CN219476037U - Control knob structure - Google Patents

Abstract

The utility model provides a control knob structure, which comprises an encoder, a knob support and a knob fixing seat, wherein a PCBA plate electrically connected with the encoder is arranged on the knob support, the encoder comprises an encoder body and a rotary ferrule which is sleeved on the encoder body and can rotate relative to the encoder body, the control knob structure also comprises a lower support and a shell, the lower support comprises a first connecting end fixedly connected with the rotary ferrule and a second connecting end fixedly connected with the shell in an adapting way, the lower support and the shell are enclosed into a containing cavity, and the encoder body, the knob support, the PCBA plate and the knob fixing seat are arranged in the containing cavity, and the shell, the lower support and the rotary ferrule can synchronously rotate relative to the encoder body. The beneficial effects of the utility model are as follows: the product performance is improved, the overall stability is better, the material requirement on the shell is greatly reduced, and the product cost is effectively reduced.

Description

Control knob structure

Technical Field

The utility model relates to an electric appliance controller structure, in particular to a control knob structure.

Background

In order to adjust working parameters of electric appliances such as light, washing machines, refrigerators and the like, knobs are basically arranged, and the purpose of stepless adjustment is achieved through the knobs.

The knob is applied to each field, and for current button regulation, the operation is more convenient, more humanized. The existing adjusting knob is shown in fig. 1 and 2, and the installation mode is as follows:

(1) The knob fixing seat 1 is inserted into the middle part of the encoder 8, and then the encoder 8 is welded on the lower surface of the PCBA board 6;

(2) The knob support 5 is inserted through the front surface of the shell 3, then the PCBA plate 6 is positioned on the lower surface of the knob support through a screw, wherein a limiting structure is arranged on the side wall of the shell 3, and the limiting structure of the shell is clamped between the knob support 5 and the PCBA plate 6 to limit, so that the relative position limiting connection of the three is realized, and the shell can rotate relative to the knob support 5 and the PCBA plate 6;

(3) The light guide support 2 is sleeved on the outer side of the encoder 8 and fixed, and meanwhile, a circle of convex ribs are arranged at the top of the light guide support 2 and matched with the inner wall of the shell 3 to limit the peripheral installation position of the shell 3.

And finally, the whole assembly is completed.

When the shell 3 is rotated in the prior art, when the shell 3 drives the lower bracket to rotate with the outer ring of the encoder, the tolerance requirements of the lower bracket, the knob bracket 5 and the PCBA board 6 are high, and the lower bracket contacts friction.

The prior art structure has the following defects:

1. when the front of the knob is seen, gaps exist between the shell 3 and the knob support 5, if the gaps are too large, the appearance is affected, dust is easy to enter, and excessive dust is accumulated, so that the problem of spin jamming is caused; if the gap between the housing 3 and the knob support 5 is too small, friction is caused during rotation, so that the process requirement on the housing is very high, for example, a high-gloss wear-resistant hardware material is selected, so that the cost of a product is increased, in addition, the knob support 5 is generally made of plastic, in the use process, the knob support 5 can fall off slag due to friction with the housing 3 of the hardware, and the fallen slag is blocked inside the knob, so that the knob is blocked.

2. Because the limit structure of the shell 3 is clamped between the knob bracket 5 and the PCBA plate 6 for fixation, the gap between the knob bracket 5 and the PCBA plate 6 determines the up-and-down shaking amplitude of the knob. In addition, as can be seen from fig. 2, the knob support 5 and the PCBA board 6 are both in contact with the housing 3, and friction is inevitably caused during rotation, and at this time, the wear-resisting requirements on the contact surfaces of the three components are high, and the precision requirements of materials are high.

3. Because the upper end medial surface of knob support 5 and the lower part side of transparent apron 4 are the outward appearance face of contact, and the gap between them is less, appears the card and dies, and not good assembly, and the gap is too big is not pleasing to the eye and rocks.

4. Because the encoder 8 is welded on the PCBA plate 6, and the lower end of the light guide support 2 is sleeved on the encoder 8, because the position of the shell is fixed, the welding requirement on the encoder 8 is very high, the encoder 8 needs to be strictly coaxial with the shell 3, if the encoder 8 is welded and inclined, the installation of the light guide support 2 coaxially installed with the encoder 8 is inclined, so that the situation that the light guide support 2 is not concentric with the shell 3 occurs, and when the light guide support 2 is not concentric with the shell, the upper end face of the light guide support 2 cannot be parallel to the lower section of the shell, thereby causing installation defects, and the problem that a knob is rotated to a certain angle to be blocked is also caused.

