CN107648704B - Transmission structure for injector and injector - Google Patents
Transmission structure for injector and injector Download PDFInfo
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- CN107648704B CN107648704B CN201710585456.2A CN201710585456A CN107648704B CN 107648704 B CN107648704 B CN 107648704B CN 201710585456 A CN201710585456 A CN 201710585456A CN 107648704 B CN107648704 B CN 107648704B
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- 238000009434 installation Methods 0.000 claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 12
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- 238000013016 damping Methods 0.000 description 12
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- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 2
- 229940127560 insulin pen Drugs 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 102000004877 Insulin Human genes 0.000 description 1
- 108090001061 Insulin Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 235000005911 diet Nutrition 0.000 description 1
- 230000000378 dietary effect Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention belongs to the technical field of medical instruments, and discloses a transmission structure for an injector, which comprises an installation shell, wherein a cavity is arranged in the installation shell; the composite sleeve comprises an external sleeve and an internal sleeve, the external sleeve is sleeved outside the internal sleeve, the external sleeve is rotatably connected with the internal sleeve, the composite sleeve is installed inside the installation shell, and the composite sleeve is in sliding connection with the installation shell in the axial direction. The invention also discloses an injector with the transmission structure. The invention reduces the motion connection type between the transmission parts, so that only one motion relation exists between the parts, thereby ensuring that the transmission structure is more reliable, and the injector can provide more tactile stop feeling and more crisp rotation sound for a user.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a transmission structure for an injector and the injector.
Background
With the development of society, the change of living habits, the over-pressure of work and the change of dietary structure of people, more and more people suffer from long-term diseases, the medicine needs to be injected for a long time to maintain the health of the body, and the patients with the diseases have the trend of being younger. Therefore, the use of a convenient and reliable syringe is becoming more and more popular, but there are syringes in the market at present, such as insulin pens, which give users a unclear hand feeling in the process of adjusting the dosage, have poor subjective feeling, and cannot meet the requirements of users for high quality and high experience of life.
Based on the above situation, there is a need to design a syringe to solve the above problems and improve the user experience.
Disclosure of Invention
One object of the present invention is: the transmission structure for the syringe is provided, the motion connection types among parts are reduced, only one motion relation is formed among the parts, and therefore the transmission structure is more reliable.
Another object of the invention is: provided is a transmission structure for a syringe, which can provide a user with a more tactile stop feeling and a more crisp rotation sound.
Yet another object of the present invention is: an injector is provided, which reduces the moving connection types between parts, and ensures that only one mutual moving relation exists between the parts, thereby ensuring that a transmission structure is more reliable.
Yet another object of the present invention is: provided is a syringe which can provide a user with a more tactile stop feeling and a more crisp rotation sound.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, a transmission structure for a syringe is provided, including:
the mounting device comprises a mounting shell, a base and a base, wherein a cavity is arranged inside the mounting shell;
the composite sleeve comprises an external sleeve and an internal sleeve, the external sleeve is sleeved outside the internal sleeve, the external sleeve is rotatably connected with the internal sleeve, the composite sleeve is installed inside the installation shell, and the composite sleeve is in sliding connection with the installation shell in the axial direction.
Preferably, the inner side wall of the external sleeve is provided with a limiting step, the outer side wall of the internal sleeve is provided with a clamping block, and the limiting step is clamped with the clamping block and used for limiting mutual axial movement between the external sleeve and the internal sleeve.
Specifically, in the specific use process of the transmission structure, the mounting shell is static, the external sleeve makes linear motion along the axial direction of the external sleeve, and the internal sleeve makes linear motion along the axial direction of the internal sleeve and simultaneously makes rotary motion along the axial lead of the internal sleeve. If the built-in sleeve is in direct contact with the mounting shell and has a motion connection relationship, at least two different motion connection relationships, namely axial linear motion and relative rotation, must exist between the built-in sleeve and the mounting shell, so that the motion connection relationship leads to very complex stress between the built-in sleeve and the mounting shell, the damping force is fuzzy or too large, the overall texture of the product is reduced, and poor use experience of a user is caused.
