A manipulation assembly and an injection device

Abstract

The utility model discloses a kind of operating assembly and injection device, the operating assembly includes pressing piece, knob piece and support component;The first cooperation part is provided on the support component;The knob piece is installed on support component;The pressing piece is synchronously rotated with knob piece and can be moved relative to knob piece;The second cooperation part is provided on the pressing piece;The second cooperation part is used for with the first cooperation part engagement or separation along with the movement of pressing piece;When the second cooperation part and the first cooperation part engage, limit the rotation of pressing piece.The first cooperation part is the multiple first meshing teeth that circumferential arrangement is on support component, and the second cooperation part is the second meshing tooth for being set on pressing piece and being used for with the first cooperation part meshing.The utility model can avoid pressing piece and knob piece rotation during injection by reasonably setting pressing piece, knob piece and support component.

Description

Technical Field

[0001] This utility model relates to a control component and an injection device. Background Technology

[0002] Injection devices are often equipped with control components, which include a pressing element, a knob element, and a support member. The knob element is mounted on the support member and is used to control the injection dose setting of the injection device when rotated. The pressing element is movably mounted on the support member and is used to control the injection of the injection device.

[0003] However, during injection, accidental manual contact may cause the knob to rotate. Some injection devices also have a dose accumulation function, which calculates the total injection dose by accumulating the total number of knob rotations over all injections. Limiting the total injection dose can improve safety. However, accidental knob rotation during injection can easily affect the accuracy of the dose accumulation, thus failing to meet the high requirements of the industry. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a control component that, by reasonably arranging the pressing component, the knob component, and the support component, can prevent the pressing component and the knob component from rotating during injection.

[0005] The second objective of this invention is to provide an injection device that employs the aforementioned control components, which can prevent the pressing and rotating parts from rotating during injection.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] A control component includes a press element, a knob element, and a support element;

[0008] The supporting member is provided with a first mating part;

[0009] The knob is mounted on the support member;

[0010] The pressing member and the knob member rotate synchronously and can move relative to the knob member; the pressing member is provided with a second mating part; the second mating part is used to engage or disengage with the first mating part as the pressing member moves; when the second mating part engages with the first mating part, it restricts the rotation of the pressing member.

[0011] The first mating part consists of a plurality of first meshing teeth arranged circumferentially on the support member, and the second mating part consists of a second meshing tooth disposed on the pressing member and used to mesh with the first mating part.

[0012] The pressing member is provided with a connecting wing, and the second meshing tooth is provided on the connecting wing.

[0013] The knob is provided with an inner flange for limiting the position of the connecting wing, and the inner flange and the first mating part form an active range for the connecting wing to move.

[0014] The pressing component has several connecting wings arranged circumferentially, and each connecting wing is provided with a second meshing tooth.

[0015] The knob is provided with an insertion slot, and the pressing part is provided with a push arm that passes through the insertion slot.

[0016] The knob includes an outer ring wall, a central post, and a connecting wall; the central post is located inside the outer ring wall; the connecting wall is disposed between the outer ring wall and the central post; and the insertion slot is disposed on the connecting wall.

[0017] The extension trajectory of the insert slot is arc-shaped, and the extension trajectory of the push arm is consistent with the extension trajectory of the insert slot.

[0018] One of the support member and the knob is provided with a circumferential protrusion, and the other is provided with a circumferential groove. The circumferential groove and the circumferential protrusion are engaged in a rotatable manner.

[0019] The second objective of this utility model is achieved by the following technical solution:

[0020] The injection device includes the aforementioned control components.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: by combining a pressing part, a knob part, and a supporting member, and by reasonably setting the cooperation relationship between the pressing part and the knob part, and by providing a first cooperating part on the supporting member and a second cooperating part on the pressing part, when injection is required, the pressing part can be pushed to engage the second cooperating part with the first cooperating part. The engagement of the second cooperating part with the first cooperating part restricts the rotation of the pressing part relative to the supporting member, thereby restricting the rotation of the knob part during injection. This can prevent the knob part from rotating due to accidental human contact during injection. Moreover, its structure is compact, easy to install, and conducive to promotion. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the control component of this utility model;

[0023] Figure 2 This is a schematic diagram showing the cooperation between the worm gear and the helical track in the control component of this utility model;

[0024] Figure 3 This is an exploded view of the control component of this utility model;

[0025] Figure 4This is a schematic diagram of the structure of the fixed base;

[0026] Figure 5 This is a structural diagram of the knob component;

[0027] Figure 6 This is a structural diagram of the knob component from another direction.

