Knob paragraph sense side pressure torsion spring structure

Abstract

The utility model relates to knob structure technical field especially relates to a knob paragraph feels side pressure torsional spring structure, include: rear housing, mainboard support, mainboard support with rear housing fixed interface, be equipped with torsional spring mounting area on mainboard support lateral wall, the middle part of torsional spring mounting area is equipped with positioning structure, the both ends of torsional spring mounting area are equipped with the downward limit stop structure, side pressure torsional spring, side pressure torsional spring includes the torsional spring post that middle part disc spirals and the straight edge that the both ends of torsional spring post respectively extend to both ends, the positioning structure in torsional spring mounting area is covered and is equipped with on the positioning structure, the limit stop structure with straight edge limit stop cooperation to limit straight edge, knob, with rear housing rotatable interface, the inside wall of knob is equipped with along the circumferential distribution wave tooth, wave tooth with the outside along of torsional spring post elasticity abuts, rotates knob, the outside along of torsional spring post along the tooth peak and tooth valley of wave tooth cyclic sliding, forms paragraph feeling.

Description

Technical Field

[0001] This utility model relates to the field of knob structure technology, and in particular to a knob segmented side pressure torsion spring structure. Background Technology

[0002] As a common human-computer interaction component, knobs are widely used in automobiles, home appliances, industrial equipment and other fields. In some scenarios, knobs need to have a "step-like" feel (that is, to generate periodic feedback force during rotation to prompt the user that they have turned to a specific gear) in order to improve the accuracy of operation.

[0003] Most existing knobs with tactile feedback use a "spring-steel ball structure," such as the center console knob in a car. The principle of this structure is as follows: a spring is set inside the knob, with one end of the spring abutting against the inner wall of the knob and the other end connected to a steel ball. The back cover has annularly distributed grooves corresponding to the position of the steel ball. When the knob is rotated, the steel ball is inserted into / out of the groove under the pushing force of the spring, creating a tactile feedback.

[0004] However, this structure has obvious flaws: Stiff and not smooth: The steel ball and the groove are in rigid contact. The spring force needs to overcome the friction between the steel ball and the groove to achieve gear switching, which makes the operation feel stiff and prone to jamming during rotation. Poor product consistency: The spring force has production tolerances (such as wire diameter deviation, effective number of turns deviation), which leads to different steel ball thrusts in different products, resulting in large differences in rotational torque. Some products have too much torque and are difficult to rotate, while some products have too little torque and the tactile feedback is not clear. Poor long-term stability: Springs are prone to fatigue deformation when subjected to long-term force, resulting in decreased elasticity, blurred tactile feedback, and reduced product lifespan. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and to provide a knob tactile side-pressure torsion spring structure, including: Back cover; A motherboard bracket is fixedly connected to the rear shell. A torsion spring mounting area is provided on the side wall of the motherboard bracket. A positioning structure is provided in the middle of the torsion spring mounting area, and downward limiting structures are provided at both ends of the torsion spring mounting area. A side-pressure torsion spring, comprising a torsion spring column coiled in the middle and straight edges extending to both ends of the torsion spring column, wherein the torsion spring column is sleeved on a positioning structure in the torsion spring mounting area, and the limiting structure cooperates with the straight edges to limit the straight edges. The knob is rotatably connected to the rear shell. The inner sidewall of the knob is provided with wavy teeth distributed circumferentially. The wavy teeth elastically abut against the outer edge of the torsion spring column. When the knob is rotated, the outer edge of the torsion spring column slides cyclically along the tooth peaks and valleys of the wavy teeth, forming a segmented feel.

[0006] Furthermore, the torsion spring post forms tactile bumps on the arc-shaped surface near the inner wall of the knob.

[0007] Furthermore, the torsion spring mounting area is a hollow area on the motherboard bracket that accommodates the torsion spring post, and the positioning structure is a positioning post located at the center of the bottom surface of the hollow area, with the outer diameter of the positioning structure matching the inner diameter of the torsion spring post.

[0008] Furthermore, the outer edges of both ends of the hollow area extend circumferentially toward the rear shell to form two hollow grooves. The top of the two hollow grooves is provided with a limiting boss facing the outer wall of the motherboard bracket. The limiting boss is the limiting structure, and the lower end face of the limiting structure abuts against the straight edge of the side pressure torsion spring.