The external sleeve is arranged between the internal sleeve and the mounting shell, so that the internal sleeve and the mounting shell have no direct motion connection relation, the external sleeve and the mounting shell only have axial sliding connection relation, the external sleeve and the internal sleeve only have connection relation rotating along an axial lead, and the simplification of the mutual motion relation between moving parts is realized, so that a transmission structure is more reliable, and tactile stop feeling and more crisp rotation sound can be provided for a user.
As a preferred technical scheme, built-in sleeve includes built-in long tube and sets up connector on the built-in long tube, external sleeve includes external long tube and sets up block on the external long tube, the connector embedding is installed in the block.
Preferably, the outer diameter of the connector is larger than that of the built-in long pipe.
Preferably, the outer diameter of the cap is larger than that of the external long tube.
Preferably, the connector is arranged at the axial end of the built-in long pipe.
Preferably, the cap is arranged at the axial end of the external long pipe.
Specifically, through setting up the cap cover is in the outside of connector makes the connector with installation casing is the interval each other, avoids the connector with kinematic connection between the installation casing to realize the simplification of the mutual motion relation between the moving part, effectively improve transmission structure's reliability.
As a preferred technical scheme, a first connecting piece is arranged on the outer side wall of the connector, a second connecting piece is arranged on the inner side wall of the cap, and the first connecting piece is rotatably connected with the second connecting piece and used for giving a stop feeling to a user and making a crisp sound in the process of adjusting the dosage of the syringe.
Specifically, the first connecting piece and the second connecting piece are mutually pressed at a local stage or position in the movement process to form a damping force so as to give a pause feeling and make a sound to a user.
As a preferred technical solution, the first connecting piece is one or more step spring pieces, the step spring pieces can deform in the radial direction under an external force, the second connecting piece is a saw tooth, and the step spring pieces are abutted against the saw tooth;
or the second connecting piece is one or more step elastic pieces, the step elastic pieces can deform along the radial direction under the external force, the first connecting piece is a sawtooth, and the step elastic pieces are abutted with the sawtooth.
Preferably, the first connecting piece or the second connecting piece is two step spring pieces, and the two step spring pieces are arranged in a central symmetry manner.
Preferably, the first connecting piece or the second connecting piece is four step spring pieces, and the four step spring pieces are arranged in a central symmetry mode.
Preferably, the step elastic sheet is made of plastic or metal.
As a preferred technical scheme, the step elastic sheet comprises an elastic pressing sheet and a boss, the elastic pressing sheet comprises a fixed end and a hanging end, and the boss is installed at the hanging end of the elastic pressing sheet.
Specifically, when the step elastic sheet is used as the first connecting piece, the fixed end is fixedly connected with the connector. When the step elastic sheet is used as the second connecting piece, the fixed end is fixedly connected with the cover cap.
Specifically, when the boss and the tooth tops of the saw teeth are pressed against each other, the elastic pressing piece will deform and generate a damping force, and when the boss enters the tooth space position of the saw teeth, the elastic pressing piece will eliminate deformation recovery and generate a crisp sound, so that the cycle can provide discontinuous damping force for a user to form a stop feeling.
As a preferable technical scheme, the cross section of the boss is triangular, trapezoidal or semicircular.
As a preferable technical solution, the first connecting member is one or more elastic columns, the elastic columns are radially deformable under an external force, the second connecting member is a saw tooth, and the elastic columns are abutted with the saw tooth.
The elastic column comprises a spring and a boss, the connector corresponds to the elastic column and is provided with a spring groove, the spring and the boss are inserted into the spring groove, one end of the boss exceeds the spring groove, and the boss can move along the axial reciprocating straight line of the spring groove.
Preferably, the first connecting member is two or four elastic columns.
As a preferable technical solution, the second connecting member is one or more elastic columns, the elastic columns are radially deformable under an external force, the first connecting member is a saw tooth, and the elastic columns are abutted with the saw tooth.
