CN212643453U - Transmission device and magnetic control capsule endoscope system - Google Patents

Abstract

The application relates to the technical field of endoscope capsule control systems, in particular to a transmission device and a magnetic control capsule endoscope system. The transmission device is used for a magnetic control capsule endoscope system, and comprises: a drive motor having a drive shaft; the first belt pulley can rotate under the driving of the driving shaft; the supporting part is sleeved on the outer side of the driving shaft and connected with the first belt pulley; wherein, along the radial of drive shaft, the supporting part is located between drive shaft and the first belt pulley, and has the clearance between supporting part and the drive shaft to cut off the pressure that first belt pulley transmitted to the drive shaft.

Description

Transmission device and magnetic control capsule endoscope system

Technical Field

The application relates to the technical field of capsule endoscope control systems, in particular to a transmission device and a magnetic control capsule endoscope system.

Background

A magnetically controlled capsule endoscope system is a capsule endoscope with an operation end for actively controlling the examination field. The common means is to place a magnet outside the human body, and the magnet arranged in the magnetic control capsule endoscope system is influenced by the external changing magnetic field to drive the capsule endoscope in the human body to rotate, so that the change of the capsule endoscope inspection visual field is realized. In the prior art, a transmission device in a magnetic control capsule endoscope system is not provided with a structure or a device for absorbing the tension force of a belt, and the tension force of the belt is directly applied to a motor shaft through a belt pulley, so that the motor directly bears the radial force of a first belt pulley, and the damage rate of the motor is increased.

SUMMERY OF THE UTILITY MODEL

The application provides a transmission device and a magnetic control capsule endoscope system, reduces the risk that a motor shaft bears radial force, and prolongs the service life of the motor.

The embodiment of the application provides a transmission device, is used for magnetic control capsule endoscope system, transmission device includes:

a drive motor having a drive shaft;

a first pulley capable of being driven to rotate by the drive shaft;

the supporting part is sleeved on the outer side of the driving shaft and connected with the first belt pulley;

wherein, along the radial direction of the driving shaft, the supporting part is located between the driving shaft and the first belt pulley, and a gap is provided between the supporting part and the driving shaft.

In one possible design, the support is of an annular configuration.

In one possible design, the support portion includes a plurality of support blocks, and the plurality of support blocks are arranged at intervals along the outer circumference of the drive shaft;

each of the support blocks is connected to the first pulley in a radial direction of the drive shaft with the gap therebetween.

In one possible design, the clearance of each position of the support portion from the drive shaft in the radial direction of the drive shaft is greater than or equal to 0.5 mm.

In one possible design, the transmission further comprises a bearing;

the bearing is installed between the first pulley and the support portion in a radial direction of the driving shaft;

the bearing is provided with an inner ring and an outer ring, the first belt pulley is sleeved on the outer ring and can drive the outer ring to rotate relative to the inner ring, and the supporting part is fixedly connected with the inner ring so that the first belt pulley can rotate relative to the supporting part under the driving of the driving shaft.

In one possible design, an installation groove is formed at one end of the first belt pulley, which is close to the driving motor, along the axial direction of the driving shaft;

the bearing and the support portion are mounted in the mounting groove, and at least a portion of the drive shaft is capable of extending into the mounting groove.

In a possible design, the outer wall of the support part is provided with a groove, the groove is arranged along the circumferential direction of the drive shaft, and the bearing is clamped in the groove.

In one possible design, the groove penetrates the support portion along a side away from the drive motor in an axial direction of the drive shaft, and the groove has a side wall along a side close to the drive motor;

the mounting groove is provided with a bottom wall along one end far away from the driving motor, and the bottom wall is opposite to the side wall;

and one end of the bearing is abutted to the bottom wall and the other end of the bearing is abutted to the side wall along the axial direction of the driving shaft.

In one possible design, the mounting groove has a bottom wall along an end remote from the drive motor;

the driving shaft is fixedly connected with the bottom wall of the mounting groove.

In one possible design, the drive shaft comprises a motor output shaft and a connecting shaft,

the connecting shaft is sleeved on the output shaft of the motor and fixedly connected with the output shaft of the motor;

the mounting groove is provided with a bottom wall along one end far away from the driving motor;

along the axial of drive shaft, the connecting axle extends towards the direction of the diapire of mounting groove to with first belt pulley fixed connection.

