CN216294044U

CN216294044U - Multi-gear adjusting and positioning structure

Info

Publication number: CN216294044U
Application number: CN202120120584.1U
Authority: CN
Inventors: 白书然
Original assignee: Yisheng Technology Tianjin Co ltd
Current assignee: Yisheng Technology Tianjin Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2022-04-15
Anticipated expiration: 2031-01-15

Abstract

The utility model discloses a multi-gear adjusting and positioning structure, which belongs to the field of medical equipment and comprises an upper positioning ring, a driving ring and a lifting ring which are coaxially arranged, wherein the upper positioning ring is fixedly arranged; the lower end of the inner ring of the driving ring is provided with a first spiral protrusion, the lifting ring is sleeved in the driving ring, the outer ring of the lifting ring is provided with a spiral groove, the first spiral protrusion is arranged in the spiral groove and moves relative to the first spiral protrusion, and the lifting ring moves up and down relative to the upper positioning ring; the lower end of the lifting ring is provided with a needle outlet hole. The utility model can realize the adjustment of multiple gears of the needle head, and the adjustment is stable, reliable and convenient.

Description

Multi-gear adjusting and positioning structure

Technical Field

The utility model belongs to the field of medical equipment, relates to a blood sampling pen, and particularly relates to a multi-gear adjusting and positioning structure.

Background

The blood taking needle is used for blood sampling, and conventional physical examination, blood sugar inspection etc. all need use the blood taking pen, and the blood taking pen is the one kind of blood taking needle, structurally adopts mechanical device more, and the syringe needle adopts jettison device, can accomplish almost completely accurate, quick, depth moderate degree, sharp route pierces through skin, greatly reduced patient's pain, make the sample get into a new development stage, solved two first generations of blood taking needles pain sense strong, wound big scheduling problem basically.

The existing blood taking needles commonly used in the market are similar to pistols and pens, can attract the attention of children and reduce the psychological pressure, have the same effect on adult patients, can adjust the extending length of the needle relative to the shell, but have the defects that the head of the disposable needle needs to be taken down and then installed, when the needle is adjusted to the maximum position in the adjustment process, the needle cannot protrude out of the shell, or when the needle protrudes too much in the minimum position, the needle needs to be reinstalled after the blood taking pen is reopened, and in the reinstallation process, the needle is exposed, the probability of cross infection is increased, the adjustment can be performed for multiple times, the installation and the adjustment are performed by depending on experience, and the repeated operation condition exists, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the description of the background art, the utility model provides a multi-gear adjusting and positioning structure, which can realize the adjustment of multiple gears of a needle head, is stable, reliable and convenient to adjust, is not easy to slip, has consistent extending distance of the needle head corresponding to each gear, is stable to adjust, has high up-and-down moving precision, and does not have the problem of deflection and dislocation.

In order to solve the technical problems, the utility model adopts the technical scheme that: the multi-gear adjusting and positioning structure comprises an upper positioning ring, a driving ring and a lifting ring which are coaxially arranged, wherein a limiting bulge is arranged on an outer ring below the upper positioning ring, a plurality of gear adjusting bulges are arranged at the upper end of an inner ring of the driving ring, and the limiting bulge is arranged corresponding to a groove formed by adjacent gear adjusting bulges so as to realize the positioning of a plurality of positions of the driving ring; the lower end of the inner ring of the driving ring is provided with a first spiral protrusion, the lifting ring is sleeved in the driving ring, the outer ring of the lifting ring is provided with a spiral groove, the first spiral protrusion is arranged in the spiral groove and moves relatively to the spiral groove, so that the lifting ring moves up and down relative to the upper positioning ring; the lower end of the lifting ring is provided with a needle outlet 54.

Furthermore, the upper end of the upper positioning ring is provided with a concave first positioning notch, and the inner ring of the upper positioning ring is provided with at least two first positioning bulges which are convexly arranged inwards.

By adopting the technical scheme, under the normal condition, the upper positioning ring is connected with the fixed cylinder of the blood sampling pen, the fixed cylinder is provided with the groove matched with the first positioning bulge, and the upper positioning ring is clamped on the fixed cylinder of the blood sampling pen through the matching of the upper positioning ring and the first positioning bulge.

Furthermore, the first positioning bulges are uniformly distributed relative to the axis of the upper positioning ring.

By adopting the technical scheme, the number of the first positioning bulges is not less than two, so that the first positioning bulges can be conveniently clamped in during assembly, and the fixed cylinder of the blood sampling pen cannot be damaged.

