CN220791475U

CN220791475U - Fool-proof structure of pressure pump and pressure pump

Info

Publication number: CN220791475U
Application number: CN202322497823.7U
Authority: CN
Inventors: 苏力; 张红革; 王五星
Original assignee: Guangdong Ante Medical Co ltd
Current assignee: Guangdong Ante Medical Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-04-16
Anticipated expiration: 2033-09-13

Abstract

The utility model relates to the technical field of medical equipment and discloses a foolproof structure of a pressure pump and the pressure pump, which comprise a mounting bracket and an opening and closing nut, wherein a transversely extending mounting groove is formed in the mounting bracket; the opening and closing nut is accommodated and limited in the mounting groove, the opening and closing nut is provided with a first end and a second end located above the first end, a first fool-proof surface is formed on the outer wall of the first end, a second fool-proof surface is formed on the inner wall of the mounting groove facing the first end, and the first fool-proof surface and the second fool-proof surface correspond to each other and are adapted. According to the technical scheme, the first foolproof surface and the second foolproof surface are respectively arranged on the opening and closing nut and the mounting bracket, and only when the mounting direction of the opening and closing nut is correct, the first foolproof surface on the opening and closing nut and the second foolproof surface on the mounting bracket are mutually corresponding, the opening and closing nut is mounted in the mounting groove, so that the situation that reworking is caused by the fact that the opening and closing nut is possibly mounted is avoided, and the efficiency of the pressure pump assembly production is improved.

Description

Fool-proof structure of pressure pump and pressure pump

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a foolproof structure of a pressure pump and the pressure pump.

Background

The medical pressure pump is one of the medical pressure pumps, and can be adjusted according to the internal pressure and the amount of liquid medicine, so that the intelligence and the safety of transfusion are improved, the quantity of medicine is accurately controlled, and the clinical treatment effect of the medical pressure pump is improved to a great extent.

In the actual production manufacturing process of the pressure pump, because the manufacturing precision is high, parts are more, the structure is more complicated, when the pressure pump is produced and assembled, the upper structure and the lower structure of the opening and closing nut of the pressure pump are consistent, the opening and closing nut is easy to reversely assemble and difficult to find when the screw rod is assembled, and the fact that reworking is needed because the screw rod cannot be assembled can be found when the screw rod is assembled subsequently is influenced, so that the production and assembly efficiency of the pressure pump is influenced.

Disclosure of Invention

The utility model mainly aims to provide a foolproof structure of a pressure pump, which aims to prevent a back-up of an opening and closing nut in the pressure pump.

In order to achieve the above object, the present utility model provides a foolproof structure of a pressure pump, comprising:

the mounting bracket is internally provided with a transversely extending mounting groove;

the split nut is accommodated in the installation groove and limited to the installation groove, the split nut is provided with a first end and a second end located above the first end, a first fool-proof surface is formed on the outer wall of the first end, a second fool-proof surface is formed on the inner wall of the installation groove facing the first end, and the first fool-proof surface and the second fool-proof surface are mutually corresponding and are matched.

Optionally, the first fool-proof surface is located at an edge of the first end of the split nut, and the first fool-proof surface is extended along a depth direction of the mounting groove.

Optionally, the first end of the split nut is formed with at least two first fool-proof surfaces arranged at intervals, the inner wall of the mounting groove facing the first end is formed with at least two second fool-proof surfaces, each second fool-proof surface is correspondingly arranged with one first fool-proof surface, and the shape of each second fool-proof surface is matched with the shape of one first fool-proof surface.

Optionally, the first fool-proof surface is an inclined surface or an arc surface extending along the depth direction of the mounting groove.

Optionally, a third fool-proof surface is formed at the second end of the opening and closing nut, a fourth fool-proof surface is formed on the inner wall of the mounting groove facing the second end, the third fool-proof surface and the fourth fool-proof surface are corresponding to each other and are adapted, and the shapes of the third fool-proof surface and the first fool-proof surface are different.

