Roller switch of automobile steering wheel

Abstract

The utility model discloses a roller switch of an automobile steering wheel, which comprises a roller support, a rotating shaft rotatably mounted on the roller support, a shading gear rotatably mounted on the roller support and a roller sleeved on the rotating shaft. The rotating shaft is provided with a driving gear meshed with the transmission gear, the shading gear is provided with a driven gear meshed with the transmission gear, and the roller support is further provided with a positioning module used for positioning rotation of the roller.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller switches and relates to a roller switch for an automobile steering wheel. Background Art

[0002] With the booming development of the automobile industry, there are various designs of automobile steering wheel switches. The roller switch is a very common module in the automobile steering wheel. Rolling the roller can realize the function of increasing or decreasing the volume of the in-vehicle audio. In order to extend the service life of the roller, enable the light-shielding gear to rotate and position accurately, and at the same time reduce the probability of accidental touch, it is necessary to design a roller switch for an automobile steering wheel to solve the above problems. Summary of the Invention

[0003] The purpose of the utility model is to provide a roller switch for an automobile steering wheel in view of the above problems existing in the prior art.

[0004] To achieve the above purpose, the technical solution of the utility model is: a roller switch for an automobile steering wheel, including a roller bracket, a rotating shaft rotatably installed on the roller bracket, a light-shielding gear rotatably installed on the roller bracket, and a roller sleeved on the rotating shaft. It is characterized in that a transmission gear is also rotatably installed on the roller bracket, a driving gear meshing with the transmission gear is provided on the rotating shaft, a driven gear meshing with the transmission gear is provided on the light-shielding gear, and a positioning module for positioning the rotation of the roller is also installed on the roller bracket.

[0005] The positioning module includes a fixed shaft, a spring, a steel ball and an orbital cylinder. The roller is fixed outside the orbital cylinder, the orbital cylinder is fixedly connected to the outside of the rotating shaft, an annular wave-shaped positioning part is provided inside the orbital cylinder, the positioning part is composed of a plurality of convex parts and a plurality of concave parts, the fixed shaft is installed on the roller bracket, the spring and the steel ball are sequentially installed in the assembly hole of the fixed shaft, and under the elastic force of the spring, the steel ball can be stuck into any one of the concave parts of the positioning part.

[0006] The material of the roller is stainless steel, and its surface treatment process adopts electroplating processing.

[0007] A roller cover plate is also fixedly connected to the orbital cylinder.

[0008] The material of the roller cover plate is plastic, and its surface treatment process adopts electroplating processing.

[0009] The module of the driving gear is 0.4, the number of teeth is 12, the pitch diameter is 4.8 mm, and the pressure angle is 20°; the module of the transmission gear is 0.4, the number of teeth is 24, the pitch diameter is 9.6 mm, and the pressure angle is 20°; the module of the driven gear is 0.4, the number of teeth is 6, the pitch diameter is 2.4 mm, and the pressure angle is 20°.

[0010] By adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0011] The present utility model adopts the design of using steel balls. The use of steel balls reduces friction, realizes the smooth rolling and positioning of the rollers. This design not only improves the convenience and accuracy of operation, but also extends the service life of the rollers; the roller material is made of stainless steel, the surface treatment process adopts electroplating with water, the roller cover plate material is made of plastic, and the surface treatment process also adopts electroplating with water. The design of electroplating the metal roller with water greatly reduces the probability of accidental touch and improves the driving safety. Description of the Drawings

[0012] Figure 1 is the three-dimensional structural schematic diagram of the present utility model.

[0013] Figure 2 is the exploded view of the present utility model.

[0014] Figure 3 is the three-dimensional structural schematic diagram of the removed part of the present utility model.

[0015] Figure 4 is the three-dimensional structural schematic diagram of the track cylinder in the present utility model.

[0016] Figure 5 is the three-dimensional structural schematic diagram of the light-shielding gear in the present utility model.

[0017] Figure 6 is the three-dimensional structural schematic diagram of the rotating shaft in the present utility model.

[0018] Figure 7 is the three-dimensional structural schematic diagram of the fixed shaft in the present utility model.

