A knob structure

Abstract

The utility model provides a kind of knob structure, including knob core and the knob cover of being set to the knob core outside, the knob core with the knob cover buckle connection, the knob core includes boss, the boss is equipped with the hook piece, the inner circumferential wall of the knob cover is equipped with the concave ring that is adapted to the hook piece;The side of the boss away from the hook piece is equipped with rib, set rib as reinforcing rib to improve the bending strength of boss, keep the rigidity of hook piece structure, when knob cover is pressed down, rib resists the elastic deformation of hook piece, limit its inner deformation, ensure that buckle connection is kept in the locking state in concave ring, effectively prevent knob core and knob cover from separating.

Description

Technical Field

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

[0002] In devices such as car audio systems, knobs are commonly used adjustment components. Traditional knobs are usually made of plastic, and the surface treatment is mostly spray painting or electroplating. However, after long-term use, problems such as paint wear and peeling, and electroplating blistering are prone to occur, affecting the appearance and service life.

[0003] Meanwhile, traditional knobs have some shortcomings in their structural design. For example, the outer cover and the knob core are prone to detach when subjected to downward pressure or torsional force, affecting the normal use and reliability of the knob. In addition, existing plastic knobs are generally designed with an interference fit between the "D" shaped hole on the knob and the "D" shaped shaft on the button. Over time, the plastic "D" shaped hole will age and crack, causing the knob to loosen. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] This utility model provides a knob structure that aims to solve the problems of the outer cover easily detaching from the knob core and the interference fit causing the "D" shaped hole to age and crack.

[0006] (2) Technical solution

[0007] This utility model provides a knob structure, including a knob core and a knob cover sleeved on the outside of the knob core. The knob core and the knob cover are snap-fitted together. The knob core includes a boss and a hook is provided on the boss. The inner peripheral wall of the knob cover is provided with a concave ring adapted to the hook.

[0008] The boss has ribs on the side opposite to the hook.

[0009] Furthermore, the protrusion is also provided with a guide post, and the inner peripheral wall of the knob cover is provided with a guide groove that is adapted to the guide post.

[0010] Furthermore, the boss includes a first connector and a second connector, the hook is disposed on the first connector, the guide post is disposed on the second connector, and the rib is disposed on the back of the hook on the first connector.

[0011] Furthermore, a gap is provided between the first connector and the second connector.

[0012] Furthermore, the guide post is provided in three parts.

[0013] Furthermore, the knob cover is hollow inside, and a plurality of anti-slip strips are provided on the outer peripheral wall of the knob cover, the anti-slip strips being spaced apart circumferentially.

[0014] Furthermore, the knob cover is made of aluminum, produced through a drawing process.

[0015] Furthermore, the surface of the knob cover is provided with a colored coating.

[0016] Furthermore, it also includes a button, the button comprising a D-shaped shaft, the knob core having a connector, the connector having a D-shaped hole adapted to the D-shaped shaft, the D-shaped shaft and the D-shaped hole being interference-fitted.

[0017] Furthermore, the connector is also provided with two U-shaped grooves.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The knob core has a hook on its protrusion that engages with the recessed ring on the inner wall of the knob cover for quick assembly. Ribs are provided on the side of the protrusion away from the hook to enhance its bending strength and maintain the rigidity of the hook structure. When the knob cover is pressed down, the ribs resist the elastic deformation of the hook, limiting its internal deformation and ensuring the latch remains locked within the recessed ring. This effectively prevents the knob core from detaching from the knob cover, and even if the user accidentally presses the knob cover, the hook will not retract or disengage.

[0020] 2. The connector is also provided with a U-shaped groove. When the D-shaped hole is inserted into the D-shaped shaft, it will open appropriately to clamp the D-shaped shaft, ensuring that the button and the knob core are tightly connected and do not fall off, thus extending the service life of the connector and solving the problem that the knob core and the button may separate due to long-term interference fit between the D-shaped shaft and the D-shaped hole. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is an exploded view of the entire utility model.

[0023] Figure 3 This is a schematic diagram of the knob core of this utility model.

[0024] Figure 4 This is a schematic diagram of the knob cover of this utility model.

[0025] Figure 5 This is a sectional view of the side of the knob core and knob cover after they are connected.

[0026] Figure 6 This is a front sectional view of the knob core and knob cover of this utility model after they are connected.