The elastic column comprises a spring and a boss, the cap is provided with a spring groove corresponding to the elastic column, the spring and the boss are inserted into the spring groove, one end of the boss exceeds the spring groove, and the boss can reciprocate linearly along the axial direction of the spring groove.
Preferably, the second connecting member is two or four elastic columns.
As a preferable technical solution, a third connecting member is disposed on an outer side wall of the cap, a fourth connecting member is disposed on an inner side wall of the mounting housing, and the third connecting member and the fourth connecting member are slidably connected in an axial direction.
Specifically, the third and fourth connecting members are used for limiting relative rotation between the cap and the mounting housing and guiding axial sliding between the cap and the mounting housing.
As a preferable technical solution, the third connecting member is one or more than one sliding block, the fourth connecting member is one or more than one sliding groove, the sliding groove extends along the axial direction of the mounting housing, and the sliding block is embedded in the sliding groove;
or, the fourth connecting piece is one or more than one sliding block, the sliding block extends along the axial direction of the mounting shell, the third connecting piece is one or more than one sliding groove, and the sliding block is embedded in the sliding groove.
Preferably, the number of the sliding blocks is equal to the number of the sliding grooves.
Preferably, the number of the sliding blocks is smaller than the number of the sliding grooves.
Preferably, the third connecting member is two sliding blocks, and the fourth connecting member is two sliding grooves.
Preferably, the third connecting member is four sliding blocks, and the fourth connecting member is four sliding grooves.
Preferably, the third connecting member is three sliding blocks, and the fourth connecting member is four sliding grooves.
Preferably, the fourth connecting member is two sliding blocks, and the third connecting member is two sliding grooves.
Preferably, the fourth connecting member is four sliding blocks, and the third connecting member is four sliding grooves.
Preferably, the fourth connecting member is three sliding blocks, and the third connecting member is four sliding grooves.
As a preferable technical scheme, the cross section of the sliding block is rectangular or triangular or trapezoidal or semicircular.
Preferably, the cross-sectional shape of the slider is the same as the cross-sectional shape of the notch of the chute.
In another aspect, an injector is provided, which includes the transmission structure for injector.
Preferably, the syringe is an insulin pen.
As a preferable technical scheme, the injector further comprises a scale sleeve and an ejector rod, the ejector rod is inserted into the built-in sleeve, and the ejector rod is in transmission connection with the built-in sleeve through threads; the scale sleeve is installed the inside of installation casing is located external telescopic outside, the telescopic lateral surface of scale with the installation casing passes through screw thread transmission and is connected, the telescopic medial surface of scale with external sleeve passes through screw thread transmission and is connected.
The invention has the beneficial effects that: the external sleeve is arranged between the internal sleeve and the mounting shell, so that the internal sleeve and the mounting shell have no direct motion connection relation, the motion connection types among transmission parts are reduced, and only one mutual motion relation exists among the parts, so that the transmission structure is more reliable, and the injector can provide a tactile stop feeling and a more crisp rotation sound for a user.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic cross-sectional view of a transmission structure for an injector according to a first embodiment;
FIG. 2 is a schematic structural diagram of a mounting housing according to a fourth embodiment;
FIG. 3 is a schematic structural view of a composite sleeve according to a fourth embodiment;
FIG. 4 is a cross-sectional schematic view of a composite sleeve according to embodiment four;
FIG. 5 is a schematic structural view of an outer sleeve according to a fourth embodiment;
FIG. 6 is a schematic structural view of an inner sleeve according to a fourth embodiment;
FIG. 7 is a schematic structural view of an inner sleeve according to a sixth embodiment;
FIG. 8 is a schematic structural view of an outer sleeve according to a seventh embodiment;
FIG. 9 is a schematic structural view of an inner sleeve according to a seventh embodiment;
FIG. 10 is a schematic view of an inner sleeve according to an eleventh embodiment;
fig. 11 is a schematic structural view of a syringe according to nineteenth embodiment.
