Positioning structure and jig

Abstract

The present disclosure provides a positioning structure and jig. A positioning structure for acting on a positioning hole, the positioning structure comprising: an inner needle; an outer needle, which is a hollow structure with two open ends and is sleeved outside the inner needle, a first end of the outer needle being surrounded by a plurality of spaced apart elastic arms; the outer needle and the inner needle are configured such that when the outer needle rotates around the inner needle, the plurality of elastic arms are opened until they fit the positioning hole. The present application provides a positioning structure which only needs to provide a rotating force after inserting the positioning hole, and the elastic arms of the first end of the outer needle of the positioning structure can be opened until they completely fit the positioning hole of the plastic frame, realizing the complete center-to-center of the outer needle of the positioning structure and the positioning hole, solving the position deviation caused by the shaft hole matching problem during the bonding of the plastic frame, and greatly improving the positioning and bonding accuracy.

Description

Technical Field

[0001] This disclosure relates to the field of positioning technology, and more particularly to a positioning structure and fixture. Background Technology

[0002] Currently, the bonding of laptop casing components (A, C, D, etc.) to the plastic frame uses a traditional method of inserting locating pins into locating holes in the plastic frame, employing a shaft-hole fit. Typically, the locating pins on the bonding jig are 0.05mm smaller than the locating holes on the plastic frame. To prevent insertion problems when the locating pin's outer diameter is at its upper limit and the plastic frame's locating hole's is at its lower limit, the locating pin's outer diameter is generally required to be machined to the lower limit of the design value. As a result, when the locating pin is at its lower limit and the plastic frame's locating hole is at its upper limit, the plastic frame will have approximately 0.1mm of play on the bonding jig, causing misalignment during bonding. Furthermore, when the plastic frame has limiters, aesthetic features, or other functional structures, the resulting gaps and step-like issues become more pronounced. This problem is affected by the characteristics of the shaft-hole fit and the machining precision of the components, making it unavoidable with current solutions. Utility Model Content

[0003] This disclosure provides a positioning structure and fixture to at least solve one of the technical problems existing in the prior art.

[0004] In a first aspect, this application provides a positioning structure for acting on a positioning hole, the positioning structure comprising:

[0005] Inner needle;

[0006] The outer needle is a hollow structure with openings at both ends and is sleeved on the outside of the inner needle. The first end of the outer needle is surrounded by a plurality of spaced elastic arms. The outer needle and the inner needle are configured such that when the outer needle rotates around the inner needle, the plurality of elastic arms are spread open until they fit against the positioning hole.

[0007] In one embodiment, the first end of the inner needle is formed by connecting multiple first curved surfaces end to end, and at the connection points of these first curved surfaces, a step with a height difference is formed in the radial direction of the inner needle.

[0008] In one embodiment, the second end of the inner needle is configured as a limiting structure, which is used to connect to the fixture body so that the inner needle remains stationary when the outer needle rotates.

[0009] In one embodiment, the limiting structure is a groove formed at the second end of the inner needle.

[0010] In one embodiment, the thickness of the spring arm gradually decreases along the circumferential direction of the outer needle, so that the radial cross-section of the first end of the outer needle formed by the enclosing is a circular surface.

[0011] In one embodiment, when the outer needle is stationary, the thick end of the spring arm is positioned close to the step and the two at least partially overlap.

[0012] In one embodiment, the outer surface of the second end of the outer needle is further provided with a fixing part, which is used to connect to the main body of the fixture.

[0013] In one embodiment, the fixing portion is a protrusion extending outward from the outer surface of the second end of the outer needle, and the protrusions are distributed at intervals along the circumferential direction of the outer needle.

[0014] Secondly, this application provides a fixture, including a fixture body and a positioning structure as described in any of the above-described possible embodiments.

[0015] In one embodiment, the second end of the inner needle of the positioning structure is fixed to the main body of the fixture;

[0016] The second end of the outer pin of the positioning structure is fixedly connected to the rotary drive frame, which is rotatably mounted on the fixture body.

