Quickly-installed split type refill holder and portable electronic injection pen

Abstract

The utility model provides a split type pen refill support of quick installation, including first split body for installing battery and second split body for installing control panel, first split body is equipped with first accommodating cavity, second split body is equipped with second accommodating cavity, first split body and second split body are tightly attached through the clamping, and first accommodating cavity and second accommodating cavity form the accommodating space that can accommodate motor and push rod along the axial direction, battery, first split body, second split body and control panel are integratedly arranged along the radial direction of accommodating space. The utility model further provides a portable electronic injection pen. The utility model can effectively reduce the occupation of motor end radial space, fully utilizes the axial space, guarantees the gravity distribution of injection pen whole even, is convenient for user to hold, increases operation stability.

Description

Technical Field

[0001] This utility model relates to the field of electronic injection pens, and in particular to a quick-installation split pen refill holder and a portable electronic injection pen. Background Technology

[0002] Injection pens are common medical devices primarily used for injecting or aspirating medications, precisely dispensing the required dose. Current electronic injection pen designs have certain limitations. Common electronic injection pens typically have a relatively robust outer casing, resulting in a poor grip and fatigue during prolonged use. Furthermore, key components such as the motor, circuit control board, and the motor and rechargeable battery are generally housed in a distributed manner. This distributed arrangement necessitates numerous axial and circumferential limiting components to ensure the stability and functionality of each part. However, this design makes the circumferential volume of the motor end significantly larger than that of the needle end, leading to an uneven distribution of the pen's center of gravity. This not only affects operational stability during injection but also reduces portability, causing considerable inconvenience for users.

[0003] In the prior art, such as the Chinese invention patent with patent number ZL202011560655.6 and invention title "Electronic Syringe with Automatic Needle Advance and Retraction", it is specifically disclosed that "it includes a cap, a fixed sleeve is slidably sleeved inside the cap, a medicine bottle sleeve is threadedly sleeved at one end of the fixed sleeve, a needle is clamped on one side of the medicine bottle sleeve, a bushing is provided on the outside of the medicine bottle sleeve and the needle, which is threadedly sleeved with the cap, a motor is fixedly connected to one side of the cap, and a lead screw is fixedly connected to the output end of the motor through a coupling". In this technical solution, the motor and battery are arranged in a distributed manner, which results in the circumferential volume of the motor end being much larger than the circumferential volume of the needle end. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a quick-installation split pen refill holder and a portable electronic injection pen, which effectively reduces the space occupied by the motor end and makes full use of the space structure of the pen refill holder.

[0005] This utility model proposes a quick-installation split-type pen refill holder, including a first split for installing a battery and a second split for installing a control board. The first split has a first receiving cavity, and the second split has a second receiving cavity. The first split and the second split are tightly fitted together by snap-fit, so that the first receiving cavity and the second receiving cavity form a receiving space along the axial direction that can accommodate a motor and a push rod. The battery, the first split, the second split, and the control board are integrated and arranged along the radial direction of the receiving space.

[0006] Preferably, the top of the first component is provided with a first platform for installing the battery.

[0007] Preferably, the first split body has multiple first snap-fit ​​parts and / or second snap-fit ​​parts on both sides, and the second split body has a first slot corresponding to the first snap-fit ​​parts and / or the second snap-fit ​​parts.

[0008] Preferably, the first locking part includes a first elastic locking member and a second elastic locking member, the first elastic locking member and the second elastic locking member are spaced apart, the first elastic locking member is provided with a first limiting block at the end away from the first part, the second elastic locking member is provided with a second limiting block at the end away from the first part, and the first limiting block and the second limiting block are mirror images of each other.

[0009] Preferably, the bottom of the second part is provided with multiple pairs of symmetrically arranged second snap-fit ​​parts for snapping the control board.

[0010] Preferably, the first segment has a first limiting part at one end and a second limiting part at the other end; the second segment has a third limiting part at one end; the first limiting part and the third limiting part abut against each other in the axial direction, and the second limiting part abuts against the end of the other end of the second segment in the axial direction, so as to restrict the first segment and the second segment from moving in the axial direction.