In fig. 1 to 11:
1. installing a shell;
2. an external sleeve; 21. an external long tube; 22. capping;
3. a sleeve is arranged inside; 31. a long pipe is arranged inside; 32. a connector;
4. a step spring plate; 41. elastic tabletting; 42. a boss;
5. saw teeth;
6. a slider;
7. a chute;
8. a scale sleeve;
9. a top rod;
10. an elastic column.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows:
a transmission structure for a syringe, as shown in fig. 1, comprising: the mounting structure comprises a mounting shell 1, wherein a cavity is arranged inside the mounting shell 1; the composite sleeve comprises an external sleeve 2 and an internal sleeve 3, the external sleeve 2 is sleeved on the outer side of the internal sleeve 3, the external sleeve 2 is rotatably connected with the internal sleeve 3, the composite sleeve is installed inside the installation shell 1, and the composite sleeve is in sliding connection with the installation shell 1 only in the axial direction.
Specifically, in the specific use process of the transmission structure, the mounting shell 1 is stationary, the external sleeve 2 makes linear motion along the axial direction thereof, and the internal sleeve 3 makes linear motion along the axial direction thereof and simultaneously makes rotational motion along the axial lead thereof. If the built-in sleeve 3 is in direct contact with the mounting shell 1 and has a motion connection relationship, at least two different motion connection relationships, namely axial linear motion and relative rotation, must exist between the built-in sleeve 3 and the mounting shell 1, so that the motion connection relationship leads to very complex stress between the two, fuzzy damping force or overlarge damping force, and the overall texture of the product is reduced, thereby causing poor use experience of users. The external sleeve 2 is arranged between the internal sleeve 3 and the mounting shell 1, so that the internal sleeve 3 and the mounting shell 1 have no direct motion connection relation, only an axial sliding connection relation exists between the external sleeve 2 and the mounting shell 1, only a connection relation rotating along an axial lead exists between the external sleeve 2 and the internal sleeve 3, the simplification of the motion relation between moving parts is realized, a transmission structure is more reliable, and a tactile stop feeling and a more crisp rotation sound can be provided for a user.
An injector comprises the transmission structure for the injector. In this embodiment, the injector is an insulin pen having the above-mentioned transmission structure.
Example two:
the difference between this embodiment and the first embodiment is:
in this embodiment, built-in sleeve includes built-in long tube and sets up connector on the built-in long tube, external sleeve includes external long tube and sets up cap on the external long tube, the connector embedding is installed in the cap. The external diameter of connector is greater than the external diameter of built-in long tube, the external diameter of block is greater than the external diameter of external long tube, the connector sets up the axial tip of built-in long tube, the block sets up the axial tip of external long tube. Through setting up the bonnet cover is in the outside of connector makes the connector with the installation casing is the interval each other, avoids the connector with kinematic connection between the installation casing to realize the simplification of the mutual motion relation between the moving part, effectively improve transmission structure's reliability.
Be provided with first connecting piece on the lateral wall of connector, be provided with the second connecting piece on the inside wall of cap, first connecting piece with the second connecting piece rotates to be connected for give the user stop feeling and send clear and crisp sound at the dose in-process of adjusting the syringe. Specifically, the first connecting piece and the second connecting piece are mutually pressed at a local stage or position in the movement process to form a damping force so as to give a pause feeling and make a sound to a user.
The first connecting piece is two step elastic pieces which are arranged in a central symmetry mode, the step elastic pieces can deform in the radial direction under the action of external force, the second connecting piece is saw teeth, and the step elastic pieces are abutted to the saw teeth. The step elastic sheet is made of plastic. The step elastic sheet comprises an elastic pressing sheet and a boss, the elastic pressing sheet comprises a fixed end and a hanging end, the fixed end is fixedly connected with the connector, the boss is installed at the hanging end of the elastic pressing sheet, and the cross section of the boss is triangular. When the lug boss and the tooth tops of the sawteeth are mutually extruded, the elastic pressing sheet can generate deformation and generate damping force, and when the lug boss enters the tooth space position of the sawteeth, the elastic pressing sheet can eliminate deformation recovery and generate crisp sound, so that intermittent damping force can be provided for a user in a circulating mode to form stop feeling.