[0027] Figure 7 This is a front sectional view of the connector of this utility model.

[0028] Figure 8 This is a schematic diagram showing the connection between the button and the knob core of this utility model.

[0029] Figure 9 This is an exploded view of the button and knob core and knob cover of this utility model.

[0030] Figure 10 This is a schematic diagram of the button structure of this utility model.

[0031] Figure 11 This is a front sectional view of the connection between the button and the knob core of this utility model.

[0032] Figure 12 This is a side sectional view of the connection between the button and the knob core of this utility model.

[0033] Reference numerals: 1-Knob core, 11-Boss, 111-Connector 1, 112-Connector 2, 113-Gap, 12-Rib, 13-Hook, 14-Guide post, 15-Plug-in, 151-D-shaped hole, 152-U-shaped groove, 16-Bottom cover, 17-Protrusion, 2-Knob cover, 21-Concave ring, 22-Guide groove, 23-Anti-slip strip, 24-Bevel, 25-Concave platform, 3-Button, 31-D-shaped shaft. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0035] like Figure 1-12 As shown, this utility model provides a knob structure, including a knob core 1 and a knob cover 2 sleeved on the outside of the knob core 1. The knob core 1 and the knob cover 2 are snapped together. The knob core 1 includes a boss 11 and a bottom cover 16. The boss 11 and the bottom cover 16 are integrally formed. The boss 11 is provided with a hook 13. The inner peripheral wall of the knob cover 2 is provided with a concave ring 21 adapted to the hook 13.

[0036] During assembly, such as Figure 2-6As shown, the knob core 1 has a protrusion 17, and the knob cover 2 has a recess 25 that corresponds to the protrusion 17. During assembly, when the knob core 1 is inserted into the knob cover 2, the protrusion 17 engages with the recess 25, and the hook 13 engages with the recessed ring 21, achieving a double engagement. This ensures that the knob core 1 and the knob cover 2 are axially limited and prevented from detaching. When the protrusion 17 and the recess 25 are in contact, the top of the knob core 1 is flush with the top of the inclined edge 24 of the knob cover 2, enabling quick assembly. After pressing the knob core 1 into the knob cover 2, when the knob cover 2 is pressed down, the hook 13 of the knob core 1 deforms inward under force, causing the hook 13 to engage with the recessed ring 21. To prevent accidental separation of the knob core 1 from the knob cover 2, a rib 12 is provided on the back side of the boss 11 away from the hook member 13. The rib 12 acts as a reinforcing rib, significantly improving the bending strength of the boss 11 and maintaining the structural rigidity of the hook member 13. When the knob cover 2 is subjected to downward pressure, the rib 12 resists the elastic deformation of the hook member 13, limiting its inward deformation and ensuring that the buckle remains locked under axial pressure when connected in the concave ring 21. By providing the rib 12, the rib 12 forms a support on the back of the hook member, so that even if the user accidentally presses the knob cover 2, the hook member 13 will not retract and fall out.

[0037] Preferably, in this embodiment, the cross-section of the rib 12 is trapezoidal, but the rib 12 can also be triangular to maximize the support effect of the rib 12.

[0038] Furthermore, the knob cover 2 also includes a beveled edge 24, which has an aesthetic function and can be polished to enhance visual impact.

[0039] Specifically, such as Figure 3-7 As shown, the boss 11 is also provided with a guide post 14, and the inner peripheral wall of the knob cover 2 is provided with a guide groove 22 that is adapted to the guide post 14. In use, the guide post 14 of the knob core 1 is aligned with the guide groove 22 and then the knob core 1 is pressed into the knob cover 2. The guide post 14 and the guide groove 22 facilitate the precise alignment and insertion of the knob core 1 into the knob cover 2, which is convenient for the operator to assemble and improves the assembly accuracy and efficiency. At the same time, the guide post 14 is embedded in the guide groove 22 to form an anti-torsion structure, which prevents the knob core 1 and the knob cover 2 from rotating relative to each other during use. While achieving the guiding function, it also limits the movement of the knob core 1 and the knob cover 2. This design, together with the rib 12, forms a dual protection system of axial anti-dislodgement and circumferential anti-torsion, so that the knob can still maintain the structural integrity in complex scenarios.

