide slope reset to drive knob reverse reset.
[0035] The hand controller in the utility model uses, after the knob is rotated to the predetermined operation direction by external force, ejector slides along guide slope and compresses elastic member, when the external force applied on the knob is cancelled, i.e. after releasing the knob, ejector slides relative guide slope reset under the action of elastic member to drive the knob reverse reset, thereby realizing self-reset function.
[0036] The technical scheme of the utility model embodiment is explained and described below in combination with the drawings of the utility model embodiment, but the following embodiment is only the preferred embodiment of the utility model, and is not all. Based on the embodiment in the embodiment, other embodiments obtained by the person skilled in the art without making creative labor all belong to the protection scope of the utility model. In addition, it is understood that the following "up", "down", "left", "right", "vertical", "horizontal", "internal", "external", "vertical", "horizontal", "top", "bottom" and other words indicating orientation or position relationship are only based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device / element must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as the limitation of the utility model.
[0037] Embodiment one
[0038] As Figures 1 to 7As shown, the electrically adjustable furniture hand controller in this embodiment includes a knob base 100, a circuit board 200, and a knob 300. The circuit board 200 is mounted on the knob base 100, while the knob 300 can rotate relative to the knob base 100. A sensor 210 is provided on the circuit board 200, and the rotation angle of the knob 300 relative to the knob base 100 can be converted into an electrical signal by the sensor 210. In this embodiment, the knob base 100 is provided with a reset rail 110, and the knob 300 is provided with an ejector component 400 and a mechanism for driving the ejector component 400 to engage with the reset rail 110. The elastic element 500 is kept in contact, wherein the reset track 110 includes a guide slope 111. When the knob 300 is rotated, the ejector 400 slides along the reset track 110 and moves in a direction parallel to the rotation axis O of the knob 300 under the action of the guide slope 111. When the knob 300 is driven by an external force to rotate in a predetermined operating direction, the ejector 400 slides along the guide slope 111 and compresses the elastic element 500. After the knob 300 is released, the elastic element 500 is released, forcing the ejector 400 to slide and reset relative to the guide slope 111 to drive the knob 300 to reverse and reset.
[0039] When the hand controller in this embodiment is in use, the knob 300 is rotated in the predetermined operating direction by an external force, that is, after the user rotates the knob 300, the ejector component 400 slides along the guide slope 111 to compress the elastic element 500 to deform and store energy. When the external force applied to the knob 300 is removed, that is, after the knob 300 is released, the ejector component 400 slides back to the guide slope 111 under the action of the elastic element 500 to drive the knob 300 to reverse and reset, thereby realizing the self-resetting function. Therefore, it can be seen that in this embodiment, the sliding friction between the ejector component 400 and the guide slope 111 replaces the sliding friction of the traditional torsion spring, which can reduce metal fatigue and wear, thereby extending the service life of the elastic element 500 and thus extending the service life of the hand controller. Secondly, due to the linear torque characteristics of the torsion spring, its adjustment space is limited, while in this embodiment, the slope height of the guide slope 111 can be adjusted according to different torque requirements, and the torque adjustment space is larger. Finally, when assembling the hand controller in this embodiment, since the knob seat 100 and the knob 300 are assembled along the rotation axis O, and the elastic element 500 undergoes expansion and contraction along a direction parallel to the rotation axis O, the initial pressure applied to the elastic element 500 to pre-deform it and generate on the ejector component 400 can be in the same direction as the force applied when the knob seat 100 and the knob 300 are assembled. That is, the pre-pressure deformation of the elastic element 500 can be achieved after the knob seat 100 and the knob 300 are assembled, thereby simplifying the assembly of the hand controller and reducing manufacturing costs.