Optionally, a threaded hole is formed in the split nut, a part of structure in the threaded hole is formed with a thread, and the thread is arranged at one end of the threaded hole, which is opposite to the notch of the mounting groove.

Optionally, the fool-proof structure of the pressure pump further comprises a rebound structure, the rebound structure comprises a propping piece and an elastic piece, the propping piece is arranged at the bottom of the mounting groove and is arranged along the extending direction of the mounting groove near one side of the split nut in an extending mode, and the elastic piece is sleeved on the propping piece and is in butt joint with the split nut.

Optionally, the installing support still includes the spacing groove, the spacing groove is located the outer fringe of installing support, the inner wall of pressure pump shell corresponds and is formed with spacing arch, the spacing groove with spacing protruding corresponding joint is spacing.

Optionally, a guiding structure is formed on the inner wall of the mounting groove, the guiding structure is arranged along the extending direction of the mounting groove, and the guiding structure is in fit connection with the split nut.

The utility model also provides a pressure pump, which comprises a fool-proof structure of the pressure pump; and

the compression sleeve is connected with one end of the pressure pump shell and extends along the direction deviating from the mounting bracket;

the push-pull screw rod is correspondingly matched and connected with the mounting bracket and the opening and closing nut, and partially stretches into the compression sleeve, and the push-pull screw rod can push and pull in the compression sleeve.

The fool-proof structure of the pressure pump comprises:

According to the technical scheme, the first foolproof surface and the second foolproof surface are respectively arranged on the opening and closing nut and the mounting bracket, only when the mounting direction of the opening and closing nut is correct, the first foolproof surface on the opening and closing nut and the second foolproof surface on the mounting bracket are mutually corresponding, and the opening and closing nut is mounted in the mounting groove, so that the situation that reworking is caused by the fact that the opening and closing nut is possibly mounted is avoided through the matching relation of the first foolproof surface and the second foolproof surface, and the efficiency of the assembly production of the pressure pump is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of an embodiment of a foolproof structure of a pressure pump according to the present utility model;

fig. 2 is an exploded schematic view of the pressure pump according to the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1000	Pressure pump	14	Guiding structure
100	Fool-proof structure of pressure pump	2	Open-close nut
				1	Mounting bracket	21	First fool-proof surface
11	Mounting groove	3	Rebound structure
				12	Second fool-proof surface	200	Compression sleeve
13	Limiting groove	300	Push-pull screw

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The medical pressure pump is one of the medical pressure pumps, and can be adjusted according to the internal pressure and the quantity of liquid medicine, so that the intelligence and the safety of transfusion are improved, the quantity of medicine is accurately controlled, and the clinical treatment effect of the medical pressure pump is improved to a great extent.

In order to solve the above-mentioned problems, the present utility model provides a foolproof structure of a pressure pump, which is aimed at avoiding the reverse installation of an opening and closing nut in the pressure pump, and fig. 1 to 2 are schematic structural diagrams of an embodiment of the foolproof structure of the pressure pump.

Referring to fig. 1 to 2, the present utility model proposes a foolproof structure of a pressure pump 1000, which includes a mounting bracket 1 and a split nut 2, wherein a mounting groove 11 extending transversely is formed in the mounting bracket 1; the split nut 2 is accommodated in and limited to the mounting groove 11, the split nut 2 is provided with a first end and a second end located above the first end, a first fool-proof surface 21 is formed on the outer wall of the first end, a second fool-proof surface 12 is formed on the inner wall of the mounting groove 11 facing the first end, and the first fool-proof surface 21 and the second fool-proof surface 12 are mutually corresponding and adapted.

In the technical scheme of the utility model, the mounting bracket 1 is a bracket which is arranged in the shell of the pressure pump 1000 and is used for mounting the push-pull screw 300 and the compression sleeve 200, and the mounting bracket 1 is arranged along the extending direction of the push-pull screw 300 so that the push-pull screw 300 can reciprocate relative to the mounting bracket 1 to push and pull, thereby compressing or exhausting the air in the compression sleeve 200 so as to achieve the effects of sucking the liquid medicine and injecting the liquid medicine; the split nut 2 is disposed in the mounting groove 11, and is used for controlling and adjusting the moving speed of the push-pull screw 300 and limiting the rebound caused by the reaction force of the gas or the liquid medicine in the compression sleeve 200 of the push-pull screw 300.

