Quantity control structure for multifunctional automatic pen type injector

Abstract

The utility model discloses a quantity control structure for a multifunctional automatic pen type injector, and relates to the technical field of pen type injectors. The injector comprises an injector body, the injector body comprises a spiral twisting block and an injection push key, a threaded opening is formed in the upper portion of the peripheral side of the injector body, two symmetrically-arranged positioning holes are formed in the peripheral side of the spiral twisting block, a quantifying plate is arranged over the spiral twisting block, and an electromagnet is fixed to the middle of the lower end face of the quantifying plate. An extrusion plate attracted to the electromagnet is arranged at the position between the quantifying plate and the injection push key, the threaded opening is slidably sleeved with a movable ring, and a threaded ring in threaded connection with the threaded opening is fixed to the inner side face of the movable ring. According to the utility model, the electromagnet is used for controlling the extrusion plate to move the injection push key so as to realize the function of automatic quantity control, and meanwhile, the screw ring and the threaded opening are matched for use so as to improve the position stability of the quantitative plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of pen-type injectors, in particular to a volume control structure for a multifunctional automatic pen-type injector. Background Art

[0002] Usually composed of a pen cap, a refill holder, a spiral rod, a pen body, a dose adjustment plug and an injection button, the pen syringe is a commonly used injection, nursing and protective device with main functions such as injecting drugs, nursing liquid infusion, protective functions, precise control and portability. It plays an important role in the medical field, helping medical staff provide accurate, safe and effective treatment.

[0003] However, existing pen-type injectors lack automatic control of the injection volume, making it difficult to accurately determine the injection volume. Furthermore, the volume control mechanism used in conjunction with the pen-type injector cannot maintain stable installation, making it prone to misalignment. To address this issue, we provide a volume control mechanism for a multifunctional automatic pen-type injector to address these issues. Utility Model Content

[0004] The purpose of the utility model is to provide a quantity control structure for a multifunctional automatic pen-type injector, which realizes the function of automatic quantity control by controlling the movement of the extrusion plate on the injection push button through the electromagnet, and at the same time, the screw ring and the threaded mouth are used in conjunction to improve the position stability of the quantitative plate.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a quantity control structure for a multifunctional automatic pen-type syringe, comprising a syringe body; the syringe body comprises a spiral twist block and an injection push button; a threaded opening is provided on the upper portion of the peripheral side of the syringe body; two symmetrically arranged positioning holes are provided on the peripheral side of the spiral twist block; a quantitative plate is provided at a position directly above the spiral twist block; an electromagnet is fixed at a middle position on the lower end surface of the quantitative plate; an extrusion plate adsorbed by the electromagnet is provided at a position between the quantitative plate and the injection push button; a movable ring is provided on a sliding sleeve at the position of the threaded opening; a spiral ring spirally connected to the threaded opening is fixed on the inner side surface of the movable ring.

[0007] The utility model is further configured such that a timing switch is fixed at a middle position of the upper end surface of the quantitative plate, and the timing switch is electrically connected to the electromagnet.

[0008] The utility model is further configured such that a ring opening is provided on the lower end surface of the quantitative plate located around the electromagnet, and a spring 1 fixed to the top surface inside the ring opening is fixed on the upper end surface of the extrusion plate.

[0009] The utility model is further configured such that a collar is provided between the quantitative plate and the movable ring and is sleeved on the circumference of the spiral torsion block, and the quantitative plate, the movable ring and the collar are fixedly connected in pairs by connecting strips.

[0010] The present invention is further configured such that a through hole is provided on the peripheral side of the collar at a position corresponding to the positioning hole, a movable hole is provided in the middle of the through hole, and the diameter of the movable hole is larger than the diameter of the through hole.

[0011] The utility model is further configured such that pull plates are provided at positions of the circumferential side of the sleeve corresponding to the through holes, a movable rod located inside the through hole is fixed to the end face of the pull plate, and a circular plate sliding inside the movable hole is fixed to the other end face of the movable rod.

[0012] The present invention is further configured such that a positioning rod is fixed to the other end of the circular plate, and the end of each positioning rod passing through the through hole is respectively inserted into the corresponding positioning hole.

[0013] The utility model has the following beneficial effects:

[0014] When the utility model is in use, the electromagnet is controlled to be powered off, and the squeezing plate will press the injection push button, thereby controlling the syringe body to work, thereby performing the injection work. At the same time, when the syringe body stops working, the electromagnet can be controlled to be powered on, and the electromagnet will adsorb the squeezing plate, so that the squeezing plate and the injection push button are disconnected, and then the injection push button is reset, and the syringe body stops working, thereby controlling the injection time and achieving the effect of controlling the injection volume.

[0015] When the utility model is in use, the movable ring is rotated to spirally sleeve the spiral ring on the position of the threaded opening, so that the quantitative plate can be installed above the spiral twist block. Therefore, when the syringe is completely not in use, the quantitative plate can be directly rotated, and then the quantitative plate will drive the movable ring to rotate and drive the spiral ring to be screwed out inside the threaded opening, so that the movable ring and the syringe body can be detached, thereby improving the position stability of the quantitative plate and ensuring that the position between the quantitative plate and the spiral twist block will not change at will.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The present invention is a structural schematic diagram of a volume control structure for a multifunctional automatic pen-type injector.