[0040] Specifically, such as Figure 1 and Figure 3As shown, the knob base 100 in the embodiment includes a base 120 including a bottom wall 121 arranged perpendicularly to the rotation axis O of the knob 300 and a side wall 122 arranged around the bottom wall, the reset rail 110 is arranged on the side of the bottom wall 121 facing the knob 300, the reset rail 110 is an arc-shaped structure arranged around the rotation axis O, wherein the side of the side wall 122 facing the knob 300 is provided with a convex rib 1221, the knob 300 includes a body 310 rotatably sleeved outside the convex rib 1221 and a plate body 320 fixed inside the body 310, the ejecting part 400 is arranged between the plate body 320 and the reset rail 110, and the elastic member 500 is press-fitted between the plate body 320 and the ejecting part 400 to apply a pressing force to the ejecting part 400 in the direction of the reset rail 110, so that the ejecting part 400 is kept in close contact with the reset rail 110, the ejecting part 400 in the embodiment is a ball head ejector pin or a steel ball, preferably a ball head ejector pin, and the elastic member 500 can be a compression spring or a silica gel block or a rubber block, preferably a compression spring. In this way, after the knob 300 is rotated in a predetermined operation direction under the action of an external force, the ejecting part 400 slides along the guide slope 111 and also moves upward in a direction parallel to the rotation axis O, so that the elastic member 500 is compressed and deformed to store energy, and when the external force applied to the knob 300 is removed, i.e. the knob 300 is released, the ejecting part 400 slides downward relative to the guide slope 111 under the action of the elastic member 500 to drive the knob 300 to reverse and reset, thereby realizing the self-resetting function.
[0041] The ejecting part 400 in the embodiment is provided with a recess, one end of the elastic member 500 is arranged in the recess and abuts against the ejecting part 400, and the other end is connected with the plate body 320, so that the ejecting part 400 is kept in close contact with the reset rail 110 by the elastic member 500, the design of the recess improves the connection reliability of the elastic member 500 and the ejecting part 400, thereby avoiding the elastic member 500 and the ejecting part 400 from falling off and ensuring that the ejecting part 400 is always kept in close contact with the reset rail 110. In addition, since the end of the ejecting part 400 in contact with the reset rail 110 in the embodiment is ball-shaped, the ejecting part 400 can smoothly slide along the reset rail 110, so that rolling friction is formed between the two, thereby prolonging the service life of the ejecting part 400.
[0042] As Figure 3 and Figure 5As shown, in order to further ensure that the ejection component 400 and the reset track 110 always remain in close contact, the plate body 320 in the embodiment is provided with a guide sleeve 330 extending towards the reset track 110, the opposite sides of the guide sleeve 330 are provided with avoiding notches avoiding the reset track 110, the guide sleeve 330 is provided with a positioning rib 331, the other end of the elastic member 500 is sleeved on the positioning rib 331 and abuts against the plate body 320, in addition, the ejection component 400 is also slidingly arranged in the guide sleeve 330, in this way, the guide sleeve 330 can guide the extension and deformation of the elastic member 500 and the moving direction of the ejection component 400, so as to avoid the radial swing of the ejection component 400, thereby ensuring that the ejection component 400 always remains in close contact with the reset track 110.
[0043] Preferably, in the embodiment, at least two reset tracks 110 are circumferentially and uniformly spaced around the rotation axis O, preferably the number of reset tracks 110 is two, the two reset tracks 110 are symmetrically arranged about the rotation axis O, and the plate body 320 is arranged between the circuit board 200 and the bottom wall 121, which includes a central part 321 and extension parts 322 symmetrically arranged on both sides of the central part 321, the extension parts 322 are integrally machined and formed with the inner side wall of the body 310, and each extension part 322 is provided with an integrally formed guide sleeve 330, so that the ejection component 400 and the reset track 110 are one-to-one corresponding. In this way, the force balance of the knob 300 can be ensured, so as to ensure that the gap between the knob 300 and the knob seat 100 is circumferentially uniform, thereby optimizing the appearance of the hand controller after assembly.
