阅读说明：本技术 一种具有防水结构的旋钮换挡器 (Knob selector with waterproof construction ) 是由 许燕 文习斌 吴志 王进昌 马书林 于 2020-03-23 设计创作，主要内容包括：本申请涉及一种具有防水结构的旋钮换挡器,属汽车零部件技术领域,包括基座组件,其内部收容有电路板；操作组件,其包括至少部分收容于所述基座组件内的按键和可旋转地套设于所述按键顶端的套圈,所述按键可在垂直方向上相对所述套圈运动,所述按键与所述套圈之间具有安装间隙；套设于所述按键的旋转组件,所述旋转组件可相对于所述基座组件转动,其顶部设置第一环形槽,且所述第一环形槽位于所述安装间隙下方,所述第一环形槽底部至少设有一第一导流孔,且所述第一导流孔用于将所述第一环形槽内液体导离所述电路板。本申请具备良好的防水性能,消除了现有技术中给电路板涂覆防水漆或加设防水橡胶带来的成本增量和工艺装配风险。(The application relates to a knob gear shifter with a waterproof structure, which belongs to the technical field of automobile parts and comprises a base assembly, wherein a circuit board is accommodated in the base assembly; the operating assembly comprises a key at least partially accommodated in the base assembly and a ferrule rotatably sleeved at the top end of the key, the key can move relative to the ferrule in the vertical direction, and an installation gap is formed between the key and the ferrule; the cover is located the rotating assembly of button, rotating assembly can for base subassembly rotates, and its top sets up first ring channel, just first ring channel is located the installation clearance below, first ring channel bottom is equipped with a first water conservancy diversion hole at least, just first water conservancy diversion hole be used for with liquid is led away in the first ring channel the circuit board. The waterproof rubber has good waterproof performance, and cost increment and process assembly risks caused by coating waterproof paint or additionally arranging waterproof rubber on a circuit board in the prior art are eliminated.)

1. A knob shifter with a waterproof structure, comprising:

a base assembly (200) in which a circuit board (9) is housed;

the operating assembly (100) comprises a key (1) at least partially accommodated in the base assembly (200) and a ferrule (2) rotatably sleeved at the top end of the key (1), the key (1) can move relative to the ferrule (2) in the vertical direction, and a mounting gap (400) is formed between the key (1) and the ferrule (2);

the rotating component (300) of the key (1) is sleeved, the rotating component (300) can rotate relative to the base component (200), a first annular groove (101) is formed in the top of the rotating component, the first annular groove (101) is located below the mounting gap (400), at least one first flow guide hole (33) is formed in the bottom of the first annular groove (101), and the first flow guide hole (33) is used for guiding liquid in the first annular groove (101) away from the circuit board (9).

2. A knob shifter having a waterproof structure as claimed in claim 1, wherein: the key (1) comprises a key plate (11) positioned at the top end, the ferrule (2) comprises a ferrule body (22) and a hook part (21) extending inwards from the top of the ferrule body (22), the ferrule body (22) is fixedly sleeved on the rotating component (300), and the mounting gap (400) is formed between the end face of the side of the key plate (11) and the hook part (21); the mounting gap (400) and the first flow guiding hole (33) form a first water guiding channel for guiding liquid flowing down from the mounting gap (400) away from the circuit board (9).

3. A knob shifter having a waterproof structure as claimed in claim 2, wherein: a waterproof panel (4) is sleeved outside the rotating assembly (300), the waterproof panel (4) is provided with a downward slope surface for blocking external liquid, and a sleeved gap (401) is formed between the waterproof panel (4) and the rotating assembly (300);

the rotating assembly (300) is provided with a flow guide flanging (53) extending outwards in the radial direction, and the flow guide flanging (53) is positioned below the sleeving gap (401); the sleeving gap (401) and the flow guide flanging (53) form a second water guide channel, and the second water guide channel is used for discharging external liquid penetrating into the sleeving gap (401) from the slope surface away from the circuit board (9).

4. A knob shifter having a waterproof structure as claimed in claim 3, wherein: the waterproof panel (4) is positioned below the first diversion hole (33), and the sleeving gap (401) is positioned on the inner side of the first diversion hole (33); the slope surface is used for guiding liquid flowing down from the first guide hole (33) outwards, and the second water guide channel is also used for discharging the liquid flowing into the sleeving gap (401) from the first guide hole (33) away from the circuit board (9).