Further, the upper positioning ring, the driving ring and the lifting ring are all made of engineering plastics.

By adopting the technical scheme, the material is made of elastic plastic, so that the parts can be conveniently clamped, the matching structure and the assembling process are simplified, and the cost is reduced.

Furthermore, the diameter of the lower end of the upper positioning ring is smaller than that of the upper end of the upper positioning ring, the upper positioning ring extends into the driving ring, and the lower end of the upper positioning ring is provided with a barb-shaped first positioning boss.

Furthermore, two sides of the spiral groove are composed of a plurality of second spiral protrusions which are arranged discontinuously, and the second spiral protrusions are arranged in contact with and in clearance fit with the inner ring of the driving ring.

By adopting the technical scheme, the groove is formed between the adjacent second spiral protrusions and is matched with the first spiral protrusions, and when the lifting ring is assembled, the first spiral protrusions are aligned to the groove, so that the first spiral protrusions are arranged in the spiral groove, and the assembly of the driving ring and the lifting ring is realized.

Furthermore, the outer diameter of the driving ring is smaller than or equal to the outer diameter of the top end of the upper positioning ring, an arc protrusion is arranged at the lower end of the driving ring, and the outer diameter of the arc protrusion is larger than the outer diameter of the upper end of the driving ring.

Further, the lower extreme of going up the holding ring is equipped with second location breach, the upper end of lift ring is equipped with second location arch, second location arch is established in second location breach, and the two sets that slide from top to bottom.

Furthermore, the gear adjusting protrusions are arranged in a plurality of equal intervals.

Compared with the prior art, the utility model has the advantages and positive effects as follows:

(1) the needle head adjusting mechanism can realize the adjustment of multiple gears of the needle head, is stable, reliable and convenient to adjust, is not easy to slip, has the same extending distance of the needle head corresponding to each gear, is stable to adjust, has high up-and-down moving precision, can not cause the deflection dislocation problem, and has high safety and high stability.

(2) The lower end of the driving ring is provided with the arc bulge, the outer diameter of the arc bulge is larger than that of the upper end of the driving ring, the circular bulge is attractive on one hand, an operator is prevented from being scratched, safety is improved on the other hand, the circular bulge is convenient to pull out, the second spiral bulge is in clearance fit with the driving ring, the driving ring is prevented from loosening and shaking, and structural stability is guaranteed.

(3) The second positioning bulge is arranged in the second positioning notch, the second positioning bulge and the second positioning notch are arranged in a vertical sliding mode, the second positioning bulge and the second positioning notch are in clearance fit, the vertical movement precision of the lifting ring is achieved, and the vertical movement distance of the second positioning bulge in the second positioning notch is equivalent to the vertical movement distance of the lifting ring converted from the rotation of the first spiral bulge in the spiral groove.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a multi-gear adjusting and positioning structure of the present invention;

FIG. 2 is a cross-sectional view of the multi-gear adjustment positioning structure of the present invention;

FIG. 3 is a top view of the upper retaining ring of the present invention;

FIG. 4 is a schematic bottom view of the upper retaining ring of the present invention;

FIG. 5 is a top view of the drive ring of the present invention;

FIG. 6 is a schematic view of the drive ring of the present invention in elevation;

FIG. 7 is a schematic top view of the lift ring of the present invention;

FIG. 8 is a schematic bottom view of the lift ring of the present invention;

fig. 9 is an enlarged view of fig. 2 a of the present invention.

Reference numerals:

51. an upper positioning ring; 511. a first positioning projection; 512. a first positioning notch; 513. a limiting bulge; 514. a first positioning boss; 515. a second positioning notch; 52. a drive ring; 521. a gear adjusting bulge; 522. a first spiral protrusion; 523. a circular arc bulge; 53. a lifting ring; 531. a second positioning projection; 532. a helical groove; 533. a second spiral protrusion; 54. and (4) discharging a pinhole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Again, it should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

In order to make the objects, technical solutions and advantages of the present invention more apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 9, the multi-gear adjusting and positioning structure includes an upper positioning ring 51, a driving ring 52 and a lifting ring 53 coaxially disposed, a limiting protrusion 513 is disposed on an outer ring below the upper positioning ring 51, a plurality of gear adjusting protrusions 521 are disposed on an upper end of an inner ring of the driving ring 52, and the limiting protrusion 513 and the gear adjusting protrusions 521 are disposed correspondingly to realize positioning of a plurality of positions of the driving ring 52;

the lower end of the inner ring of the driving ring 52 is provided with first spiral protrusions 522 which are arranged at intervals, the lifting ring 53 is sleeved in the driving ring 52, the outer ring of the lifting ring 53 is provided with a spiral groove 532, the first spiral protrusions 522 are arranged in the spiral groove 532 and move relative to the spiral groove 532, the lifting ring 53 moves up and down relative to the upper positioning ring 51, and the lower end of the lifting ring 53 is provided with a pin outlet hole 54.