[0019] In the figure, 1, roller; 2, roller bracket; 3, rotating shaft; 3a, driving gear; 4, transmission gear; 5, light-shielding gear; 5a, driven gear; 5b, fan blade; 6, roller cover plate; 7, track cylinder; 7a, positioning part; 8, fixed shaft; 8a, assembly hole; 9, spring; 10, steel ball. Detailed Embodiments

[0020] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0021] Such as Figures 1 - 7As shown in the figure, the roller switch of the car steering wheel includes a roller bracket 2, a rotating shaft 3 rotatably installed on the roller bracket 2, a light-shielding gear 5 rotatably installed on the roller bracket 2, and a roller 1 sleeved on the rotating shaft 3. A transmission gear 4 is also rotatably installed on the roller bracket 2. The rotating shaft 3 has a driving gear 3a meshing with the transmission gear 4, and the light-shielding gear 5 has a driven gear 5a meshing with the transmission gear 4. A positioning module for positioning the rotation of the roller 1 is also installed on the roller bracket 2.

[0022] The positioning module includes a fixed shaft 8, a spring 9, a steel ball 10, and an orbital cylinder 7. The roller 1 is fixed outside the orbital cylinder 7, and the orbital cylinder 7 is fixedly connected to the outside of the rotating shaft 3. The orbital cylinder 7 has an annular wavy positioning portion 7a inside, and the positioning portion 7a is composed of a plurality of convex portions and a plurality of concave portions. The fixed shaft 8 is installed on the roller bracket 2, and the spring 9 and the steel ball 10 are sequentially installed in the assembly hole 8a of the fixed shaft 8. Under the elastic force of the spring 9, the steel ball 10 can be stuck into any one of the concave portions of the positioning portion 7a.

[0023] The material of the roller 1 is stainless steel, and its surface treatment process is electroplating, and the color is twilight silver or midnight black.

[0024] A roller cover plate 6 is also fixedly connected to the orbital cylinder 7.

[0025] The material of the roller cover plate 6 is plastic, and its surface treatment process is electroplating, and the color is twilight silver or midnight black.

[0026] In this embodiment, the fixed shaft 8, the rotating shaft 3, the transmission gear 4, and the orbital cylinder 7 are made of existing POM black plastic particles by injection molding. The light-shielding gear 5 is made of existing POM plastic particles by injection molding. The roller bracket 2 is made of existing plastic particles by injection molding.

[0027] The module of the driving gear 3a is 0.4, the number of teeth is 12, the pitch diameter is 4.8 mm, and the pressure angle is 20°; the module of the transmission gear 4 is 0.4, the number of teeth is 24, the pitch diameter is 9.6 mm, and the pressure angle is 20°; the module of the driven gear 5a is 0.4, the number of teeth is 6, the pitch diameter is 2.4 mm, and the pressure angle is 20°; of course, in practice, the above values of the driving gear 3a, the transmission gear 4, and the driven gear 5a can also be adjusted accordingly.

[0028] The utility model adopts the design of using steel balls 10. The use of steel balls 10 reduces friction, realizes the smooth rolling and positioning of the roller 1. This design not only improves the convenience and accuracy of operation, but also extends the service life of the roller 1; the roller 1 is made of stainless steel, and the surface treatment process is electroplating with water. The roller cover plate 6 is made of plastic, and the surface treatment process is also electroplating with water. The design of electroplating the metal roller 1 reduces the probability of accidental touch and improves the driving safety greatly.

[0029] The roller switch mainly consists of a roller 1, a roller bracket 2, a rotating shaft 3, a transmission gear 4, a light-shielding gear 5, a roller cover plate 6, a track, a fixed shaft 8, a spring 9 and steel balls 10. It will be described in two parts. Among them, the spring 9 and the steel balls 10 are first installed in the assembly hole 8a above the fixed shaft 8. After installation, they are installed in the track cylinder 7. One side of the fixed shaft 8 is assembled to the track cylinder 7. The annular wavy positioning part 7a designed inside the track cylinder 7 cooperates with the steel balls 10 and the spring 9 to achieve the final rolling motion. The steel balls 10 are adopted, and the use of steel balls 10 realizes smooth rolling and reduces friction. This design not only improves the convenience of operation, but also extends the service life of the roller 1; secondly, a roller cover plate 6 is added at the opening of the track cylinder 7. After the roller cover plate 6 is assembled, the track cylinder 7 is assembled into the roller 1, and at the same time, the roller cover plate 6 is closed with the roller 1; the rotating shaft 3 is installed on the roller 1, and the first part is assembled.

