Flexible circuit board positioning jig

Abstract

A flexible circuit board positioning jig comprises a bottom plate, a placement plate used for positioning a flexible circuit board is detachably arranged on the bottom plate, a plurality of guide holes are formed in the placement plate, and a limiting pressing plate is movably connected to the upper portion of the placement plate; the limiting pressing plate is provided with a guide column in sliding fit with the guide hole, and the guide column is in clearance fit with the inner wall of the guide hole to achieve vertical guiding. A plurality of positioning pressure heads are arranged below the limiting pressure plate, the upper ends of the positioning pressure heads extend to form stepped plugs, elastic telescopic buckles are arranged on the side walls of the stepped plugs, positioning insertion holes matched with the stepped plugs are formed in the limiting pressure plate, and the stepped plugs can axially slide along the positioning insertion holes. And a detachable clamping structure is formed by the elastic telescopic buckle and the positioning insertion hole. According to the utility model, through the design of the multi-layer positioning structure, the elastic buckle, the clearance groove and the like, high-precision and high-efficiency positioning and processing of the flexible circuit board are realized; and the jig is more convenient to use and maintain due to the modular design and the quick dismounting function.

Description

Technical Field

[0001] This utility model relates to the field of flexible circuit board processing technology, and in particular to a flexible circuit board positioning fixture. Background Technology

[0002] Flexible printed circuit boards (FPCs) are widely used in electronic devices due to their thinness, lightness, and flexibility. However, their flexibility also makes them prone to deformation or displacement during processing, affecting manufacturing accuracy. Existing positioning fixtures mostly adopt a fixed structure, which has the following problems:

[0003] Poor adaptability: It cannot quickly replace positioning components of different specifications, making it difficult to adapt to the needs of multiple product models;

[0004] Low positioning accuracy: Traditional clamping structures are prone to causing uneven local stress on flexible circuit boards, leading to displacement or damage;

[0005] Complex operation: The multi-layered structure is cumbersome to assemble and has low efficiency in disassembly and maintenance.

[0006] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a flexible circuit board positioning fixture to solve the above problems.

[0007] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0008] To overcome the shortcomings of the prior art, the present invention discloses a flexible circuit board positioning fixture, which solves the problems of low positioning accuracy, complex operation and poor adaptability of the existing positioning fixtures, and improves the versatility and maintenance efficiency of the fixture through a detachable structure design.

[0009] This utility model discloses a flexible circuit board positioning fixture, including a base plate, on which a mounting plate for positioning the flexible circuit board is detachably mounted. The mounting plate has multiple guide holes, and a limiting pressure plate is movably connected above it. The limiting pressure plate has guide posts that slide with the guide holes, and the guide posts are clearance-fitted with the inner wall of the guide holes to achieve vertical guidance. Multiple positioning heads are provided below the limiting pressure plate, and the upper ends of the positioning heads extend to form stepped plugs. The side walls of the stepped plugs are provided with elastic telescopic buckles. The limiting pressure plate has positioning insertion holes that match the stepped plugs. The stepped plugs can slide along the axial direction of the positioning insertion holes and form a detachable snap-fit ​​structure with the positioning insertion holes through the elastic telescopic buckles.

[0010] Preferred technical solution: The inner wall of the positioning socket is circumferentially distributed with multiple clearance grooves to reduce the insertion and removal resistance of the stepped plug.

[0011] Preferred technical solution: The elastic telescopic buckle is a two-way locking structure, including two spring pins symmetrically arranged on both sides of the stepped plug. The extension and retraction direction of the spring pins is perpendicular to the axis of the stepped plug, which improves the locking stability.

[0012] Preferred technical solution: The base plate surface is provided with multiple fixture positioning pins, and the mounting plate is provided with positioning holes that are interference fit with the fixture positioning pins, forming a quick positioning connection between the base plate and the mounting plate.

[0013] Preferred technical solution: The mounting plate is also detachably provided with a shaping steel sheet, which is used to press the flexible circuit board onto the mounting plate to prevent it from deforming; the base plate is also provided with multiple steel sheet positioning pins, which can pass through the mounting plate and the shaping steel sheet in sequence to position and fix them.

[0014] Preferred technical solution: The base plate is also detachably provided with multiple product positioning pins, which pass through the positioning holes of the mounting plate, flexible circuit board and shaping steel sheet to form a multi-layer coaxial positioning structure.

[0015] Preferred technical solution: Limiting blocks are provided at the four corners of the base plate and the mounting plate to improve the positioning stability of the mounting plate.

[0016] Preferred technical solution: The lower end of the limiting pressure plate is detachably equipped with a guide block, and the guide post is set on the guide block for easy maintenance and replacement.

[0017] Preferred technical solution: A limiting pressure block is also provided below the limiting pressure plate. The limiting pressure block is used to press the mounting plate, flexible circuit board and shaping steel sheet together, further reducing the possibility of deformation of the flexible circuit board and improving processing accuracy.