5. A knob shifter having a waterproof structure as claimed in claim 2, 3 or 4, wherein: the base component (200) comprises a body shell (7) with a downward opening, an internal cavity of the body shell (7) is used for accommodating the circuit board (9), and the body shell (7) is provided with a central tube body (75) which extends upwards and is used for accommodating the key (1); the rotating assembly (300) can rotate around the central tube body (7);

the central pipe body (75) is circumferentially provided with a second annular groove (201) which is downward concave and has an upward opening, the top surface of the body shell (7) is provided with a waterproof edge (72) for blocking liquid, and the waterproof edge (72) is annularly arranged on the outer edge of the second annular groove (201); and a certain separation gap (402) is formed between the top end surface of the waterproof edge (72) and the lower surface of the diversion flanging (53).

6. A knob shifter having a waterproof structure as claimed in claim 5, wherein: a second flow guide hole (73) is formed in the bottom of the second annular groove (201); base component (200) still contain water conservancy diversion support (8), water conservancy diversion support (8) are fixed in the inside cavity of body shell (7) just is located second water conservancy diversion hole (73) below, water conservancy diversion support (8) contain honeycomb duct (81) with equal figure and the vertical setting of second water conservancy diversion hole (73), honeycomb duct (81) align one by one in second water conservancy diversion hole (73), honeycomb duct (81) are used for running through horizontally circuit board (9), waterproof limit (72) second water conservancy diversion hole (73) with honeycomb duct (81) form third water guide channel, third water guide channel is used for will cutting off the liquid water conservancy diversion that clearance (402) infiltration entered body shell (7) and arrive circuit board (9) below.

7. A knob shifter having a waterproof structure as claimed in claim 6, wherein: a bearing groove (750) is formed in the top end of the central pipe body (75), a waterproof bearing (6) is installed in the bearing groove (750), and the rotating assembly (300) is rotatably connected to the central pipe body (75) through the waterproof bearing (6); the bearing is characterized in that a plug buckle for plugging the waterproof bearing (6) is arranged above the bearing groove (750), and a bearing inner ring (62) of the bearing (6) is limited in the bearing groove (750) by the plug buckle.

8. A knob shifter having a waterproof structure as claimed in claim 7, wherein: the rotating assembly (300) comprises a knob inner ring (3) and a connecting ring (5), the knob inner ring (3) faces upwards, the connecting ring (5) is clamped and fixed on the knob inner ring (3), the first annular groove (101) is located at the top of the knob inner ring (3), and the flow guide flanging (53) is located at the bottom of the connecting ring (5); the inner wall of the connecting ring (5) is annularly provided with a fixed edge (51), and the upper direction and the lower direction of a bearing outer ring (61) of the waterproof bearing (6) are clamped between the fixed edge (51) and the lower end face of the inner wall of the connecting ring (5).

9. A knob shifter having a waterproof structure as claimed in claim 8, wherein: the first flow guide holes (33) are arc-shaped strips, more than one first flow guide holes (33) are uniformly distributed at equal angles by taking the axis of the knob inner ring (3) as a central shaft, and the sum of the areas of all the first flow guide holes (33) is larger than the area of the mounting gap (400).

10. A knob shifter having a waterproof structure according to any one of claims 6 to 9, wherein: the base component (200) further comprises a base (10), the base (110) is a rectangular shell with an upward opening and is arranged at the bottom of the body shell (7); and a drainage hole for draining water is formed in the rectangular shell corresponding to the position right below the guide pipe (81).

Technical Field

The application relates to the technical field of automobile parts, in particular to a knob selector with a waterproof structure.

Background

With the development of new energy vehicle types and intelligent driving technologies, electronic shifters are more and more seen in the sight of people, and the head corners of the electronic shifters are exposed in medium-high vehicle types. The knob electronic gear shifter is novel in operation and attractive in style, and greatly meets the requirements of consumers on exquisite appearance and rich technological sense of the gear shifting mechanism, so that the knob electronic gear shifter can be rapidly developed. The knob electronic gear shifter (hereinafter referred to as knob gear shifter) realizes the change of driving gears through the rotation of a knob and realizes the P-gear parking through a key. The knob gear shifter is often arranged in a place which is convenient for a person to operate in the middle of the auxiliary instrument panel, and a storage space for water or beverage is generally arranged on the auxiliary instrument panel, so that the risk that the gear shifter is splashed with water is greatly increased. After the knob gear shifter is used as an electronic product, after water enters, the circuit heating amount and the power consumption of the whole vehicle are increased if the knob gear shifter is light, and the whole vehicle is broken down if the knob gear shifter is failed to shift if the knob gear shifter is heavy, so that the water resistance is an important subject of the knob gear shifter.

