Knob mounting structure

Abstract

The utility model discloses a knob mounting structure, including control circuit board, installation box, panel, rotation connecting piece, support, display device, transparent sheet and rotation shell, control circuit board is located in the installation box, and the panel is fixed at the installation box top surface, and control circuit board is equipped with hollow rotary encoder, and rotation connecting piece bottom passes through the panel and installation box and is connected with the snap -lock of hollow rotary encoder, and the support is located in the hollow rotation connecting piece, and the support bottom passes through the snap -lock of hollow rotary encoder and control circuit board, and display device is fixed at the support top, and transparent sheet is located at the rotation shell top, and rotation connecting piece and rotation shell snap -lock connection and clamp the transparent sheet, and rotation connecting piece top is equipped with first wave tooth, and transparent sheet bottom is equipped with second wave tooth, and first wave tooth and second wave tooth are up and down tight. The utility model discloses can realize knob assembly from top to bottom, and simple and easy to install, and transparent sheet and rotation adapter reach blind dress and tight effect through wave tooth structure.

Description

Technical Field

[0001] This utility model relates to the field of knob technology, specifically to a knob mounting structure. Background Technology

[0002] Chinese patent CN209074236U discloses a cooking appliance and its knob assembly, which includes a rotary encoder, a rotatable rotating shell, and a fixed knob cover for touch control. The rotating shell includes an exposed annular wall for rotational operation. One end of the annular wall is connected to the encoder, so that rotation of the rotating shell can drive the encoder to rotate, realizing the selection and switching of the program to be run. The knob cover covers the other end of the annular wall. Within the area enclosed by the annular wall and the rotating shell, a component is provided for converting touch operation on the knob cover into a corresponding electrical signal. Utility Model Content

[0003] The purpose of this invention is to provide a knob mounting structure that differs from existing technologies.

[0004] The purpose of this utility model is achieved as follows.

[0005] A knob mounting structure includes a control circuit board, a mounting box, a panel, a rotating connector, a bracket, a display device, a transparent sheet, and a rotating shell. The control circuit board is located inside the mounting box, and the panel is fixed to the top surface of the mounting box. The control circuit board is equipped with a hollow rotary encoder. The bottom of the rotating connector passes through the panel and the mounting box and is snapped to the hollow rotary encoder. The bracket is located inside the hollow rotating connector, and the bottom of the bracket passes through the hollow rotary encoder and is snapped to the control circuit board. The display device is fixed to the top of the bracket and is electrically connected to the control circuit board through the hollow bracket. The transparent sheet is located on the top of the rotating shell, and the rotating connector and the rotating shell are snapped together, clamping the transparent sheet. The top of the rotating connector is provided with a first wave tooth, and the bottom of the transparent sheet is provided with a second wave tooth. The first wave tooth and the second wave tooth are tightly fitted together.

[0006] Furthermore, the top surface of the mounting box is provided with an annular wall, and a first clearance hole is formed inside the annular wall, connecting to the inner cavity of the mounting box. The hollow rotary encoder extends upward into the annular wall. The panel is provided with a second clearance hole, and the top of the annular wall extends through the second clearance hole to the top surface of the panel. A sliding groove with an open bottom is formed between the rotating shell and the rotating connector, and the top of the annular wall extends into the sliding groove. This utility model is used when placed horizontally, and the annular wall and the sliding groove cooperate to achieve a waterproof function.

[0007] Furthermore, the sliding groove and the annular wall do not come into contact. The rotating shell rotates easily and effortlessly.

[0008] Furthermore, the bracket has a positioning pin at its bottom, and the corresponding control circuit board has a positioning hole. The bracket also has at least one first elastic hook at its bottom, and the control circuit board has a cutout portion. The first elastic hook passes through the cutout portion and snaps into the bottom surface of the control circuit board. The bracket and control circuit board are simple and easy to install.

[0009] Furthermore, at least one first elastic hook is a first elastic hook portion, and the remaining first elastic hooks are second elastic hook portions. Corresponding hollow portions are provided with first and second buckle portions. The first elastic hook portions and first buckle portions are snapped together, and the second elastic hook portions and second buckle portions are snapped together. All the first elastic hooks are arranged in a circular pattern, and the positioning pins are provided between adjacent first elastic hooks. The distinction between the first and second elastic hook portions achieves a foolproof effect, ensuring the correct installation direction of the bracket.

[0010] Furthermore, the display device has a slot at its bottom, a positioning groove on one side of the slot, and a positioning block on the top side of the bracket. The positioning block is inserted into the positioning groove, allowing the display device to engage with the top of the bracket via the slot, thus sealing the top of the bracket. The display device is simple and easy to install; the positioning block and positioning groove work together to orient the display device, ensuring correct display performance.