[0009] Furthermore, the side-pressure torsion spring is integrally formed from elastic metal wire, which is piano wire, phosphor bronze wire, or stainless steel wire.

[0010] Furthermore, the peaks and valleys of the wavy teeth are both arc-shaped structures, and the radius of the arc-shaped tip of the tactile protrusion matches the arc-shaped radius of the valley of the wavy teeth.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The side pressure torsion spring structure of the knob with tactile feedback of this utility model is integrally formed from elastic metal wire. Its elastic deformation process is smooth. Compared with the hard resistance of the spring steel ball structure, it has a smoother and softer feel and no sense of jamming.

[0012] 2. The positioning and limiting structure of the knob segmented side pressure torsion spring structure of this utility model ensures the stability of the side pressure torsion spring position, avoids torque fluctuation caused by component shaking, and significantly improves product consistency.

[0013] 3. The side-pressure torsion spring structure of the knob with tactile feedback of this utility model has a long fatigue life and its elastic performance decays slowly after long-term use, which can ensure the long-term stable tactile feedback of the product. Compared with the spring steel ball structure, this structure achieves tactile feedback only through the cooperation of the side-pressure torsion spring and the wave-shaped teeth. It has fewer parts, simpler assembly process, and helps to reduce production costs. Attached Figure Description

[0014] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a combined diagram of a knob-type tactile side-pressure torsion spring structure according to the present invention; Figure 2 This is an exploded view of a knob-type tactile side-pressure torsion spring structure according to this utility model; Figure 3 This is a schematic diagram of a side-pressure torsion spring structure for a knob with tactile feedback according to this utility model; Figure 4 This is a schematic diagram of a knob with a tactile, side-pressure torsion spring structure according to the present invention.

[0015] Figure Labels 1: Back cover; 2: Motherboard bracket; 21: Torsion spring mounting area; 22: Positioning structure; 23: Limiting structure; 3: Side-compression torsion spring; 31: Torsion spring post; 32: Straight edge; 33: Tactile bumps; 4: Knob; 41: Wavy teeth. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0017] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0018] First Embodiment Please see Figure 1-4 The technical solution of the knob tactile side-pressure torsion spring structure provided in this embodiment includes the following: Back cover 1; The motherboard bracket 2 is fixedly connected to the rear shell 1. The motherboard bracket 2 has a torsion spring mounting area 21 on its side wall. The torsion spring mounting area 21 has a positioning structure 22 in the middle and downward limiting structures 23 at both ends. The side-pressure torsion spring 3 includes a torsion spring column 31 coiled in the middle and straight edges 32 extending to both ends of the torsion spring column 31. The torsion spring column 31 is sleeved on the positioning structure 22 in the torsion spring mounting area 21. The limiting structure 23 cooperates with the straight edge 32 to limit the straight edge 32. The knob 4 is rotatably connected to the rear shell 1. The inner sidewall of the knob 4 is provided with wavy teeth 41 distributed circumferentially. The wavy teeth 41 elastically abut against the outer edge of the torsion spring column 31. When the knob 4 is rotated, the outer edge of the torsion spring column 31 slides cyclically along the tooth peaks and tooth valleys of the wavy teeth 41, forming a segmented feel.

[0019] In specific implementation, as shown in the appendix Figure 2 As shown, from top to bottom, the components are: back cover 1, motherboard bracket 2, and knob 4. The side pressure torsion spring 3 is set in the groove of the side wall of the motherboard bracket 2. In specific implementation, this application does not impose specific restrictions on the connection method between the back cover 1 and the motherboard bracket 2 and the knob 4. For example, the back cover 1 and the motherboard bracket 2 can be connected by bolts, etc., and the knob 4 and the back cover 1 can be connected by a guide groove and a guide boss that can rotate relative to each other, etc. Any structure that can realize the fixed connection between the back cover 1 and the motherboard bracket 2, and any structure that can realize the rotatable connection between the knob 4 and the back cover 1 can be used in this utility model.

[0020] In a specific implementation, the arc-shaped surface of the torsion spring post 31 near the inner wall of the knob 4 forms a tactile protrusion 33. The tactile protrusion 33 slides with the tooth peaks and tooth valleys of the arc-shaped structure of the wave-shaped tooth 41, wherein the radius of the tactile protrusion 33 is adapted to the arc radius of the tooth valley of the wave-shaped tooth 41.

