A knob fixture

Abstract

This utility model belongs to the field of positioning fixture technology, and particularly relates to a knob fixture, comprising: a fixed base; a drive motor, the body of which is mounted on the fixed base, and the output end of which is connected to a lead screw via a coupling; a mounting base, which is mounted on the drive motor body near the lead screw, the mounting base having a straight groove and a mounting cavity communicating with the straight groove, the lead screw passing through the straight groove and extending into the mounting cavity; and a positioning head, which is mounted in the mounting cavity and threadedly connected to the lead screw, the positioning head being configured to move only in a straight line within the mounting cavity; wherein the positioning head is configured with a fixed section fixed to the knob body and an inclined section abutting against the concave edge of the knob. This utility model's knob fixture improves the stability and production efficiency of manual or automated production lines, has a simple structure, is applicable to various knob products, and greatly meets the increasingly complex and varied industrial needs.

Description

Technical Field

[0001] This utility model belongs to the field of positioning fixture technology, and in particular relates to a knob fixture. Background Technology

[0002] Knob jigs are essential tools widely used in the machinery and electronics industries, primarily for fixing and positioning products during machining or assembly. In many precision manufacturing and assembly applications, knob jigs are widely used due to their excellent fixing performance and good adjustability. Knob jigs can precisely control the correct position of products, ensuring the stability of the operation process and the quality of the products. With the continuous improvement of industrial automation and intelligence, how to design more efficient, precise, and easy-to-operate knob jigs has become a current research focus.

[0003] While various knob fixture designs and applications exist in the current market and industry, these problems remain prevalent: due to the lack of an effective locking and release mechanism, knob fixtures are prone to causing difficulty in releasing products or damage to products during use, posing a threat to the stability and production efficiency of manual or automated production lines. Therefore, developing a knob fixture that is simple in structure, easy to operate, widely adaptable, and has stable locking is crucial for improving product quality and production efficiency.

[0004] Given the above background, the market demand for a new type of knob fixture is growing. This knob fixture not only needs to have the basic functions of the aforementioned knob fixtures, but also needs to overcome the shortcomings of existing technologies and provide a more flexible and stable fixing solution to adapt to increasingly complex and changing industrial needs. Utility Model Content

[0005] The purpose of this utility model is to provide a knob fixture, which aims to solve the technical problems of difficulty in releasing products and easy damage to products in the use of existing knob fixtures.

[0006] To achieve the above objectives, this utility model provides a knob fixture, comprising: Fixed base; A drive motor, the body of which is mounted on the fixed base, and the output end of which is connected to a lead screw via a coupling; Mounting base, the mounting base is installed on the drive motor body at one end near the lead screw, the mounting base has a straight groove and a mounting cavity communicating with the straight groove, the lead screw passes through the straight groove and extends into the mounting cavity; A positioning head is installed in the mounting cavity and threadedly connected to the lead screw, and the positioning head is configured to move only in a straight line within the mounting cavity; The positioning head is configured with a fixing section that is fixed to the knob body and an inclined section that abuts against the concave edge of the knob.

[0007] Optionally, the inclined segments are configured to be symmetrically arranged on both sides of the positioning head.

[0008] Optionally, the inclined segment is provided as an arc-shaped surface, and the central angle corresponding to the arc range of the arc-shaped surface is 15°~45°.

[0009] Optionally, the inner wall of the mounting cavity is provided with a limiting protrusion extending along its axial direction, and the outer wall of the positioning head is provided with a limiting groove that slides with the limiting protrusion.

[0010] Optionally, the mounting cavity is provided with an axial buffer cavity, and a buffer spring that abuts against the end of the positioning head is installed in the buffer cavity.

[0011] Optionally, the fixed segment is configured as a cylindrical shape.

[0012] Optionally, the surface of the positioning head is coated with a lubricating coating.

[0013] Optionally, the positioning head is configured to be flexible.

[0014] Optionally, the drive motor is a servo motor, and a shock-absorbing rubber pad is provided between the drive motor and the fixed base.

[0015] Optionally, the knob fixture further includes a position sensor mounted on the mounting base and used to detect the position of the positioning head.