Through setting up first foolproof face 21 and the foolproof face 12 of second respectively on split nut 2 and installing support 1, only when the installation direction of split nut 2 is correct, just can make the first foolproof face 21 on the split nut 2 and the foolproof face 12 of second on the installing support 1 correspond each other, install split nut 2 to in the mounting groove 11, so, through the cooperation relation of first foolproof face 21 and foolproof face 12 of second, avoid split nut 2 to take place to adorn on the contrary the condition emergence that leads to reworking to improve the efficiency of pressure pump 1000 assembly production.

In an alternative embodiment, to facilitate the arrangement of the first fool-proof surface 21 on the split nut 2, the first fool-proof surface 21 is located at an edge of the first end of the split nut 2, and the first fool-proof surface 21 is arranged to extend along the depth direction of the mounting groove 11. Referring to fig. 1, the split nut 2 is disposed in a mounting groove 11 formed by the mounting bracket 1, the split nut 2 is disposed in the mounting groove 11 and can move back and forth along an extending direction of the mounting groove 11, so as to mount and dismount the split nut 2, in order to ensure an effect of the first foolproof surface 21 and not to affect dismounting of the split nut 2, the first foolproof surface 21 may be disposed on an end surface of a first end of the split nut 2 or edge positions corresponding to left and right sides of a notch of the mounting groove 11, the second foolproof surface 12 is disposed on an inner wall of the mounting groove 11 corresponding to the first foolproof surface 21, and an extending direction of the first foolproof surface 21 corresponds to an extending direction of the mounting groove 11, so as to avoid the first foolproof surface 21 from affecting movement of the split nut 2 in the mounting groove 11.

Further, in order to improve the fool-proof effect of the first fool-proof surface 21, at least two first fool-proof surfaces 21 are formed at the first end of the opening and closing nut 2, at least two second fool-proof surfaces 12 are formed on the inner wall of the mounting groove 11 facing the first end, each second fool-proof surface 12 is correspondingly disposed with one first fool-proof surface 21, and the shape of each second fool-proof surface 12 is matched with the shape of one first fool-proof surface 21. Referring to fig. 1, two or more first foolproof surfaces 21 may be provided, so that only the inconsistent matching structure formed by the end portions of the first end and the second end of the split nut 2 and the inner wall of the mounting groove 11 is ensured, and the split nut 2 is prevented from being reversely mounted in the mounting groove 11, the first foolproof surfaces 21 may be provided on the end surface or the edge of the first end of the split nut 2, and the number of the first foolproof surfaces may be selected by themselves, which is not limited herein.

Furthermore, the shape of the first fool-proof surface 21 may have various options, and in an alternative embodiment, the first fool-proof surface 21 is a slope or an arc surface extending along the depth direction of the mounting groove 11. Referring to fig. 1, the first fool-proof surface 21 may be a straight inclined surface extending along the extending direction of the mounting groove 11, or may be an arc surface, when the first fool-proof surface 21 is disposed on the end surface of the split nut 2, the first fool-proof surface 21 may be a convex surface extending toward the inner wall of the mounting groove 11, or may be a concave surface, and the specific design may be selected according to actual needs, in this embodiment, the first fool-proof surface 21 is a chamfer structure disposed on the left and right sides of the first end of the split nut 2, and the inner wall of the mounting groove 11 is correspondingly formed with an inclined surface corresponding to the split nut 2, so that the fool-proof effects of the first fool-proof surface 21 and the second fool-proof surface 12 are ensured in a structure as simple as possible, and the forming and manufacturing of the mounting bracket 1 and the split nut 2 are also facilitated.