[0028] Figure 7 This is a schematic diagram of the pressing component;

[0029] Among them, 10 is a knob; 11 is an inner flange; 12 is an insert groove; 13 is an annular groove; 14 is an outer annular wall; 15 is a central column; 16 is a connecting wall; 17 is an inner cylinder; 18 is a connecting flap; 20 is a pressing part; 21 is a second mating part; 22 is a connecting wing; 23 is a push arm; 24 is a top wall; 25 is a circumferential wall; 30 is a supporting member; 31 is a first mating part; 32 is an circumferential protrusion; 33 is a spiral track; 34 is a housing; 35 is a fixed seat; and 40 is a worm gear. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] like Figure 1-7 As shown, a control assembly includes a pressing member 20, a knob member 10, and a support member 30;

[0032] The support member 30 is provided with a first mating part 31;

[0033] The knob 10 is mounted on the support member 30;

[0034] The pressing member 20 rotates synchronously with the knob member 10 and can move relative to the knob member 10; the pressing member 20 is provided with a second mating part 21; the second mating part 21 is used to engage or disengage with the first mating part 31 as the pressing member 20 moves; when the second mating part 21 engages with the first mating part 31, it restricts the rotation of the pressing member 20.

[0035] When injection is required, the second mating part 21 moves toward the first mating part 31 by pushing the pressing member 20. When the second mating part 21 engages with the first mating part 31, the rotation of the pressing member 20 relative to the support member 30 is restricted. Since the pressing member 20 and the knob 10 rotate synchronously, the rotation of the knob 10 is restricted during injection. After injection, the second mating part 21 is separated from the first mating part 31 by moving the pressing member 20 in the opposite direction, thereby releasing the restriction and allowing the pressing member 20 and the knob 10 to rotate relative to the support member 30. Therefore, the present invention provides... A control component employs a combination of a press member 20, a knob member 10, and a support member 30. By rationally configuring the mating relationships between the press member 20 and the knob member 10, and between the knob member 10 and the support member 30, and by providing a first mating part 31 on the support member 30 and a second mating part 21 on the press member 20, when injection is required, the press member 20 can be pushed to engage the second mating part 21 with the first mating part 31. This engagement restricts the rotation of the press member 20, thereby limiting the rotation of the knob member 10 during injection.

[0036] The first mating part 31 consists of a plurality of first meshing teeth arranged circumferentially on the support member 30, and the second mating part 21 consists of a second meshing tooth disposed on the pressing member 20 and used to mesh with the first mating part 31. In use, the second meshing tooth engages with the first meshing tooth in a meshing manner, which can restrict the rotation of the pressing member 20 relative to the support member 30.

[0037] Of course, in addition to this, the first mating part 31 and the second mating part 21 can adopt other structures, as long as the pressing member 20 can be restricted from rotating relative to the supporting member 30 when they are engaged. For example, the first mating part 31 can be a plurality of slots arranged circumferentially on the supporting member 30, and the second mating part 21 can be a protrusion provided on the pressing member 20 and used to be embedded in the slot. However, the first mating part 31 can be made into a first meshing tooth and the second mating part 21 can be made into a second meshing tooth. This is the optimal embodiment of the present invention, which can restrict the rotation of the pressing member 20 relative to the supporting member 30 when they are engaged, and the engagement is stable and convenient for processing.

[0038] The pressing member 20 is provided with a connecting wing 22, and the second meshing tooth is provided on the connecting wing 22.

[0039] As a further preferred embodiment of the present invention, the pressing member 20 has a plurality of connecting wings 22 arranged circumferentially, and each connecting wing 22 is provided with a second meshing tooth.

[0040] Of course, the number of connecting wings 22 can be set according to actual needs, for example, it can be set to one, two, or more. However, the optimal embodiment of this utility model is that a number of connecting wings 22 are arranged circumferentially on the pressing member 20, and each connecting wing 22 is provided with a second meshing tooth, which can improve the stability of the engagement between the first mating part 31 and the second mating part 21.