[0017] Compared with the prior art, the advantages of this application are as follows: 1) This application proposes a positioning structure that, after insertion into the positioning hole, only a rotational force is required to open the spring arm at the first end of the outer pin of the positioning structure until it is completely aligned with the positioning hole of the plastic frame. This achieves perfect center-to-center alignment between the outer pin of the positioning structure and the positioning hole, solving the positional offset caused by the shaft-hole fit problem during plastic frame bonding and greatly improving positioning and bonding accuracy. 2) The positioning structure of this application can be used in multiple models and types, and is not limited to use in only one project. Its applicability will reduce production costs.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0019] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0020] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0021] Figure 1 A schematic diagram of a positioning structure according to an embodiment of the present disclosure is shown;

[0022] Figure 2 Another structural schematic diagram of the positioning structure according to an embodiment of the present disclosure is shown;

[0023] Figure 3 A schematic diagram of another structural representation of the positioning structure according to an embodiment of the present disclosure is shown;

[0024] Figure 4 An exploded view of the positioning structure according to an embodiment of this disclosure is shown;

[0025] Figure 5 A schematic diagram of the positioning structure of this disclosure being positioned in the positioning hole is shown;

[0026] Figure 6 A schematic diagram of the positioning structure of this disclosure is shown when the spring arm is extended according to an embodiment of the present disclosure;

[0027] Figure 7 A cross-sectional view of the positioning structure of an embodiment of the present disclosure inserted into the positioning hole in the initial state is shown.

[0028] Figure 8 A schematic diagram of the positioning structure being mounted on the fixture body according to an embodiment of the present disclosure is shown.

[0029] The following are the labels in the diagram: 1-positioning structure, 11-inner needle, 12-outer needle, 111-first curved surface, 112-groove, 1111-step, 121-spring arm, 122-fixing part, 2-positioning hole, 3-fixture body, 31-inner needle fixing frame, 32-rotation drive frame. Detailed Implementation

[0030] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Currently, because the casings of laptops (components A, C, and D) are made of metal, such as aluminum, it's impossible to fabricate complex structures. Therefore, a plastic frame needs to be glued onto it to install other components. Currently, a jig is commonly used, where positioning pins on the jig align with positioning holes on the plastic frame for positioning, and then the plastic frame is glued to the metal casing (components A, etc.). However, this jig method can lead to mismatches and gaps between the positioning pins and holes, causing misalignment during plastic frame bonding and affecting component machining accuracy. Therefore, to improve positioning accuracy, this application provides a positioning structure.

[0032] Firstly, such as Figure 1 , Figure 5 As shown, this application provides a positioning structure 1 for acting on a positioning hole 2. The positioning structure 1 includes:

[0033] Inner needle 11;

[0034] The outer needle 12 is a hollow structure with openings at both ends and is sleeved on the outside of the inner needle 11. The first end of the outer needle 12 is surrounded by a plurality of spaced elastic arms 121. The outer needle 12 and the inner needle 11 are configured such that when the outer needle 12 rotates around the inner needle 11, the plurality of elastic arms 121 are stretched open until they fit into the positioning hole 2.

[0035] like Figure 2 As shown, in the initial state, the inner and outer needles fit together without any force between them (the outer surface of the inner needle and the inner surface of the outer needle can be in contact or have a gap. Of course, to keep the inner needle stationary when the outer needle rotates, a gap is preferred between them). The outer needle 12 is in a closed state, and its outer diameter is consistent with that of a traditional positioning post, facilitating insertion into the positioning hole 2. Figure 7 As shown, in the initial state, there is a gap between the positioning structure 1 and the positioning hole 2 of the plastic frame, making it easy for the positioning structure 1 to be inserted into the positioning hole 2 like a traditional positioning post.

[0036] When the first end of the positioning structure 1 is inserted into the positioning hole 2, it provides a rotational force to the outer needle 12. As the outer needle 12 continues to rotate around the inner needle 11 under force, the inner needle 11 slowly expands the spring arm 121 of the outer needle until it is completely fitted with the positioning hole 2. Figure 5 As shown, this ensures that the center of the positioning structure (especially the outer pin) and the positioning hole are aligned, improving positioning accuracy and ensuring that there is no misalignment when the plastic frame and the electronic device housing are bonded together.

[0037] For example, such as Figure 4 As shown in this application, the inner needle 11 has an elongated cylindrical structure in appearance. Since the inner needle is fixed, it can be formed by lost-wax casting or die casting to ensure its strength and dimensional precision.

[0038] For example, the outer needle 12 is a sleeve structure with openings at both ends. A cut is made at the head of the sleeve to make the head elastic, and its shape matches the inner needle structure. Therefore, the first end of the outer needle is formed by a plurality of elastic arms 121 spaced around it.

