Detachable long needle bean clip with limiting function
The bean clip, with its split handle, dovetail joint structure, and limiting post design, solves the problems of pin misalignment and wear in existing bean clips, improving the stability and durability of the pins and reducing the difficulty of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-14
AI Technical Summary
Existing bean clips have high structural stability, lack a limiting mechanism, and have limited needle functionality, leading to needle misalignment, bean misalignment, tool wear, and inconvenient maintenance.
It adopts a split handle and dovetail joint structure, combined with limit post design and elastic material to achieve precise closure and limit of the clamping pin. The modular design supports quick replacement of clamping pins and is compatible with different Perler beads sizes.
It improves the stability and durability of the clamping pins, reduces the difficulty of operation, enhances the flexibility and durability of the bean clip, and extends its service life.
Smart Images
Figure CN224488806U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of handicraft tool design, and in particular to a detachable long pin bean clip with a limiting mechanism. Background Technology
[0002] Perler bead crafts, a popular art form, relies on precise tool design to create complex patterns. Early Perler bead clamps often used a fixed structure, their core function being to pierce the beads with a needle and fix them to a template, then iron them together. As Perler bead crafts have become more widespread, users have placed higher demands on the flexibility, durability, and ease of use of tools. For example, current Perler bead clamps generally use an integrated handle design, with the clamp needle and handle fixed by welding or snap-fit, making disassembly and maintenance difficult; the needles are mostly straight-cylinder, lacking dynamic adjustment capabilities for bead placement; and most tools are not optimized for different bead sizes (such as large and small beans). In recent years, some improved Perler bead clamps have attempted to introduce adjustable clamp needles or modular structures, but due to the lack of a limiting mechanism, problems such as clamp needle misalignment and bead misalignment still exist in actual use, affecting pattern quality and operational efficiency.
[0003] The integrated handle design means that the clips cannot be replaced individually after wear, and long-term use can easily lead to breakage due to stress concentration, increasing user maintenance costs. Traditional Perler bead clips lack a limiting design for the clips, and the needles are prone to displacement due to hand tremors or improper operation when piercing the beads. This error can significantly reduce the quality of the finished product, especially in the creation of intricate patterns.
[0004] Therefore, a bead clip with a split handle and sufficient limiting function urgently needs to be studied. Utility Model Content
[0005] This application provides a detachable long needle bean clip with a limiting mechanism to solve the problems of high structural stability, lack of limiting mechanism and single needle function in existing bean clip technology.
[0006] This application provides a detachable long pin bean clip with limiting function, including a handle and a clamping pin. The handle is a split part, divided into a negative plate and a positive plate. The negative plate has a splicing platform with a groove. The negative plate has a limiting post one and a limiting post two. The side of the negative plate away from the splicing platform has an installation hole. The positive plate has a splicing platform with a connecting tenon. The side of the positive plate has a logo area. The side of the positive plate away from the splicing platform has an installation hole.
[0007] The needle clamp includes a needle body, which fits into a mounting hole, and a needle tip is provided at the end of the needle body.
[0008] As an improvement, the groove has a trapezoidal cross-section, and the connecting tenon has an inverted trapezoidal cross-section. The groove and the connecting tenon fit together, forming a dovetail joint. When they are connected, the dovetail joint can restrict the freedom of the female and male plates and prevent them from separating.
[0009] As an improvement, neither the groove nor the connecting tenon penetrates the splicing platform. When the groove and the connecting tenon are connected, the splicing platforms of the female plate and the male plate close to form a whole. When the female plate and the male plate cannot move up, down, left, or right, the closed splicing platform becomes a connecting key that provides springback force.
[0010] As an improvement, the edges of both the negative plate and the positive plate are rounded, which prevents chafing during use and improves comfort.
[0011] As an improvement, the first limiting post is located at the end of the female plate near the mounting hole, and the second limiting post is located between the first limiting post and the splicing platform. The two limiting posts can provide sufficient limiting to prevent the female plate and the male plate from closing too close, thereby causing the needle to deform.
