CN217463146U

CN217463146U - Motor connection structure, molecular sieve bed transmission mechanism and oxygenerator

Info

Publication number: CN217463146U
Application number: CN202221523431.2U
Authority: CN
Inventors: 胡万波
Original assignee: Qianrui Medical Science And Technology Chengdu Co ltd
Current assignee: Qianrui Medical Science And Technology Chengdu Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-09-20
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a motor connection structure, molecular sieve bed drive mechanism and oxygenerator, the output shaft of motor serves and has seted up the connecting hole, still includes: a shock pad; a worm; a card sleeve; and (4) bolts. The utility model discloses an output shaft interference of shock pad and motor is connected, the shock pad guarantee the worm one end with the output shaft's of motor stability can effectually prevent that the worm from taking place the rotation of circumferencial direction, also can reduce the influence of the axial runout of motor output shaft and moment of torsion transmission. The stability of connecting the other end of the worm with the output shaft of the motor through the bolt and the clamping sleeve enables the clamping sleeve to align the centers of the worm and the output shaft of the motor, so that the circumferential jumping of the worm is effectively prevented; the worm resists the axial tension applied to the worm through the fastening force of the locked bolt. I.e. to ensure the stability of the connection of the worm on the output shaft of the motor. The defect that the connection between the worm and the output shaft of the motor is unstable in the prior art is also overcome.

Description

Motor connection structure, molecular sieve bed transmission mechanism and oxygenerator

Technical Field

The utility model relates to an oxygenerator technical field especially relates to a motor connection structure, molecular sieve bed drive mechanism and oxygenerator.

Background

At present, when an output shaft of a motor of an oxygen generator is driven by a worm, the worm can actually receive pulling force from a worm wheel along the axial direction of a motor shaft. This pulling force tends to pull the worm away from the motor shaft. In order to resist the influence of the pulling force and prevent the worm from disengaging, an ABS motor shaft sleeve is designed. When the clamping sleeve is assembled, a slight interference is pressed into a gap between the end of the worm and the motor shaft, and the interference fit generates enough pressure to resist the tensile force. The ABS motor shaft cutting sleeve is a mould injection molding part, and the dimensional accuracy is far lower than that of a step motor shaft and an aluminum alloy worm which are subjected to finish machining, so that the ABS motor shaft cutting sleeve cannot stably generate enough pressure to prevent the worm from being separated from a motor shaft. At the moment, the worm cannot be normally meshed with a worm gear structure on the gear set, the torque transmission fails, the rotary valve on the molecular sieve bed cannot rotate, no oxygen is output, and the oxygenerator is shut down due to faults.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the unstable shortcoming of worm and motor output shaft that exists among the prior art, and the motor connection structure who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a motor connection structure, the output shaft of motor is served and has been seted up the connecting hole, still includes:

the shock pad is sleeved on the output shaft of the motor in an interference manner;

the worm is sleeved on the output shaft of the motor, and one end of the worm is connected with the damping pad;

the clamping sleeve is sleeved on one end of the output shaft of the motor and abutted against the other end of the worm, and the clamping sleeve is used for aligning the axes of the worm and the output shaft so as to prevent the worm from jumping circumferentially;

the bolt is connected in the connecting hole in a threaded mode;

the nut diameter length of the bolt is larger than the aperture diameter length of the worm, the other end of the worm is connected with an output shaft of the motor in a limiting mode through the nut of the bolt, and the worm resists axial tension applied to the worm through fastening force of the bolt after being locked.

Optionally, the method further includes:

the clamping protrusions are arc-shaped plate-shaped, and the plurality of clamping protrusions are distributed on the shock pad in an annular array manner;

the clamping grooves are formed in the position, close to one end of the shock pad, of the worm, the clamping grooves are formed in the worm in an annular array distribution mode, and the clamping convex joints are connected into the clamping grooves.

Optionally, the shock pad is made of silica gel.

Optionally, the clamping protrusion is bonded to the inner wall of the clamping groove.

Optionally, the thread groove of the bolt is bonded to the inner wall of the connecting hole.