The embodiment of the present application further provides a magnetic control capsule endoscope system, which is used for controlling a capsule endoscope, and the magnetic control capsule endoscope system comprises:

a support frame;

the transmission device is the transmission device;

wherein the driving motor is arranged on the supporting frame,

along the axial of drive shaft, the one end that the supporting part is kept away from the first belt pulley extends outward, and with the support frame is connected.

The technical scheme provided by the application can achieve the following technical effects:

install the supporting part between first belt pulley and drive shaft, have the clearance between supporting part and the drive shaft, make first belt pulley use the supporting part with the pressure that bears on, do not have direct relation of connection between supporting part and the drive shaft, the drive shaft can not be used to the pressure that the supporting part bore, the tensile force of having avoided the hold-in range is exerted pressure on the drive shaft, and then improves driving motor's drive accuracy, extension driving motor's life.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic diagram of a transmission device and a magnetically controlled capsule endoscope system provided in the present application, in one embodiment;

FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is an enlarged view of section D of FIG. 2;

FIG. 4 is a schematic view of the bearing of FIG. 3 with the bearing removed;

fig. 5 is an enlarged view of a portion E of fig. 4.

Reference numerals:

1-a transmission device;

11-a drive motor;

111-a drive shaft;

111 a-motor output shaft;

111 b-a connecting shaft;

12-a first pulley;

121-mounting grooves;

121 a-bottom wall;

13-a support;

131-a groove;

131 a-a side wall;

14-gap;

15-a bearing;

151-inner ring;

152-an outer ring;

16-a support frame;

17-a synchronous belt;

18-second pulley.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

A magnetically controlled capsule endoscope system is a capsule endoscope with an operation end for actively controlling the examination field. The common means is to place a magnet outside the human body, and the magnet arranged in the magnetic control capsule endoscope system is influenced by the external changing magnetic field to drive the capsule endoscope in the human body to rotate, so that the change of the capsule endoscope inspection visual field is realized. The transmission device in the magnetic control capsule endoscope system is used for transmitting power to the working mechanism. In the prior art transmission, the tension of the belt is directly applied to the motor shaft, which results in the service life of the motor being affected.

Specifically, the transmission device comprises a motor, a driving belt pulley, a synchronous belt and a driven belt pulley, wherein the driving belt pulley is sleeved on a driving shaft of the motor, and the driving belt pulley is connected with the driven belt pulley through the synchronous belt so as to drive the driven belt pulley to rotate by the driving belt pulley; the synchronous belt is sleeved on the driving belt pulley and the driven belt pulley, the tension force of the synchronous belt is applied to the driving belt pulley and the driven belt pulley, and the driving belt pulley transmits force to the rotating shaft of the motor, so that the tension force of the synchronous belt is applied to the rotating shaft of the motor, the motor bears the radial force of the synchronous belt, the requirement on the output force of the motor is high, and the damage rate of the motor is increased.

In order to solve the above technical problem, an embodiment of the present application provides a magnetically controlled capsule endoscope system for controlling a capsule endoscope, the magnetically controlled capsule endoscope system includes a support frame 16 and a transmission device 1, wherein the transmission device 1 is mounted on the support frame 16. As shown in fig. 1 to 5, the transmission 1 includes a drive motor 11, a first pulley 12, and a support portion 13; the driving motor 11 is used as a power source to generate driving torque, the driving motor 11 is mounted on the supporting frame 16, the driving motor 11 has a driving shaft 111, the driving shaft 111 controls the driving shaft 111 to rotate, the driving shaft 111 is connected with the first belt pulley 12 so that the first belt pulley 12 can rotate under the driving of the driving shaft 111, and the supporting portion 13 is sleeved outside the driving shaft 111 and connected with the first belt pulley 12; wherein, along radial direction B of the driving shaft 111, the supporting portion 13 is located between the driving shaft 111 and the first pulley 12, and a gap 14 is provided between the supporting portion 13 and the driving shaft 111 to block the pressure transmitted from the first pulley 12 to the driving shaft 111 and prevent the driving shaft 111 from bearing the pressure.

Further, in the axial direction C of the drive shaft 111, the support portion 13 extends outward away from one end of the first pulley 12 and is connected to the support bracket 16.