[0019] Figure 2 This is a structural combination diagram of the quantitative plate, extrusion plate and pulling plate in the utility model.

[0020] Figure 3 This is a structural diagram of the syringe body in the present utility model.

[0021] Figure 4 This is a structural diagram of the quantitative plate in this utility model.

[0022] Figure 5 This is a structural diagram of the pull plate in the utility model.

[0023] Figure 6 This is a structural diagram of the extruded plate in the present utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1-Syringe body, 101-Threaded mouth, 102-Spiral twist block, 103-Positioning hole, 104-Injection push button, 2-Quantitative plate, 201-Moving ring, 202-Screw ring, 203-Timer switch, 204-Collection ring, 205-Electromagnet, 206-Ring mouth, 207-Moving hole, 208-Through hole, 209-Connecting strip, 3-Squeezing plate, 301-Spring 1, 4-Pull plate, 401-Moving rod, 402-Circular plate, 403-Positioning rod, 404-Spring 2 DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1, please refer to Figures 1 to 6 The utility model is a quantity control structure for a multifunctional automatic pen-type injector, which controls the movement of the extrusion plate 3 to the injection push button 104 through the electromagnet 205 to achieve the function of automatic quantity control. At the same time, the screw ring 202 is used in conjunction with the threaded port 101 to improve the position stability of the quantitative plate 2.

[0028] Specifically, the syringe body 1; the syringe body 1 includes a spiral twist block 102 and an injection push button 104, a threaded opening 101 is provided on the upper part of the peripheral side of the syringe body 1, and two symmetrically arranged positioning holes 103 are provided on the peripheral side of the spiral twist block 102, a quantitative plate 2 is provided at a position directly above the spiral twist block 102, an electromagnet 205 is fixed at a middle position on the lower end surface of the quantitative plate 2, an extrusion plate 3 adsorbed by the electromagnet 205 is provided at a position between the quantitative plate 2 and the injection push button 104, a moving ring 201 is provided with a sliding sleeve at the position of the threaded opening 101, a screw ring 202 spirally connected to the threaded opening 101 is fixed on the inner side surface of the moving ring 201, a timing switch 203 is fixed at a middle position on the upper end surface of the quantitative plate 2, and the timing switch 203 is electrically connected to the electromagnet 205.

[0029] The operation process of this embodiment is as follows: through the use of the above-mentioned structure, the electromagnet 205 is controlled to be de-energized, so that the squeezing plate 3 presses the injection push button 104, thereby controlling the syringe body 1 to work, thereby performing the injection work; at the same time, when the syringe body 1 stops working, the electromagnet 205 can be controlled to be energized, so that the electromagnet 205 adsorbs the squeezing plate 3, so that the squeezing plate 3 and the injection push button 104 are disconnected, and then the injection push button 104 is reset, and the syringe body 1 stops working, thereby realizing the control of the injection time and the effect of controlling the injection volume, and by rotating The movable ring 201 screws the screw ring 202 onto the position of the threaded opening 101, so that the quantitative plate 2 can be installed above the spiral torsion block 102. Therefore, when the syringe is not in use at all, the quantitative plate 2 can be directly rotated, and then the quantitative plate 2 will drive the movable ring 201 to rotate, and drive the screw ring 202 to be screwed out inside the threaded opening 101, so that the movable ring 201 can be detached from the syringe body 1, and at the same time, the timing switch 203 controls the opening and closing of the electromagnet 205, so that the electromagnet 205 can operate the extrusion plate 3 to press the injection push button 104 at a regular time.

[0030] Example 2, please refer to Figure 2 、 Figure 4 and Figure 6 On the basis of Example 1, the spring 1 301 is limited by the ring 206 to ensure that the spring 1 301 can be stably compressed.

[0031] Specifically, a ring opening 206 is provided on the lower end surface of the quantitative plate 2 located around the electromagnet 205, and a spring 301 fixed to the top surface of the ring opening 206 is fixed on the upper end surface of the extrusion plate 3. A ring 204 is provided between the quantitative plate 2 and the movable ring 201 and is positioned on the side of the spiral torsion block 102. The quantitative plate 2, the movable ring 201 and the ring 204 are fixedly connected to each other by a connecting strip 209.

[0032] The operation process of this embodiment is as follows: through the setting and use of the above-mentioned structure, when the electromagnet 205 adsorbs the extrusion plate 3, the extrusion plate 3 will compress the spring 1 301. At the same time, the spring 1 301 is installed in the internal position of the ring 206. The ring 206 will limit the spring 1 301 to ensure that the spring 1 301 is stably compressed.

[0033] Example 3, please refer to Figure 3 、 Figure 4 and Figure 5 On the basis of Example 1 and Example 2, the collar 204 is installed on the spiral torsion block 102 through the positioning rod 403, so that the quantitative plate 2 can move synchronously with the spiral torsion block 102.