Disclosure of Invention

The utility model provides a control knob structure for solving the problems of high assembly requirement, easy abrasion and high cost in the prior art.

The rotary encoder comprises an encoder body, a rotary knob support and a rotary knob fixing seat, wherein the rotary knob support is provided with a PCBA plate electrically connected with the encoder, the encoder comprises an encoder body and a rotary ferrule which is sleeved on the encoder body and can rotate relative to the encoder body, the rotary encoder also comprises a lower support and a shell, the lower support comprises a first connecting end fixedly connected with the rotary ferrule and a second connecting end fixedly connected with the shell in an adapting way, the lower support and the shell are enclosed into a containing cavity, the encoder body, the rotary knob support, the PCBA plate and the rotary knob fixing seat are arranged in the containing cavity, and the shell, the lower support and the rotary ferrule can synchronously rotate relative to the encoder body.

The utility model further improves, also comprises a display screen connected with the PCBA board, wherein a window is arranged at the top of the shell, and the display screen is fixedly arranged on the window.

The utility model further provides another improvement, and the utility model further comprises a display screen connected with the PCBA board, wherein a window is arranged at the top of the shell, the display screen is fixedly arranged at the top of the knob support and corresponds to the window, and the window is provided with a sealed transparent cover plate.

According to the utility model, a mounting groove matched with the display screen is formed in the top of the knob support, and the display screen is fixed in the mounting groove; the periphery of the top of the shell is provided with a circle of step surface lower than the plane of the top of the shell, and the periphery of the transparent cover plate is fixed on the step surface.

The utility model further improves the light source arranged in the accommodating cavity, the lower bracket is a light guide bracket, and light emitted by the light source can penetrate through the light guide bracket.

The utility model is further improved, and the light source is a lamp bead attached to the PCBA board.

According to the utility model, the light source is a lamp panel electrically connected with the PCBA board, more than one lamp bead is arranged on the lamp panel, and an installation space matched with the lamp panel is arranged on one surface of the lower support, which is close to the PCBA board.

According to the utility model, the lower bracket is further provided with a circle of light guide grooves, and the lamp beads are uniformly embedded into the light guide grooves.

According to the utility model, a limit step is arranged on the inner wall of the first connecting end of the lower bracket, a stop block for limiting the longitudinal position of the lower bracket relative to the rotary ferrule is arranged at the position corresponding to the limit step, the stop block is matched with the limit step, and a buckle matched and fixed with the outer wall of the rotary ferrule is arranged on the inner wall of the first connecting end.

According to the utility model, a key is arranged on one surface of the PCBA, which is close to the knob fixing seat, a pressing part corresponding to the key is arranged on the knob fixing seat, a first longitudinal sliding structure is matched with the inner wall of the encoder body and the outer wall of the knob fixing seat, when the shell is pressed, the lower bracket drives the encoder to move downwards, and the key can be matched with the pressing part to realize a key function.

Compared with the prior art, the utility model has the beneficial effects that:

1. the shell 3 is not contacted with the knob support 5, but is arranged in the accommodating cavity enclosed by the shell 3 and the lower support 2, so that the appearance is effectively improved, the tightness is better, the shell and the knob support are not interfered with each other, the blocking phenomenon caused by dust entering or abrasion phenomenon can not occur, the material requirement on the shell is greatly reduced, and the product cost is effectively reduced;

2. the mounting requirement on the encoder is greatly reduced, the encoder and the PCBA board are not required to be strictly concentric, and the PCBA board is arranged in the accommodating cavity and is not contacted with the shell, but the shell is fixed on the lower bracket, when the encoder is slightly inclined, the shell and the lower bracket can be adjusted along with the mounting, and at the moment, although the PCBA board is not parallel to the upper surface of the shell, the PCBA board is not contacted with the upper surface of the shell, so that friction phenomenon is not caused, and the assembly efficiency and the yield of products are improved;