[0039] The outer pin 12 can be made of spring steel, ensuring high elasticity and high fatigue resistance, thus guaranteeing the lifespan of this positioning structure 1 under high-frequency use during operation. It can be made by solid casting or precision CNC machining. If precision CNC machining is used, a tool with a diameter <1mm must be customized.

[0040] For example, in this application, the positioning hole 2 can be a positioning hole on a plastic frame.

[0041] This application provides a positioning structure 1, including an inner needle 11 and an outer needle 12. The outer needle is sleeved outside the inner needle. The first end of the outer needle 12 is surrounded by multiple elastic arms 121 spaced apart, so that when the outer needle rotates around the inner needle, the elastic arms 121 can be opened to tightly fit the positioning hole 2, ensuring that the positioning structure 1 and the positioning hole 2 are 100% aligned, improving positioning accuracy, and thus avoiding misalignment when bonding the plastic frame to the shell. In addition, the positioning structure of this application is of significant use for plastic frames that need to be bonded, have some surface areas, have surface gap requirements, or are high-precision products.

[0042] This application proposes a positioning structure 1. After insertion into the positioning hole 2, only a rotational force is required to open the spring arm of the outer pin 12 of the positioning structure until it is completely aligned with the positioning hole 2 of the plastic frame. This achieves perfect center-to-center alignment between the outer pin and the positioning hole, solving the positional offset caused by the shaft-hole fit problem during plastic frame bonding, and greatly improving positioning and bonding accuracy. The same principle applies to locking assembly and other aspects, making it highly practical. The positioning structure 1 of this application can be used across multiple machine types and is not limited to a single project, thus reducing production costs due to its versatility.

[0043] Furthermore, since the positioning post structure 1 of this application consists of two parts, an inner pin and an outer pin, its outer diameter is slightly larger than that of a traditional positioning post. The corresponding positioning hole diameter on the plastic frame will reach 4 to 5 mm, which is not suitable for bonding parts with too small a plastic frame, thus preventing other series of problems caused by too small a bonding area.

[0044] The positioning structure of this application can be applied to electronic devices. Taking a laptop as an example, the positioning structure of this application is used to position the laptop shell (e.g., part A, part C, part D) when it is bonded to the plastic frame on it. After the two are bonded, the positioning structure 1 is removed and will not remain in the laptop.

[0045] In some embodiments, such as Figure 4 As shown, the first end of the inner needle 11 is formed by connecting multiple first curved surfaces 111 end to end, and at the connection position of these first curved surfaces 111, a step 1111 with a height difference is formed in the radial direction of the inner needle 11.

[0046] For example, such as Figure 4 As shown, the first curved surface 111 has three pieces, which are distributed in a fan-shaped manner and formed at the first end of the inner needle.

[0047] For example, the second end of the inner needle 11 is constructed as a limiting structure, which is used to connect to the jig body 3 so that the inner needle 11 remains stationary when the outer needle 12 rotates.

[0048] Furthermore, such as Figure 3-4 As shown, the limiting structure is a groove 112 formed at the second end of the inner needle. This groove 112 includes, but is not limited to, a cross groove. The groove 112 allows the inner needle 11 to be fixed on the fixture body 3, keeping the inner needle 11 stationary while the outer needle 12 rotates.

[0049] In some embodiments, such as Figure 4 As shown, the thickness of the spring arm 121 gradually decreases along the circumferential direction of the outer needle 12, so that the radial cross section of the first end of the outer needle 12 formed by the enclosing is a circular surface.

[0050] For example, since the first end of the inner needle 11 is formed by connecting multiple first curved surfaces 111 end to end, and the connection position of the multiple first curved surfaces forms a step 1111, after the outer needle 12 is sleeved on the inner needle 11, in order to ensure that there is no interaction force between the two in the initial state, and that the elastic arm of the outer needle can completely fit the positioning hole after being stretched, the thickness of the elastic arm 121 is set to gradually decrease along the circumferential direction of the outer needle, so that the radial cross section of the first end of the outer needle is a circular surface, thereby ensuring that the elastic arm of the outer needle can completely fit with the positioning hole when it is unfolded, and ensuring that there is no shaking between the positioning hole and the positioning structure.

[0051] For example, such as Figure 2 As shown, when the outer needle 12 is in a stationary state, the thick end 1211 of the spring arm 121 is positioned close to the step 1111 and the two at least partially overlap.