[0044] In addition, the reset track 110 in the embodiment includes two guide slopes 111, the two guide slopes 111 are smoothly connected to form a V-shaped reset track, the opening of the V-shaped reset track faces the plate body 320, so that the guide slopes 111 gradually approach the plate body 320 in the direction away from the recess of the V-shaped reset track, in this way, when the knob 300 is rotated forward or reversely, the elastic member 500 can be compressed to deform and store energy, and after the knob is released, the knob 300 can be automatically reset, after the knob 300 is rotated and reset, the ejection component 400 is in close contact with the recess of the V-shaped reset track, different function triggers can be achieved by setting the forward rotation and reverse rotation of the knob 300, which can improve the control function diversity of the hand controller; in addition, the design of the V-shaped reset track also simplifies the structure of the reset track 110, which is beneficial to the machining and forming of the reset track 110.
[0045] In order to avoid that the knob 300 rotates excessively to cause the ejecting part 400 to be separated from the reset track 110, the knob 300 in the embodiment further comprises a first limiting part, the first limiting part comprises the plate body 320 and the limiting hole 323 arranged on the center part 321, and the base 120 is further provided with a second limiting part 130, the second limiting part 130 comprises the limiting column 131 and the limiting convex rib 132 arranged on the bottom wall 121, the number of the limiting column 131 is two and the limiting column 131 is symmetrically arranged about the rotation axis O, the single extension part 322 is defined between the two limiting columns 131, and the number of the limiting convex rib 132 is two and the limiting convex rib 132 is symmetrically arranged about the rotation axis O, wherein the limiting convex rib 132 is an arc-shaped rib arranged around the rotation axis O, the limiting hole 323 is an arc-shaped hole arranged around the rotation axis O, the limiting convex rib 132 is inserted with the limiting hole 323 and can slide relative to the limiting hole 323, so that the rotation angle of the first limiting part is limited by the second limiting part 130, thereby limiting the rotation angle of the knob 300, so as to avoid that the knob 300 rotates excessively to cause the ejecting part 400 to be separated from the reset track 110, thereby ensuring the normal use of the hand controller.
[0046] It can be understood that in other embodiments of the utility model, the limiting column and the limiting convex rib can be selectively arranged, so that the structure of the first limiting part and the second limiting part can be simplified to reduce the processing difficulty.
[0047] It should be noted that the sensor 210 in the embodiment is a rotary encoder or a potentiometer, the sensor 210 has an input shaft, the center part 321 of the knob 300 is provided with a rotating shaft 3211 connected with the input shaft and synchronously rotated, so as to realize that the rotation angle of the knob 300 is converted into an electric signal through the input shaft.
[0048] It can be understood that in other embodiments of the utility model, the sensor can also be a micro switch, two micro switches are arranged corresponding to the two end parts of the reset track respectively, the center part of the knob is provided with a first trigger part, the rotation of the knob drives the rotation of the first trigger part, so that the first trigger part triggers the corresponding micro switch and sends out the corresponding electric signal.
[0049] Finally, as Figure 1 and Figure 7As shown, the knob seat 100 in the embodiment further comprises a decorative cover 140, which is fixedly connected with the base 120 by screws to shield the circuit board 200, the circuit board 200 is fixed relative to the base 120 and the decorative cover 140 in both circumferential direction and axial direction, the inner side wall of the knob 300 further protrudes a limiting ring 311, the decorative cover 140 comprises a cover body 141 and a surrounding plate 142 protruding from the inner side of the cover body 141 and surrounding the outer side of the circuit board 200, the limiting ring 311 surrounds the outer side of the surrounding plate 142 and is limited by the cover body 141, so that the knob 300 can be rotatably sleeved outside the decorative cover 140 and be limited between the base 120 and the decorative cover 140. In this way, the decorative cover 140 and the base 120 can be used to limit the axial position of the knob 300 on the rotation axis O, without the need to set other structures, thereby simplifying the number of parts of the hand controller and further reducing the assembly difficulty of the hand controller.
[0050] It should be noted that, in order to ensure the smoothness of the rotation of the knob, a bearing can be arranged between the knob and the knob seat 100.
