Cap structure and injection pen
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-08-14
AI Technical Summary
[0004]但是，由于笔盖的部分插入到笔身内，笔身内的支架和笔盖端部相抵，注射笔在整体携带过程中，笔身和笔盖之间的支架容易出现晃动，导致笔身内部其他组成结构易出现错位等现象
[0018] The beneficial effect of this utility model is that it provides a cap structure, which achieves the effect of simultaneously limiting the outer and inner circumferential surfaces of the support by setting the rib assembly, thus solving the problem of the support wobbling between the cap structure and the pen body and improving the stability of the support inside the pen body during the carrying of the injection pen.
Smart Images
Figure CN224628317U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical technology, specifically relating to syringes, and more particularly to cap structures and injection pens. Background Technology
[0002] Injection pen therapy can be categorized into diabetes treatment, growth hormone therapy, osteoporosis treatment, fertility treatment, and other treatments. Injection pens are often carried by patients.
[0003] In related technologies, an injection pen includes: a pen body, a pen cap, and a pen cover. The pen cap is assembled at the beginning of the pen body, and the pen cover is assembled at the end of the pen body. The pen cap and pen cover allow the two ends of the pen body to form a relatively sealed space.
[0004] However, because the pen cap is inserted into the pen body, the support inside the pen body and the end of the pen cap are against each other. During the overall carrying of the injection pen, the support between the pen body and the pen cap is prone to shaking, which may cause other internal components of the pen body to become misaligned.
[0005] Therefore, how to prevent the support from shaking is a technical problem that urgently needs to be solved in this field.
[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0007] This disclosure provides at least one cap structure to solve the technical problem of bracket swaying.
[0008] In a first aspect, embodiments of this disclosure also provide a cap structure, including: an outer cap cylinder having a central boss inside; a support limiting rib assembly being provided between the outer cap cylinder and the central boss; the rib assembly including a first rib and a second rib arranged interlaced with each other, wherein the first rib is disposed on the inner wall of the outer cap cylinder and abuts against the outer wall of the support, and the second rib is disposed on the outer wall of the central boss and abuts against the inner wall of the support.
[0009] In one optional embodiment, both the first and second reinforcing bars have a chamfered surface above them, and the height of the first reinforcing bar is greater than the height of the second reinforcing bar.
[0010] In one alternative embodiment, the first and second reinforcing bars are arranged alternately.
[0011] In one optional embodiment, the outer wall of the cap outer cylinder is provided with at least one deformation opening; protrusions are provided on both sides of the deformation opening towards the outer wall of the cap outer cylinder; wherein when the protrusions are squeezed, the two sides of the deformation opening are driven to deform towards the center of the cap outer cylinder.
[0012] In one alternative embodiment, a chamfered surface is provided above the protrusion.
[0013] In one alternative embodiment, the outer wall of the cap outer sleeve is provided with at least one guide ridge.
[0014] In one optional embodiment, a mirrored arc-shaped boss is provided on the outer peripheral surface of the central boss, and a weight-reducing groove is formed between adjacent arc-shaped bosses.
[0015] Secondly, the present disclosure also provides a cap structure, including: a cap outer cylinder disposed at the tail end of the pen body; a rib assembly adapted to position the bracket; a locking member adapted to fix the bracket; and the locking member including at least one set of clips, with each set consisting of two clips; a slot is formed between the two clips; wherein after the bracket is assembled with the cap structure, the clips on the bracket are adapted to be inserted into the slot.
[0016] In one optional embodiment, the rib assembly includes rib one and rib two. Rib one is evenly spaced on the inner wall of the cap outer cylinder; rib two is evenly spaced on the outer wall of the central boss of the cap outer cylinder; and both rib one and rib two have chamfered surfaces above them. After the bracket and cap structure are assembled, the outer wall of the bracket abuts against rib one, and the inner wall of the bracket abuts against rib two.
[0017] Thirdly, this disclosure also provides an injection pen, including: an outer shell, a support, and a cap structure as described above; the outer shell is fitted onto the cap structure, and the support is fitted inside the cap structure.
[0018] The beneficial effect of this utility model is that it provides a cap structure, which achieves the effect of simultaneously limiting the outer and inner circumferential surfaces of the support by setting the rib assembly, thus solving the problem of the support wobbling between the cap structure and the pen body and improving the stability of the support inside the pen body during the carrying of the injection pen.