[0016] The knob fixture provided in this embodiment of the present invention has at least one of the following technical effects: This utility model discloses a knob fixture. By mounting the drive motor body on a fixed base, its output end is connected to a lead screw via a coupling. The lead screw, in conjunction with the straight groove and mounting cavity within the mounting base, allows stable passage and drives the positioning head. The positioning head can only move in a straight line within the mounting cavity and is equipped with a fixed section that is fixed to the knob body and an inclined section that abuts against the concave edge of the knob. This structural design ensures that the positioning head accurately and stably engages with the knob when fixing it, effectively avoiding release difficulties or product damage caused by insufficient locking and release mechanisms. Furthermore, the linear movement of the positioning head combined with the drive motor makes the entire fixing and releasing process simple and easy to control, improving the stability and production efficiency of manual or automated production lines. Its simple structure is applicable to various knob products, greatly meeting the increasingly complex and varied industrial needs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the knob fixture of this utility model.

[0019] Figure 2 This is a cross-sectional view of the knob fixture of this utility model.

[0020] Figure 3 This is a structural schematic diagram of the knob fixture of this utility model from another perspective.

[0021] Figure 4 for Figure 3 A magnified schematic diagram of a local structure.

[0022] The following are the labeling elements in the figure: 10. Fixed base; 20. Drive motor; 30. Mounting base; 31. Mounting cavity; 40. Positioning head; 41. Fixing section; 42. Inclined section; 43. Limiting groove; 311. Limiting protrusion; 312. Axial buffer cavity. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0027] In one embodiment of this utility model, such as Figures 1-4 As shown, a knob fixture is provided, comprising: Fixture 10; A drive motor 20 is mounted on the fixed base 10, and the output end of the drive motor 20 is connected to a lead screw via a coupling. Mounting base 30 is mounted on the body of the drive motor 20 near one end of the lead screw. The mounting base 30 has a straight groove and a mounting cavity 31 communicating with the straight groove. The lead screw passes through the straight groove and extends into the mounting cavity 31. A positioning head 40 is installed in the mounting cavity 31 and threadedly connected to the lead screw. The positioning head 40 is configured to move only in a straight line within the mounting cavity 31. The positioning head 40 is configured with a fixing section 41 that is fixed to the knob body and an inclined section 42 that abuts against the concave cap edge of the knob.

[0028] Specifically, the knob fixture of this utility model, by mounting the drive motor 20 body on the fixed base 10, with its output end connected to the lead screw via a coupling, and cooperating with the straight groove and mounting cavity 31 in the mounting base 30, allows the lead screw to stably pass through and drive the positioning head 40 to move. The positioning head 40 can only move in a straight line within the mounting cavity 31, and is equipped with a fixed section 41 that is fixed to the knob body and an inclined section 42 that abuts against the concave cap edge of the knob. This structural design allows the positioning head 40 to accurately and stably cooperate with the knob when fixing it, effectively avoiding problems such as release difficulties or product damage caused by insufficient locking and release mechanisms. At the same time, the linearly moving positioning head 40 combined with the drive motor 20 makes the entire fixing and releasing process simple to operate and easy to control, improving the stability and production efficiency of manual or automated production lines. Moreover, the structure is simple, applicable to a variety of knob products, and greatly meets the increasingly complex and ever-changing industrial needs.

[0029] In another embodiment of this utility model, such as Figures 1-4 As shown, the inclined segments 42 are symmetrically arranged on both sides of the positioning head 40. Specifically, the symmetrical arrangement of the inclined segments 42 on both sides of the positioning head 40 ensures that the positioning head 40 provides a symmetrical and balanced force when it abuts against the concave edge of the knob. This symmetrical structural design effectively avoids the problem of the knob shifting or tilting during the fixing process due to uneven force on one side, greatly improving the stability and reliability of the knob fixing. At the same time, the symmetrical inclined segment 42 structure facilitates standardized operations when installing and removing the knob, allowing for smoother fixing and releasing of the knob in both manual and automated production lines, further improving production efficiency.

[0030] In another embodiment of this utility model, such as Figures 1-4 As shown, the inclined section 42 is arranged in an arc shape, and the central angle corresponding to the arc range of the arc surface is 15°~45°. Specifically, the inclined section 42 adopts an arc surface with a specific arc range. Compared with a plane or other irregular shapes, the arc surface makes a better contact with the concave edge of the knob, forming a larger contact area and thus increasing the friction between them. When fixing the knob, the greater friction allows the positioning head 40 to fit more firmly with the knob, effectively preventing the knob from loosening during processing or assembly. At the same time, the appropriate arc range (15° - 45°) ensures that the positioning head 40 does not get stuck when moving in the mounting cavity 31 due to excessive or insufficient arc, while maintaining a good fixing effect. This ensures the smooth operation of the knob fixture and reduces the probability of equipment failure.