[0011] Preferably, it further includes a third locking part, on one side of which is provided a plurality of hooks. When the second limiting part and the third limiting part abut against each other, the hooks are engaged with the inner end faces of the second limiting part and the third limiting part.

[0012] Preferably, a second slot is provided adjacent to the outer end face of the second limiting part, and a third slot is provided adjacent to the outer end face of the third limiting part. The second slot and the third slot are symmetrically arranged, and elastic connecting members are engaged on the second slot and the third slot.

[0013] Preferably, the first or second component has a latch at the end where the motor is installed, for engaging a signal amplification device or a starting device.

[0014] Another aspect of this utility model proposes a portable electronic injection pen, including a split pen refill holder for quick installation as described in the above embodiment. The pen refill holder has a motor and a push rod arranged axially inside, and the motor is connected to the push rod through a screw.

[0015] As described above, the present invention relates to a quick-installation split-type pen refill holder and a portable electronic injection pen, which have the following beneficial effects:

[0016] This invention features a first receiving cavity on the first component and a second receiving cavity on the second component. When the first and second components are tightly fitted together via a snap-fit ​​connection, the first and second receiving cavities axially form a space capable of accommodating the pen refill assembly consisting of the motor and the push rod, achieving integrated installation of the motor and push rod. The battery is installed on the first component, and the control board is installed on the second component, resulting in an integrated arrangement of the battery, first component, second component, and control board from top to bottom. This invention effectively reduces the radial space occupied by the motor end, fully utilizes the axial space, ensures a uniform center of gravity distribution for the entire injection pen, facilitates user grip, and increases operational stability. Attached Figure Description

[0017] Figure 1 A three-dimensional assembly diagram of a split pen refill holder provided in an embodiment of the present utility model;

[0018] Figure 2 A three-dimensional schematic diagram of a split pen refill holder provided in an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Sectional view AA;

[0020] Figure 4 for Figure 2 Exploded view;

[0021] Figure 5 for Figure 4 Enlarged view of a portion (I);

[0022] Figure 6 A front view of the first component provided in an embodiment of this utility model;

[0023] Figure 7 A top view of the first split part provided in an embodiment of the present utility model;

[0024] Figure 8 A bottom view of the first split part provided in an embodiment of this utility model;

[0025] Figure 9 for Figure 6 Local magnification Figure II ;

[0026] Figure 10 for Figure 6 The left view;

[0027] Figure 11 This is a front view of the second component provided in an embodiment of the present invention;

[0028] Figure 12 This is a top view of the second component provided in an embodiment of the present invention;

[0029] Figure 13 A bottom view of the second split body provided in an embodiment of this utility model;

[0030] Figure 14 for Figure 11 The right view.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100, First split part; 110, First receiving cavity; 120, First slot; 130, First engaging part; 131, First elastic locking element; 1311, First limiting block; 132, Second elastic locking element; 1321, Second limiting block; 140, First limiting part; 150, Second limiting part; 151, Second slot; 160, First platform; 170, Buckle; 180, Second platform; 200, Second split part; 210, Second receiving cavity; 220, Second engaging part; 221, Third slot; 230, Third limiting part; 300, Battery; 400, Control board; 500, Third engaging part; 510, Hook; 600, Elastic connector; 700, Push rod. Detailed Implementation

[0033] 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.

[0034] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0035] like Figures 1 to 14As shown, an embodiment of a quick-installation split pen refill holder includes a first split 100 for mounting a battery 300 and a second split 200 for mounting a control board 400. The first split 100 is snapped onto the second split 200. The first split 100 has a first receiving cavity 110, and the second split 200 has a second receiving cavity 210. The first split 100 and the second split 200 are tightly fitted together by snapping, so that the first receiving cavity 110 and the second receiving cavity 210 form a receiving space along the axial direction that can accommodate a motor and a push rod.