[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 A perspective view of the cap structure provided in an embodiment of this disclosure;
[0023] Figure 2 A perspective view of the connection state between the cap structure and the bracket provided in an embodiment of this disclosure;
[0024] Figure 3 A perspective view of the cap structure separated from the support according to an embodiment of this disclosure;
[0025] Figure 4 A perspective view of an injection pen provided in an embodiment of this disclosure;
[0026] Figure 5 This is a perspective cross-sectional view of the outer sleeve of the cap provided in an embodiment of this disclosure.
[0027] In the picture:
[0028] 1. Injection pen;
[0029] 2. Outer shell;
[0030] 3. Outer sleeve of the cap; 31. Central boss; 32. Arc-shaped boss;
[0031] 4. Reinforcing bar assembly; 41. Reinforcing bar one; 42. Reinforcing bar two;
[0032] 5. Deformation opening;
[0033] 6. Protrusion;
[0034] 7. Guide protrusion;
[0035] 8. Snap-fit component; 81. Clamping piece; 82. Snap-fit slot;
[0036] 9. Bracket; 91. Clip. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0038] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0039] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0040] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0041] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0042] Research has found that, in related technologies, injection pens include: a pen body, a pen cap, and a pen cover. The pen cap is assembled at the beginning of the pen body, and the pen cover is assembled at the end of the pen body. The pen cap and pen cover create a relatively sealed space at both ends of the pen body.
[0043] However, because the pen cap is inserted into the pen body, the support inside the pen body and the end of the pen cap are against each other. During the overall carrying of the injection pen, the support is prone to wobbling between the pen body and the pen cap, which can cause other internal components of the pen body to become misaligned.
[0044] Therefore, how to prevent the support from shaking is a technical problem that urgently needs to be solved in this field.
[0045] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.
[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0047] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0048] like Figures 1 to 5 As shown, some embodiments provide a cap structure, including: a cap outer tube 3, the outer contour of which is circular or a regular polygon; a central boss 31 is provided inside the cap outer tube 3; and a bracket 9 limiting rib assembly 4 is provided between the cap outer tube 3 and the central boss 31.
[0049] Please see Figure 5 The following describes the composition of the rib assembly 4. The rib assembly 4 includes rib one 41 and rib two 42 arranged interlockingly. Rib one 41 is disposed on the inner wall of the cap outer cylinder 3 and abuts against the outer wall of the bracket 9. Rib two 42 is disposed on the outer wall of the central boss 31 and abuts against the inner wall of the bracket 9. After the bracket 9 is assembled with the cap structure, the outer wall of the bracket 9 abuts against rib one 41, and the inner wall of the bracket 9 abuts against rib two 42.
[0050] Please see Figure 1 and combined Figure 5 Both rib 41 and rib 42 have chamfered surfaces on their tops. The height of rib 41 is greater than that of rib 42. The main purpose of this design is to facilitate the insertion of the bracket 9 between the outer cylinder 3 of the cap and the central boss 31. Ribs 41 and rib 42 are set at equal intervals, and there are slots between adjacent ribs to reduce the overall weight of the cap structure.
[0051] Please see Figure 1 and combined Figures 2 to 3To ensure a stable connection between the cap structure and the pen body, the outer wall of the cap outer tube 3 is provided with at least one deformation opening 5. Protrusions 6 are provided on both sides of the deformation opening 5 towards the outer wall of the cap outer tube 3. When the pen body is fitted onto the protrusions 6 of the cap outer tube 3, the deformation opening 5 deforms. When the protrusion 6 moves to the slot position of the pen body, the pressure on the protrusion 6 is released, and the deformation opening 5 springs back to its original state. The protrusion 6 is then rebounded to pass through the slot, thus connecting the pen body and the cap outer tube 3. It should be further noted that when the protrusion 6 is compressed, it drives the two sides of the deformation opening 5 to deform towards the center of the cap outer tube 3. A chamfered surface is provided above the protrusion 6.
[0052] Please see Figure 3 The outer wall of the cap outer cylinder 3 is provided with at least one guide protrusion 7. A mirrored arc-shaped protrusion 32 is provided on the outer peripheral surface of the central protrusion 31. The upper part of the arc-shaped protrusion 32 is used to abut against the lower part of the bracket 9 to achieve a supporting effect. In addition, a weight-reducing groove is formed between adjacent arc-shaped protrusions 32.
[0053] Please see Figure 1 and combined Figures 2 to 3 Some embodiments provide a cap structure, including: a cap outer cylinder 3 disposed at the tail end of the pen body; a rib assembly 4 adapted to position a bracket 9; a locking member 8 adapted to fix the bracket 9; and the locking member 8 includes at least one set of clips 81, with each set consisting of two clips 81; a slot 82 is formed between the two clips 81; wherein after the bracket 9 is assembled with the cap structure, the locking strip 91 on the bracket 9 is adapted to be inserted into the slot 82, that is, the first rib 41 is disposed on the inner wall of the cap outer cylinder 3 and abuts against the outer wall of the bracket 9, and the second rib 42 is disposed on the outer wall of the central boss 31 and abuts against the inner wall of the bracket 9.