Example three:
the difference between this embodiment and the first embodiment is:
the outer side wall of the cap is provided with a third connecting piece, the inner side wall of the mounting shell is provided with a fourth connecting piece, and the third connecting piece is connected with the fourth connecting piece in a sliding mode in the axial direction. The third connecting piece and the fourth connecting piece are used for limiting relative rotation between the cover cap and the mounting shell and guiding axial sliding between the cover cap and the mounting shell.
In this embodiment, the third connecting members are four sliding blocks, the fourth connecting members are four sliding grooves, the sliding grooves extend along the axial direction of the mounting housing, and the sliding blocks are embedded in the sliding grooves. The cross section of the sliding block is rectangular, and the cross section of the notch of the sliding groove is the same as that of the sliding block.
Example four:
the difference between this embodiment and the first embodiment is:
as shown in fig. 2 to 6, in the present embodiment, the inner sleeve 3 includes an inner long tube 31 and a connecting head 32 disposed on the inner long tube 31, the outer sleeve 2 includes an outer long tube 21 and a cap 22 disposed on the outer long tube 21, and the connecting head 32 is embedded in the cap 22. The external diameter of connector 32 is greater than the external diameter of built-in long tube 31, the external diameter of block 22 is greater than the external diameter of external long tube 21, connector 32 sets up the axial tip of built-in long tube 31, block 22 sets up the axial tip of external long tube 21. Through setting up the block 22 covers the outside of connector 32 makes connector 32 with installation casing 1 is at an interval each other, avoids connector 32 with the kinematic connection between the installation casing 1 to realize the simplification of the mutual motion relation between the moving part, effectively improve transmission structure's reliability.
The outer side wall of the connector 32 is provided with a first connecting piece, the inner side wall of the cap 22 is provided with a second connecting piece, and the first connecting piece is rotatably connected with the second connecting piece and used for giving a stop feeling to a user and making a crisp sound in the process of adjusting the dosage of the syringe. Specifically, the first connecting piece and the second connecting piece are mutually pressed at a local stage or position in the movement process to form a damping force so as to give a pause feeling and make a sound to a user.
The first connecting piece is two step spring pieces 4, the two step spring pieces 4 are arranged in a central symmetry mode, the step spring pieces 4 can deform in the radial direction under the action of external force, the second connecting piece is a sawtooth 5, and the step spring pieces 4 are abutted to the sawtooth 5. The step elastic sheet 4 is made of plastic. Step shell fragment 4 includes elasticity preforming 41 and boss 42, elasticity preforming 41 includes stiff end and free end, the stiff end with connector 32 fixed connection, boss 42 is installed the free end of elasticity preforming 41, boss 42's cross sectional shape is triangle-shaped. When the boss 42 and the tooth tops of the saw teeth 5 are pressed against each other, the elastic pressing piece 41 will deform and generate a damping force, and when the boss 42 enters the tooth space position of the saw teeth 5, the elastic pressing piece 41 will eliminate deformation and restore, and generate a crisp sound, so that the circulation can provide an intermittent damping force for a user to form a stop feeling.
A third connecting piece is arranged on the outer side wall of the cap 22, a fourth connecting piece is arranged on the inner side wall of the mounting shell 1, and the third connecting piece and the fourth connecting piece are in sliding connection in the axial direction. The third and fourth connecting members are used for limiting the relative rotation between the cap 22 and the mounting housing 1 and guiding the axial sliding between the cap 22 and the mounting housing 1.
In this embodiment, the third connecting members are four sliding blocks 6, the fourth connecting members are four sliding grooves 7, the sliding grooves 7 extend along the axial direction of the mounting housing 1, and the sliding blocks 6 are embedded in the sliding grooves 7. The cross section of the sliding block 6 is rectangular, and the cross section of the notch of the sliding groove 7 is the same as that of the sliding block 6.