Disclosure of Invention

The embodiment of the application provides a knob selector with waterproof construction, does not influence the working property of knob selector, possesses good waterproof performance, has eliminated among the prior art for the circuit board coating waterproof paint or add cost increment and the technological assembly risk of establishing waterproof rubber and bringing.

The application provides a knob selector with waterproof construction, its characterized in that includes: a base assembly having a circuit board accommodated therein;

the operating assembly comprises a key at least partially accommodated in the base assembly and a ferrule rotatably sleeved at the top end of the key, the key can move relative to the ferrule in the vertical direction, and an installation gap is formed between the key and the ferrule;

the cover is located the rotating assembly of button, rotating assembly can for base subassembly rotates, and its top sets up first ring channel, just first ring channel is located the installation clearance below, first ring channel bottom is equipped with a first water conservancy diversion hole at least, just first water conservancy diversion hole be used for with liquid is led away in the first ring channel the circuit board.

In some embodiments, the key includes a key board at a top end, the collar includes a collar body and a hook portion extending inward from a top of the collar body, the collar body is fixedly sleeved on the rotating assembly, and the mounting gap is formed between a side end surface of the key board and the hook portion; the mounting gap and the first flow guide hole form a first water guide channel, and the first water guide channel is used for guiding liquid flowing down from the mounting gap away from the circuit board.

In some embodiments, the rotating assembly is sleeved with a waterproof panel, the waterproof panel is provided with a slope surface which faces downwards and is used for blocking external liquid, and a sleeved gap is formed between the waterproof panel and the rotating assembly;

the rotating assembly is provided with a flow guide flanging extending outwards in the radial direction, and the flow guide flanging is positioned below the sleeving gap; the sleeving gap and the flow guide flanging form a second water guide channel, and the second water guide channel is used for discharging external liquid penetrating into the sleeving gap from the slope surface away from the circuit board.

In some embodiments, the waterproof panel is located below the first diversion hole, and the sheathing gap is located inside the first diversion hole; the slope surface is used for guiding liquid flowing down from the first flow guide hole outwards, and the second water guide channel is also used for discharging the liquid flowing into the sleeving gap from the first flow guide hole away from the circuit board.

In some embodiments, the base assembly comprises a downwardly open body housing having an interior cavity for receiving the circuit board, the body housing being configured with a central tube extending upwardly and for receiving a key; the rotating assembly can rotate around the central pipe body;

the central pipe body is circumferentially provided with a second annular groove which is downward concave and has an upward opening, the top surface of the body shell is provided with a waterproof edge for blocking liquid, and the waterproof edge is circumferentially arranged on the outer edge of the second annular groove; and a certain separation gap is formed between the top end surface of the waterproof edge and the lower surface of the diversion flanging.

In some embodiments, the bottom of the second annular groove is provided with a second flow guide hole; the base subassembly still contains the water conservancy diversion support, the water conservancy diversion support is fixed in the inside cavity of body shell just is located second water conservancy diversion hole below, the water conservancy diversion support contains the honeycomb duct that just is vertical setting with the equal figure in second water conservancy diversion hole, the honeycomb duct align one by one in second water conservancy diversion hole, the honeycomb duct is used for running through the horizontally circuit board, waterproof limit second water conservancy diversion hole with the honeycomb duct forms the third water guide passageway, the third water guide passageway is used for will cutting off the liquid water conservancy diversion that the clearance infiltration entered body shell to arrive from the wall the circuit board below.

In some embodiments, a bearing groove is formed at the top end of the central tube body, the bearing groove is provided with a waterproof bearing, and the rotating assembly is rotatably connected to the central tube body through the waterproof bearing; the bearing groove is provided with a plug buckle for plugging the waterproof bearing, and the inner ring of the bearing is limited in the bearing groove by the plug buckle.