[0054] Please see Figure 3 The rib assembly 4 includes rib one 41 and rib two 42. Rib one 41 is evenly spaced on the inner wall of the cap outer cylinder 3; rib two 42 is evenly spaced on the outer wall of the central boss 31 of the cap outer cylinder 3; and chamfered surfaces are provided above rib one 41 and rib two 42. The main purpose of this design is to facilitate the insertion of the bracket 9 between the cap outer cylinder 3 and the central boss 31. Rib one 41 and rib two 42 are evenly spaced, and there are slots between adjacent ribs to reduce the overall weight of the cap structure. After the bracket 9 is assembled with the cap structure, the outer wall of the bracket 9 abuts against rib one 41, and the inner wall of the bracket 9 abuts against rib two 42.
[0055] Please see Figure 4 Some embodiments provide an injection pen, including: a housing 2, a support 9, and a cap structure as described above; the housing 2 is fitted onto the cap structure, see [link to relevant documentation]. Figure 3 The support frame is set inside the cap structure.
[0056] In summary, by setting the rib assembly 4, it achieves the effect of simultaneously limiting the outer and inner circumferential surfaces of the support 9, solving the problem of the support 9 wobbling between the cap structure and the pen body, and improving the stability of the support 9 inside the pen body during the carrying of the injection pen 1.
[0057] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0058] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0059] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A cap structure, characterized by, include: The outer tube of the cap (3) has a central boss (31) inside. A bracket (9) limiting rib assembly (4) is provided between the outer sleeve of the cap (3) and the central boss (31). The rib assembly (4) includes rib one (41) and rib two (42), wherein, Rib 1 (41) is located on the inner wall of the outer sleeve (3) and abuts against the outer wall of the bracket (9), and rib 2 (42) is located on the outer wall of the central boss (31) and abuts against the inner wall of the bracket (9).
2. The cap structure as described in claim 1, characterized in that, Both the first rib (41) and the second rib (42) have chamfered surfaces on their top surfaces, and the height of the first rib (41) is greater than the height of the second rib (42).
3. The cap structure as described in claim 1, characterized in that, The first rib (41) and the second rib (42) are arranged alternately.
4. The cap structure as described in claim 1, characterized in that, The outer wall of the cap outer tube (3) is provided with at least one deformation opening (5); A protrusion (6) is provided on both sides of the deformation opening (5) towards the outer wall of the outer sleeve (3); in When the protrusion (6) is squeezed, the two sides of the drive deformation opening (5) deform towards the center of the outer cylinder (3).
5. The cap structure as described in claim 4, characterized in that, A chamfered surface is provided on the top of the protrusion (6).
6. The cap structure as described in claim 1, characterized in that, The outer wall of the cap outer cylinder (3) is provided with at least one guide ridge (7).
7. The cap structure as described in claim 1, characterized in that, The outer peripheral surface of the central boss (31) is provided with a mirrored arc-shaped boss (32), and a weight-reducing groove is formed between adjacent arc-shaped bosses (32).
8. A cap structure characterized by, include: The cap outer tube (3) is set at the end of the pen body; Rib assembly (4), which is adapted to position bracket (9); The snap-fit element (8) is adapted to fix the bracket (9); and The locking component (8) includes at least one set of clips (81), with each set consisting of two clips (81); A slot (82) is formed between the two clips (81); wherein After the bracket (9) is assembled with the cap structure, the clip (91) on the bracket (9) is suitable for insertion into the slot (82).
9. The cap structure as described in claim 8, characterized in that, The rib assembly (4) includes rib one (41) and rib two (42). Ribs one (41) are evenly spaced on the inner wall of the cap outer cylinder (3); rib two (42) are evenly spaced on the outer wall of the central boss (31) of the cap outer cylinder (3); and Both the first rib (41) and the second rib (42) have chamfered surfaces on their upper surfaces; wherein After the bracket (9) and the cap structure are assembled, the outer wall of the bracket (9) abuts against the first rib (41), and the inner wall of the bracket (9) abuts against the second rib (42).
10. An injection pen characterized in that include: The outer shell (2), the bracket (9), and the cap structure as described in any one of claims 1-9; The outer shell (2) is fitted onto the cap structure, and the bracket (9) is fitted inside the cap structure.