[0011] Furthermore, the rotating connector is annular in shape, with annular first wave teeth on its top surface and several second elastic hooks on its outer circumference. The rotating shell is annular in shape, with a first groove on its inner circumference. The hooks of the second elastic hooks are engaged with the first groove, which is annular in shape. The rotating connector and rotating shell are simple and easy to install.

[0012] Furthermore, a first step is provided on the inner circumference of the top of the rotating shell, and a second step is provided on the outer circumference of the bottom of the transparent sheet. The transparent sheet is inserted into the rotating shell from the bottom, with the first and second steps abutting each other, and the top surface of the transparent sheet is flush with the top surface of the rotating shell. The rotating shell and the transparent sheet are easy to assemble, and the transparent sheet is firmly fixed.

[0013] Furthermore, the bottom surface of the transparent sheet has an upper recess, and the top of the display device extends into the upper recess. The bottom surface of the transparent sheet has annular second wave teeth around the upper recess. The upper recess helps to reduce the size of the knob.

[0014] Furthermore, the bottom of the rotary connector is provided with a third elastic hook and a locking protrusion facing inwards. The rotating part of the hollow rotary encoder is provided with a second groove and a slot. The locking protrusion is inserted into the slot, and the locking protrusion and the top surface of the rotating part are mutually restrained and abutted. The third elastic hook and the top of the second groove are snapped together. The rotary connector and the hollow rotary encoder are simple and easy to install. The rotary connector drives the rotating part to rotate through the locking protrusion, and the third elastic hook is not easily damaged.

[0015] This utility model allows for top-to-bottom knob assembly, making installation simple and easy. The transparent sheet and rotary adapter achieve blind installation and tight fit through a wave-tooth structure, facilitating the rotation of the shell to drive the hollow rotary encoder to rotate via the transparent sheet and rotary adapter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 (top view).

[0017] Figure 2 This is a structural schematic diagram of Embodiment 1 (view from below).

[0018] Figure 3 This is a top-down view of the exploded structure of Example 1.

[0019] Figure 4 This is a schematic diagram of the exploded structure of Example 1 (view from below).

[0020] Figure 5 This is a cross-sectional structural diagram of Example 1.

[0021] Figure 6 for Figure 5 Enlarged view of section A.

[0022] Figure 7 This is another cross-sectional structural diagram of Embodiment 1. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example 1, see Figure 1-7 As shown, a knob mounting structure includes a control circuit board 1, a mounting box 2, a panel 3, a rotating connector 4, a bracket 5, a display device 6, a transparent sheet 7, and a rotating shell 8.

[0025] A hollow rotary encoder 9 is mounted on the top of the control circuit board 1, and a hollow portion 10 is provided at the center of the hollow rotary encoder 9. The edge of the hollow portion 10 has a first latch 11 and two second latches 12. Positioning holes 13 are provided on the control circuit board 1 between adjacent first latches 11 and second latches 12, and between adjacent second latches 12. Three sets of second grooves 91 and slots 92 are provided on the outer periphery of the rotating part of the hollow rotary encoder 9. In this embodiment, the first latch 11 and the second latch 12 differ only in width.

[0026] The top surface of the mounting box 2 is provided with an annular wall 21, and a first clearance hole 22 is formed inside the annular wall 21 to communicate with the inner cavity of the mounting box 2. In this embodiment, the bottom surface of the mounting box 2 is open, and the panel 3 is a touch panel 3. The control circuit board 1 is located inside the mounting box 2 from the bottom, and the hollow rotary encoder 9 extends upward into the annular wall 21.

[0027] The panel 3 is provided with a second clearance hole 31 corresponding to the annular wall 21. The panel 3 is fixed (e.g., by adhesive layer) to the top surface of the mounting box 2. The top of the annular wall 21 extends through the second clearance hole 31 to the top surface of the panel 3.

[0028] The top surface of the rotary connector 4 is provided with an annular first wave tooth 40, and the outer periphery of the top of the rotary connector 4 is provided with several second elastic hooks 41. The bottom of the rotary connector 4 is provided with three sets of third elastic hooks 42 and latching protrusions 43 facing inward. The bottom of the rotary connector 4 passes through the second clearance hole 31 and the first clearance hole 22 and is snapped into the hollow rotary encoder 9. Specifically, the latching protrusions 43 are vertically inserted into the corresponding latching grooves 92, and the latching protrusions 43 and the top surface of the rotating part are mutually abutting. The corresponding third elastic hooks 42 and the top of the second grooves 91 are snapped into place. The latching protrusions 43 and the third elastic hooks 42 are fixed in the vertical direction with the hollow rotary encoder 9. The rotary connector 4 drives the rotating part to rotate, and the latching protrusions 43 and the latching grooves 92 are driven, reducing the torque borne by the third elastic hooks 42. The third elastic hooks 42 are not easy to break, and the rotary connector 4 and the hollow rotary encoder 9 have a long service life. In this embodiment, the rotating connector 4 is annular in shape. Specifically, the bottom of the rotating connector 4 is cylindrical and the top of the rotating connector 4 is flared.