The utility model also provides a molecular sieve bed transmission mechanism, which adopts the motor connecting structure; the transmission structure further comprises:

the molecular sieve bed is provided with a first rotating shaft along the central axis of the molecular sieve bed, two ends of the first rotating shaft are respectively connected with an air inlet end rotating valve and an air outlet end rotating valve, the air inlet end rotating valve and the air outlet end rotating valve are coaxially and rotatably connected, the motor is arranged on the molecular sieve bed, and the motor is close to the air inlet end rotating valve;

the worm wheel is rotationally connected to the molecular sieve bed through a second rotating shaft and meshed with the worm to rotate;

the driving wheel is arranged on the worm wheel and rotates coaxially with the worm wheel;

the driven wheel is sleeved on the first rotating shaft and is coaxially connected with the air inlet end rotating valve, and the driven wheel is meshed with the driving wheel.

Optionally, a silica gel pad is arranged at a joint of the motor and the molecular sieve bed, one end of the silica gel pad is abutted to the motor, and the other end of the silica gel pad is abutted to the molecular sieve bed.

The utility model also provides an oxygenerator, adopted in the aforesaid a molecular sieve bed drive mechanism.

The utility model has the advantages that:

1. the utility model discloses output shaft interference through shock pad and motor is connected in this embodiment one, the shock pad guarantee the worm one end with the output shaft's of motor stability can effectually prevent that the worm from taking place the rotation of circumferencial direction, also can reduce the influence of the axial runout of motor output shaft and moment of torsion transmission. The stability of connecting the other end of the worm with the output shaft of the motor through the bolt and the clamping sleeve enables the clamping sleeve to align the centers of the worm and the output shaft of the motor, so that the circumferential jumping of the worm is effectively prevented; the worm resists the axial tension applied to the worm through the fastening force of the locked bolt. I.e. to ensure the stability of the connection of the worm on the output shaft of the motor. The defect that the connection between the worm and the output shaft of the motor is unstable in the prior art is also overcome. Meanwhile, the motor connecting structure is compact in overall design and convenient and fast to install, and meets the actual working requirements.

2. The utility model discloses in embodiment two, the output shaft through the motor drives the worm and rotates, and the worm meshing drives the worm wheel this moment and rotates, and the worm wheel drives the action wheel through the second pivot, and the action wheel meshing drives from the driving wheel, drives the inlet end rotary valve from the driving wheel and rotates, and then drives the exhaust end rotary valve through first pivot and rotates, lets the molecular sieve bed sieve raw materials air through vacuum connector and inlet connector screening. Meanwhile, when the faulty oxygen generator needs to be maintained due to torque transmission, the old oxygen generator can be directly replaced by a new motor and worm assembly. Economical and practical, is convenient to install and replace, and effectively enhances the practicability.

Drawings

Fig. 1 is a schematic view of a motor connection structure according to a first embodiment of the present invention;

fig. 2 is an exploded schematic view of a motor connecting structure according to a first embodiment of the present invention;

fig. 3 is a schematic view of an overall structure of a molecular sieve bed transmission mechanism provided in the second embodiment of the present invention;

fig. 4 is a schematic view of an overall structure (in a top view direction) of a molecular sieve bed transmission mechanism provided in the second embodiment of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 3.

The symbols in the figures are as follows:

1. a motor; 11. an electric wire; 12. an output shaft; 121. connecting holes;

2. a shock pad; 21. clamping and protruding;

3. a card sleeve;

4. a worm; 41. a bolt; 42. a worm gear;

5. a molecular sieve bed; 51. a driven wheel; 511. an air inlet end rotary valve; 52. a driving wheel; 53. an air inlet connector; 531. a vacuum connection port; 54. a silica gel pad; 55. the exhaust end rotates the valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example one

