High-pressure-bearing lantern rivet
By designing gradient expansion grooves and triangular reinforcing ribs in the lantern rivets, the problem of traditional lantern rivets being prone to deformation and loosening under high loads is solved, achieving high pressure resistance and anti-slip effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional lantern rivets are prone to deformation or breakage due to local overload under high load conditions, and the rivet head structure is easy to loosen, which cannot meet the high pressure requirements.
The expansion sleeve was designed with a gradually changing expansion groove depth and spacing structure, and triangular reinforcing ribs were added. Notches and anti-slip textures were also set at the connection between the mandrel and the rod to achieve uniform expansion of the expansion sleeve and enhance the deformation resistance and anti-slip performance of the nail head.
By using a gradient design of expansion groove depth and spacing, the contact area is increased and stress is dispersed, which improves the load-bearing capacity and anti-slip performance of the lantern rivets and ensures the reliability of the connection.
Smart Images
Figure CN224093660U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lantern rivet technical field, specifically to a high pressure bearing lantern rivet. BACKGROUND
[0002] Traditional lantern rivet is usually composed of a core, an expansion sleeve and a mandrel, and its working principle is as follows: the mandrel is pulled by external force, so that the head of the core extrudes the expansion sleeve, prompting the expansion sleeve to expand outward to form a lantern structure, thereby fixing the connected parts.
[0003] The expansion groove of the traditional expansion sleeve is uniform in depth and spacing, resulting in a single expansion form during expansion, limited contact area with the base, and stress concentration in the middle or end of the expansion sleeve, which is prone to deformation or fracture due to local overload, and cannot meet the pressure bearing requirements in high load scenarios.
[0004] In addition, the traditional rivet cap is a flat structure, lacks stress dispersion design, and is prone to indentation or distortion under axial load; at the same time, the friction between the flat surface and the contact surface is small, and may loosen under the action of vibration or alternating load, affecting the connection reliability, so a high pressure bearing lantern rivet needs to be developed. SUMMARY
[0005] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.
[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:
[0007] A high pressure bearing lantern rivet, comprising a core, an expansion sleeve, a mandrel and a reinforcing rib:
[0008] The core is in a cylindrical structure, comprising a head and a rod, the head is located at one end of the rod and is coaxially arranged with the rod;
[0009] The expansion sleeve is in a hollow shape, and is sleeved on the outside of the rod, one end of the expansion sleeve is adjacent to the head, the other end is away from the head and fixed with a cap, the inner and outer diameters of the expansion sleeve gradually increase from the cap to the head, the outer circumferential surface of the expansion sleeve is provided with a plurality of expansion grooves distributed in the circumferential direction, the expansion grooves extend from the cap to the head but do not penetrate the expansion sleeve, the depth of the expansion grooves gradually decreases from the cap to the head, and the spacing between the adjacent expansion grooves gradually increases from the cap to the head;
[0010] The mandrel is fixed at the end of the rod part far from the head part, for extruding the expansion sleeve when the mandrel is subjected to tension, and then expanding the expansion sleeve to form a lantern structure along the expansion groove.
[0011] The plurality of reinforcing ribs are arranged on the side of the nail cap close to the expansion sleeve and along the radial direction of the nail cap.
[0012] As a preferred scheme of the lantern rivet with high pressure bearing, the outer diameter of the head part is larger than the outer diameter of the rod part, the outer edge of the head part is smooth, and the outer diameter of the head part is larger than the inner diameter of the expansion sleeve.
[0013] As a preferred scheme of the lantern rivet with high pressure bearing, a notch is arranged at the connection between the mandrel and the rod part, the notch is arranged around the circumference of the mandrel, and the notch is located at the inner side of the expansion sleeve.
[0014] As a preferred scheme of the lantern rivet with high pressure bearing, the mandrel is provided with anti-skid lines at the position far from the rod body of the rod part.
[0015] As a preferred scheme of the lantern rivet with high pressure bearing, the plurality of reinforcing ribs are arranged around the expansion sleeve at equal intervals, the cross section of the reinforcing rib is triangular, and the height of the reinforcing rib gradually decreases along the direction from the nail cap to the head part.