3. because the encoder body, the PCBA board and the like do not rotate, and the shell, the lower bracket and the rotary ferrule can synchronously rotate relative to the encoder body, the integral stability of the utility model is better when the encoder is operated, the problem that the existing structure is easy to shake up and down and left and right is avoided, and the product performance is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a cross-sectional view of FIGS. 1 A-A;

FIG. 3 is a schematic diagram of the structure of the present utility model;

FIG. 4 is a cross-sectional view of one embodiment B-B of FIG. 3;

FIG. 5 is an exploded view of one embodiment;

FIGS. 6 and 7 are schematic views of exploded construction of the encoder and knob housing without key function;

FIG. 8 is a schematic diagram of the functional structure of the encoder and knob holder with keys;

fig. 9 is a cross-sectional view of another embodiment B-B of fig. 3.

Detailed Description

The utility model will be described in further detail with reference to the drawings and examples.

As shown in fig. 3-9, the utility model comprises an encoder 8, wherein the encoder 8 comprises an encoder body 804, a rotary ferrule 803 sleeved on the encoder body 804 and capable of rotating relative to the encoder body 804, a knob fixing seat 1 arranged in the encoder body 804, a knob bracket 5, and a PCBA plate 6 electrically connected with the encoder 8 arranged on the back of the knob bracket 5.

The knob control structure of this example still includes lower carriage 9 and shell 3, lower carriage 9 include with the rotatory lasso 803 outer wall fixed connection of encoder 8 first link and with the second link of shell 3 adaptation fixed connection, lower carriage 9 encloses with shell 3 and closes into one and hold the chamber, encoder body 804, knob support 5, PCBA board 6 and knob fixing base 1 set up hold the intracavity, shell 3, lower carriage 9 and rotatory lasso 803 can be relative encoder body 804 synchronous revolution, in addition, hold the chamber bottom and establish an opening, the bottom protrusion of knob fixing base 1 hold the chamber opening setting for fixing knob control structure.

According to the utility model, the shell 3 is fixed on the lower bracket 9, and the PCBA plate 6 is arranged in the accommodating cavity and is not contacted with the shell 3, so that when the encoder 8 is welded and slightly inclined relative to the PCBA plate, the shell 3 and the lower bracket 9 can be adjusted along with the installation, and at the moment, although the PCBA plate is not parallel to the upper surface of the shell, the PCBA plate and the upper surface of the shell are not contacted, and friction phenomenon is not caused, so that the encoder 8 is installed without being strictly concentric with the PCBA plate, the installation requirement on the encoder is greatly reduced, and the assembly efficiency and the yield of products are effectively improved.

Because the encoder body, the PCBA board and the like do not rotate, and the shell, the lower bracket and the rotary ferrule can synchronously rotate relative to the encoder body, the integral stability of the utility model is better when the encoder is operated, the problem that the existing structure is easy to shake up and down and left and right is avoided, and the product performance is improved.

In addition, compared with the prior art, the shell 3 is not contacted with the knob support 5 and the PCBA board, but is arranged in the accommodating cavity enclosed by the shell 3 and the lower support 2, so that the appearance is effectively improved, the sealing performance is better, the shell and the knob support are not interfered, the blocking phenomenon caused by dust entering or abrasion phenomenon can not occur, the material requirement on the shell is greatly reduced, and the product cost is effectively reduced.

As a preferred embodiment of the present utility model, the present embodiment further includes a display screen 10 connected to the PCBA board 6, a window is provided on the top of the housing 3, the display screen 10 is fixedly disposed on the top of the knob support 5, and corresponds to the window, and the window is provided with a sealed transparent cover plate 4.

The top of the knob bracket 5 is provided with a mounting groove matched with the display screen 10, and the display screen 10 is fixed in the mounting groove; the periphery of the top of the shell 3 is provided with a circle of step surface 301 lower than the plane of the top of the shell, and the periphery of the transparent cover plate 4 is fixed on the step surface 301.

Of course, as another embodiment of the present utility model, the display screen 10 of this embodiment may also be directly disposed on the window on the top of the housing 3. The display effect of the present utility model can be similarly achieved.

As can be seen by comparing fig. 1 and fig. 3, in this example, the knob support 5 is disposed in the accommodating cavity, and the display screen is not disposed on the knob support 5 or on the window of the housing, so that the structure of this example is more compact, the outer edge of the display screen 10 is narrower, the effect is better, and miniaturization of the product is facilitated.