[0029] The bottom of the bracket 5 is provided with three first elastic hooks 51, which pass through the hollow part 10 and snap together with the bottom surface of the control circuit board 1. One of the first elastic hooks 51 is a first elastic hook portion 52, and the other two are second elastic hook portions 53. All the first elastic hooks 51 are arranged in a circular pattern, and each adjacent first elastic hook 51 is provided with a positioning pin 55. In this embodiment, the first elastic hook portions 52 and the second elastic hook portions 53 differ only in width. During installation, the installation direction of the bracket 5 is determined by the first elastic hooks 52 and the second elastic hooks.

[0030] After passing through the second clearance hole 31 and the first clearance hole 22, the bottom of the bracket 5 is snapped into the control circuit board 1. Specifically, the first elastic hook 52 and the first buckle 11 are snapped together, the second elastic hook 53 and the second buckle 12 are snapped together, and the positioning pin 55 is inserted into the positioning hole 13, thereby realizing the directional installation of the bracket 5.

[0031] A positioning block 54 is provided on the top side of the bracket 5. A slot 61 is provided at the bottom of the display device 6, and a positioning groove 62 is provided on one side of the slot 61. The positioning block 54 is inserted into the positioning groove 62, allowing the display device 6 to engage with the top of the bracket 5 via the slot 61, thus sealing the top of the bracket 5. The bracket 5 and the display device 6 are oriented relative to the control circuit board 1 to ensure that the display device 6 is facing forward. In this embodiment, the display device 6 is a digital display tube. The bracket 5 is hollow, with a cylindrical bottom and a flared top. The display device 6 is electrically connected to the control circuit board 1 via wires passing through the interior of the bracket 5 and the hollow portion 10.

[0032] The bottom outer periphery of the transparent sheet 7 is provided with a second step 71, the bottom surface of the transparent sheet 7 is provided with an upper concave portion 72, and the bottom surface of the transparent sheet 7 is provided with an annular second wave tooth 70 around the upper concave portion 72.

[0033] The rotating shell 8 is annular in shape, with a first step 81 on the inner circumference of its top, and a first groove 82 below the first step 81 on the inner circumference of the rotating shell 8. In this embodiment, the first groove 82 is annular in shape and is made of aluminum alloy.

[0034] The transparent sheet 7 is inserted into the rotating shell 8 from the bottom, with the first step 81 and the second step 71 abutting against each other. The top surface of the transparent sheet 7 is flush with the top surface of the rotating shell 8, meaning the transparent sheet 7 is located at the top of the rotating shell 8. The top of the rotating connector 4 is inserted into the rotating shell 8, and the hook of the second elastic hook 41 is engaged with the first groove 82. The rotating connector 4 and the rotating shell 8 clamp the second step 71 of the transparent sheet 7, with the first wavy tooth 40 and the second wavy tooth 70 tightly fitted together. The rotating connector 4, the transparent sheet 7, and the rotating shell 8 are blindly assembled via the first wavy tooth 40 and the second wavy tooth 70. The rotation of the rotating shell 8 drives the rotation of the rotating connector 4 through the transparent sheet 7.

[0035] Meanwhile, the top of the display device 6 extends into the upper recess 72. Furthermore, a bottom-open sliding groove 80 is formed between the inner circumference of the rotating shell 8 and the lower part of the second elastic hook 41 on the outer side of the rotating connector 4. The top of the annular wall 21 extends into the sliding groove 80, and the sliding groove 80 and the annular wall 21 do not contact each other. Rotation of the rotating shell 8 will not generate friction with the annular wall 21. When the knob mounting structure of this invention is used horizontally, water is blocked by the annular wall 21 and will not drip from the first clearance hole 22 onto the control circuit board 1. Even if water drips from the second clearance hole 31 onto the mounting box 2, it is blocked by the mounting box 2, making it difficult for the water to contact the control circuit board 1, thus achieving a waterproof function.