[0016] The lantern rivet with high pressure bearing has the following advantages: 1. The gradual change of the depth and interval of the expansion groove realizes the step-by-step expansion of the expansion sleeve, increases the contact area and disperses the stress;
[0017] 2. The triangular reinforcing rib is arranged on the side of the nail cap facing the expansion sleeve, which improves the anti-deformation ability and anti-skid performance of the nail cap. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the present application will be described in detail below in combination with the drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Wherein:
[0019] Figure 1 is a structural schematic view of the present application;
[0020] Figure 2 is a structural schematic view of the present application Figure 1 is a structural schematic view of the present application from the side view direction;
[0021] Figure 3The utility model discloses a structure schematic drawing of nail core and mandrel.
[0022] Figure 4 The utility model discloses a structure schematic drawing of expansion sleeve and reinforcing rib.
[0023] In the drawing: nail core 100, head 101, rod portion 102, expansion sleeve 200, nail cap 201, expansion groove 202, mandrel 300, notch 301, anti -slip 302, reinforcing rib 400, DETAILED DESCRIPTION
[0024] In order to make the above -mentioned purpose, feature and advantage of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below with the accompanying drawings.
[0025] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description, and those skilled in the art can make similar extension without violating the connotation of the utility model, therefore the utility model is not limited by the following disclosed specific embodiment.
[0026] Secondly, the utility model is described in detail in conjunction with the schematic diagram, when the embodiment of the utility model is described in detail, for easy to explain, the section view of the device structure will be partially enlarged without general proportion, and the schematic diagram is only an example, which should not limit the scope of the utility model protection here. In addition, three-dimensional spatial dimensions of length, width and depth should be contained in actual manufacture.
[0027] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiment of the utility model will be described in further detail below with the accompanying drawings.
[0028] Please refer to Figures 1-4 , it is the structure schematic diagram of the embodiment of the utility model of high pressure lantern rivet, please refer to Figures 1-4 , a high pressure lantern rivet is introduced in detail.
[0029] A high pressure lantern rivet, including nail core 100, expansion sleeve 200, mandrel 300 and reinforcing rib 400, its characterized in that:
[0030] The nail core 100 is columnar structure, including head 101 and rod portion 102, the head 101 is located at one end of rod portion 102 and is coaxially arranged with rod portion 102;
[0031] The expansion sleeve 200 is in a hollow shape, sleeved on the outer side of the rod part 102, one end of the expansion sleeve 200 is adjacent to the head part 101, the other end is away from the head part 101 and fixed with the nail cap 201, the inner and outer diameters of the expansion sleeve 200 gradually expand from the nail cap 201 to the head part 101, the outer peripheral surface of the expansion sleeve 200 is provided with a plurality of expansion grooves 202 distributed in the circumferential direction, the expansion grooves 202 extend from the nail cap 201 to the head part 101 but do not penetrate the expansion sleeve 200, the depth of the expansion groove 202 gradually decreases from the nail cap 201 to the head part 101, and the spacing between adjacent expansion grooves 202 gradually increases from the nail cap 201 to the head part 101; the gradual change of the depth and spacing of the expansion groove 202 makes the expansion sleeve 200 form a stepped expansion during the expansion process, further improving the pressure bearing capacity and contact area;
[0032] The mandrel 300 is fixed at one end of the rod part 102 away from the head part 101, for extruding the expansion sleeve 200 when the mandrel 300 is subjected to tension, and then expanding the expansion sleeve 200 outward along the expansion groove 202 to form a lantern-shaped structure; the expansion groove 202 of the expansion sleeve 200 is designed to uniformly expand to form a lantern shape when subjected to force, increasing the contact area with the base;
[0033] A plurality of the reinforcing ribs 400 are arranged on the side of the nail cap 201 close to the expansion sleeve 200, and are arranged along the radial direction of the nail cap 201, the plurality of reinforcing ribs 400 are arranged around the expansion sleeve 200 at equal intervals, the cross section of the reinforcing rib 400 is triangular, and the height of the reinforcing rib 400 gradually decreases from the nail cap 201 to the head part 101, the triangular cross section of the reinforcing rib 400 improves the anti-deformation ability of the nail cap 201, and also improves the anti-slip ability of the nail cap 201 with the contact surface;
[0034] Further, the outer diameter of the head part 101 is greater than the outer diameter of the rod part 102, the outer edge of the head part 101 is smooth, and the outer diameter of the head part 101 is greater than the inner diameter of the expansion sleeve 200, so as to ensure that the head part 101 can extrude the expansion sleeve 200 when pulled by the mandrel 300;
[0035] Further, a notch 301 is arranged at the connection between the mandrel 300 and the rod part 102, the notch 301 is arranged around the mandrel 300 in the circumferential direction, and the notch 301 is located at the inner side of the expansion sleeve 200; when the head part 101 is extruded by the mandrel 300 under tension, the expansion sleeve 200 deforms along the expansion groove 202 direction and uniformly expands to form a lantern shape, and the mandrel 300 can be disconnected from the notch 301 when subjected to further force, thereby completing the installation of the rivet;
[0036] Further, the core shaft 300 is provided with anti-skid lines 302 at a position away from the shaft body of the rod part 102, and the anti-skid lines 302 facilitate the rivet gun to fix the core shaft 300.