Example five:
the present embodiment is different from the fourth embodiment in that:
the external diameter of connector equals the external diameter of built-in long tube, the external diameter of block is greater than the external diameter of external long tube. In other embodiments, the outer diameter of the connector is equal to the outer diameter of the inner long tube, and the outer diameter of the cap is equal to the outer diameter of the outer long tube. Or the outer diameter of the connector is smaller than that of the built-in long pipe, and the outer diameter of the cap is equal to that of the external long pipe. Or the outer diameter of the connector is smaller than that of the built-in long pipe, and the outer diameter of the cap is smaller than that of the external long pipe. Or the outer diameter of the connector is larger than that of the built-in long pipe, and the outer diameter of the cap is smaller than that of the external long pipe.
Example six:
the present embodiment is different from the fourth embodiment in that:
as shown in fig. 7, the first connecting member is four step spring pieces 4, the four step spring pieces 4 are arranged in a central symmetry manner, the step spring pieces 4 can deform in the radial direction under the action of external force, the second connecting member is a sawtooth, and the step spring pieces 4 are abutted to the sawtooth. Step shell fragment 4 includes elasticity preforming 41 and boss 42, elasticity preforming 41 includes stiff end and free end, the stiff end with connector 32 fixed connection, boss 42 is installed the free end of elasticity preforming 41. In other embodiments, the first connecting member is a step spring. Or, the first connecting piece is a three-step elastic piece. Or, the first connecting piece is a five-step elastic piece. Or, the first connecting piece is a six-step elastic piece.
Example seven:
the present embodiment is different from the fourth embodiment in that:
as shown in fig. 8 and 9, the second connecting member is two step spring pieces 4, the two step spring pieces 4 are arranged in a central symmetry manner, the step spring pieces 4 can deform in the radial direction under the action of external force, the first connecting member is a sawtooth 5, and the step spring pieces 4 are abutted to the sawtooth 5. The step spring plate 4 comprises an elastic pressing plate 41 and a boss 42, the elastic pressing plate 41 comprises a fixed end and a hanging end, the fixed end is fixedly connected with the cover cap 22, and the boss 42 is installed at the hanging end of the elastic pressing plate 41.
Example eight:
the present embodiment is different from embodiment seven in that:
the second connecting piece is four step elastic pieces which are arranged in a central symmetry mode, the step elastic pieces can deform in the radial direction under the action of external force, the first connecting piece is a sawtooth, and the step elastic pieces are abutted to the sawtooth. In other embodiments, the second connector is a step spring. Or, the second connecting piece is three step elastic pieces. Or, the second connecting piece is a five-step elastic piece. Or the second connecting piece is a six-step elastic piece.
Example nine:
the present embodiment is different from the fourth embodiment in that:
the step elastic sheet is made of metal.
Example ten:
the present embodiment is different from the fourth embodiment in that:
the cross-sectional shape of the boss is trapezoidal. In other embodiments, the cross-sectional shape of the boss is semi-circular.
Example eleven:
the present embodiment is different from the fourth embodiment in that:
as shown in fig. 10, the first connecting members are four elastic columns 10, the four elastic columns 10 are equidistantly distributed on the outer side surface of the connector 32, the elastic columns 10 can deform in the radial direction under an external force, the second connecting members are saw teeth, and the elastic columns 10 are abutted to the saw teeth. The elastic column 10 comprises a spring and a boss, the connector 32 corresponds to the elastic column 10 and is provided with a spring groove, the spring and the boss are inserted into the spring groove, one end of the boss exceeds the spring groove, and the boss can move along the axial reciprocating straight line of the spring groove.
Example twelve:
the present embodiment differs from embodiment eleven in that:
the first connecting piece is two elastic columns which are distributed on the outer side surface of the connector at equal intervals, the elastic columns can deform along the radial direction under the external force, the second connecting piece is a saw tooth, and the elastic columns are abutted to the saw tooth. In other embodiments, the first connecting member is an elastic column. Alternatively, the first connecting member is three elastic columns. Alternatively, the first connecting member is five elastic columns. Alternatively, the first connecting member is six elastic columns.