In an alternative embodiment, to improve the effect of the fool-proof surface, a third fool-proof surface is formed at the second end of the split nut 2, a fourth fool-proof surface is formed on the inner wall of the mounting groove 11 facing the second end, the third fool-proof surface and the fourth fool-proof surface are corresponding to each other and adapted, and the shapes of the third fool-proof surface and the first fool-proof surface 21 are different. The fool-proof surface can be arranged at the first end or the second end of the split nut 2, the fool-proof surfaces can be arranged at the two ends, the first fool-proof surface 21 arranged at the first end and the second end of the split nut 2 are distinguished from the third fool-proof surface in different shapes and structures, so that a more striking prompt effect is achieved, the split nut 2 is prevented from being reversely assembled, and optionally, when the fool-proof surfaces arranged at the first end and the second end of the split nut 2 are arranged, the fool-proof surfaces arranged at the left and right of the first end or the second end can also be arranged into different structures, so that the split nut 2 can be prevented from being reversely assembled, and the mounting accuracy of the split nut 2 is further ensured.

In an alternative embodiment, in order to facilitate adjustment of the push-pull stroke of the push-pull screw 300 in the pressure pump 1000, a threaded hole is formed in the split nut 2, and a part of the structure in the threaded hole is formed with a thread, and the thread is disposed at an end of the threaded hole facing away from the notch of the mounting groove 11. Referring to fig. 1 and 2, the hole of the split nut 2 is a long hole, and a threaded hole is formed at one end in the long hole, so that the split nut 2 and the push-pull screw 300 can be engaged with and disengaged from each other by adjusting the position of the split nut 2 in the mounting bracket 1, for example, when the pressure pump 1000 is used to suck the liquid medicine, the split nut 2 and the push-pull screw 300 can be pushed to disengage, at this time, the push-pull screw 300 can be directly pulled to increase the speed of sucking the liquid medicine, and when the liquid medicine needs to be injected, the split nut 2 and the threads on the push-pull screw 300 are pulled to engage, at this time, the push-pull screw 300 can only be rotated to inject the liquid medicine outwards, so that the speed of injecting the liquid medicine is greatly slowed down, and the amount of injecting the liquid medicine can be accurately adjusted.

Further, in order to realize the cooperation and breaking away from of the split nut 2 and the push-pull screw 300, the foolproof structure of the pressure pump 1000 further includes a rebound structure 3, the rebound structure 3 includes an abutting piece and an elastic piece, the abutting piece is disposed at the bottom of the mounting groove 11 and extends along the extending direction of the mounting groove 11 near one side of the split nut 2, and the elastic piece is sleeved on the abutting piece and abuts against the split nut 2. Referring to fig. 1 and 2, the propping member is disposed at the bottom of the mounting groove 11 and corresponds to the split nut 2, an elastic member is sleeved on the propping member, in this embodiment, the elastic member is a spring, and a matching hole is disposed on the split nut 2 and corresponds to the propping member and the elastic member, so that the propping member and the elastic member can be partially accommodated in the matching hole, when the push-pull screw 300 is required to be capable of sliding in the compression sleeve 200, a switch disposed on the casing of the pressure pump 1000 is pressed, the split nut 2 is pressed and separated from the push-pull screw 300, at this time, the rebound structure 3 is pressed and fixed, elastic potential energy is accumulated, and when the push-pull movement of the push-pull screw 300 is required to be limited, the rebound mechanism is released by pressing the switch again, so that the split nut 2 is driven to rebound to enable the split nut 2 and the push-pull screw 300 to be matched, and the push-pull screw 300 to be capable of rotating and moving only in the compression sleeve 200.

Optionally, for carrying out spacing fixing to the installing support 1, the installing support 1 still includes spacing groove 13, spacing groove 13 locates the outer fringe of installing support 1, the inner wall of pressure pump 1000 shell corresponds and is formed with spacing arch, spacing groove 13 with spacing protruding corresponding joint is spacing. Referring to fig. 1 and 2, the left and right ends of the mounting bracket 1 are respectively provided with a limit groove 13, the casing of the pressure pump 1000 is provided with a limit protrusion corresponding to the limit groove 13, and the limit protrusion and the limit groove 13 are engaged in a clamping manner so as to limit the movement of the mounting bracket 1 and prevent the mounting bracket 1 from rotating under the drive of the push-pull screw 300.