[0052] like Figure 6 As shown, when the outer needle is sleeved outside the inner needle, the thick end 1211 of the spring arm partially overlaps with the step, so that when the outer needle 12 rotates counterclockwise, the spring arm 121 of the outer needle can be opened up under the action of the inner needle until it is tightly attached to the inner surface of the positioning hole 2, thus ensuring positioning accuracy.

[0053] For example, such as Figure 4As shown, the outer surface of the second end of the outer needle 12 is also provided with a fixing part 122, which is used to connect to the fixture body 3.

[0054] Furthermore, the fixing part 122 is a protrusion extending outward from the outer surface of the second end of the outer needle 12, and the protrusions are distributed at intervals along the circumferential direction of the outer needle.

[0055] Secondly, such as Figure 8 As shown, this application also provides a fixture, including a fixture body 3 and the aforementioned positioning structure 1.

[0056] For example, the second end of the inner needle 11 of the positioning structure 1 is fixed to the main body of the fixture. Specifically, the limiting structure of the second end of the inner needle is fixed to the inner needle fixing bracket 31 of the main body of the fixture.

[0057] The second end of the outer pin 12 of the positioning structure 1 is fixedly connected to the rotary drive frame 32, which is rotatably mounted on the fixture body. Specifically, the second end of the outer pin 12 is fixed to the rotary drive frame 32 by the fixing part 122, and the rotary drive frame 32 is rotatably mounted on the fixture body 3, and the rotary drive frame can be electrically driven to rotate.

[0058] like Figure 7 As shown, in the initial state, the inner needle 11 and outer needle 12 of the positioning structure are fixed on the inner needle fixing frame 31 and the rotary drive frame 32 of the fixture body, respectively, and the first end of the positioning structure is inserted into the positioning hole 2 of the plastic frame. At this time, there is a gap between the outer wall of the positioning structure and the positioning hole.

[0059] During operation, the inner needle 11 remains stationary to ensure accurate centering. The head of the inner needle core can be extended and fixed to the template of the workpiece for limiting its position, preventing misalignment during rotation due to the thinness and weakness of the core. The rotary drive frame 32 on the fixture is electrically driven to rotate, providing a continuous force that can open the outer needle until it is completely in contact with the positioning hole 2 on the plastic frame. After it is opened, its outer diameter depends on the size of the positioning hole 2 on the plastic frame, exhibiting self-adaptability and simultaneously absorbing the adhesion misalignment problem caused by the size deviation of the positioning hole.

[0060] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0061] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] The terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0063] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and are not intended to 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 application.

[0064] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A positioning structure for acting on a positioning hole, characterized in that: The positioning structure includes: Inner needle; The outer needle is a hollow structure with openings at both ends and is sleeved on the outside of the inner needle. The first end of the outer needle is surrounded by a plurality of spaced elastic arms. The outer needle and the inner needle are configured such that when the outer needle rotates around the inner needle, the plurality of elastic arms are spread open until they fit against the positioning hole.

2. The positioning structure according to claim 1, characterized in that: The first end of the inner needle is formed by multiple first curved surfaces connected end to end, and at the connection points of these first curved surfaces, a step with a height difference is formed in the radial direction of the inner needle.

3. The positioning structure according to claim 2, characterized in that: The second end of the inner needle is configured as a limiting structure, which is used to connect to the main body of the fixture so that the inner needle remains stationary when the outer needle rotates.

4. The positioning structure according to claim 3, characterized in that: The limiting structure is a groove opened at the second end of the inner needle.

5. The positioning structure according to claim 2, characterized in that: The thickness of the spring arm gradually decreases along the circumferential direction of the outer needle, so that the radial cross-section of the first end of the outer needle formed by the enclosing is a circular surface.

6. The positioning structure according to claim 5, characterized in that: When the outer needle is stationary, the thick end of the spring arm is positioned close to the step and the two at least partially overlap.

7. The positioning structure according to claim 1, characterized in that: The outer surface of the second end of the outer needle is also provided with a fixing part, which is used to connect to the main body of the fixture.

8. The positioning structure according to claim 7, characterized in that: The fixing part is a protrusion extending outward from the outer surface of the second end of the outer needle, and the protrusions are distributed at intervals along the circumferential direction of the outer needle.

9. A jig, comprising a jig body, characterized in that: It also includes the positioning structure described in any one of claims 1-8.

10. The fixture according to claim 9, characterized in that: The second end of the inner needle of the positioning structure is fixed to the main body of the fixture; The second end of the outer pin of the positioning structure is fixedly connected to the rotary drive frame, which is rotatably mounted on the fixture body.

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