[0012] As an improvement, the height of the first limiting post is smaller than that of the second limiting post. The tops of both the first and second limiting posts are hemispherical structures, which can leave a margin. Since the handle is made of elastic material, the limiting posts can also provide sufficient limitation when deformation occurs.
[0013] As an improvement, the mounting hole is a cylindrical hole with an angle between the central axis of the mounting hole and the surface of the handle. The mounting holes are symmetrically distributed on the female and male plates, and the angle is acute. The angle structure can ensure that the needle can be engaged without an excessively large angle when the female and male plates are closed.
[0014] As an improvement, the needle is frustum-shaped, with the diameter of the frustum-shaped base of the needle equal to the diameter of the needle body. An interference fit is used between the needle body and the mounting hole to prevent the needle from slipping out during use.
[0015] As an improvement, the handle is made of an elastic material, which ensures that the male and female plates can be pressed together by fingers when assembled. The male and female plates themselves are thick at both ends and thin in the middle, and the middle section can be deformed with less force.
[0016] As an improvement, when the female plate and the male plate are closed, the first limiting post and the second limiting post abut against the surface of the male plate, the needle tips of the two clamping needles abut against each other. This structure can prevent the clamping needles from deforming after long-term use.
[0017] Compared with existing technologies, the advantages of this utility model are as follows: This utility model achieves precise closure and positioning of the female and male plates through a split handle and dovetail joint structure. Combined with the stepped positioning design of limiting post one and limiting post two, it effectively prevents the clamping pin from deforming due to excessive closure. The handle, made of elastic material, combined with its structure that is thicker at both ends and thinner in the middle, reduces the force required for operation and improves ergonomics. The frustum-shaped pin and the interference fit pin body ensure clamping stability and prevent loosening or detachment even after long-term use. The modular design supports quick pin replacement, adapting to different bead sizes, significantly improving the tool's durability and functionality. Attached Figure Description
[0018] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.
[0019] Figure 1 A schematic diagram of the split-state structure provided for an embodiment of this application;
[0020] Figure 2 A three-dimensional view of the split state provided for an embodiment of this application;
[0021] Figure 3 A cross-sectional view of section AA provided for an embodiment of this application;
[0022] Figure 4 A schematic diagram of the combined state structure provided for an embodiment of this application;
[0023] Figure 5 A three-dimensional view of the combined state provided for an embodiment of this application;
[0024] Figure 6 A BB cross-sectional view provided for an embodiment of this application;
[0025] Figure 7 A schematic diagram of the handle structure provided for an embodiment of this application;
[0026] Figure 8 A CC cross-sectional view provided for an embodiment of this application.
[0027] The components are: 1. Handle; 11. Yin plate; 12. Yang plate; 13. Splicing platform; 14. Groove; 15. Limiting post one; 16. Limiting post two; 17. Mounting hole; 18. Connecting tenon; 19. Logo area; 2. Needle clamp; 21. Needle body; 22. Needle head. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0030] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.
[0032] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0033] like Figures 1-8 A detachable long pin bean clip with limiting function includes a handle 1 and a clamping pin 2. The handle 1 is a split part, divided into a negative plate 11 and a positive plate 12. The negative plate 11 is provided with a splicing platform 13, and the splicing platform 13 is provided with a groove 14. The negative plate 11 is provided with a limiting post 15 and a limiting post 2 16. The side of the negative plate 11 away from the splicing platform 13 is provided with a mounting hole 17. The positive plate 12 is provided with a splicing platform 13, and the splicing platform 13 is provided with a connecting tenon 18. The side of the positive plate 12 is provided with a logo area 19. The side of the positive plate 12 away from the splicing platform 13 is provided with a mounting hole 17.
[0034] The clamp needle 2 includes a needle body 21, which is fitted with a mounting hole 17, and a needle tip 22 is provided at the end of the needle body 21.
[0035] As an improvement, the groove 14 has a trapezoidal cross-section, and the connecting tenon 18 has an inverted trapezoidal cross-section. The groove 14 and the connecting tenon 18 fit together. This structure is a dovetail joint, which can restrict the degrees of freedom of the female plate 11 and the male plate 12 when they are connected to each other, and prevent them from separating.