[0040] Furthermore, such as Figure 6 As shown, the boss 11 includes a first connector 111 and a second connector 112. A hook 13 is disposed on the first connector 111, and a guide post 14 is disposed on the second connector 112. A rib 12 is disposed on the back side of the hook 13 on the first connector 111. A gap 113 is provided between the first connector 111 and the second connector 112. When the hook 13 is pressed and undergoes inward deformation, the gap 113 allows the first connector 111 to bend slightly independently, preventing the deformation force from being transmitted to the second connector 111. 2. To protect the precise fit between the guide post 14 and the guide groove 22 from interference, this application avoids the situation where the guide post 14 and the hook 13 are set together in the traditional one-piece boss 11. When the hook 13 is pressed and deformed, the entire boss 11 is deformed, which in turn causes the guide post 14 to shift. This application adopts a separate boss 11 design with connector 111 and connector 212, so that the buckling area deforms independently, avoiding interference with the guide post 14 and the situation of reduced positioning accuracy, and maintaining a stable state where the buckle does not come off and the guide does not deviate.

[0041] Furthermore, three guide posts 14 are provided, and the three guide posts 14 are symmetrically distributed on the side wall of the boss 11 of the connector 2 112 at a 120° axis. All abnormal degrees of freedom are eliminated by statically indeterminate constraints, so that the knob cover 2 and the knob core 1 form a metal-like rigid connection.

[0042] Specifically, such as Figure 4 As shown, the knob cover 2 is hollow inside, and a plurality of anti-slip strips 23 are provided on the outer peripheral wall of the knob cover 2. The anti-slip strips 23 are spaced apart circumferentially. By setting the anti-slip strips 23, the contact surface is increased, preventing slippage during rotation, and making it easier for the operator to rotate the knob cover 2 to drive the knob core 1 to rotate, thereby achieving a higher level of knob adjustment function. In this embodiment, 36 anti-slip strips 23 are provided.

[0043] Specifically, car audio knobs are usually made of plastic, and the surface treatment is usually spray painting or electroplating. After long-term use, the paint on the surface of the plastic knob will wear off, and the electroplated knob will also bubble and peel off over time. In this embodiment, the knob cover 2 is made of aluminum, the knob core 1 is made of plastic, and the knob cover 2 is made by drawing aluminum. The natural color of aluminum is silver, and it will not fade after long-term use, which can solve the problems of wear and oil removal or electroplating bubbling and peeling.

[0044] Furthermore, the knob cover 2 is directly drawn into a 36-sided shape using an aluminum drawing process. The surface of the knob cover 2 is coated with a color coating. After aluminum drawing, the knob cover 2 undergoes an oxidation process to achieve the desired color, such as silver, black, or orange, making the knob cover 2 more aesthetically pleasing and simple. Made of aluminum, which is silver in color, it will not fade over long-term use. Moreover, the knob cover 2 obtained through the aluminum drawing process is more robust and durable than that made of plastic, less prone to wear, and has a longer service life, better protecting the internal knob core 1 from damage.

[0045] Specifically, such as Figure 7-10 As shown, it also includes a button 3, which in this embodiment is an coded potentiometer. The button 3 includes a D-shaped shaft 31. The knob core 1 is provided with a connector 15. The connector 15 is provided with a D-shaped hole 151 adapted to the D-shaped shaft 31. The D-shaped shaft 31 and the D-shaped hole 151 are interference-fitted. In use, the D-shaped hole 151 of the connector 15 is aligned with the D-shaped shaft 31, so that the knob cover 2 and the knob core 1, which are assembled as a whole, are connected by the D-shaped hole shaft, eliminating the need for axial positioning pins, reducing the cost of parts, and at the same time, the characteristic of the D-shaped hole shaft to perform unidirectional insertion is used to prevent axial symmetry misassembly.

[0046] Furthermore, such as Figure 11-12 As shown, due to the long-term interference fit between the D-shaped shaft 31 and the D-shaped hole 151, the D-shaped hole 151 may crack, leading to the loosening of the D-shaped shaft 31 and the D-shaped hole 151. Therefore, in order to prevent the knob core 1 from detaching from the button 3, the connector 15 is also provided with two U-shaped grooves 152. When the D-shaped hole 151 is inserted into the D-shaped shaft 31 for interference fit, the D-shaped hole 151 with the U-shaped grooves 152 will open appropriately and clamp the D-shaped shaft 31 on the button 3. This ensures that the button 3 and the knob core 1 are tightly connected and will not fall off, while also extending the service life of the connector 15 of the knob core 1.