Preferably, the present embodiment further includes a light source disposed in the accommodating cavity, the lower bracket 9 is a light guiding bracket, and light emitted by the light source can pass through the light guiding bracket.

As shown in fig. 4, the light source in this example may be a lamp bead directly attached to the PCBA board 6. Therefore, two circuit boards in the prior art are integrated into one circuit board, the structure of the lower bracket 9 is optimized, and the cost is lower.

As shown in fig. 9, as another embodiment of the present utility model, the present embodiment is also compatible with a lamp panel 7 in the prior art, the lamp panel 7 is provided with more than one lamp bead 701, a mounting space adapted to the lamp panel 7 is provided on a surface of the lower support 9, which is close to the PCBA panel 6, the lower support 9 is further provided with a circle of light guide grooves 905, the lamp beads 701 are uniformly embedded into the light guide grooves 905, and in this embodiment, the lamp beads 701 are embedded into the light guide grooves 905 by optimizing the structure, so that the structure is more compact and the lighting effect is better.

As shown in fig. 4-9, in order to limit the position of the lower bracket 9 and ensure the installation consistency, in this example, a limit step 903 is provided on the inner wall of the first connection end of the lower bracket 9, a stop block for limiting the longitudinal position of the lower bracket 9 relative to the encoder is provided at a position corresponding to the position of the limit step 903 on the rotary ferrule 804 of the encoder 8, and the stop block is adapted to the limit step 903. The stop block in this example may also be a groove designed for material reduction on the outer wall of the rotary ferrule 804 of the encoder 8, and correspondingly, the limit step is a raised step embedded into the groove. The inner wall of the first connecting end of this example is provided with a buckle 904 that is matched and fixed with the outer wall of the rotary ferrule 804 of the encoder 8, and is clamped and fixed with the buckling position 801 of the outer wall of the rotary ferrule 804 of the encoder 8.

The second link of this example is close to the one side of knob support 5 be equipped with the enclose fender portion 901 of the round adaptation of shell 3 inner wall, to the accurate spacing of mounted position of shell 3. In addition, the enclosure part 901 is provided with a plurality of second buckles 902 which are fixedly clamped with the inner wall of the shell 3.

The enclosing part 901 of this example is a plurality of arc sections that evenly set up, the second buckle 902 sets up between the tip 901 of two sections enclosing parts.

As shown in fig. 6 to 8, the control knob structure of this example includes a structure supporting key operation for realizing operations of opening or closing the device, adjusting the control device, etc., and a structure not supporting key operation for adjusting the control parameters by rotating the encoder when the device to be operated is opened.

As shown in fig. 8, the PCBA board 6 of this example is close to the middle part of one side of the knob fixing base 1 is provided with a key, the knob fixing base 1 is provided with a pressing portion 103 corresponding to the key, the inner wall of the encoder body 804 and the outer wall of the knob fixing base 1 are of a first longitudinal sliding structure, when the casing 3 is pressed, the lower bracket 9 drives the encoder 8 to move downwards, so as to drive the PCBA board 6 to move towards the direction of the knob fixing base 1, and the key can be matched with the pressing portion 103 to realize a key function.

When the key is released, the key rebounds to drive the PCBA 6 to move upwards for resetting, and the encoder 8 moves upwards for resetting along with the key rebound to drive the whole control knob structure to move upwards relative to the knob fixing seat 1, so that the utility model is restored to the original key-pressing-free state.

As an embodiment of the present utility model, the outer sidewall of the knob fixing seat 1 in this embodiment is further uniformly provided with a plurality of longitudinally distributed protruding strips 101, and the inner surface of the encoder body 804 is provided with second grooves 8041 corresponding to the protruding strips 101, so that the encoder body 804 is engaged with the outer wall of the knob fixing seat 1 and cannot rotate along with the rotation of the rotating outer ring 803.

In addition, the first longitudinal sliding structure of this example includes more than one sliding block 102 disposed on the outer wall of the knob fixing seat 1, and more than 1 sliding ways 8042 longitudinally disposed on the inner wall of the encoder body 804 and adapted to the sliding blocks 102, and a bone position limiting the travel of the sliding blocks 102 is further disposed at the bottom of the sliding ways 8042, so that the encoder body 804 can move up and down relative to the knob fixing seat 1.