[0018] Preferred technical solution: A QR code identification block is detachably provided on the base plate. When changing the flexible circuit board model, the QR code identification block is replaced simultaneously, improving work efficiency.

[0019] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0020] 1) Through the design of multi-layer positioning pins (fixture positioning pins, product positioning pins) and limit blocks, the precise positioning of components such as flexible circuit boards, mounting plates, and shaping steel sheets is ensured during the processing, reducing processing errors and improving product quality.

[0021] 2) The design of elastic telescopic buckles and clearance grooves makes it easier to disassemble and replace the positioning pressure head and the limiting pressure plate, adapting to the production needs of multiple varieties and small batches, and improving production efficiency;

[0022] 3) The design of the shaping steel sheet and limiting pressure block effectively prevents the flexible circuit board from deforming during processing, ensuring the flatness and processing accuracy of the circuit board;

[0023] 4) The base plate, mounting plate, limit pressure plate and other components adopt a modular design, which facilitates maintenance, replacement and upgrade, and reduces the cost of use and maintenance;

[0024] 5) By setting up QR code identification blocks, different models of flexible circuit board fixtures can be quickly identified and switched to meet the production needs of multiple varieties and small batches. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an exploded view of a flexible circuit board positioning fixture according to the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the bottom plate in this utility model;

[0028] Figure 3 This is a schematic diagram of the limiting pressure plate in this utility model;

[0029] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0030] In the attached diagrams above, 1. Base plate; 11. Fixture positioning pin; 12. Steel sheet positioning pin; 13. Product positioning pin; 14. Limiting block; 15. QR code identification block; 2. Mounting plate; 3. Limiting pressure plate; 31. Guide post; 32. Positioning insertion hole; 32a. Clearance groove; 33. Guide block; 34. Limiting pressure block; 4. Positioning pressure head; 41. Stepped plug; 42. Elastic telescopic buckle; 5. Shaping steel sheet. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0035] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Example:

[0038] like Figure 1As shown, this utility model discloses a flexible circuit board positioning fixture, including a base plate 1, a mounting plate 2, a limiting pressure plate 3, a positioning pressure head 4, and a shaping steel sheet 5. The main components of this utility model will be described in detail below:

[0039] like Figure 1 and Figure 2 As shown, the base plate 1 has multiple fixture positioning pins 11, steel sheet positioning pins 12 and product positioning pins 13 on its surface.

[0040] like Figure 1 and Figure 2 As shown, the mounting plate 2 has a positioning hole that is interference-fitted with the fixture positioning pin 11, forming a quick positioning connection between the base plate 1 and the mounting plate 2; the mounting plate 2 also has multiple guide holes.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, the limiting pressure plate 3 is located above the mounting plate 2, and its lower end is provided with a guide post 31 that slides with the guide hole. The guide post 31 is clearance-fitted with the inner wall of the guide hole to achieve vertical guidance; multiple positioning pressure heads 4 are provided below the limiting pressure plate 3.

[0042] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the upper end of the positioning head 4 extends to form a stepped plug 41. The side wall of the stepped plug 41 is provided with an elastic telescopic buckle 42. The limiting pressure plate 3 is provided with a positioning socket 32 ​​that matches the stepped plug 41. The stepped plug 41 can slide along the axial direction of the positioning socket 32 ​​and form a detachable snap-fit ​​structure with the positioning socket 32 ​​through the elastic telescopic buckle 42.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the shaping steel sheet 5 is detachably set on the upper end face of the mounting plate 2, and the two are positioned and fixed by the steel sheet positioning pin 12 passing through the mounting plate 2 and the shaping steel sheet 5 in sequence; at the same time, the product positioning pin 13 passes through the positioning holes of the mounting plate 2, the flexible circuit board and the shaping steel sheet 5 to form a multi-layer coaxial positioning structure, ensuring the positioning accuracy and flatness of the flexible circuit board.

[0044] The method and principle of this utility model are as follows: In use, the mounting plate 2 is fixed to the base plate 1 by the fixture positioning pin 11 to ensure precise positioning between the two; the flexible circuit board is placed on the mounting plate 2 and positioned by the product positioning pin 13; the shaping steel sheet 5 is fixed to the mounting plate 2 by the steel sheet positioning pin 12, and the shaping steel sheet 5 is used to press the flexible circuit board onto the mounting plate 2 to keep the flexible circuit board flat; the stepped plug 41 of the positioning pressure head 4 is inserted into the positioning insertion hole 32 of the limiting pressure plate 3, and the positioning pressure head 4 is fixedly installed by the elastic telescopic buckle 42; the limiting pressure plate 3 is installed, and the vertical movement of the limiting pressure plate 3 is ensured by the sliding cooperation between the guide post 31 and the guide hole on the mounting plate 2; the positioning pressure head 4 is used to press and fix the components on the flexible circuit board to ensure its stability during the production process.

