Riveting structure
By employing a riveted spring and wire design in the insulin pump, the problem of wire detachment or loosening is solved, resulting in a more stable connection and ensuring accurate insulin delivery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-04-07
AI Technical Summary
In existing insulin pumps, the transmission structure, which uses a nickel-titanium alloy shape memory wire and a metal spring for press-fitting, is prone to wire detachment or loosening, resulting in low connection stability.
The device employs a riveting structure, including a spring and a metal wire riveted to it. The spring consists of an upper pressure block and a lower pressure block, with the boss and groove arranged in a straight line facing each other. The metal wire is housed between the upper and lower pressure blocks, and the riveting is achieved by pressing the boss into the groove, thus enhancing the connection's strength.
This improves the connection between the metal wire and the spring, preventing detachment or loosening and ensuring stable operation of the insulin pump.
Smart Images
Figure CN224085767U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a riveting structure. Background Technology
[0002] An insulin pump is a medical device used for continuous subcutaneous infusion of insulin. It employs artificial intelligence control and simulates basal insulin secretion in the body through adjustable pulsatile subcutaneous infusion. An insulin pump mainly consists of the following parts: the pump body, the reservoir, and the infusion tubing. The pump body also contains a transmission mechanism.
[0003] To accurately control the dosage, the transmission structure adopts a nickel-titanium alloy shape memory wire design. The wire needs to be used with a metal spring to achieve the function. Usually, most metal springs are set with a ring with a through hole and the wire is fixed by crimping. However, since the wire is cylindrical, it is easy for the wire to fall off or loosen during long-term use, resulting in low connection strength. Utility Model Content
[0004] The purpose of this utility model is to provide a riveting structure that addresses the shortcomings of the existing technology and solves the technical problem that the transmission structure of the existing insulin pump body, which uses a nickel-titanium alloy shape memory metal wire and a metal spring sheet for pressing and connecting, is prone to wire detachment or loosening, resulting in low stability.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a riveting structure, including a spring sheet and a metal wire riveted to the spring sheet. The spring sheet includes an upper pressing block and a lower pressing block connected to the upper pressing block to form a U-shaped structure. The upper pressing block is provided with at least one boss, and the lower pressing block is provided with at least one groove. The boss and the groove are arranged in the same straight line and face each other, and the boss and the groove are fitted together. The metal wire is accommodated between the upper pressing block and the lower pressing block.
[0006] The present invention is further configured such that a riveting position with a planar design is provided between the front side of the upper pressure block and the upper side away from the lower pressure block.
[0007] The present invention is further configured such that the thickness of the upper pressure block is less than the thickness of the lower pressure block, so that the connection between the upper pressure block and the lower pressure block is stepped.
[0008] The present invention is further configured such that the total thickness of the upper pressure block and the boss is the same as the thickness of the lower pressure block.
[0009] The present invention is further configured such that both the boss and the groove are arc-shaped.
[0010] The present invention is further configured such that: the spring sheet also includes a mounting block connected to the pressing block, the pressing block is disposed on one side of the mounting block, and the groove extends into the mounting block.
[0011] Compared with the prior art, the beneficial effects of this application are as follows: This utility model includes a spring sheet and a metal wire riveted to the spring sheet. The spring sheet includes an upper pressing block and a lower pressing block connected to the upper pressing block to form a U-shaped structure. The upper pressing block is provided with at least one boss, and the lower pressing block is provided with at least one groove. The boss and the groove are arranged in the same straight line and face each other, and the boss and the groove are fitted together. The metal wire is accommodated between the upper pressing block and the lower pressing block. This application uses the boss of the upper pressing block, the groove of the lower pressing block, and the metal wire placed in the U-shaped structure formed by the upper pressing block and the lower pressing block. When the upper pressing block is riveted, the metal wire can be pressed into the groove through the boss, realizing the riveting of the spring sheet and the metal wire, improving the firmness of the connection, and avoiding the phenomenon of falling off or loosening. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model after riveting;
[0014] Figure 2 This is a schematic diagram of the structure of the riveting front spring sheet of this utility model.
[0015] The details of the reference numerals used in the above figures are as follows:
[0016] 1-Spring, 2-Upper pressure block, 21-Boss, 22-Riveting position, 3-Lower pressure block, 31-Groove, 4-Mounting block, 5-Metal wire. Detailed Implementation
[0017] In the description of this application, the term "at least one" refers to one or more (including one), and the terms "connected," "linked," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0018] In the description of this application, the technical terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0019] In order to better understand the above-mentioned objectives, technical solutions and advantages of this application, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings, and to understand in detail how to solve the problems raised in the background art.
[0020] like Figure 1 and Figure 2 As shown, a riveting structure includes a spring piece 1 and a metal wire 5 riveted to the spring piece 1. The spring piece 1 includes an upper pressing block 2 and a lower pressing block 3 connected to the upper pressing block 2 to form a U-shaped structure. The upper pressing block 2 is provided with at least one boss 21, and the lower pressing block 3 is provided with at least one groove 31. The boss 21 and the groove 31 are arranged in the same straight line and face each other, and the boss 21 and the groove 31 are fitted together. The metal wire 5 is accommodated between the upper pressing block 2 and the lower pressing block 3.
[0021] With the above scheme, the boss 21 is set on the inner wall surface of the upper pressure block 2, and the groove 31 is set on the inner wall surface of the lower pressure block 3, so that the boss 21 and the groove 31 can be set facing each other on the same straight line. The metal wire 5 passes through the U-shaped structure formed by the upper pressure block 2 and the lower pressure block 3. When the upper pressure block 2 is riveted by external force, the metal wire 5 can be pressed into the groove 31 through the boss 21, realizing the riveting of the spring piece 1 and the metal wire 5, improving the firmness of the connection between the two, and avoiding the phenomenon of falling off or loosening.