[0051] It can be understood that, in other embodiments of the utility model, the ejection part is a solid ball head ejector pin, an axial shoulder is arranged on the outer circumferential side of the ejection part, and the elastic member is sleeved outside the ejection part and abuts against the axial shoulder to drive the ejection part to keep abutting against the reset track. In this way, the connection reliability of the elastic member and the ejection part can also be improved, thereby avoiding the elastic member and the ejection part from falling off, and ensuring that the ejection part and the reset track always keep abutting.
[0052] It can be understood that, in other embodiments of the utility model, the ejection part and the elastic member are integrally formed as a rubber member.
[0053] It can be understood that, in other embodiments of the utility model, the reset track can also be arranged on the plate body of the knob, the reset track is a V-shaped reset track arranged with an opening facing the bottom wall, and the ejection part and the elastic member are arranged on the base, after the knob is reset, the ejection part abuts against the recess of the V-shaped reset track, and at this time, the guide sleeve is arranged on the base to guide the ejection part to float and the elastic member to deform.
[0054] It can be understood that, in other embodiments of the utility model, the circuit board can also be fixed on the base only by screws or fixed on the decorative cover only by screws.
[0055] Embodiment two
[0056] As Figure 8As shown, compared with Embodiment 1, the difference in this embodiment is that the reset track 110 includes two guide slopes 111 and a wave segment 112 located between the two guide slopes 111. After the knob 300 is rotated to reset, the ejector component 400 stops at the connection between the guide slope 111 and the wave segment 112. Rotating the knob 300 causes the ejector component 400 to stop at different troughs of the wave segment 112 to trigger different functions. With this design, the wave segment 112 forms a multi-segment tactile feel. When the knob 300 is rotated, under the action of the reset track 110 and the elastic element 500, the ejector component 400 can stop at different troughs, causing the knob 300 to stop at different positions. By forming different tactile feels, the sensor 210 identifies the different positions of the knob 300 to trigger different functions, increasing human-computer interaction.
[0057] Example 3
[0058] like Figure 9 As shown, compared to embodiments one and two, in this embodiment, the circuit board 200 and the decorative cover 140 are located on opposite sides of the bottom wall 121. The circuit board 200 is fixedly mounted on the base 120. The sensor 210 penetrates the bottom wall 121 and is connected to the center part 321 to achieve synchronous rotation. The circuit board 200 also has an elastic switch 220 located below the sensor 210. The knob 300 is floating between the decorative cover 140 and the base 120, and there is a floating gap H between the knob 300 and the end of the side wall 122. The knob 300 has a second trigger part that abuts against the elastic switch 220. In this embodiment, the sensor 210 forms the second trigger part. Pressing the knob 300 can reduce the floating gap H and cause the second trigger part to trigger the elastic switch 220. With this design, in addition to triggering the function by rotating the knob 300, the user can also trigger the elastic switch 220 by pressing the knob 300, thereby transmitting another electrical signal to confirm the corresponding function of the hand controller. The two operation methods do not interfere with each other, and can be rotated or pressed separately, or both can be pressed and rotated simultaneously.
[0059] Furthermore, the knob 300 is also provided with an elastic buckle 340, and the bottom wall 121 is provided with a snap-fit hole. The elastic buckle 340 passes through the snap-fit hole and snaps into the snap-fit hole. The elastic buckle 340 can float relative to the bottom wall 121, so that the knob 300 can float relative to the base 120. In normal condition, the snap-fit protrusion of the elastic buckle 340 abuts against the bottom wall 121. At this time, there is a floating gap H between the knob 300 and the end of the side wall 122. When the knob 300 is pressed, the snap-fit protrusion of the elastic buckle 340 moves away from the bottom wall 121 to reduce the floating gap H, and the knob 300 drives the second trigger part to trigger the elastic switch 220.
[0060] It can be understood that, in other embodiments of the utility model, if the sensor is a micro switch, then the second trigger part is a pressing protruding column arranged at the center part of the plate body.