Referring to fig. 1 to 2, a motor 1 connecting structure, the motor 1 connecting structure comprising: shock pad 2, worm 4, cutting ferrule 3 and bolt 41. A connecting hole 121 is formed at one end of the output shaft 12 of the motor 1, and the connecting hole 121 is used for facilitating the connection of the bolt 41. The shock pad 2 is sleeved on the output shaft 12 of the motor 1 in an interference manner. The worm 4 is sleeved on the output shaft 12 of the motor 1, and one end of the worm 4 is connected with the damping pad 2. The clamping sleeve 3 is sleeved on one end of the output shaft 12 of the motor 1, the clamping sleeve 3 is abutted against the other end of the worm 4, and the clamping sleeve 3 is used for aligning the axes of the worm 4 and the output shaft 12 of the motor 1 to avoid circumferential jumping of the worm 4. The bolt 41 is in threaded connection with the inside of the connecting hole 121, the nut diameter length of the bolt 41 is larger than the diameter length of the worm 4, one end of the worm 4, which is far away from the shock pad 2, is in limited connection with the output shaft 12 of the motor 1 through the nut of the bolt 41, and the worm 4 resists the axial tension applied to the worm 4 through the fastening force of the bolt 41 after being locked. That is, in the present embodiment, the damper pad 2, the worm 4, the connecting hole 121, the ferrule 3, and the bolt 41 are coaxially disposed. Through shock pad 2 and the output shaft 12 interference connection of motor 1 in this embodiment, shock pad 2 guarantees the one end of worm 4 with the stability that the output shaft 12 of motor 1 is connected can effectually prevent that worm 4 from taking place the rotation of circumferencial direction, also can reduce the influence of the axial runout of motor 1 output shaft 12 and moment of torsion transmission. The stability that the other end of the worm 4 is connected with the output shaft 12 of the motor 1 through the bolt 41 and the clamping sleeve 3 enables the clamping sleeve 3 to align the centers of the worm 4 and the output shaft 12 of the motor 1, so that the circumferential jumping of the worm 4 is effectively prevented; the worm 4 is made to resist the axial tension applied to the worm 4 by the tightening force of the locking rear bolt 41. I.e. to ensure the stability of the connection of the worm 4 on the output shaft 12 of the motor 1. The defect that the connection between the worm 4 and the output shaft 12 of the motor 1 is unstable in the prior art is solved. Meanwhile, the connection structure of the motor 1 is compact in overall design and convenient and fast to install, and meets the actual working requirements.

In the present embodiment, in order to ensure the connection strength of the cushion 2 and the worm 4. Annular array is provided with a plurality of blocks of protruding 21 on the shock pad 2, the protruding 21 of card is arc platelike. A plurality of clamping grooves (not shown) are formed in one end of the worm 4, the clamping grooves are distributed in an annular array, and the clamping protrusions 21 are clamped in the clamping grooves. Namely, the shock pad 2 is clamped in the clamping groove through a plurality of clamping protrusions 21, and the shock pad 2 and the worm 4 are fixed together. In this embodiment, in order to ensure the connection stability of the locking protrusion 21 in the locking groove, the locking protrusion 21 and the locking groove are bonded together by an adhesive. In this embodiment, it is preferable that the shock absorbing pad 2 is a silica gel shock absorbing pad 2. The adhesive is a silica gel adhesive. In this embodiment, the damping pad 2 is fixedly connected with the worm 4 through an adhesive, and then the damping pad 2 is sleeved on the output shaft 12 of the motor 1 in an interference manner. When the motor 1 rotates, the shock pad 2 can effectively prevent the worm 4 from rotating in the circumferential direction. The axial runout of the output shaft 12 of the motor 1 and the influence of torque transmission can be reduced.

In this embodiment, in order to meet the actual construction requirement, the processing model of the connecting hole 121 on the output shaft 12 of the motor 1 is an M3 internal threaded hole, the bolt 41 is an M3 type screw, and the bolt 41 is in threaded fit connection with the connecting hole 121. In the present embodiment, in order to secure the stability of the connection between the bolt 41 and the connection hole 121, when the bolt 41 is installed in the connection hole 121, a small amount of screw fastening glue is applied to the screw groove of the bolt 41, and then the bolt 41 is fastened to the connection hole 121 of the shaft top portion of the output shaft 12 of the motor 1 by using the electric driver set to 5lb-in torque. The axial tension applied to the worm 4 is resisted by the tightening force of the rotated bolt 41. In this embodiment, the connecting hole 121 may be an internal threaded connecting hole 121 with other types and sizes, and the bolt 41 may also be a screw with other types and sizes, as long as the connecting hole 121 is in threaded connection with the bolt 41 in a matching manner.