[0036] During assembly, such as Figure 2 and Figure 4 As shown, a motor (not shown) and a push rod 700 are integrated axially to form a pen refill assembly. This pen refill assembly is then placed within the second receiving cavity 210, positioning the motor and push rod 700 within a predetermined area. After the pen refill assembly is installed, the first split part 100 is snapped onto the second split part 200. The parting surfaces of the first split part 100 and the second split part 200 fit tightly together, ensuring the pen refill assembly is compactly positioned within the receiving space formed by the first receiving cavity 110 and the second receiving cavity 210, thus completing the assembly of the pen refill holder. Within this receiving space, the push rod 700 reciprocates axially under the drive of the motor. In this embodiment, the push rod is non-circular; preferably square, it restricts circumferential rotation and avoids the need for additional guide devices. Compared to existing technologies, this embodiment integrates the motor and push rod, effectively reducing the radial dimension of the injection pen motor end and fully utilizing the axial space, resulting in a more compact overall structure of the injection pen. It should be noted that, in order to facilitate installation and make the structure more compact, the shape of the battery 300 in this embodiment is preferably a sheet-shaped cycle battery.

[0037] After the pen refill holder is assembled, as follows Figure 1 As shown, the battery 300 is installed on the top of the first split 100, and the control board 400 is installed on the bottom, so that the battery 300, the first split 100, the second split 200 and the control board 400 are integrated and arranged along the radial direction of the accommodating space. This makes the center of gravity of the whole formed by the battery 300, the pen holder and the control board 400 evenly distributed, avoiding the problem of the motor end having an excessively large circumferential volume. After installing a shell on its outside, it is convenient for the operator to hold and use, and increases the stability of operation.

[0038] In one embodiment, such as Figure 4 and Figure 7 As shown, the top of the first component 100 is provided with a first platform 160 for mounting the battery 300. The mounting surface of the first platform 160 is a flat surface for mounting the sheet-shaped battery. Figure 13As shown, the bottom of the second component 100 is provided with a second platform 180 for mounting the control board 400, and the mounting surface of the second platform 180 is a flat surface. This embodiment, through the arrangement of the first platform 160 and the second platform 180, aims to fully utilize the space of the flat portion in the radial direction of the pen refill holder, making the pen refill holder structure more compact.

[0039] In one embodiment, the first split body 100 is provided with a first snap-fit ​​portion 130 on both sides. The first snap-fit ​​portions 130 on both sides of the first split body 100 are not limited to symmetrically arranged, and the first snap-fit ​​portions 130 are arranged along the axial direction. The second split body 200 is provided with a first slot 120 corresponding to the first snap-fit ​​portion 130.

[0040] Alternatively, the first split body 100 may be provided with second snap-fit ​​portions 220 on both sides, and the first snap-fit ​​portions 130 on both sides of the first split body 100 may be provided symmetrically, and the first snap-fit ​​portions 130 may be arranged along the axial direction. The second split body 200 may be provided with a first slot 120 corresponding to the first snap-fit ​​portion 130.

[0041] Alternatively, in this preferred embodiment, such as Figures 6 to 8 As shown, both sides of the first split 100 are provided with a snap-fit ​​part composed of a snap-fit ​​part 130 and a snap-fit ​​part 220. The arrangement order of the first snap-fit ​​part 130 and the second snap-fit ​​part 220 is not limited here. The second split 200 is provided with a first slot 120 corresponding to the first snap-fit ​​part 130 and the second snap-fit ​​part 220.

[0042] To facilitate disassembly, both the first snap-fit ​​portion 130 and the second snap-fit ​​portion 220 can be made of elastic plastic. In this embodiment, the first snap-fit ​​portion 130 and / or the second snap-fit ​​portion 220 are snapped into the first slot 120 to prevent the first split body 100 and the second split body 200 from separating during use.