[0036] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0037] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0038] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0039] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A knob mounting structure, comprising a control circuit board (1), characterized in that, It also includes a mounting box (2), a panel (3), a rotating connector (4), a bracket (5), a display device (6), a transparent sheet (7), and a rotating shell (8). The control circuit board (1) is located inside the mounting box (2), the panel (3) is fixed to the top surface of the mounting box (2), the control circuit board (1) is equipped with a hollow rotary encoder (9), the bottom of the rotating connector (4) passes through the panel (3) and the mounting box (2) and is snapped to the hollow rotary encoder (9), the bracket (5) is located inside the hollow rotating connector (4), and the bottom of the bracket (5) passes through the hollow rotary encoder (9) and is snapped to the hollow rotary encoder (9). The control circuit board (1) is snapped together, the display device (6) is fixed on the top of the bracket (5), the display device (6) is electrically connected to the control circuit board (1) through the hollow bracket (5), the transparent sheet (7) is located on the top of the rotating shell (8), the rotating connector (4) and the rotating shell (8) are snapped together, the rotating connector (4) and the rotating shell (8) clamp the transparent sheet (7), the top of the rotating connector (4) is provided with a first wave tooth (40), the bottom of the transparent sheet (7) is provided with a second wave tooth (70), the first wave tooth (40) and the second wave tooth (70) are closely fitted together.

2. The knob mounting structure according to claim 1, characterized in that, The top surface of the mounting box (2) is provided with an annular wall (21), and a first clearance hole (22) is formed inside the annular wall (21) to connect the inner cavity of the mounting box (2). The hollow rotary encoder (9) extends upward into the annular wall (21). The panel (3) is provided with a second clearance hole (31). The top of the annular wall (21) extends through the second clearance hole (31) to the top surface of the panel (3). A sliding groove (80) with an open bottom is formed between the rotating shell (8) and the rotating connector (4). The top of the annular wall (21) extends into the sliding groove (80).

3. The knob mounting structure according to claim 2, characterized in that, The sliding groove (80) and the annular wall (21) are not in contact.

4. The knob mounting structure according to claim 1, characterized in that, The bracket (5) has a positioning pin (55) at the bottom, and the corresponding control circuit board (1) has a positioning hole (13). The bracket (5) has at least one first elastic hook (51) at the bottom, and the control circuit board (1) has a hollow part (10). The first elastic hook (51) passes through the hollow part (10) and is snapped to the bottom surface of the control circuit board (1).

5. The knob mounting structure according to claim 4, characterized in that, At least one first elastic hook (51) is a first elastic hook part (52), and the remaining first elastic hooks (51) are second elastic hook parts (53). The corresponding hollow part (10) is provided with a first buckle part (11) and a second buckle part (12). The first elastic hook part (52) and the first buckle part (11) are snapped together, and the second elastic hook part (53) and the second buckle part (12) are snapped together. All the first elastic hooks (51) are arranged in a circular pattern, and the positioning pin (55) is provided between adjacent first elastic hooks (51).

6. The knob mounting structure according to claim 1, characterized in that, The display device (6) has a slot (61) at the bottom and a positioning groove (62) on one side of the slot (61). The bracket (5) has a positioning block (54) on the top side. The positioning block (54) is inserted into the positioning groove (62) so that the display device (6) is connected to the top of the bracket (5) through the slot (61) and the top of the bracket (5). The display device (6) seals the top of the bracket (5).

7. The knob mounting structure according to claim 1, characterized in that, The rotating connector (4) is annular in shape. The top surface of the rotating connector (4) is provided with the first wave tooth (40) in annular shape. The outer periphery of the top of the rotating connector (4) is provided with several second elastic hooks (41). The rotating shell (8) is annular in shape. The inner periphery of the rotating shell (8) is provided with the first groove (82). The hook part of the second elastic hook (41) is snapped together with the first groove (82). The first groove (82) is annular in shape.

8. The knob mounting structure according to claim 1, characterized in that, The rotating shell (8) has a first step (81) on the inner circumference of the top, and the transparent sheet (7) has a second step (71) on the outer circumference of the bottom. The transparent sheet (7) is inserted into the rotating shell (8) from the bottom. The first step (81) and the second step (71) abut against each other. The top surface of the transparent sheet (7) is flush with the top surface of the rotating shell (8).

9. The knob mounting structure according to claim 1, characterized in that, The bottom surface of the transparent sheet (7) is provided with an upper recess (72), the top of the display device (6) extends into the upper recess (72), and the bottom surface of the transparent sheet (7) is provided with an annular second wave tooth (70) around the upper recess (72).

10. The knob mounting structure according to claim 1, characterized in that, The bottom of the rotating connector (4) is provided with a third elastic hook (42) and a protrusion (43). The rotating part of the hollow rotary encoder (9) is provided with a second groove (91) and a slot (92). The protrusion (43) is inserted into the slot (92). The protrusion (43) and the top surface of the rotating part are mutually abutted. The third elastic hook (42) and the top of the second groove (91) are snapped together.

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