Example thirteen:
the present embodiment is different from the fourth embodiment in that:
the second connecting piece is four elastic columns which are distributed on the inner side surface of the cover cap at equal intervals, the elastic columns can deform along the radial direction under the action of external force, the first connecting piece is a saw tooth, and the elastic columns are abutted to the saw tooth. The elastic column comprises a spring and a boss, the cap is provided with a spring groove corresponding to the elastic column, the spring and the boss are inserted into the spring groove, one end of the boss exceeds the spring groove, and the boss can reciprocate linearly along the axial direction of the spring groove.
Example fourteen:
the present embodiment is different from embodiment thirteen in that:
the second connecting piece is two elastic columns which are distributed on the outer side surface of the cover cap at equal intervals, the elastic columns can deform along the radial direction under the action of external force, the first connecting piece is a saw tooth, and the elastic columns are abutted to the saw tooth. In other embodiments, the second connector is an elastic post. Alternatively, the second connector is three resilient posts. Alternatively, the second connecting member is five elastic columns. Alternatively, the second connector is six resilient posts.
Example fifteen:
the present embodiment is different from the fourth embodiment in that:
the third connecting piece is two sliding blocks, the fourth connecting piece is two sliding grooves, the sliding grooves extend along the axial direction of the mounting shell, and the sliding blocks are embedded in the sliding grooves. In other embodiments, the third connecting member is a slider and the fourth connecting member is a chute. Or, the third connecting piece is a sliding block, and the fourth connecting piece is two sliding grooves. Or, the third connecting piece is three sliding blocks, and the fourth connecting piece is four sliding grooves.
Example sixteen:
the present embodiment is different from the fourth embodiment in that:
the fourth connecting pieces are four sliding blocks, the sliding blocks extend along the axial direction of the mounting shell, the third connecting pieces are four sliding grooves, and the sliding blocks are embedded in the sliding grooves.
Example seventeen:
this embodiment differs from embodiment sixteen in that:
the fourth connecting piece is two sliding blocks, the sliding blocks extend along the axial direction of the mounting shell, the third connecting piece is two sliding grooves, and the sliding blocks are embedded in the sliding grooves. In other embodiments, the fourth connecting member is a slider and the third connecting member is a chute. Or, the fourth connecting piece is a sliding block, and the third connecting piece is two sliding grooves. Or, the fourth connecting piece is three sliding blocks, and the third connecting piece is four sliding grooves.
Example eighteen:
the present embodiment is different from the fourth embodiment in that:
the cross section of the sliding block is triangular, and the cross section of the notch of the sliding groove is the same as that of the sliding block. In other embodiments, the slider has a trapezoidal or semicircular cross-sectional shape.
Example nineteenth:
the difference between this embodiment and the first embodiment is:
the inner side wall of the external sleeve 2 is provided with a limiting step, the outer side wall of the internal sleeve 3 is provided with a clamping block, and the limiting step is clamped with the clamping block and used for limiting mutual axial movement between the external sleeve 2 and the internal sleeve 3.
As shown in fig. 11, the injector further comprises a scale sleeve 8 and a push rod 9, wherein the push rod 9 is inserted into the built-in sleeve 3, and the push rod 9 is in transmission connection with the built-in sleeve 3 through threads; the scale sleeve 8 is installed the inside of installation casing 1 is located the outside of external sleeve 2, the lateral surface of scale sleeve 8 with installation casing 1 is connected through screw thread transmission, the medial surface of scale sleeve 8 with external sleeve 2 is connected through screw thread transmission. In the process of adjusting the scale by rotating the scale sleeve 8, the scale sleeve 8 and the mounting housing 1 are displaced in the axial direction, in addition, the scale sleeve 8 drives the outer sleeve 2 and the inner sleeve 3 to move, so that the outer sleeve 2 and the mounting housing 1 are displaced in the axial direction, when the inner sleeve 3 follows the outer sleeve 2 to be displaced in the axial direction, the inner sleeve 3 and the outer sleeve 2 are relatively rotated, the inner sleeve 3 gives a pause feeling to a user and generates a rotation sound in the rotation process, the rotation of the inner sleeve 3 causes the ejector rod 9 and the inner sleeve 3 to be relatively displaced, but the displacement direction of the ejector rod 9 relative to the inner sleeve 3 is opposite to the displacement direction of the inner sleeve 3 relative to the mounting housing 1, and the displacement is of equal magnitude, so that the ram 9 is stationary relative to the mounting housing 1.