[0031] In another embodiment of this utility model, such as Figures 1-4As shown, the inner wall of the mounting cavity 31 is provided with a limiting protrusion 311 extending axially, and the outer wall of the positioning head 40 is provided with a limiting groove 43 that slides with the limiting protrusion 311. Specifically, by providing a limiting protrusion 311 on the inner wall of the mounting cavity 31 and a limiting groove 43 that slides with it on the outer wall of the positioning head 40, precise guidance is provided for the movement of the positioning head 40 within the mounting cavity 31. This limiting structure design strictly restricts the positioning head 40 to move only in a straight line, effectively preventing the positioning head 40 from shaking or deviating during movement, and ensuring the accuracy of the engagement between the positioning head 40 and the knob; at the same time, precise linear movement ensures that the positioning head 40 can accurately reach the preset position each time the knob is fixed, improving the consistency and stability of the knob fixing, thereby improving the processing and assembly quality of the product; the sliding engagement between the limiting protrusion 311 and the limiting groove 43 can also withstand lateral forces to a certain extent, enhancing the stability and reliability of the overall structure of the knob fixture.

[0032] In another embodiment of this utility model, such as Figures 1-4 As shown, the mounting cavity 31 has an axial buffer cavity 312 inside, and a buffer spring is installed inside the buffer cavity to abut against the end of the positioning head 40. Specifically, the axial buffer cavity 312 and the buffer spring inside the mounting cavity 31 can provide a buffering effect when the positioning head 40 contacts the knob. When the positioning head 40 moves towards and contacts the knob under the drive of the drive motor 20 and the lead screw, the buffer spring can absorb the impact force generated by the instantaneous contact, avoiding damage to the positioning head 40 and the knob due to excessive impact force, effectively protecting the knob and the positioning head 40; at the same time, when releasing the knob, the buffering force provided by the buffer spring can make the positioning head 40 separate smoothly from the knob, preventing the knob from popping out or falling due to the sudden release process, ensuring the safety of operation; in addition, the presence of the buffer spring can also adapt to knobs of different sizes or shapes to a certain extent, increasing the applicability and flexibility of the knob fixture.

[0033] In another embodiment of this utility model, such as Figures 1-4 As shown, the fixing segment 41 is configured in a cylindrical shape. Specifically, the fixing segment 41 is configured in a cylindrical shape, and the cylinder has a regular geometric shape, which provides a uniform and stable fixing effect when fixed with the knob body. During the engagement with the knob, the cylindrical fixing segment 41 can fit tightly with the inner hole and other structures of the knob, effectively avoiding problems such as the knob not being securely fixed or excessive local stress caused by the irregular shape of the fixing segment 41; at the same time, the cylindrical shape is easy to process and manufacture, which can reduce production and manufacturing costs; in addition, the regular cylindrical shape makes it easier to achieve precise positioning and gripping in the automated assembly process, improving the automation level and production efficiency of the production process.

[0034] In another embodiment of this utility model, such as Figures 1-4 As shown, the surface of the positioning head 40 is coated with a lubricating coating. Specifically, coating the surface of the positioning head 40 with a lubricating coating can significantly reduce the frictional force when the positioning head 40 moves within the mounting cavity 31. The lower frictional force allows the positioning head 40 to move more smoothly under the drive of the drive motor 20 and the lead screw, reducing the load on the drive motor 20 and lowering the energy consumption of the equipment; at the same time, the reduced frictional force can also effectively reduce the wear between the positioning head 40 and the inner wall of the mounting cavity 31, extending the service life of the knob fixture; the lubricating coating can also prevent the surface of the positioning head 40 from rusting or corroding to a certain extent, ensuring the stable performance of the positioning head 40 and further improving the reliability and stability of the knob fixture.