In some embodiments, the rotating assembly includes a knob inner ring and a connecting ring, the knob inner ring faces upward, the connecting ring is clamped and fixed to the knob inner ring, the first annular groove is located at the top of the knob inner ring, and the flow guide flange is located at the bottom of the connecting ring; the inner wall of the connecting ring is annularly provided with a fixed edge, and the outer ring of the waterproof bearing is clamped between the fixed edge and the lower end face of the inner wall of the connecting ring in the vertical direction.

In some embodiments, the first flow guiding holes are arc-shaped strips, more than one first flow guiding holes are uniformly distributed at equal angles by taking the axis of the knob inner ring as a central axis, and the sum of the areas of all the first flow guiding holes is larger than the area of the mounting gap.

In some embodiments, the base assembly further comprises a base in the form of an upwardly open rectangular housing mounted to the bottom of the body shell; and a drainage hole for draining water is formed in the rectangular shell corresponding to the position right below the flow guide pipe.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a knob gear shifter with a waterproof structure, and as a rotating assembly is provided with more than one first flow guide hole, liquid flowing down from an installation gap between a key and a ferrule is discharged from a circuit board; therefore, the knob gear shifter leads the liquid out through the first flow guide hole at the bottom of the first annular groove, so that the liquid is prevented from contacting the circuit board, the aim of water resistance is fulfilled, and the knob gear shifter has good water resistance; compared with the prior art, the waterproof rubber sealing device eliminates cost increment and process assembly risk caused by waterproof paint coating or waterproof rubber adding of the circuit board, further avoids the heating problem caused by sealing of the waterproof rubber on the circuit board, and prolongs the service life of the knob shifter.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded view of a knob shifter provided in an embodiment of the present application;

fig. 2 is a sectional view of a knob shifter provided in an embodiment of the present application;

FIG. 3 is an assembled cross-sectional view of a key, an operating assembly and a rotating assembly provided in an embodiment of the present application;

fig. 4 is a schematic view of a key structure provided in the embodiment of the present application;

FIG. 5 is a top view of an inner ring of a knob provided in accordance with an embodiment of the present application;

FIG. 6 is a bottom view of FIG. 5;

FIG. 7 is a schematic view of a rotary assembly provided in accordance with an embodiment of the present application;

FIG. 8 is an assembly view of a rotation assembly and a base assembly provided by an embodiment of the present application;

FIG. 9 is a schematic view of a waterproof bearing provided by an embodiment of the present application;

fig. 10 is a schematic structural diagram of a body casing according to an embodiment of the present application;

fig. 11 is a schematic view of a structure of a guide bracket according to an embodiment of the present disclosure;

fig. 12 is an assembly view of the body housing and the guide bracket according to the embodiment of the present disclosure;

fig. 13 is an assembly diagram of the guide bracket, the circuit board, and the base according to the embodiment of the present disclosure.

Reference numerals:

1-key, 11-key board, 12-guide ring, 13-guide rib, 2-ferrule, 21-hook, 3-knob inner ring, 31-first buckle, 32-big outer ring, 33-first guide hole, 34-partition board, 35-inner ring, 36-small outer ring, 4-waterproof panel, 41-connecting column, 5-connecting ring, 51-fixed edge, 52-second buckle, 53-guide flanging, 6-waterproof bearing, 61-bearing outer ring, 62-bearing inner ring, 63-ball, 7-body shell, 71-guide edge, 72-waterproof edge, 73-second guide hole, 74-ear, 750-bearing groove, 75-central tube, 8-guide bracket, 81-guide pipe, 82-positioning pin, 83-positioning screw, 9-circuit board, 91-matching hole, 10-base, 100-operation component, 101-first annular groove, 200-base component, 201-second annular groove, 300-rotation component, 400-installation gap, 401-sleeving gap and 402-separation gap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a knob selector with waterproof construction, and it is waterproof through the water conservancy diversion, has eliminated among the prior art for circuit board coating waterproof paint or add cost increment and the technological assembly risk of establishing waterproof rubber and bringing.