The terms "first", "second", "third" and "fourth" are used herein for descriptive purposes only and are not intended to have any special meaning.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and the technical principles used, and any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the protective scope of the present invention.
Claims (7)
1. A transmission structure for a syringe, comprising:
the mounting device comprises a mounting shell, a base and a base, wherein a cavity is arranged inside the mounting shell;
the composite sleeve comprises an external sleeve and an internal sleeve, the external sleeve is sleeved outside the internal sleeve and is rotatably connected with the internal sleeve, the composite sleeve is installed inside the installation shell, and the composite sleeve is connected with the installation shell in a sliding mode in the axial direction;
the built-in sleeve comprises a built-in long pipe and a connector arranged on the built-in long pipe, the external sleeve comprises an external long pipe and a cap arranged on the external long pipe, and the connector is embedded in the cap;
a third connecting piece is arranged on the outer side wall of the cap, a fourth connecting piece is arranged on the inner side wall of the mounting shell, and the third connecting piece and the fourth connecting piece are in sliding connection in the axial direction;
the outer side wall of the connector is provided with a first connecting piece, the inner side wall of the cover cap is provided with a second connecting piece, and the first connecting piece is rotatably connected with the second connecting piece and used for giving a stop feeling and making a sound to a user in the process of adjusting the dosage of the injector.
2. The transmission structure of claim 1, wherein the first connecting member is one or more step spring pieces, the step spring pieces are radially deformable under an external force, the second connecting member is a saw tooth, and the step spring pieces are abutted against the saw tooth;
or the second connecting piece is one or more step elastic pieces, the step elastic pieces can deform along the radial direction under the external force, the first connecting piece is a sawtooth, and the step elastic pieces are abutted with the sawtooth.
3. The transmission structure of claim 2, wherein the step spring comprises an elastic pressing plate and a boss, the elastic pressing plate comprises a fixed end and a free end, and the boss is mounted on the free end of the elastic pressing plate.
4. The transmission structure of claim 3, wherein the cross-sectional shape of the projection is triangular, trapezoidal or semicircular.
5. The transmission structure according to any one of claims 1 to 4, wherein the third connecting member is one or more than one sliding block, the fourth connecting member is one or more than one sliding groove, the sliding groove extends along the axial direction of the mounting housing, and the sliding block is embedded in the sliding groove;
or, the fourth connecting piece is one or more than one sliding block, the sliding block extends along the axial direction of the mounting shell, the third connecting piece is one or more than one sliding groove, and the sliding block is embedded in the sliding groove.
6. The transmission structure of claim 5, wherein the slider has a rectangular or triangular or trapezoidal or semicircular cross-sectional shape.
7. An injector comprising the transmission structure for an injector according to any one of claims 1 to 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594039X | 2016-07-26 | ||
| CN201610594039 | 2016-07-26 |
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| CN107648704B true CN107648704B (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710585456.2A Active CN107648704B (en) | 2016-07-26 | 2017-07-18 | Transmission structure for injector and injector |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110400509B (en) * | 2019-07-30 | 2021-04-13 | 宁波睿爱产品设计有限公司 | Injection training device with sound prompt function |
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| CN107648704A (en) | 2018-02-02 |
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Address after: 523808 No.1, Gongye North Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Guangdong Dongyangguang Pharmaceutical Co.,Ltd. Address before: 523808 No. 1 Industrial North Road, Songshan Industrial Park, Songshan, Guangdong, Dongguan, Hubei Patentee before: SUNSHINE LAKE PHARMA Co.,Ltd. |
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