[0022] In this embodiment, the metal wire 5 is a cylindrical nickel-titanium shape memory alloy. The spring piece 1 and the metal wire 5 are riveted together and fixed, which can be used in the pump body of an insulin pump. The spring piece 1 is installed on the electronic information panel of the pump body. The spring piece 1 can provide necessary support to ensure that the metal wire 5 can stably push the piston after being deformed by heat, and quickly return to its original shape after cooling, so as to accurately control the dosage. The boss 21 and the groove 31 are correspondingly provided in twos, increasing the contact area with the metal wire 5 and ensuring firmness. The boss 21 is set along the length of the upper pressure block 2, and the groove 31 is set along the length of the lower pressure block 3. The two bosses 21 or the two grooves 31 are arranged side by side with a gap between them, so that the bosses 21 and the grooves 31 are perpendicular to the metal wire 5. Based on the upper pressure block 2 and the lower pressure block 3, a U-shaped structure is formed. There is a gap between the bosses 21 and the lower pressure block 3. Before riveting, the metal wire 5 is accommodated in the gap. The upper pressure block 2 and the lower pressure block 3 are integrally stamped to ensure structural strength.
[0023] likeFigure 2 As shown, in one specific embodiment of the improvement, a riveting position 22 with a planar design is provided between the front side of the upper pressure block 2 and the upper side away from the lower pressure block 3. Specifically, the riveting position 22 is the point of force application when external machinery applies pressure to the upper pressure block 2. In this embodiment, the riveting position 22 is a horizontal plane, which is parallel to the lower pressure block 3, so that the upper pressure block 2 is subjected to uniform force, increasing the force-bearing area and avoiding breakage during riveting.
[0024] like Figure 1 and Figure 2 As shown, in one specific embodiment of the improvement, the thickness of the upper pressure block 2 is less than the thickness of the lower pressure block 3, so that the connection between the upper pressure block 2 and the lower pressure block 3 is stepped. The total thickness of the upper pressure block 2 and the boss 21 is the same as the thickness of the lower pressure block 3. Specifically, the stepped design allows the spring 1 to better disperse stress during riveting, avoiding damage caused by stress concentration and increasing the stability of the spring 1. At the same time, the initial design position of the upper pressure block 2 can be closer to the lower pressure block 3, leaving enough space for the metal wire 5 to pass through, thereby reducing the riveting amplitude of the upper pressure block 2 and avoiding breakage due to excessive riveting amplitude. This facilitates rapid riveting. Furthermore, when the upper pressure block 2 and the lower pressure block 3 are in a straight line (without bending), the boss 21 is located on the top surface of the upper pressure block 2, and the thickness of the upper pressure block 2 is smaller, which can reduce production costs.
[0025] like Figure 2 As shown, in one specific embodiment of the improvement, both the boss 21 and the groove 31 are arc-shaped. Specifically, based on the interlocking of the boss 21 and the groove 31, the boss 21 is a rectangular block with rounded corners between its top surface and two side surfaces, and the groove 31 is a rectangular slot with rounded corners at the connection between its side surface and bottom surface. Both the top surface of the boss 21 and the bottom surface of the groove 31 are provided with horizontal surfaces, which can increase the stress area of the metal wire 5, while the rounded corners can avoid cutting the metal, thereby ensuring the service life of the metal wire 5.
[0026] like Figure 1 and Figure 2 As shown, in one specific embodiment of the improvement, the spring 1 further includes a mounting block 4 connected to the pressing block 3. The pressing block 3 is disposed on one side of the mounting block 4, and the groove 31 extends into the mounting block 4. Specifically, the mounting block 4 and the pressing block 3 are an integral structure to ensure the structural strength of the spring 1. Since the spring 1 is installed on the electronic information panel, the pressing block 3 can be disposed on the side near the metal wire 5 to form a T-shaped structure, and part of the groove 31 extends into the mounting block 5 to prevent the mounting block 4 from pressing down on the front end of the boss 21 and obstructing it. In this embodiment, the mounting block 4 can be fixed by adhesive. Of course, the mounting block 4 can also be configured with a mounting structure as needed, such as elongated holes and L-shaped clips, to ensure the firmness of the spring 1 installation and avoid affecting the metal wire 5.
[0027] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A riveting structure, characterized in that, The device includes a spring sheet and a metal wire riveted to the spring sheet. The spring sheet includes an upper pressing block and a lower pressing block connected to the upper pressing block to form a U-shaped structure. The upper pressing block is provided with at least one boss, and the lower pressing block is provided with at least one groove. The boss and the groove are arranged in the same straight line and face each other, and the boss and the groove are fitted together. The metal wire is housed between the upper pressing block and the lower pressing block.
2. The riveting structure according to claim 1, characterized in that, A riveting position with a planar design is provided between the front side of the upper pressure block and the upper side away from the lower pressure block.
3. The riveting structure according to claim 2, characterized in that, The thickness of the upper pressure block is less than the thickness of the lower pressure block, so that the connection between the upper pressure block and the lower pressure block is stepped.
4. The riveting structure according to claim 3, characterized in that, The total thickness of the upper pressure block and the boss is the same as the thickness of the lower pressure block.
5. A riveting structure according to claim 1, characterized in that, Both the boss and the groove are arc-shaped.
6. The riveting structure according to claim 1, characterized in that, The spring sheet also includes a mounting block connected to the pressing block, the pressing block being disposed on one side of the mounting block, and the groove extending into the mounting block.