As shown in fig. 1, 2, 3 and 8, a knob shifter with a waterproof structure can guide externally splashed liquid (finger water and various liquids) away from a circuit board 9 through more than one water guide channels, so as to achieve the waterproof purpose. The knob shifter includes a base assembly 200, an operating assembly 100 and a rotation assembly 300. The base assembly 200 accommodates a circuit board 9 therein; the operating assembly 100 comprises a key 1 and a collar 2, wherein the key 1 is at least partially accommodated in the base assembly 200, and the collar 2 is rotatably sleeved on the top end of the key 1. The key 1 can move relative to the ferrule 2 in the vertical direction, and a mounting gap 400 is arranged between the key 1 and the ferrule 2, and the mounting gap 400 is used for facilitating the relative movement between the key 1 and the ferrule 2.

The rotary component 300 is sleeved on the key 1, the rotary component 300 can rotate relative to the base component 200, the top of the rotary component 300 is provided with a first annular groove 101, the first annular groove 101 is located below the mounting gap 400, the bottom of the first annular groove 101 is provided with at least one first flow guiding hole 33, and the first flow guiding hole 33 is used for guiding liquid in the first annular groove 101 away from the circuit board 9. During the actual use of the knob shifter, the liquid splashed from the outside flowing into the knob shifter from the mounting gap 400 is collected in the first annular groove 101 and then led out from the first guide hole 33 at the bottom of the first annular groove 101.

Specifically, the key 1 includes a key sheet 11 located at the top end and a key main body located below the key sheet 11. The ferrule 2 includes a ferrule body 22 and a hook 21 extending inward from the top of the ferrule body 22, the ferrule body 22 is fixedly sleeved on the rotation member 300, and when the user twists the ferrule 2, the ferrule 2 drives the rotation member 300 to rotate relative to the base member 200. The inner end surface of the hook 21 is adjacent to the key sheet 11, and a mounting gap 400 is formed between the end surface of the key sheet 11 on the side and the hook 21. The mounting gap 400 and the first guide holes 33 form a first water guide passage for guiding the external splash liquid flowing down from the mounting gap 400 away from the circuit board 9. The knob shifter leads out liquid through the first flow guide hole, avoids liquid contacting the circuit board, achieves the waterproof purpose, and has good waterproof performance.

Furthermore, the waterproof panel 4 is sleeved outside the rotating assembly 300, the waterproof panel 4 has a downward slope, the slope is equivalent to a knob shifter umbrella, and is used for blocking liquid splashed from the outside and guiding away the liquid splashed from the outside, and a sleeving gap 401 is formed between the waterproof panel 4 and the rotating assembly 300.

As shown in fig. 2 and 8, the rotating assembly 300 is provided with a flow guiding flange 53 extending radially outwards, the flow guiding flange 53 is located below the sleeving gap 401, the sleeving gap 401 and the flow guiding flange 53 form a second water guiding channel, and the second water guiding channel is used for discharging external liquid penetrating into the sleeving gap 401 from a slope surface away from the circuit board 9.

Further, the waterproof panel 4 is located below the first diversion hole 33, and the sheathing gap 401 is located inside the first diversion hole 33; the slope surface is used for guiding the liquid flowing from the first diversion hole 33 outwards, and the second water guide channel is also used for discharging the liquid flowing from the first diversion hole 33 into the sleeving gap 401 away from the circuit board 9. The second water guide channel further improves the waterproof performance on the basis of the first water guide channel.

As shown in fig. 8, the base assembly 200 includes a body casing 7 opened downward, the circuit board 9 is horizontally installed in an inner cavity of the body casing 7, the body casing 7 is provided with a central tube 75 extending upward and used for accommodating the key 1, the central tube 75 is communicated with the inner cavity of the body casing 7, and the key body of the key 1 is inserted into the central tube 75 and can move up and down along the central tube 75. The rotary assembly 300 is rotatable about the central tube 7.

The central tube 75 is circumferentially provided with a second annular groove 201 which is concave downwards and has an upward opening, the top surface of the body shell 7 is provided with a waterproof edge 72 for blocking liquid, and the waterproof edge 72 is circumferentially arranged at the outer side edge of the second annular groove 201; the waterproof edge 72 is used for blocking the liquid on the top surface of the body casing 7 from flowing into the second annular groove 201. A certain separation gap 402 is formed between the top end face of the waterproof edge 72 and the lower surface of the diversion flange 53, and the separation gap 402 enables the waterproof edge 72 to separate liquid and not to interfere the relative rotation of the rotating assembly 300 and the body shell 7 when the rotating assembly 300 rotates.