The motion matching relationship between the encoder body 804 and the rotary collar 803 of the encoder 8 of this example is the same as that of the prior art, and will not be described here again.

As shown in fig. 6 and 7, when the key function is not supported, a circle of abutting ring abutting against the PCBA board 6 is arranged on the periphery of the pressing part 103 for supporting the PCBA board 6, and the height of the abutting ring is higher than the pressing height of the PCBA board 6, so that the key on the PCBA board is prevented from being pressed down by contacting with the pressing part 103.

Of course, in this example, no key may be provided, and the key may be provided to satisfy compatibility of the PCBA board 6. The abutment ring may also be replaced by other limiting structures such as support posts and the like.

Compared with the prior art, when the product is operated, only the housing with strong accommodation rotates, and the internal device cannot rotate along with the housing, so that the product is more stable in operation and better in overall stability, the technical problem that the installation mode in the prior art can shake up and down and left and right is solved, the product performance is good, and the user experience is better; in addition, the utility model has more compact structure, greatly reduces the material requirements on the structures such as the shell, the lower bracket and the like, effectively reduces the product cost, is not only suitable for electric appliances with knob adjustment such as lamplight, air conditioner, washing machine, electric cooker, refrigerator and the like, but also suitable for intelligent central control and other equipment, and has wide application field and strong adaptability.

The above embodiments are preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, which includes but is not limited to the embodiments, and equivalent modifications according to the present utility model are within the scope of the present utility model.

Claims (10)

1. The utility model provides a control knob structure, includes encoder, knob support, knob fixing base, be equipped with on the knob support with the PCBA board that the encoder electricity is connected, the encoder includes that encoder body and cover are established on the encoder body, can be relative the rotatory lasso of encoder body, its characterized in that: still include lower carriage and shell, the lower carriage include with rotatory lasso fixed connection's first link and with shell adaptation fixed connection's second link, the lower carriage encloses with the shell and closes into one and hold the chamber, encoder body, knob support, PCBA board and knob fixing base set up hold the intracavity, shell, lower carriage and rotatory lasso can be relative the synchronous rotation of encoder body.

2. The control knob structure according to claim 1, wherein: the PCBA board is characterized by further comprising a display screen connected with the PCBA board, a window is arranged at the top of the shell, and the display screen is fixedly arranged on the window.

3. The control knob structure according to claim 1, wherein: the display screen is fixedly arranged at the top of the knob support and corresponds to the window, and the window is provided with a sealed transparent cover plate.

4. The control knob structure of claim 3 wherein: the top of the knob bracket is provided with a mounting groove matched with the display screen, and the display screen is fixed in the mounting groove; the periphery of the top of the shell is provided with a circle of step surface lower than the plane of the top of the shell, and the periphery of the transparent cover plate is fixed on the step surface.

5. The control knob structure according to any one of claims 1-4, wherein: the light source is arranged in the accommodating cavity, the lower support is a light guide support, and light emitted by the light source can penetrate through the light guide support.

6. The control knob structure according to claim 5, wherein: the light source is a lamp bead attached to the PCBA board.

7. The control knob structure according to claim 5, wherein: the light source be with the lamp plate that PCBA board electricity is connected, be equipped with more than one lamp pearl on the lamp plate, the lower carriage be close to one side of PCBA board be equipped with the installation space of lamp plate adaptation.

8. The control knob structure according to claim 7, wherein: the lower support is also provided with a circle of light guide grooves, and the lamp beads are uniformly embedded into the light guide grooves.

9. The control knob structure according to any one of claims 1-4, wherein: the first connecting end inner wall of the lower bracket is provided with a limiting step, a stop block for limiting the longitudinal position of the lower bracket relative to the rotary ferrule is arranged at the position corresponding to the limiting step, the stop block is matched with the limiting step, and the first connecting end inner wall is provided with a buckle matched and fixed with the outer wall of the rotary ferrule.

10. The control knob structure according to any one of claims 1-4, wherein: the PCBA board is close to the one side of knob fixing base is equipped with the button, be equipped with on the knob fixing base with the pressing part that the button corresponds, encoder body inner wall with knob fixing base outer wall complex first longitudinal sliding structure, when pressing the shell, the lower carriage drives the encoder downstream, the button can with pressing part cooperation realizes the button function.