[0021] Specifically, as shown in the attached document Figure 2 As shown, the torsion spring mounting area 21 is a hollow area on the motherboard bracket 2 that accommodates the torsion spring post 31. The positioning structure 22 is a positioning post located at the center of the bottom surface of the hollow area, and the outer diameter of the positioning structure 22 matches the inner diameter of the torsion spring post 31. The outer edges of both ends of the hollow area extend circumferentially towards the rear shell 1 to form two hollow grooves. The top of the two hollow grooves is provided with a limiting boss facing the outer wall of the motherboard bracket 2. The limiting boss is the limiting structure 23. The lower end face of the limiting structure 23 abuts against the straight edge 32 of the side pressure torsion spring 3. The limiting structure 23 and the positioning structure 22 cooperate to prevent the side pressure torsion spring 3 from falling off or shifting.

[0022] In the accompanying drawings of this application, both limiting bosses are located at the top of the hollowed-out grooves. Since the two straight edges 32 of the side-pressure torsion spring 3 are located at the upper and lower ends of the torsion spring column 31 respectively, only the lower end face of one of the limiting bosses in the accompanying drawings of this application abuts against the straight edge 32 of the upper end face of the torsion spring column 31. In actual use, if it is desired to further fix the side-pressure torsion spring 3, one of the limiting bosses can be set at the top of one of the hollowed-out grooves; the other limiting boss can be set at the bottom of the other hollowed-out groove, but a straight edge 32 installation gap needs to be left between the lower end face of the bottom limiting boss and the bottom of the hollowed-out groove. Under this optimized structure, the two straight edges 32 of the side-pressure torsion spring 3 can be limited and fixed.

[0023] Specifically, the side-pressure torsion spring 3 is integrally formed from elastic metal wire, which is piano wire, phosphor bronze wire or stainless steel wire.

[0024] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A knob-type tactile side-pressure torsion spring structure, characterized in that, include: Back cover; A motherboard bracket is fixedly connected to the rear shell. A torsion spring mounting area is provided on the side wall of the motherboard bracket. A positioning structure is provided in the middle of the torsion spring mounting area, and downward limiting structures are provided at both ends of the torsion spring mounting area. A side-pressure torsion spring, comprising a torsion spring column coiled in the middle and straight edges extending to both ends of the torsion spring column, wherein the torsion spring column is sleeved on a positioning structure in the torsion spring mounting area, and the limiting structure cooperates with the straight edges to limit the straight edges. The knob is rotatably connected to the rear shell. The inner sidewall of the knob is provided with wavy teeth distributed circumferentially. The wavy teeth elastically abut against the outer edge of the torsion spring column. When the knob is rotated, the outer edge of the torsion spring column slides cyclically along the tooth peaks and valleys of the wavy teeth, forming a segmented feel.

2. The knob tactile feedback side-pressure torsion spring structure according to claim 1, characterized in that: The torsion spring post forms a tactile bump on the arc-shaped surface near the inner wall of the knob.

3. The knob tactile feedback side-pressure torsion spring structure according to claim 2, characterized in that: The torsion spring mounting area is a hollow area on the motherboard bracket that accommodates the torsion spring post. The positioning structure is a positioning post located at the center of the bottom surface of the hollow area, and the outer diameter of the positioning structure matches the inner diameter of the torsion spring post.

4. The knob tactile feedback side-pressure torsion spring structure according to claim 3, characterized in that: The outer edges of the two ends of the hollow area extend circumferentially toward the rear shell to form two hollow grooves. The top of the two hollow grooves is provided with a limiting boss facing the outer wall of the motherboard bracket. The limiting boss is the limiting structure. The lower end face of the limiting structure abuts against the straight edge of the side pressure torsion spring.

5. The knob tactile feedback side-pressure torsion spring structure according to claim 1, characterized in that, The side-pressure torsion spring is integrally formed from elastic metal wire, which can be piano wire, phosphor bronze wire, or stainless steel wire.

6. The knob tactile side-pressure torsion spring structure according to claim 2, characterized in that, The peaks and valleys of the wavy teeth are both arc-shaped structures, and the radius of the arc-shaped tip of the tactile protrusion matches the radius of the arc-shaped valley of the wavy teeth.

Images