Further, the bottom of the second annular groove 201 is provided with a second diversion hole 73. The base assembly 200 further includes a guide bracket 8, and the guide bracket 8 is fixed to the inner cavity of the body housing 7 and located below the second guide hole 73. The guide support 8 includes guide pipes 81 vertically disposed in the same number as the second guide holes 73, the guide pipes 81 are aligned to the second guide holes 73 one by one, the guide pipes 81 penetrate through the horizontal circuit board 9, the waterproof edge 72, the second guide holes 73, and the guide pipes 81 form a third water guide channel, and the third water guide channel is used for guiding liquid penetrating into the body case 7 from the partition gap 402 to the lower side of the circuit board 9. Specifically, the circuit board 9 is provided with a fitting hole 91 for the duct 81 to pass through. The third water-proof passage independently exists and conducts away the liquid which permeates from the space between the waterproof panel 4 and the body shell 7 and passes through the partition gap 402; and further conducts away the liquid which accidentally penetrates into the partition gap 402 through the second water guide passage.

Preferably, the top end of the central tube 75 is provided with a bearing groove 750, the bearing groove 750 is provided with a waterproof bearing 6 (see fig. 9), and the rotating assembly 300 is rotatably connected to the central tube 75 through the waterproof bearing 6; when the user rotates the collar 2, the collar 2 rotates the rotation assembly 300 around the central tube 75 through the waterproof bearing 6.

As shown in fig. 10, an inserting buckle for inserting the waterproof bearing 6 is disposed above the bearing groove 750, and the inserting buckle facilitates assembly of the bearing groove 750 and is also used for sealing and limiting the bearing inner ring 62 of the bearing 6 in the bearing groove 750.

As shown in fig. 3 and 7, the rotary assembly 300 includes a knob inner ring 3 and a connecting ring 5, the knob inner ring 3 faces upward, and the connecting ring 5 faces downward. The connecting ring 5 is clamped and fixed on the knob inner ring 3, the first annular groove 101 is positioned at the top of the knob inner ring 3, and the flow guide flanging 53 is positioned at the bottom of the connecting ring 5. The inner wall of the connecting ring 5 is annularly provided with a fixed edge 51, and the bearing outer ring 61 of the waterproof bearing 6 is clamped between the fixed edge 51 and the lower end face of the inner wall of the connecting ring 5 in the vertical direction. The bearing outer ring 61 and the bearing inner ring 62 of the waterproof bearing 6 are sealed and fixed, and the bearing outer ring 61 and the bearing inner ring 62 are sealed and connected in a rolling manner through balls 63.

As shown in fig. 3, 5 and 6, the knob inner ring 3 comprises an inner ring 35, a small outer ring 36, a large outer ring 32 and a partition plate 34, wherein the partition plate 34 is vertically and annularly arranged outside the inner ring 35 and divides the inner ring 35 into an upper part and a lower part; the upper part of the inner ring 35, the partition plate 34 and the big outer ring 32 enclose to form a first annular groove 101; the lower part of the inner ring 35 and the small outer ring 36 clamp and fixedly connect the top of the ring 5, and the first diversion hole 33 is arranged on a separation plate 34 between the small outer ring and the big outer ring.

Preferably, a plurality of first buckles 31 are further arranged outside the large outer ring 32 of the knob inner ring 3, and mounting grooves matched with the first buckles 31 one by one are formed in the inner side of the ferrule body 22, so that the knob gear shifter is convenient to assemble.

As shown in fig. 7, a plurality of second fasteners 52 are disposed on the top of the connecting ring 5, and the second fasteners 52 are matched with a plurality of insertion holes formed in the small outer ring 36 for easy assembly and disassembly.

As shown in fig. 5, preferably, the first guiding holes 33 are arc-shaped, the first guiding holes 33 are uniformly distributed at equal angles with the axis of the inner ring 3 of the knob as a central axis, and the sum of the areas of all the first guiding holes 33 is greater than the area of the installation gap 400, when liquid is splashed, the maximum input of the installation gap 400 is smaller than the maximum output of the first guiding holes 33, so that the liquid can be rapidly guided out.

As shown in fig. 2, 8 and 13, the base assembly 200 further includes a base 10, the base 110 is a rectangular shell with an upward opening and is mounted at the bottom of the body casing 7; the rectangular housing is provided with drainage holes for draining water, which discharge water or other liquid to a designated position, directly below the flow guide pipe 81.