In the using process, the upper positioning ring 51 is arranged on the fixed cylinder of the blood sampling pen, a groove is arranged on the fixed cylinder, at least two first positioning bulges 511 which are convexly arranged inwards are arranged on the inner ring of the upper positioning ring 51, and the first positioning bulges 511 are clamped in the groove on the fixed cylinder, so that clamping and positioning are facilitated; the upper end of the upper positioning ring 51 is provided with a concave first positioning notch 512 corresponding to the bulge on the fixed cylinder, so that the upper positioning ring and the fixed cylinder do not rotate relatively in the circumferential position, and the stability is improved; two and relative axis equipartition settings of going up holding ring 51 are no less than to the quantity of first location arch 511, and the setting of first location arch 511 makes things convenient for the assembly card to go into, can not cause the damage to the solid fixed cylinder of blood sampling pen simultaneously.

In this embodiment, the upper positioning ring 51, the driving ring 52 and the lifting ring 53 are all made of engineering plastics, which facilitates the matching and clamping between parts, simplifies the matching structure and the assembly process, and reduces the cost, and the engineering plastics include, but are not limited to, polyamide, polycarbonate, polyoxymethylene, ABS resin, and polytetrafluoroethylene.

Go up the inside setting that the diameter of holding ring 51 lower extreme is less than the diameter of upper end and stretches into driving ring 52, the outside diameter setting of holding ring 51 lower extreme is gone up in spacing arch 513 protrusion, the lower extreme of going up holding ring 51 is equipped with first locating boss 514 of barb shape, the outside diameter setting of holding ring 51 lower extreme is gone up in the protruding outside diameter of first locating arch 511 protrusion, in the time of actual installation, owing to adopt engineering plastics, there is certain elasticity, go up the upper end that goes deep into driving ring 52 after holding ring 51 locks, form the cell body between the protruding 521 of adjacent gear regulation, spacing arch 513 card is inside above-mentioned cell body this moment, first locating boss 514 contacts with the stair structure that the protruding 521 bottom of gear regulation formed simultaneously, guarantee the cooperation location of holding ring 51 and driving ring 52 in axial direction, moreover, the steam generator is simple in structure, and is stable and reliable.

As shown in fig. 7, two sides of the spiral groove 532 are composed of a plurality of second spiral protrusions 533 which are arranged intermittently, and the second spiral protrusions 533 are arranged in contact with and in clearance fit with the inner ring of the driving ring 52, so that the driving ring 52 is prevented from shaking, and the stability is improved; the lower end of the driving ring 52 is provided with the arc protrusion 523, and the outer diameter of the arc protrusion 523 is larger than that of the upper end of the driving ring 52, so that the appearance is attractive, an operator is prevented from being scratched, the safety is improved, and the pulling-out is convenient; first spiral protrusion 522 is the segmentation setting, and second spiral protrusion 533 is also the segmentation setting, makes things convenient for the two to adorn the card and assemble, because the two all adopts the engineering plastics material, in the time of the sectional type installation, the joint cooperation back spiral setting can, after the assembly is accomplished like this, is difficult to dismantle, stable in structure, only can dismantle after destroying, long service life.

The lower end of the upper positioning ring 51 is provided with a second positioning notch 515, the upper end of the lifting ring 53 is provided with a second positioning protrusion 531, the second positioning protrusion 531 is arranged in the second positioning notch 515, the upper positioning protrusion and the second positioning protrusion are arranged in a vertical sliding manner, and are in clearance fit, so that the upper positioning ring 51 and the lifting ring 53 are prevented from rotating relatively, when the driving ring 52 is rotated, the lifting ring 53 moves along the axial direction under the action of the spiral groove 532, and the second positioning protrusion 531 moves up and down in the second positioning notch 515, which is equivalent to converting the rotation of the first spiral protrusion 522 in the spiral groove 532 into the vertical linear motion of the lifting ring 53; meanwhile, the two ends of the spiral groove 532 are not communicated but sealed, so that the up-and-down movement distance of the lifting ring 53 is limited, and the rotation angle of the lifting ring 53 is limited.