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the inner wall of the positioning socket 32 ​​has multiple clearance grooves 32a distributed circumferentially to reduce friction and facilitate the insertion and removal of the stepped plug 41.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the elastic telescopic buckle 42 is a two-way locking structure, including two spring pins symmetrically arranged on both sides of the stepped plug 41. The extension and retraction direction of the spring pins is perpendicular to the axis of the stepped plug 41, ensuring the stability of the positioning head 4 during installation and disassembly.

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, limit blocks 14 are provided at the four corners of the base plate 1 and the mounting plate 2 to ensure the installation stability of the mounting plate 2.

[0048] like Figure 1 , Figure 2 and Figure 3 As shown, the lower end of the limiting pressure plate 3 is detachably provided with a guide block 33, and the guide post 31 is set on the guide block 33 to ensure the stability of the guide post 31.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, a limiting pressure block 34 is also provided below the limiting pressure plate 3, which is used to press the shaping steel sheet 5 to keep the mounting plate 2, the flexible circuit board and the shaping steel sheet 5 in a tight state.

[0050] like Figure 1 , Figure 2 and Figure 3As shown, a QR code identification block 15 is detachably provided on the base plate 1 for identifying the fixture model, which facilitates quick switching when processing different product models.

[0051] The flexible circuit board positioning fixture provided in this embodiment achieves efficient, accurate, and stable positioning of flexible circuit boards through modular design. Its simple structure and convenient operation make it suitable for the production and assembly processes of flexible circuit boards with high precision requirements. The fixture's reliability and versatility are further improved through designs such as elastic telescopic buckles and clearance slots.

[0052] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible circuit board positioning jig comprising a base plate (1), characterized in that: The bottom plate (1) is detachably provided with a setting plate (2) for positioning a flexible circuit board, the setting plate (2) is provided with a plurality of guide holes, and a limiting pressing plate (3) is movably connected above the setting plate (2); the limiting pressing plate (3) is provided with a guide column (31) in sliding fit with the guide hole, the guide column (31) is in clearance fit with the inner wall of the guide hole to realize vertical guidance; a plurality of positioning pressing heads (4) are arranged below the limiting pressing plate (3), the upper end of the positioning pressing head (4) extends to form a stepped plug (41), the side wall of the stepped plug (41) is provided with an elastic expansion buckle (42), a positioning insertion hole (32) matched with the stepped plug (41) is formed in the limiting pressing plate (3), the stepped plug (41) can slide axially along the positioning insertion hole (32), and the elastic expansion buckle (42) and the positioning insertion hole (32) form a detachable clamping structure.

2. The flexible circuit board positioning jig of claim 1, wherein: The inner wall of the positioning insertion hole (32) is circumferentially provided with a plurality of clearance grooves (32a).

3. The flexible circuit board positioning fixture of claim 1, wherein: The elastic expansion buckle (42) is a bidirectional locking structure, including two spring pins symmetrically arranged on both sides of the stepped plug (41), and the expansion direction of the spring pin is perpendicular to the axis of the stepped plug (41).

4. The flexible circuit board positioning fixture of claim 1, wherein: The surface of the bottom plate (1) is provided with a plurality of jig positioning pins (11), the setting plate (2) is provided with positioning holes in interference fit with the jig positioning pins (11), thereby forming quick positioning connection of the bottom plate (1) and the setting plate (2).

5. The flexible circuit board positioning fixture of claim 1, wherein: The setting plate (2) is also detachably provided with a shaped steel sheet (5), and the bottom plate (1) is also provided with a plurality of steel sheet positioning pins (12), the steel sheet positioning pins (12) can sequentially pass through the setting plate (2) and the shaped steel sheet (5) to position and fix the two.

6. The flexible circuit board positioning fixture of claim 1, wherein: The bottom plate (1) is also detachably provided with a plurality of product positioning pins (13), the product positioning pins (13) pass through the positioning holes of the setting plate (2), the flexible circuit board and the shaped steel sheet (5), thereby forming coaxial positioning of a multi-layer structure.

7. The flexible circuit board positioning fixture of claim 1, wherein: The bottom plate (1) and the setting plate (2) are provided with limiting blocks (14) at the corresponding positions of the four corners.

8. The flexible circuit board positioning fixture of claim 1, wherein: The lower end of the limiting pressing plate (3) is detachably provided with a guide block (33), and the guide column (31) is arranged on the guide block (33).

9. The flexible circuit board positioning fixture of claim 1, wherein: The lower end of the limiting pressing plate (3) is also provided with a limiting pressing block (34).

10. The flexible circuit board positioning fixture of claim 1, wherein: The bottom plate (1) is detachably provided with a two-dimensional code identification block (15).

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