[0043] In one embodiment, such as Figure 9 As shown, the first locking portion 130 includes a first elastic locking member 131 and a second elastic locking member 132. The first elastic locking member 131 and the second elastic locking member 132 are spaced apart. The first elastic locking member 131 has a first 1311 at the end away from the first split part, and the second elastic locking member 132 has a second limiting block 1321 at the end away from the first split part. The first limiting block 1311 and the second limiting block 1321 are mirror images of each other. To facilitate locking, the outer sidewalls of the first limiting block 1311 and the second limiting block 1321 are provided with inclined surfaces, such that the upper dimension of the inclined surface is larger than the lower dimension, which serves as a guide during installation.

[0044] During engagement, when the first elastic locking member 131 and the second elastic locking member 132 are inserted into the first locking groove 120, under the action of the inclined surface, the side walls of the first locking groove 120 axially press the first elastic locking member 131 and the second elastic locking member 132 until they are fully inserted into the first locking groove. Simultaneously, the tops of the first limiting block 1311 and the second limiting block 1321 abut against the bottom of the first locking groove.

[0045] In one embodiment, such as Figure 4 and Figure 11 As shown, in this embodiment, the bottom of the second split 200 is provided with two pairs of symmetrically arranged second snap-fit ​​portions 220. Alternatively, three or more pairs of second snap-fit ​​portions 220 may be provided, which is not limited here. The end of the second snap-fit ​​portion 220 is provided with a hook, which is used to snap into the control board.

[0046] It should be noted that the second latching part 220 on the second split 200 and the second latching part 220 on the first split 100 can have different heights, allowing for the installation of circuit boards and displays, or circuit boards and circuit boards, depending on different needs. When a display screen needs to be installed, the highest part latches the display screen, or the highest part latches the circuit board and the display screen is attached to the circuit board.

[0047] In one embodiment, such as Figures 4 to 13 As shown, in this embodiment, the first segment 100 is provided with a first limiting part 140 at one end and a second limiting part 150 at the other end; the second segment 200 is provided with a third limiting part 230 at one end; the first limiting part 140 and the third limiting part 230 abut against each other in the axial direction, and the second limiting part 150 abuts against the end of the second segment at the other end in the axial direction, so as to restrict the first segment 100 and the second segment 200 from moving in the axial direction, so as to ensure that the first segment 100 and the second segment 200 move in the axial direction.

[0048] Alternatively, the first limiting part 140 can be disposed at the end of the second part 200 away from the third limiting part 230. During installation, the first limiting part 140 abuts against the end of the first part 100 in the axial direction. The second limiting part 150 and the third limiting part 230 are described in detail above and will not be repeated here.

[0049] In one embodiment, such as Figure 1 , Figure 3 and Figure 4As shown, in this embodiment, the pen refill holder further includes a third locking portion 500. Multiple hooks 510 are provided on one side of the third locking portion 500. When the second limiting portion 150 and the third limiting portion 230 abut, the hooks 510 engage with the inner end faces of the second limiting portion 150 and the third limiting portion 230. The other end of the third locking portion 500 is connected to the end of the injection pen cartridge holder. This embodiment serves two purposes: firstly, to further secure the first split 100 and the second split 200; secondly, to connect one end of the first split 100 and the second split 200 where the push rod is mounted to the third locking portion 500.

[0050] Furthermore, the third locking part 500 is also provided with an abutting block that abuts against the second limiting part 150 and the third limiting part 230 to prevent the third locking part 500 from rotating circumferentially when locking.

[0051] In one embodiment, such as Figure 5 , Figure 8 and Figure 13 As shown, in this embodiment, a second slot 151 is provided adjacent to the outer end face of the second limiting part 150, and a third slot 221 is provided adjacent to the outer end face of the third limiting part 230. The second slot 151 and the third slot 221 are symmetrically arranged, and an elastic connector 600 is engaged with the second slot 151 and the third slot 221. One end of the elastic connector 600 is engaged with the second slot 151 and the third slot 221, and the other end abuts against the end face of the cartridge bottle inside the injection pen holder, preventing the cartridge bottle from shaking within the injection pen holder. The elastic connector 600 is disposed within the third engaging part 500, making full use of the internal space of the third engaging part 500, resulting in a more compact overall structure of the injection pen assembly.