In an alternative embodiment, in order to improve the smoothness of sliding of the split nut 2 in the mounting groove 11, a guiding structure 14 is formed on the inner wall of the mounting groove 11, the guiding structure 14 is disposed along the extending direction of the mounting groove 11, and the guiding structure 14 and the split nut 2 are cooperatively connected. Referring to fig. 1, the guiding structure 14 is a protruding strip disposed on the inner wall of the mounting groove 11, and the guiding structure 14 is disposed around the inner wall of the mounting groove 11, so as to reduce the contact area between the split nut 2 and the inner wall of the mounting groove 11, thereby reducing the friction force generated when the split nut 2 moves in the mounting groove 11, and making the split nut 2 slide in the mounting groove 11 more easily.

The utility model also provides a pressure pump 1000, the pressure pump 1000 comprises a fool-proof structure of the pressure pump 1000, a compression sleeve 200 and a push-pull screw 300, wherein the compression sleeve 200 is connected with one end of the shell and extends along the direction deviating from the mounting bracket 1; the push-pull screw 300 is correspondingly matched and connected with the mounting bracket 1 and the split nut 2, and partially extends into the compression sleeve 200, and the push-pull screw 300 can push and pull in the compression sleeve 200. The specific structure of the fool-proof structure of the pressure pump 1000 refers to the above embodiments, and since the pressure pump 1000 adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather, the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A fool-proof structure of a pressure pump, comprising:

2. The fool-proof structure of a pressure pump according to claim 1, wherein the first fool-proof surface is located at an edge of the first end of the split nut, and the first fool-proof surface is disposed to extend in a depth direction of the mounting groove.

3. The structure of claim 1, wherein the first end of the split nut is formed with at least two first fool-proof surfaces disposed at intervals, the inner wall of the mounting groove facing the first end is formed with at least two second fool-proof surfaces, each second fool-proof surface is disposed corresponding to one first fool-proof surface, and each second fool-proof surface is adapted to one first fool-proof surface in shape.

4. The fool-proof structure of a pressure pump according to claim 1, wherein the first fool-proof surface is a slope or an arc surface extending in a depth direction of the installation groove.

5. The fool-proof structure of a pressure pump according to any one of claims 1 to 4, wherein a third fool-proof surface is formed at a second end of the split nut, a fourth fool-proof surface is formed on an inner wall of the mounting groove facing the second end, the third fool-proof surface and the fourth fool-proof surface are corresponding to each other and adapted, and shapes of the third fool-proof surface and the first fool-proof surface are different.

6. The structure for preventing a fool assembly of a pressure pump according to any one of claims 1 to 4, wherein a screw hole is formed in the split nut, and a part of the structure in the screw hole is formed with a screw thread provided at an end of the screw hole facing away from the notch of the installation groove.

7. The foolproof structure of a pressure pump according to any one of claims 1 to 4, further comprising a rebound structure including an abutting member and an elastic member, wherein the abutting member is disposed at the bottom of the mounting groove and extends along the extending direction of the mounting groove near one side of the split nut, and the elastic member is sleeved on the abutting member and abuts against the split nut.

8. The fool-proof structure of a pressure pump according to any one of claims 1 to 4, wherein the mounting bracket further comprises a limit groove, the limit groove is arranged at the outer edge of the mounting bracket, a limit protrusion is correspondingly formed on the inner wall of the pressure pump shell, and the limit groove and the limit protrusion are correspondingly clamped and limited.

9. The fool-proof structure of a pressure pump according to any one of claims 1 to 4, wherein a guide structure is formed on an inner wall of the installation groove, the guide structure being disposed along an extending direction of the installation groove, the guide structure being coupled with the split nut in a mating manner.

10. A pressure pump comprising the foolproof structure of the pressure pump according to any one of claims 1 to 9; and