[0035] In another embodiment of this utility model, such as Figures 1-4 As shown, the positioning head 40 is configured to be elastic. Specifically, the positioning head 40 is configured to be elastic, so that it can undergo a certain elastic deformation when in contact with the knob. This elastic characteristic allows the positioning head 40 to better adapt to knobs of different sizes or slightly different shapes. Even if the knob has certain manufacturing errors or dimensional deviations, the elastic positioning head 40 can still fit tightly with the knob through its own deformation, ensuring the effectiveness of the knob's fixation. At the same time, during the fixing and releasing of the knob, the elastic positioning head 40 can absorb the impact and vibration generated during the operation, reducing the impact on the knob and other components, and protecting the product and equipment. In addition, the elastic positioning head 40 can also reduce the noise generated by the rigid contact between the positioning head 40 and the knob to a certain extent, improving the working environment.

[0036] In another embodiment of this utility model, such as Figures 1-4 As shown, the drive motor 20 is a servo motor, and a shock-absorbing rubber pad is provided between the drive motor 20 and the fixed base 10. Specifically, using a servo motor as the drive motor 20 allows for precise control of the lead screw rotation, thereby achieving precise control of the position and speed of the positioning head 40. This enables the knob fixture to more accurately fix and release the knob, meeting the requirements of high-precision machining and assembly. Simultaneously, the shock-absorbing rubber pad between the drive motor 20 and the fixed base 10 effectively absorbs the vibration and noise generated during the operation of the drive motor 20. Reduced vibration prevents the positioning head 40 from shaking or the knob from loosening due to vibration transmission, ensuring the stability of the knob fixation; reduced noise improves the working environment and reduces the impact on operators; the shock-absorbing rubber pad also protects the drive motor 20 and the fixed base 10 to a certain extent, extending the service life of the equipment.

[0037] In another embodiment of this utility model, such as Figures 1-4As shown, the knob fixture also includes a position sensor, which is mounted on the mounting base 30 and used to detect the position of the positioning head 40. Specifically, by setting a position sensor in the knob fixture, the position information of the positioning head 40 can be detected accurately in real time. By obtaining the position of the positioning head 40, the operator or automated control system can promptly understand the working status of the knob fixture, determine whether the positioning head 40 has reached the preset position, and thus achieve precise control over the knob fixing and releasing process. When the position of the positioning head 40 deviates, the position sensor can promptly provide feedback so that the system can take corresponding adjustment measures to avoid product quality problems caused by inaccurate positioning.

[0038] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A knob jig characterized by, include: Fixed base; A drive motor, the body of which is mounted on the fixed base, and the output end of which is connected to a lead screw via a coupling; The mounting base is installed on the drive motor body at one end near the lead screw. The mounting base has a straight groove and a mounting cavity communicating with the straight groove. The lead screw passes through the straight groove and extends into the mounting cavity. A positioning head is installed in the mounting cavity and threadedly connected to the lead screw, and the positioning head is configured to move only in a straight line within the mounting cavity; The positioning head is configured with a fixing section that is fixed to the knob body and an inclined section that abuts against the concave edge of the knob.

2. The knob jig of claim 1, wherein: The inclined sections are configured to be symmetrically arranged on both sides of the positioning head.

3. The knob jig of claim 2, wherein: The inclined segment is provided with an arc-shaped surface, and the central angle corresponding to the arc range of the arc surface is 15°~45°.

4. The knob fixture according to any one of claims 1 to 3, characterized in that: The inner wall of the mounting cavity is provided with a limiting protrusion extending along its axial direction, and the outer wall of the positioning head is provided with a limiting groove that slides in cooperation with the limiting protrusion.

5. The knob fixture according to claim 4, characterized in that: The mounting cavity is provided with an axial buffer cavity, and a buffer spring is installed in the buffer cavity to abut against the end of the positioning head.

6. The knob fixture according to any one of claims 1 to 3, characterized in that: The fixed section is configured as a cylindrical shape.

7. The knob fixture according to any one of claims 1 to 3, characterized in that: The surface of the positioning head is coated with a lubricating coating.

8. The knob fixture according to any one of claims 1 to 3, characterized in that: The positioning head is configured to be flexible.

9. The knob fixture according to any one of claims 1 to 3, characterized in that: The drive motor is a servo motor, and a shock-absorbing rubber pad is provided between the drive motor and the fixed base.

10. The knob fixture according to any one of claims 1 to 3, characterized in that: The knob fixture also includes a position sensor, which is mounted on the mounting base and used to detect the position of the positioning head.

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