[0034] Specifically, a through hole 208 is provided at the position of the positioning hole 103 on the circumferential side of the collar 204, a movable hole 207 is provided in the middle position of the through hole 208, and the aperture of the movable hole 207 is larger than the aperture of the through hole 208. A pull plate 4 is provided at the position of the through hole 208 on the circumferential side of the collar 204, and a movable rod 401 is fixed to the end face of the pull plate 4, which is located in the internal position of the through hole 208. A circular plate 402 is fixed to the other end face of the movable rod 401, which slides in the internal position of the movable hole 207. A spring 2 404 is fixed to the end face of the circular plate 402, which is sleeved on the circumferential side of the movable rod 401, and the spring 2 404 is in contact with the inner end face of the movable hole 207. A positioning rod 403 is fixed to the other end of the circular plate 402, and the end of each positioning rod 403 passing through the through hole 208 is respectively inserted into the corresponding positioning hole 103.

[0035] The operation process of this embodiment is as follows: when it is necessary to ensure the synchronous movement of the spiral torsion block 102 and the quantitative plate 2, the collar 204 can be placed on the position of the spiral torsion block 102 and rotated, thereby the collar 204 will drive the through hole 208 to move to the position of the positioning hole 103, at this time, the positioning rod 403 can be inserted from the inside of the through hole 208 into the positioning hole 103, so that the collar 204 can be installed in the position of the spiral torsion block 102, and when the collar 204 is moved, the pull plate 4 can be moved away from the collar 204. The pull plate 401 moves in the same direction, and the pull plate 4 drives the movable rod 401 to move, and thereby drives the circular plate 402 to move inside the movable hole 207, so that the circular plate 402 directly drives the positioning rod 403 to move out of the internal position of the positioning hole 103. At the same time, when the circular plate 402 moves, the spring 2 404 is compressed. Therefore, after the pull plate 4 is released, the spring 2 404 pushes the circular plate 402 to move, ensuring that the circular plate 402 pushes the positioning rod 403 to move back to the positioning hole 103 and ensuring the stability of the insertion of the positioning rod 403.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A volume control structure for a multifunctional automatic pen-type injector, comprising an injector body (1); characterized in that: The syringe body (1) comprises a spiral twist block (102) and an injection push button (104); a threaded opening (101) is provided on the upper portion of the peripheral side of the syringe body (1); two symmetrically arranged positioning holes (103) are provided on the peripheral side of the spiral twist block (102); a quantitative plate (2) is provided at a position directly above the spiral twist block (102); an electromagnet (205) is fixed at a middle position of the lower end surface of the quantitative plate (2); an extrusion plate (3) adsorbed by the electromagnet (205) is provided at a position between the quantitative plate (2) and the injection push button (104); a moving ring (201) is provided on a sliding sleeve at the position of the threaded opening (101); a spiral ring (202) spirally connected to the threaded opening (101) is fixed on the inner side surface of the moving ring (201).

2. A volume control structure for a multifunctional automatic pen-type injector according to claim 1, characterized in that: A timing switch (203) is fixed at the middle position of the upper end surface of the quantitative plate (2), and the timing switch (203) is electrically connected to the electromagnet (205).

3. The volume control structure for a multifunctional automatic pen-type injector according to claim 1, characterized in that: A ring opening (206) is provided on the lower end surface of the quantitative plate (2) located around the electromagnet (205), and a spring (301) fixed to the top surface of the ring opening (206) is fixed on the upper end surface of the extrusion plate (3).

4. The volume control structure for a multifunctional automatic pen-type injector according to claim 1, characterized in that: A collar (204) is provided between the quantitative plate (2) and the movable ring (201), which is sleeved on the circumference of the spiral torsion block (102). The quantitative plate (2), the movable ring (201), and the collar (204) are fixedly connected to each other by a connecting strip (209).

5. The volume control structure for a multifunctional automatic pen-type injector according to claim 4, characterized in that: A through hole (208) is provided on the circumferential side of the collar (204) at a position corresponding to the positioning hole (103), and a movable hole (207) is provided in the middle of the through hole (208), and the diameter of the movable hole (207) is larger than the diameter of the through hole (208).

6. The volume control structure for a multifunctional automatic pen-type injector according to claim 5, characterized in that: Pull plates (4) are provided at positions on the circumferential side of the collar (204) corresponding to the through hole (208), a movable rod (401) located inside the through hole (208) is fixed to the end face of the pull plate (4), and a circular plate (402) slidingly located inside the movable hole (207) is fixed to the other end face of the movable rod (401).

7. The volume control structure for a multifunctional automatic pen-type injector according to claim 6, characterized in that: A second spring (404) is fixed to the end surface of the circular plate (402) and is sleeved on the circumferential side of the movable rod (401), and the second spring (404) is in contact with the inner end surface of the movable hole (207).

8. The volume control structure for a multifunctional automatic pen-type injector according to claim 7, characterized in that: A positioning rod (403) is fixed to the other end of the circular plate (402), and the end of each positioning rod (403) passing through the through hole (208) is respectively inserted into the corresponding positioning hole (103).

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