As shown in fig. 5 and 6, the number of the gear adjusting protrusions 521 is multiple and is arranged at equal intervals, the situation that repeated adjustment is performed when the gear is adjusted in an over-position mode is avoided, each gear is adjusted by the structure, the extending length of the needle head is fixed, the length of the needle head is gradually shortened or gradually lengthened from long to short, the process is gradual, the needle head is adjusted to a proper position, the needle head rotates in a whole circle, and the needle head is adjusted back again after being over-position.

The working principle is as follows:

in the in-process of using, go up holding ring 51 and connect on the fixed section of thick bamboo of blood sampling pen, the syringe needle stretches out through going out pinhole 54, the convenience is gone on the operation of pinprick to the patient, when needing to adjust, manual rotation driving ring 52, first spiral protrusion 522 is at helicla flute 532 internal rotation this moment, it reciprocates to drive lift ring 53, the regulation and the change of the relative lift ring 53 of syringe needle stretching out distance have been realized, at the in-process of adjusting, the protruding 513 of second location is with the protruding cell body cooperation that 521 formed of gear adjustment, the position of a cell body of every turn, adjust a gear, protruding 521 is equipped with a plurality ofly in gear adjustment, equidistant setting, so the distance of every 1 gear adjustment is fixed, the stable regulation of the relative lift ring 53 of syringe needle stretching out distance has been realized, whole simple structure, and is stable and reliable, and difficult for skidding.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. Location structure is adjusted to many grades, its characterized in that, including last holding ring (51), drive ring (52) and lift ring (53) of coaxial setting, the below outer lane of going up holding ring (51) is equipped with spacing arch (513), the inner circle upper end of drive ring (52) is equipped with a plurality of gears and adjusts protruding (521), the recess that protruding (521) formed is adjusted to spacing arch (513) and adjacent gear corresponds the setting, the lower extreme of drive ring (52) inner circle is equipped with first spiral protrusion (522), lift ring (53) cover is established in drive ring (52), the outer lane of lift ring (53) is equipped with helicla flute (532), establish in helicla flute (532) and two relative motion in first spiral protrusion (522), the lower extreme of lift ring (53) is equipped with out pinhole (54).

2. The multi-gear adjusting and positioning structure according to claim 1, wherein the upper end of the upper positioning ring (51) is provided with a first positioning notch (512) which is concave, and the inner ring of the upper positioning ring (51) is provided with a first positioning protrusion (511) which protrudes inwards.

3. The multi-gear adjusting and positioning structure as claimed in claim 2, wherein the first positioning protrusions (511) are uniformly arranged with respect to the axis of the upper positioning ring (51).

4. The multi-gear adjusting and positioning structure according to claim 3, wherein the upper positioning ring (51), the driving ring (52) and the lifting ring (53) are all made of engineering plastics.

5. The multi-gear adjusting and positioning structure according to claim 4, wherein the diameter of the lower end of the upper positioning ring (51) is smaller than that of the upper end thereof, the lower end of the upper positioning ring (51) extends into the interior of the driving ring (52), and the lower end of the upper positioning ring (51) is provided with a first positioning boss (514) in the shape of a barb.

6. The multiple-gear adjustment positioning structure according to claim 5, wherein the spiral groove (532) is formed by a plurality of second spiral protrusions (533) which are intermittently arranged on two sides, and the second spiral protrusions (533) are arranged in contact with and in clearance fit with the inner ring of the driving ring (52).

7. The multi-gear adjusting and positioning structure according to claim 6, wherein the outer diameter of the driving ring (52) is smaller than or equal to the outer diameter of the top end of the upper positioning ring (51), the lower end of the driving ring (52) is provided with a circular arc protrusion (523), and the outer diameter of the circular arc protrusion (523) is larger than the outer diameter of the upper end of the driving ring (52).

8. The multi-gear adjusting and positioning structure according to claim 7, wherein a second positioning notch (515) is formed at the lower end of the upper positioning ring (51), a second positioning protrusion (531) is formed at the upper end of the lifting ring (53), and the second positioning protrusion (531) is arranged in the second positioning notch (515) and slides up and down.