[0052] In one embodiment, such as Figure 4 , Figures 6 to 8 As shown, in this embodiment, the first split 100 or the second split 200 is provided with a buckle 170 at the end where the motor is installed, which is used to snap the signal amplification device or the starting device, so as to make full use of the axial space at the motor end of the second split or the first split.

[0053] Another aspect of this utility model proposes a portable electronic injection pen, including a quick-release split pen refill holder as described in any of the above embodiments. The pen refill holder has a motor and a push rod arranged axially inside, and the motor is connected to the push rod via a screw.

[0054] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A quick-installation, detachable pen refill holder, characterized in that, The device includes a first component (100) for mounting a battery and a second component (200) for mounting a control board. The first component (100) has a first receiving cavity (110), and the second component (200) has a second receiving cavity (210). The first component (100) and the second component (200) are tightly fitted together by snap-fitting, so that the first receiving cavity (110) and the second receiving cavity (210) form a receiving space along the axial direction that can accommodate a motor and a push rod. The battery (300), the first component (100), the second component (200), and the control board (400) are integrated and arranged along the radial direction of the receiving space.

2. The quick-installation split-type pen refill holder according to claim 1, characterized in that, The top of the first component (100) is provided with a first platform (160) for mounting the battery (300).

3. The quick-installation split-type pen refill holder according to claim 1, characterized in that, The first split body (100) has multiple first snap-fit ​​parts (130) and / or second snap-fit ​​parts (220) on both sides, and the second split body (200) has a first slot (120) corresponding to the first snap-fit ​​parts (130) and / or the second snap-fit ​​parts (220).

4. The quick-installation split-type pen refill holder according to claim 3, characterized in that, The first locking part (130) includes a first elastic locking member (131) and a second elastic locking member (132). The first elastic locking member (131) and the second elastic locking member (132) are spaced apart. The first elastic locking member (131) has a first limiting block (1311) at the end away from the first part, and the second elastic locking member (132) has a second limiting block (1321) at the end away from the first part. The first limiting block (1311) and the second limiting block (1321) are mirror images of each other.

5. The quick-installation split-type pen refill holder according to claim 3, characterized in that, The bottom of the second split (200) is provided with multiple pairs of second snap-fit ​​parts (220) arranged symmetrically for snap-fitting the control board (400).

6. The quick-installation split-type pen refill holder according to claim 1, characterized in that, The first split body (100) has a first limiting part (140) at one end and a second limiting part (150) at the other end; the second split body (200) has a third limiting part (230) at one end; the first limiting part (140) and the third limiting part (230) abut against each other in the axial direction, and the second limiting part (150) abuts against the end of the other end of the second split body in the axial direction, so as to restrict the first split body (100) and the second split body (200) from moving in the axial direction.

7. The quick-installation split-type pen refill holder according to claim 6, characterized in that, It also includes a third snap-fit ​​part (500), on one side of which is provided a plurality of snap hooks (510). When the second limiting part (150) and the third limiting part (230) abut, the snap hooks (510) snap onto the inner end faces of the second limiting part (150) and the third limiting part (230).

8. The quick-installation split-type pen refill holder according to claim 7, characterized in that, A second slot (151) is provided adjacent to the outer end face of the second limiting part (150), and a third slot (221) is provided adjacent to the outer end face of the third limiting part (230). The second slot (151) and the third slot (221) are symmetrically arranged, and elastic connectors (600) are engaged on the second slot (151) and the third slot (221).

9. The quick-installation split-type pen refill holder according to any one of claims 1 to 8, characterized in that, The first component (100) or the second component (200) has a buckle (170) at the end where the motor is installed, for attaching a signal amplification device or a starting device.

10. A portable electronic injection pen, characterized in that, The invention includes a quick-installation split pen refill holder as described in any one of claims 1 to 9, wherein a motor and a push rod are provided axially inside the pen refill holder, and the motor is connected to the push rod via a screw.

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