[0061] Embodiment four
[0062] As shown in Figure 10 Compared with the first to third embodiments, the difference of the present embodiment is that the circuit board 200 is installed on the knob 300 and rotates synchronously with the knob 300, that is, the circuit board 200 is fixedly connected to the plate body 320 through screws, at this time, the bottom wall of the base 120 is provided with an upward extending shaft body 123, the shaft body 123 penetrates the plate body 320 and extends upward, and the sensor 210 is a rotary encoder or a potentiometer, the sensor 210 has an input shaft, the shaft body 123 is connected with the input shaft and rotates synchronously, so that when the knob 300 rotates, the relative rotation movement between the circuit board 200 and the base 120 is realized, and the rotation angle of the knob 300 is converted into an electric signal through the input shaft.
[0063] Preferably, the circuit board 200 is further provided with an elastic switch above the sensor 210, and the knob 300 is floatingly arranged between the decorative cover 140 and the base 120, and there is a floating gap H between the knob 300 and the end of the side wall 122. By pressing the knob 300, the floating gap H can be reduced and the elastic switch can be gradually close to the sensor, so that the sensor triggers the elastic switch. By such design, in addition to triggering the function by rotating the knob 300, the user can also trigger the elastic switch by pressing the knob 300 to transmit another electric signal to realize the confirmation of the corresponding function of the hand controller, and the two operation modes do not interfere with each other, and the rotation operation can be performed alone, the pressing operation can be performed alone, or the pressing operation and the rotation operation can be performed simultaneously.
[0064] It can be understood that, in other embodiments of the utility model, the sensor can also be a micro switch, two micro switches are arranged corresponding to the two ends of the reset track respectively, a third trigger part is arranged on the bottom wall of the base, and the rotation of the circuit board relative to the third trigger part driven by the knob can trigger the corresponding micro switch through the third trigger part and send a corresponding electric signal.
[0065] It can be understood that, in other embodiments of the utility model, the decorative cover can be rotatably installed on the base and integrally formed with the knob.
[0066] Embodiment five
[0067] Compared with Embodiments 1 and 2, the difference in this embodiment is that the ejector component in this embodiment is located on the knob and moves radially along the knob under the guidance of the guide slope. The corresponding elastic element extends and retracts radially along the knob. At this time, the reset track is located on the knob seat and includes two guide slopes. The two guide slopes are smoothly connected to form a V-shaped reset track. Both guide slopes gradually approach the rotation axis O radially from the recess of the V-shaped reset track. With this design, the knob can also achieve self-reset.
[0068] It is understood that in other embodiments of this utility model, the reset track is a V-shaped reset track provided on the knob, the opening of the V-shaped reset track is radially outward, the ejector component and the elastic element are both provided on the knob seat, the ejector component moves radially along the knob under the guidance of the guide slope, and the corresponding elastic element extends and retracts radially along the knob.
[0069] Example 6
[0070] like Figure 11 As shown, this embodiment also discloses an electrically adjustable furniture, which is an electrically adjustable table. The electrically adjustable table includes a desktop 1 and a lifting column 2 for supporting the desktop 1. The desktop 1 is equipped with a hand controller as described in any of the above embodiments. The hand controller is used to control the lifting column 2 to rise and fall. That is, the lifting column 2 can be controlled to rise and fall by rotating the knob 300 in both directions. Alternatively, the hand controller can be equipped with an up button and a down button, and the lifting column can be controlled to rise and fall by pressing the up button.
[0071] It is understood that in other embodiments of this utility model, the rotation of the knob can also control the menu to scroll up or down; when the knob has a pressing function, the corresponding instruction can also be set or confirmed by pressing the knob to trigger the elastic switch.
[0072] It should be noted that electrically adjustable furniture can also include electric sofas, electric beds, electric chairs, etc.