As shown in fig. 2, four connection posts 41 are provided on the lower surface of the waterproof panel 4 facing downward. Body shell 7 is square casing, and the four corners of square casing still is provided with the ear 74 that corresponds from top to bottom with spliced pole 41, and ear 74 has further strengthened the holistic stability of knob selector in spliced pole 41 through screw fixed connection in spliced pole 41.

The peripheral edge of the top surface of the square shell is provided with a flow guide edge 71, the left side and the right side of the flow guide edge 71 are provided with water outlets, and water in the second water guide channel is discharged to the top surface of the body shell 7 along the flow guide flanging 53 and then discharged outwards through the water outlets.

Preferably, the height of the guiding edge 71 is smaller than that of the waterproof edge 72, so as to prevent water from overflowing the waterproof edge 72.

As shown in fig. 3 and 4, the flow guide ring 12 is additionally arranged on the lower surface of the key board 11, the flow guide ring 12 is located between the end surface of the key board 11 and the inner ring 35 of the knob inner ring 3, and the flow guide ring 12 prevents liquid penetrating from the installation gap (400) from entering the central tube 75, so that better flow guide and waterproof effects are achieved.

As shown in fig. 4 and 10, the key 1 further has a plurality of vertical guide ribs 13, and the central tube 75 is correspondingly provided with guide grooves matching with the guide ribs 13 one by one, so as to provide a guiding function for the up-and-down movement of the key 1 and prevent the key 1 from rotating unnecessarily.

In the present embodiment, as shown in fig. 11, 12 and 13, the guide bracket 8 is positioned to the body casing 7 by the positioning pin 82, and is fixed to the body casing 7 by the positioning screw 83; offer the hole of stepping down that supplies the button 1 lower extreme to pass on the water conservancy diversion support 8, honeycomb duct 81's top end face is contradicted in second annular groove 201 bottom lower surface, and the liquid that flows down from second water conservancy diversion hole 73 directly flows into honeycomb duct 81, prevents that the liquid of evaporation from overflowing scattered, reaches better water-proof effects.

The waterproof principle of the knob gear shifter is as follows:

when the accident happens, when having liquid to splash to the knob selector, the knob selector is led away from the knob selector with liquid through three water guide channel, protects inside circuit board 9, specifically as follows:

when liquid seeps into the knob shifter from the mounting gap 400, the first water guide channel functions, and the liquid firstly flows to the first annular groove 101 and then is guided outwards through the more than one first guide hole 33.

When liquid permeates into the sleeving gap 401 from the slope surface of the waterproof panel 4 or flows out of the first guide hole 33 to the sleeving gap 401, the second water guide channel plays a role, and the liquid flows to the top surface of the body shell 7 from the sleeving gap 401 through the guide flange 53 and is discharged outside through the water discharge port of the guide edge 71.

When liquid permeates into the gap between the waterproof panel 4 and the body casing 7 and passes through the partition gap 402, or when the liquid on the top surface of the body casing 7 overflows and scatters through the partition gap 402 due to evaporation, the third water guide channel functions, and the liquid flows into the flow guide pipe 81 from the second flow guide hole 73 of the second annular groove 201 and then flows into the flow guide hole of the base to be discharged outside.

The three water guide channels of the knob gear shifter independently exist and are interdependent, each water guide channel can guide liquid outwards, and the three water guide channels exist simultaneously, so that the knob gear shifter has excellent waterproof performance, and when an accident occurs and liquid is splashed to the knob gear shifter, the three water guide channels can guide the liquid away from the circuit board 9. Compared with the prior art, the waterproof rubber sealing device eliminates cost increment and process assembly risk caused by waterproof paint coating or waterproof rubber adding of the circuit board, further avoids the heating problem caused by sealing of the waterproof rubber on the circuit board, and prolongs the service life of the knob shifter.

Meanwhile, the waterproof performance of the waterproof bearing 6 is further improved, the inner ring of the waterproof bearing 6 is arranged in the bearing groove 750, the outer ring 61 of the waterproof bearing 6 is clamped between the fixing edge 51 and the lower end face of the inner wall of the connecting ring 5 in the vertical direction, the tight installation and the waterproof performance of the waterproof bearing prevent water evaporated in the third water guide channel from overflowing into the central tube body 75, the circuit board 9 below the central tube body 75 is protected, and a better waterproof effect is achieved.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.