In the present embodiment, the motor 1 may be a stepping motor 1 or a servo motor 1. The motor 1 is connected to a power supply (not shown) via a power line 11.

Example two

Referring to fig. 3, 4 and 5, a molecular sieve bed 5 transmission mechanism adopts a motor 1 connection structure in the first embodiment. The transmission structure further includes: molecular sieve bed 5, worm gear 42, drive wheel 52 and driven wheel 51. Molecular sieve bed 5 is provided with a first pivot (not seen in the figure) along self the central axis, the both ends of first pivot are connected with inlet end rotary valve 511 and exhaust end rotary valve 55 respectively, inlet end rotary valve 511 with exhaust end rotary valve 55 coaxial rotation links to each other, motor 1 sets up on the molecular sieve bed 5, just motor 1 is close to inlet end rotary valve 511. The worm wheel 42 is rotatably connected to the molecular sieve bed 5 through a second rotating shaft (not shown), and the worm wheel 42 is meshed with the worm 4 for rotation. The driving wheel 52 is disposed on the worm wheel 42, and the driving wheel 52 rotates coaxially with the worm wheel 42. The driven wheel 51 is sleeved on the first rotating shaft, the driven wheel 51 is coaxially connected with the air inlet end rotary valve 511, and the driven wheel 51 is meshed with the driving wheel 52. In this embodiment, the output shaft 12 through the motor 1 drives the worm 4 to rotate, at this time, the worm 4 meshes and drives the worm wheel 42 to rotate, the worm wheel 42 drives the driving wheel 52 through the second rotating shaft, the driving wheel 52 meshes and drives the driven wheel 51, the driven wheel 51 drives the air inlet end rotary valve 511 to rotate, and then the exhaust end rotary valve 55 is driven to rotate through the first rotating shaft, let the molecular sieve bed 5 sieve the raw material air through the vacuum connector 531 and the air inlet connector 53, the compressed air after the processing enters the molecular sieve bed 5 through the air inlet connector 53, nitrogen, carbon dioxide and the like in the air are adsorbed, the gas flowing out of the exhaust end rotary valve 55 is the oxygen with high purity. In the embodiment, by adopting the connection structure of the motor 1 in the first embodiment, when the oxygen generator which is failed due to torque transmission needs to be repaired, the old oxygen generator can be directly replaced by a new assembly of the motor 1 and the worm 4. Is economical and practical, is convenient to install and replace, and effectively enhances the practicability.

In this embodiment, in order to ensure the stability of the connection between the motor 1 and the molecular sieve bed 5. The connection part of the motor 1 and the molecular sieve bed 5 is provided with a silica gel pad 54, one end of the silica gel pad 54 is abutted against the motor 1, and the other end of the silica gel pad 54 is abutted against the molecular sieve bed 5. The silica gel pad 54 is used for filling the connection gap between the motor 1 and the molecular sieve bed 5, so that no gap is ensured, vibration transmission is prevented when the worm 4 operates, and stable operation of the motor 1 is ensured.

EXAMPLE III

An oxygen generator adopts the molecular sieve bed 5 transmission structure in the second embodiment. The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a motor connection structure, its characterized in that, the connecting hole has been seted up to one of the output shaft of motor, still includes:

the bolt is in threaded connection with the connecting hole;

2. The motor connecting structure according to claim 1, further comprising:

3. The motor connecting structure according to claim 2, wherein the shock pad is made of a silicone material.

4. The motor connecting structure according to claim 3, wherein the locking projection is bonded to an inner wall of the locking groove.

5. The motor connecting structure as set forth in claim 4, wherein the thread groove of the bolt is adhered to the inner wall of the connecting hole.

6. A molecular sieve bed transmission mechanism, characterized in that a motor connecting structure of any one of claims 1-5 is adopted; the transmission mechanism further comprises:

7. The molecular sieve bed transmission mechanism according to claim 6, wherein a silica gel pad is disposed at a joint of the motor and the molecular sieve bed, one end of the silica gel pad is abutted against the motor, and the other end of the silica gel pad is abutted against the molecular sieve bed.

8. An oxygen generator, characterized in that a molecular sieve bed transmission mechanism of any one of claims 6 to 7 is adopted.