[0041] The knob 10 is provided with an inner flange 11 for limiting the movement of the connecting wing 22. The inner flange 11 and the first mating part 31 form an active range for the connecting wing 22 to move. When injection is required, the pressing member 20 is pushed to move the connecting wing 22 toward the first mating part 31 within the active range. When the second mating part 21 on the connecting wing 22 engages with the first mating part 31, the rotation of the pressing member 20 relative to the supporting member 30 is restricted. After injection, the connecting wing 22 moves toward the inner flange 11 along with the pressing member 20 within the active range, and the second mating part 21 separates from the first mating part 31. When the connecting wing 22 moves to a position abutting against the inner flange 11, the inner flange 11 acts as a limiter to prevent the pressing member 20 from disengaging from the knob 10.

[0042] The knob 10 is provided with an insertion slot 12, and the pressing member 20 is provided with a push arm 23 that passes through the insertion slot 12. When the knob 10 rotates, the pressing member 20 and the knob 10 rotate synchronously through the cooperation of the push arm 23 and the insertion slot 12. When the knob 10 stops rotating, the pressing member 20 and the knob 10 stop rotating synchronously through the cooperation of the push arm 23 and the insertion slot 12. Thus, the pressing member 20 and the knob 10 rotate synchronously. When the pressing member 20 is pushed, the push arm 23 moves within the insertion slot 12, allowing the pressing member 20 to move relative to the knob 10. Therefore, by providing the insertion slot 12 on the knob 10 and the push arm 23 on the pressing member 20 that passes through the insertion slot 12, the pressing member 20 and the knob 10 can rotate synchronously and move relative to the knob 10.

[0043] Of course, in order to achieve synchronous rotation and engagement between the pressing member 20 and the knob member 10, and to allow them to move relative to the knob member 10, the structure is not limited to the above. Other structures can also be used. For example, a guide strip can be provided on the knob member 10, and a guide groove for inserting the guide strip can be provided on the pressing member 20. However, an insertion groove 12 can be provided on the knob member 10, and a push arm 23 inserted into the insertion groove 12 can be provided on the pressing member 20. This is the most preferred embodiment of the present invention, which can achieve synchronous rotation and engagement between the pressing member 20 and the knob member 10, and allow them to move relative to the knob member 10, while also facilitating processing and assembly.

[0044] The knob component 10 includes an outer ring wall 14, a central post 15, and a connecting wall 16; the central post 15 is located inside the outer ring wall 14; the connecting wall 16 is disposed between the outer ring wall 14 and the central post 15; and the insertion slot 12 is disposed on the connecting wall 16. Specifically, the connecting wall 16 is provided with a through slot for the connecting wing 22 to pass through. The connecting wall 16 includes an inner cylinder 17 and a plurality of connecting petals 18; the plurality of connecting petals 18 are arranged circumferentially around the central axis of the inner cylinder 17, and each connecting petal 18 is connected between the inner cylinder 17 and the outer ring wall 14. The insertion slot 12 is located on the end face of the inner cylinder 17, and the through slot is formed between any two adjacent connecting petals 18.

[0045] Of course, the structure of the knob 10 can be set according to actual needs, but adopting the above structure is the optimal implementation of this utility model, which can optimize the position of the insertion slot 12.

[0046] The extension trajectory of the insertion slot 12 is arc-shaped, and the extension trajectory of the push arm 23 is consistent with the extension trajectory of the insertion slot 12.

[0047] Of course, the extension trajectory of the insertion slot 12 and the push wall can also be set to a straight line or other shapes according to actual needs. However, making the extension trajectory of the insertion slot 12 arc-shaped and the extension trajectory of the push arm 23 consistent with the extension trajectory of the insertion slot 12 is the most preferred embodiment of this utility model, which can facilitate processing.

[0048] In this embodiment, the knob 10 is provided with at least two insertion slots 12 around its circumference, and the pressing member 20 is provided with at least two push arms 23 that correspond one-to-one with the at least two insertion slots 12 and are inserted into the corresponding insertion slots 12.

[0049] Of course, the number of the insertion slots 12 is not limited and can be set according to actual needs. The number of the push arms 23 corresponds to the number of insertion slots 12.

[0050] One of the support member 30 and the knob member 10 is provided with an circumferential protrusion 32, and the other is provided with an annular groove 13. The annular groove 13 and the circumferential protrusion 32 are engaged in a rotatable manner.

[0051] In this embodiment, the circumferential protrusion 32 is disposed on the support member 30, and the annular groove 13 is disposed on the knob member 10. Specifically, the outer annular wall 14 of the knob member 10 is fitted onto the support member 30, and the annular groove 13 is disposed on the outer annular wall 14.

[0052] Of course, in addition, the circumferential protrusion 32 can also be provided on the knob 10, and the annular groove 13 is correspondingly provided on the support member 30.