[0037] Although the present application has been described with reference to the embodiments above in the context of particular arrangements of parts, it is to be understood that the application is not limited to the embodiments and that various changes and modifications can be made to the embodiments and parts thereof without departing from the scope of the present application. In particular, the features of the embodiments of the present application described can be used in any combination without departing from the scope of the present application, and the fact that these combinations have not been described in the present specification is merely due to the fact that the present inventor has not foreseen such combinations. Therefore, the present application is not limited to the specific embodiments disclosed in the specification, but includes all technical solutions falling within the scope of the claims.
Claims
1. A high-pressure-bearing lantern rivet, comprising a rivet core (100), an expansion sleeve (200), a mandrel (300), and a reinforcing rib (400), characterized in that: The nail core (100) has a columnar structure, including a head (101) and a rod (102). The head (101) is located at one end of the rod (102) and is coaxially arranged with the rod (102). The expansion sleeve (200) is hollow and is fitted onto the outside of the rod (102). One end of the expansion sleeve (200) is adjacent to the head (101), and the other end is away from the head (101) and fixes the nail head (201). The inner and outer diameters of the expansion sleeve (200) gradually increase from the nail head (201) toward the head (101). The outer circumferential surface of the expansion sleeve (200) is provided with a plurality of circumferentially distributed expansion grooves (202). The expansion grooves (202) extend from the nail head (201) toward the head (101) but do not penetrate the expansion sleeve (200). The depth of the expansion grooves (202) gradually decreases from the nail head (201) toward the head (101), and the spacing between adjacent expansion grooves (202) gradually increases from the nail head (201) toward the head (101). The mandrel (300) is fixed at one end of the rod (102) away from the head (101) and is used to cause the head (101) to squeeze the expansion sleeve (200) when the mandrel (300) is subjected to tension, thereby causing the expansion sleeve (200) to expand outward along the expansion groove (202) to form a lantern-shaped structure; Multiple reinforcing ribs (400) are provided on the side of the nail head (201) near the expansion sleeve (200) and are arranged along the radius of the nail head (201).
2. The high-pressure-bearing lantern rivet according to claim 1, characterized in that, The outer diameter of the head (101) is greater than the outer diameter of the rod (102), the outer edge of the head (101) is rounded, and the outer diameter of the head (101) is greater than the inner diameter of the expansion sleeve (200).
3. The high-pressure-bearing lantern rivet according to claim 1, characterized in that: A notch (301) is provided at the connection between the mandrel (300) and the rod (102). The notch (301) is opened around the mandrel (300) in a circumferential manner and is located on the inner side of the expansion sleeve (200).
4. The high-pressure-bearing lantern rivet according to claim 1, characterized in that: The spindle (300) has anti-slip texture (302) on the shaft body position away from the rod (102).
5. The high-pressure-bearing lantern rivet according to claim 1, characterized in that, Multiple reinforcing ribs (400) are arranged at equal intervals around the expansion sleeve (200). The cross-section of the reinforcing ribs (400) is triangular, and the height of the reinforcing ribs (400) gradually decreases from the nail head (201) towards the head (101).