[0030] The second part mainly consists of a fixed shaft 8, a rotating shaft 3, a transmission gear 4 and a light-shielding gear 5. Among them, the fixed shaft 8 and the rotating shaft 3 have been assembled to the first part; first, the first part is assembled to the roller bracket 2. The other side of the fixed shaft 8 is installed at the side of the roller bracket 2, and the rotating shaft 3 is installed on the roller bracket 2. Attention should be paid to the matching between the structures during installation; for the driving gear 3a, the transmission gear 4 and the driven gear 5a, when designing the gear module of the three, factors such as the strength and life of the plastic gear are considered. Combining with existing products, the gear module m is designed to be; secondly, the transmission gear 4 is assembled to the roller bracket 2, and finally the light-shielding gear 5 is assembled to the roller bracket 2. Through a series of matching designs, the mechanical function of the roller 1 rolling is realized.

[0031] The rolling of the roller 1 realizes the function of adding and subtracting gears in the switch. The most important thing is the cooperation of the driving gear 3a, the transmission gear 4 and the driven gear 5a. The fan blade 5b of the light-shielding gear 5 is inserted into the photoelectric encoder to rotate and transmit information, and finally the function of this roller switch is achieved.

[0032] In this embodiment, the depth at which the fan blade 5b of the light-shielding gear 5 is inserted into the photoelectric encoder is: ≥ 1.8 mm. Since the distance from the bottom of the light-emitting lamp core of the photoelectric encoder to the top of the photoelectric encoder is 1.5 mm, considering assembly, manufacturing errors, and the divergence of light, h ≥ 1.8 mm to ensure that the light-shielding gear 5 can fully cut the photoelectric signal and make the signal on / off normal. Of course, in practice, this insertion depth can be adjusted accordingly according to the actual situation to enable it to fully cut the photoelectric signal.

[0033] The above components are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0034] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A roller switch for an automotive steering wheel, comprising a roller bracket (2), a rotating shaft (3) rotatably mounted on the roller bracket (2), a light-shielding gear (5) rotatably mounted on the roller bracket (2), and a roller (1) sleeved on the rotating shaft (3), characterized in that, A transmission gear (4) is also rotatably mounted on the roller bracket (2). An active gear (3a) meshing with the transmission gear (4) is provided on the rotating shaft (3). A driven gear (5a) meshing with the transmission gear (4) is provided on the light-shielding gear (5). A positioning module for positioning the rotation of the roller (1) is also mounted on the roller bracket (2).

2. The roller switch of an automobile steering wheel according to claim 1, characterized in that, The positioning module includes a fixed shaft (8), a spring (9), a steel ball (10) and an orbital cylinder (7). The roller (1) is fixed outside the orbital cylinder (7). The orbital cylinder (7) is fixedly connected to the outside of the rotating shaft (3). An annular wavy positioning portion (7a) is provided inside the orbital cylinder (7). The positioning portion (7a) is composed of a plurality of convex portions and a plurality of concave portions. The fixed shaft (8) is mounted on the roller bracket (2). The spring (9) and the steel ball (10) are sequentially mounted in the assembly hole (8a) of the fixed shaft (8). Under the elastic force of the spring (9), the steel ball (10) can be engaged into any one of the concave portions of the positioning portion (7a).

3. The roller switch of an automotive steering wheel according to claim 1, characterized in that, The roller (1) is made of stainless steel, and its surface is processed by electroplating.

4. The roller switch of an automotive steering wheel according to claim 2, characterized in that, A roller cover plate (6) is also fixedly connected to the orbital cylinder (7).

5. The roller switch of an automotive steering wheel according to claim 4, wherein, The roller cover plate (6) is made of plastic, and its surface is processed by electroplating.

6. The roller switch of an automotive steering wheel according to claim 1, characterized in that, The module of the active gear (3a) is 0.4, the number of teeth is 12, the pitch diameter is 4.8 mm, and the pressure angle is 20°; the module of the transmission gear (4) is 0.4, the number of teeth is 24, the pitch diameter is 9.6 mm, and the pressure angle is 20°; the module of the driven gear (5a) is 0.4, the number of teeth is 6, the pitch diameter is 2.4 mm, and the pressure angle is 20°.

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