[0053] The pressing member 20 includes a top wall 24 and a circumferential wall 25, the circumferential wall 25 surrounding the edge of the top wall 24 and extending downward. The connecting wing 22 is disposed on the circumferential wall 25 of the pressing member 20, and the pushing arm 23 is disposed on the top wall 24 of the pressing member 20.

[0054] Of course, the structure of the pressing member 20 can be set according to the actual situation, but the combination of the top wall 24 and the circumferential wall 25 is the most preferred embodiment of this utility model, which can facilitate processing and facilitate the reasonable setting of the positions of the connecting wing 22 and the pushing arm 23.

[0055] In this embodiment, the support member 30 may include a housing 34 and a fixing seat 35; the fixing seat 35 is disposed on the housing 34, the first mating part 31 is disposed on the fixing seat 35, and the circumferential protrusion 32 is disposed on the housing 34.

[0056] Of course, in addition to this, the support member 30 can also be set according to actual needs, for example, it can be set as an integrally formed support body, etc.

[0057] In a further preferred embodiment of this utility model, a worm gear 40 is rotatably mounted on the knob 10, and a spiral track 33 with a spiral extension trajectory is provided on the support member 30. The worm gear 40 meshes with the spiral track 33. When the knob 10 is rotated to set the injection dosage, the worm gear 40 rotates under the drive of the knob 10 and the spiral track 33. Thus, the total number of rotations of the worm gear 40 indicates the total number of rotations of the knob 10 for all injections. The worm gear 40 is also provided with a worm gear stop. In this embodiment, the knob 10 drives the worm gear 40 to rotate. One rotation of the knob 10 corresponds to one tooth rotation of the worm gear 40. When the total injection dosage reaches the maximum limit value, the knob 10 engages with the worm gear stop, and the knob 10 cannot rotate. At this time, dosage setting is impossible. Therefore, the cooperation between the worm gear 40 and the spiral track 33 limits the total maximum injection volume for all injections, ensuring safety during use.

[0058] This utility model also discloses an injection device, including the aforementioned control components, so that when the injection device needs to inject, the pressing member 20 can be pushed to engage the second mating part 21 with the first mating part 31. The engagement of the second mating part 21 with the first mating part 31 restricts the rotation of the pressing member 20 relative to the support member 30, thereby restricting the rotation of the knob member 10 during injection. The injection device can be a syringe, injection pen, or other various injection devices.

[0059] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A control component, characterized in that: Includes push-button components, knob components, and support components; The supporting member is provided with a first mating part; The knob is mounted on the support member; The pressing member and the knob member rotate synchronously and can move relative to the knob member; the pressing member is provided with a second mating part; the second mating part is used to engage or disengage with the first mating part as the pressing member moves; when the second mating part engages with the first mating part, it restricts the rotation of the pressing member.

2. The control component as described in claim 1, characterized in that: The first mating part consists of a plurality of first meshing teeth arranged circumferentially on the support member, and the second mating part consists of a second meshing tooth disposed on the pressing member and used to mesh with the first mating part.

3. The control component as described in claim 2, characterized in that: The pressing member is provided with a connecting wing, and the second meshing tooth is provided on the connecting wing.

4. The control component as described in claim 3, characterized in that: The knob is provided with an inner flange for limiting the position of the connecting wing, and the inner flange and the first mating part form an active range for the connecting wing to move.

5. The control component as described in claim 3, characterized in that: The pressing component has several connecting wings arranged circumferentially, and each connecting wing is provided with a second meshing tooth.

6. The control component as described in claim 1, characterized in that: The knob is provided with an insertion slot, and the pressing part is provided with a push arm that passes through the insertion slot.

7. The control component as described in claim 6, characterized in that: The knob includes an outer ring wall, a central post, and a connecting wall; the central post is located inside the outer ring wall; the connecting wall is disposed between the outer ring wall and the central post; and the insertion slot is disposed on the connecting wall.

8. The control component as described in claim 7, characterized in that: The extension trajectory of the insert slot is arc-shaped, and the extension trajectory of the push arm is consistent with the extension trajectory of the insert slot.

9. The control component as claimed in claim 1, characterized in that: One of the support member and the knob is provided with a circumferential protrusion, and the other is provided with a circumferential groove. The circumferential groove and the circumferential protrusion are engaged in a rotatable manner.

10. An injection device, characterized in that: Includes the control components as described in any one of claims 1-9.

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