[0073] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A power adjustable furniture hand controller, comprising a knob base, a circuit board, and a knob rotatable relative to the knob base, wherein the circuit board is mounted on one of the knob base and the knob, and the circuit board is provided with a sensor that generates an electrical signal based on the relative rotation of the knob and the knob base, characterized in that, One of the knob and the knob base is provided with a reset track, the other is provided with an ejection component and an elastic member for driving the ejection component to keep in close contact with the reset track, the reset track comprises a guide slope, when the knob is driven to rotate in a predetermined operation direction by an external force, the ejection component slides along the guide slope and compresses the elastic member, after the knob is released, the elastic member releases and forces the ejection component to slide relative to the guide slope to reset the knob to reverse rotation.
2. The electrically adjustable furniture hand control of claim 1, wherein, At least two reset tracks are uniformly spaced around the rotation axis of the knob, and the ejection components are correspondingly arranged with the reset tracks.
3. The electrically adjustable furniture hand control of claim 1, wherein, The ejection component is provided with a recess cavity, one end of the elastic member is arranged in the recess cavity to drive the ejection component to keep in close contact with the reset track; or the outer circumferential side of the ejection component is provided with a shaft shoulder, and the elastic member is sleeved outside the ejection component and abuts against the shaft shoulder to drive the ejection component to keep in close contact with the reset track.
4. The electrically adjustable furniture hand control of claim 1, wherein, The reset track comprises two guide slopes, and the two guide slopes are connected to form a V-shaped reset track, and the ejection component is in close contact with the recess of the V-shaped reset track after the knob is reset.
5. The electrically adjustable furniture hand control of claim 1, wherein, The reset track comprises two guide slopes and a wave segment arranged between the two guide slopes, and the ejection component stays at the connection between the guide slope and the wave segment after the knob is reset, and the ejection component stays at different troughs of the wave segment to trigger different functions by rotating the knob.
6. The electrically adjustable furniture hand control of claim 1, wherein, The knob comprises a first limiting part, the knob base is provided with a second limiting part in sliding cooperation with the first limiting part, and the second limiting part is used to limit the rotation angle of the first limiting part to prevent the ejection component from being separated from the reset track.
7. The electrically adjustable furniture hand control of claim 1, wherein, The knob base or the knob provided with the ejection component and the elastic member is provided with a guide sleeve, and the ejection component and the elastic member are arranged in the guide sleeve.
8. The electrically adjustable furniture hand control of claim 1, wherein, The knob base comprises a base and a decorative cover fixed relative to the base, one of the knob and the base is provided with a reset track, and the knob is rotatably sleeved outside the decorative cover and is limited between the base and the decorative cover.
9. The electrically adjustable furniture hand control of claim 8, wherein, The circuit board is mounted on the knob base, the sensor is a rotary encoder or a potentiometer, the sensor has an input shaft, the knob is connected with the input shaft and rotates synchronously, or the sensor is a micro switch, and the knob is provided with a first trigger part for triggering the micro switch.
10. The electrically adjustable furniture hand control of claim 9, wherein, The ejection component moves in a direction parallel to the rotation axis of the knob when sliding along the guide slope, the knob is floatingly arranged between the decorative cover and the base, the circuit board and the decorative cover are arranged on opposite sides of the knob, the circuit board is further provided with an elastic switch, the knob has a second trigger part abutting against the elastic switch, and the second trigger part triggers the elastic switch by pressing the knob.
11. The electrically adjustable furniture hand control of claim 1, wherein, The circuit board is mounted on the knob, the sensor is a rotary encoder or a potentiometer, the sensor has an input shaft, the knob base is connected with the input shaft and rotates synchronously, or the sensor is a micro switch, and the knob is provided with a third trigger part for triggering the micro switch.
12. Electrically adjustable furniture, characterized in that The electric adjustable furniture is an electric lifting table, the electric lifting table comprises a table top plate and a lifting column for supporting the table top plate, the hand controller according to any one of claims 1 to 11 is installed on the table top plate, and the hand controller is used for controlling the lifting column to lift.