[0036] As an improvement, neither the groove 14 nor the connecting tenon 18 penetrates the splicing platform 13. When the groove 14 and the connecting tenon 18 are connected, the splicing platform 13 of the female plate 11 and the male plate 12 closes to form a whole. When the female plate 11 and the male plate 12 cannot move up, down, left, or right, the closed splicing platform 13 becomes a connecting key that provides rebound force.
[0037] As an improvement, the edges of both the negative plate 11 and the positive plate 12 are rounded, which can prevent chafing during use and improve comfort.
[0038] As an improvement, the first limiting post 15 is located at one end of the female plate 11 near the mounting hole 17, and the second limiting post 16 is located between the first limiting post 15 and the splicing platform 13. The two limiting posts can provide sufficient limiting to prevent the female plate 11 and the male plate 12 from closing too close, thereby causing the needle 22 to deform.
[0039] As an improvement, the height of the first limiting post 15 is smaller than that of the second limiting post 16. The tops of both the first limiting post 15 and the second limiting post 16 are hemispherical structures. The hemispheres can leave a margin. Since the handle 1 is made of elastic material, the limiting posts can also provide sufficient limitation when deformation occurs.
[0040] As an improvement, the mounting hole 17 is a cylindrical hole with an angle between the central axis of the mounting hole 17 and the surface of the handle 1. The mounting holes 17 are symmetrically distributed on the female plate 11 and the male plate 12, and the angle is an acute angle. The angle structure can ensure that the needle 22 can be abutted without the angle being too large when the female plate 11 and the male plate 12 are closed.
[0041] As an improvement, the needle 22 is frustum-shaped, and the diameter of the frustum-shaped base of the needle 22 is equal to the diameter of the needle body 21. An interference fit is used between the needle body 21 and the mounting hole 17 to prevent the needle 2 from coming out during use.
[0042] As an improvement, the handle 1 is made of an elastic material. The elastic material ensures that the female plate 11 and the male plate 12 can be pressed together by fingers when assembled. The structure of the female plate 11 and the male plate 12 is that it is thick at both ends and thin in the middle. The middle section can be deformed with less force.
[0043] As an improvement, when the negative plate 11 and the positive plate 12 are closed, the limiting post 15 and the limiting post 16 together abut against the surface of the positive plate 12, the needle tips 22 of the two clamping needles 2 abut against each other. This structure can prevent the clamping needles 2 from deforming after long-term use.
[0044] Example: Working process and principle of a detachable long pin bean clip with limiting mechanism
[0045] 1. Overall structure and component functions of the equipment
[0046] This embodiment, based on the technical solution in the claims, elaborates on the working process and principle of the equipment. The equipment consists of the following core components:
[0047] Handle 1: It is divided into a negative plate 11 and a positive plate 12, and is made of elastic material such as silicone or elastic plastic. The structure design of being thick at both ends and thin in the middle facilitates deformation.
[0048] Splicing platform 13: Located in the connection area between the female plate 11 and the male plate 12, it is closed by the groove 14 and the connecting tenon 18.
[0049] Groove 14 and connecting tenon 18: The cross-section of groove 14 is trapezoidal, and the connecting tenon 18 is an inverted trapezoid. The two form a dovetail joint structure, which restricts the separation of the female plate 11 and the male plate 12.
[0050] Limiting post 15 and limiting post 26: Limiting post 15 is close to the end of the mounting hole 17 and is less tall than limiting post 26. Both of them have a hemispherical structure at the top, which is used to limit the excessive deformation when the female plate 11 and the male plate 12 are closed.
[0051] Mounting hole 17: Cylindrical hole, with its central axis forming an acute angle with the surface of handle 1, symmetrically distributed on the female plate 11 and the male plate 12, used to mount the clamping pin 2.
[0052] Needle clamp 2: includes needle body 21 and needle head 22. Needle body 21 is interference-fitted with mounting hole 17. Needle head 22 is frustoconical and the diameter of the bottom surface is equal to the diameter of needle body 21.