[0047] In this embodiment, the connector 15, the boss 11, and the bottom cover 16 are integrally formed.

[0048] The following is a detailed explanation of the working principle of this utility model;

[0049] During assembly, the guide post 14 is aligned with the guide groove 22, and the knob core 1 is inserted into the knob cover 2. At this time, the hook 13 is engaged in the recessed ring 21. When the hook is pressed down and deformed, a rib 12 is provided on the side away from the hook 13 to prevent the knob core 1 from separating from the knob cover 2. After assembling the knob core 1 and the knob cover 2 into one piece, the plug 15 of the knob core 1 is aligned with the D-shaped shaft 31 of the button 3, so that the D-shaped hole 151 and the D-shaped shaft 31 are interference-fitted, thereby connecting the knob core 1 and the button 3 together. At the same time, a U-shaped groove 152 is provided so that when the D-shaped hole 151 and the D-shaped shaft 31 are interference-fitted, the D-shaped hole 151 with the U-shaped groove 152 will open appropriately, clamping the D-shaped shaft 31 of the button 3 to ensure that it will not fall off.

[0050] The innovation of this utility model lies in the hook component on the protrusion of the knob core, which engages with the concave ring on the inner circumferential wall of the knob cover for quick assembly. Ribs are provided on the side of the protrusion away from the hook component to enhance its bending strength and maintain the structural rigidity of the hook component. When the knob cover is pressed down, the ribs resist the elastic deformation of the hook component, limiting its internal deformation and ensuring the snap-fit ​​connection remains locked within the concave ring, effectively preventing the knob core from detaching from the knob cover. Even if the user accidentally presses the knob cover, the hook component will not retract or disengage. The connector also features a U-shaped groove; when the D-shaped hole is inserted into the D-shaped shaft, it will open appropriately with elasticity, clamping the D-shaped shaft and ensuring a tight connection between the button and the knob core, extending the service life of the connector. This solves the problem of the D-shaped shaft and the D-shaped hole cracking due to prolonged interference fit, leading to the knob core detaching from the button.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A knob structure, characterized in that, It includes a knob core (1) and a knob cover (2) sleeved on the outside of the knob core (1). The knob core (1) and the knob cover (2) are snapped together. The knob core (1) includes a boss (11) and a hook (13) is provided on the boss (11). The inner peripheral wall of the knob cover (2) is provided with a concave ring (21) that is adapted to the hook (13). The boss (11) has a rib (12) on the side opposite to the hook (13).

2. The knob structure according to claim 1, characterized in that, The boss (11) is also provided with a guide post (14), and the inner peripheral wall of the knob cover (2) is provided with a guide groove (22) that is adapted to the guide post (14).

3. The knob structure according to claim 2, characterized in that, The boss (11) includes a first connector (111) and a second connector (112). The hook (13) is disposed on the first connector (111), the guide post (14) is disposed on the second connector (112), and the rib (12) is disposed on the back of the hook (13) on the first connector (111).

4. The knob structure according to claim 3, characterized in that, A gap (113) is provided between the first connector (111) and the second connector (112).

5. The knob structure according to claim 3, characterized in that, The guide post (14) is provided in three parts.

6. The knob structure according to claim 2, characterized in that, The knob cover (2) is hollow inside, and a number of anti-slip strips (23) are provided on the outer peripheral wall of the knob cover (2), and the anti-slip strips (23) are spaced apart in the circumferential direction.

7. The knob structure according to claim 6, characterized in that, The knob cover (2) is made of aluminum and is produced by aluminum drawing process.

8. The knob structure according to claim 7, characterized in that, The surface of the knob cover (2) is coated with a color.

9. The knob structure according to claim 1, characterized in that, It also includes a button (3), which includes a D-shaped shaft (31). The knob core (1) is provided with a connector (15), and the connector (15) is provided with a D-shaped hole (151) adapted to the D-shaped shaft (31). The D-shaped shaft (31) and the D-shaped hole (151) are interference-fitted.

10. A knob structure according to claim 9, characterized in that, The connector (15) is also provided with two U-shaped grooves (152).

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