[0053] 2. Work Process and Principles
[0054] Step 1: Assemble handle 1
[0055] Operation: Align the female plate 11 with the male plate 12 so that the groove 14 engages with the tenon 18. Due to the trapezoidal cross-section characteristics of the dovetail joint structure, the groove 14 of the female plate 11 and the tenon 18 of the male plate 12 are tightly engaged during connection, preventing them from separating.
[0056] Principle: The trapezoidal cross-section groove 14 and the inverted trapezoidal connecting tenon 18 form a mechanical lock, allowing the female plate 11 and the male plate 12 to slide within a limited range along the plane of the splicing platform 13, preventing them from separating in the vertical direction.
[0057] Step 2: Close handle 1 and limit it.
[0058] Operation: Press the two ends of the handle 1, the female plate 11 and the male plate 12, inward to close the splicing platform 13 by utilizing the deformation of the elastic material. During the closing process, the first limiting post 15 and the second limiting post 16 abut against the surface of the male plate 12 in sequence.
[0059] principle:
[0060] Limiting post 15: Due to its low height, it first contacts the male plate 12, limiting the female plate 11 from moving too close to the male plate 12, and preventing the needle tip 22 of the clamping needle 2 from deforming due to excessive compression.
[0061] Limiting post 2 16: It is relatively high and will completely abut against the male plate 12, further locking the relative position of the female plate 11 and the male plate 12.
[0062] Hemispherical top design: Allows the limiting post to finely adjust the contact area when the elastic material deforms, avoiding damage to components due to rigid collisions.
[0063] Step 3: Installation and positioning of clamp pin 2
[0064] Operation: Insert the needle body 21 of the clamp needle 2 into the mounting hole 17 and fix it with an interference fit. Since the central axis of the mounting hole 17 forms an acute angle with the surface of the handle 1, the needle tip 22 naturally tilts inward in the closed state and eventually abuts against the needle tip 22 of the clamp needle 2 on the other side.
[0065] principle:
[0066] Angle design: The angle of the mounting hole 17 ensures that the needle 22 can be aligned without large-angle rotation when the female plate 11 and the male plate 12 are closed, reducing the difficulty of operation.
[0067] Interference fit: The interference between the needle body 21 and the mounting hole 17 is, for example, 0.05 mm, to ensure that the clamp needle 2 is not easy to loosen or come out during frequent use.
[0068] Needle tip 22 abutting: The frustum-shaped design of the two needle tips 22 has a base diameter equal to the diameter of the needle body 21, so that they are in close contact in the closed state, providing a stable clamping force and preventing the clamp needle 2 from bending or deforming due to long-term use under external force.
[0069] Step 4: Perler bean operation
[0070] Procedure: Place the bead on the raised part of the template with tweezers, then pierce the bead with the needle 22 of the clamping needle 2 and fix its position, then close the handle 1 to align the needle 22.
[0071] principle:
[0072] Elastic material deformation: When handle 1 is pressed, the middle section undergoes slight deformation due to the elastic material properties, reducing the required pressing force and improving operating comfort.
[0073] Synergistic effect of limiting structure: The dual limiting of limiting post 15 and limiting post 26 ensures the axial stability of clamping needle 2 and prevents the needle 22 from deviating when piercing the bead.
[0074] Needle 22 design optimization: The tapered end of the frustum-shaped needle 22 reduces puncture resistance, and the bottom diameter is consistent with the needle body 21 to prevent the beads from slipping off.
[0075] Step 5: Disassembly and Maintenance
[0076] Operation: Pull outwards the female plate 11 and male plate 12 at both ends of the handle to separate the splicing table 13, and then replace the worn clamping pin 2 or clean the parts.
[0077] principle:
[0078] Dovetail separation: When separating the trapezoidal groove 14 and the inverted trapezoidal connecting tenon 18, they need to overcome mechanical friction in a specific direction.
[0079] Modular design: The split handle 1 allows for individual replacement of the clamp pin 2 or cleaning of the splicing table 13, extending the service life of the equipment.
[0080] 3. Key Technology Verification and Parameter Description
[0081] Elastic material properties: The recommended Shore hardness for silicone material is 40-50A to ensure moderate deformation recovery force and rebound time ≤0.5s.
[0082] Dovetail fit tolerance: The tolerance of the trapezoidal cross section of the groove 14 and the connecting tenon 18 is controlled within ±0.02mm to ensure closure stability.
[0083] Needle 22 dimensions: The diameter of the frustum-shaped base is the same as the diameter of the needle body 21, for example, 2.0 mm, and the taper angle is 30° to optimize puncture efficiency.
[0084] Mounting hole 17 angle: The recommended angle between the central axis and the surface of handle 1 is 5° to ensure that the needle 22 naturally abuts when closed.
[0085] 4. Summary of Technical Results
[0086] This embodiment solves the problems of loose clamping needles, bead misalignment, and inconvenient tool maintenance in traditional bead clamps through innovative designs such as dovetail tenon structure, double limiting posts, angled mounting holes 17, and frustum-shaped needles 22. Reviewers can directly manufacture bead clamp devices with closed limiting, elastic deformation, and high-precision clamping functions based on the above component numbers and parameters.
[0087] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A detachable long pin bean clip with limiting function, comprising a handle (1) and a clamping pin (2), characterized in that: The handle (1) is a split part, consisting of a female plate (11) and a male plate (12). The female plate (11) is provided with a splicing platform (13), and the splicing platform (13) is provided with a groove (14). The female plate (11) is provided with a limiting post one (15) and a limiting post two (16). The side of the female plate (11) away from the splicing platform (13) is provided with an installation hole (17). The male plate (12) is provided with a splicing platform (13), and the splicing platform (13) is provided with a connecting tenon (18). The side of the male plate (12) is provided with a logo area (19). The side of the male plate (12) away from the splicing platform (13) is provided with an installation hole (17). The clamping needle (2) includes a needle body (21), which is fitted with a mounting hole (17), and a needle tip (22) is provided at the end of the needle body (21).
2. The detachable bean-shaped clip with limiting long pin as described in claim 1, characterized in that: The groove (14) has a trapezoidal cross-section, and the connecting tenon (18) has an inverted trapezoidal cross-section. The groove (14) and the connecting tenon (18) fit together.
3. The detachable long pin bean clip with limiting function according to claim 2, characterized in that: Neither the groove (14) nor the connecting tenon (18) penetrates the splicing platform (13). When the groove (14) and the connecting tenon (18) are connected, the splicing platform (13) of the negative plate (11) and the positive plate (12) closes to form a whole.
4. The detachable long pin bean clip with limiting function according to claim 1, characterized in that: The edges of both the negative plate (11) and the positive plate (12) are rounded.
5. The detachable bean-shaped clip with limiting long pin as described in claim 1, characterized in that: The first limiting post (15) is located at one end of the negative plate (11) near the mounting hole (17), and the second limiting post (16) is located between the first limiting post (15) and the splicing platform (13).
6. The detachable long pin bean clip with limiting function according to claim 5, characterized in that: The height of the first limiting post (15) is less than that of the second limiting post (16), and the tops of both the first limiting post (15) and the second limiting post (16) are hemispherical structures.
7. The detachable long pin bean clip with limiting function according to claim 1, characterized in that: The mounting hole (17) is a cylindrical hole. The central axis of the mounting hole (17) has an angle with the surface of the handle (1). The mounting holes (17) are symmetrically distributed on the female plate (11) and the male plate (12).
8. The detachable long pin bean clip with limiting function according to claim 1, characterized in that: The needle (22) is frustum-shaped, and the diameter of the frustum-shaped base of the needle (22) is equal to the diameter of the needle body (21). The needle body (21) and the mounting hole (17) are fitted with an interference fit.
9. The detachable long pin bean clip with limiting function according to claim 1, characterized in that: The handle (1) is made of elastic material.
10. The detachable long pin bean clip with limiting function according to claim 1, characterized in that: When the negative plate (11) and the positive plate (12) are closed, the limiting post one (15) and the limiting post two (16) abut against the surface of the positive plate (12), and the needles (22) of the two clamping needles (2) abut against each other.