In this embodiment, the first belt pulley 12 is connected with the second belt pulley 18 through the synchronous belt 17, in order to prevent the tension of the synchronous belt 17 from pressing to the driving shaft 111 through the first belt pulley 12, the supporting portion 13 is installed between the first belt pulley 12 and the driving shaft 111, a gap 14 is provided between the supporting portion 13 and the driving shaft 111, the pressure that the first belt pulley 12 will bear is applied to the supporting portion 13, there is no direct connection structure between the supporting portion 13 and the driving shaft 111, the pressure that the supporting portion 13 bears cannot be applied to the driving shaft 111, the tension of the synchronous belt 17 is prevented from pressing to the driving shaft 111, and then the driving precision of the driving motor 11 is improved, and the service life of the driving motor 11 is.

As shown in fig. 2, in a possible design, the supporting portion 13 may have a ring structure, which facilitates the processing and facilitates the first belt pulley 12 to be sleeved outside the supporting portion 13. When the support portion 13 is of an integral structure, it is also possible to facilitate the attachment of the support portion 13 to the first pulley 12.

In another possible design, the supporting portion 13 may also be a split structure, and specifically may include a plurality of supporting blocks, and the supporting blocks are arranged at intervals along the outer circumference of the driving shaft 111; each support block is connected to the first pulley 12 in the radial direction B of the drive shaft 111 with a gap 14 therebetween. In this embodiment, the supporting portion 13 may be formed by splicing a plurality of supporting blocks, and the supporting blocks are connected to form an annular structure, so as to be rotatably connected to the first belt pulley 12, and along the radial direction B of the driving shaft 111, the upper portion of the supporting portion 13 mainly bears the pressure applied by the first belt pulley 12, so that the supporting blocks located on the upper portion are more easily damaged by force, and the supporting portion 13 is designed to be a plurality of supporting blocks, so that the damaged supporting blocks can be replaced, and the cost is saved.

In one possible design, the clearance 14 of the support 13 from the drive shaft 111 at each position in the radial direction B of the drive shaft 111 is greater than or equal to 0.5 mm. For example, the gap 14 between the support portion 13 and the drive shaft 111 may be 0.75mm, and the support portion 13 and the drive shaft 111 may have the gap 14 and may not be connected. The supporting portion 13 plays a role of absorbing the pressure of the timing belt 17 in the overall structure and preventing the pressure from being transmitted to the driving shaft 111 of the driving motor 11, thereby realizing the protection of the motor, and in the actual production and use, the sizes of the gaps 14 can be selected according to the actual use requirements (such as installation space limitation).

As shown in fig. 2 and 3, in one possible design, the transmission 1 further comprises a bearing 15; the bearing 15 is installed between the first pulley 12 and the support portion 13 in the radial direction B of the drive shaft 111; the bearing 15 has an inner ring 151 and an outer ring 152, the first belt pulley 12 is sleeved on the outer ring 152, the first belt pulley 12 can drive the outer ring 152 to rotate relative to the inner ring 151, and the support portion 13 is fixedly connected to the inner ring 151, so that the first belt pulley 12 can rotate relative to the support portion 13 under the driving of the driving shaft 111. In this embodiment, the bearing 15 is sleeved on the supporting portion 13, the first belt pulley 12 is sleeved on the bearing 15, so as to realize the rotation connection between the first belt pulley 12 and the supporting portion 13, and compared with the case that the first belt pulley 12 is directly sleeved on the supporting portion 13, the friction in the movement process is reduced, and the bearing 15 can realize some supporting effects, thereby further protecting the driving shaft 111.

As shown in fig. 2 and 3, in one possible design, an end of the first pulley 12 near the driving motor 11 is provided with a mounting groove 121 along the axial direction C of the driving shaft 111; bearing 15 and supporting part 13 are installed in mounting groove 121, realize the connection of bearing 15, supporting part 13 and first belt pulley 12 through mounting groove 121, at least part of drive shaft 111 can stretch into mounting groove 121 to be connected with first belt pulley 12, first belt pulley 12 can pass through the screw and wear into mounting groove 121 along the one side relative with the notch of mounting groove 121 in, with drive shaft 111 fixed connection, so that first belt pulley 12 can rotate under the drive of drive shaft 111.

As shown in fig. 2 to 5, in one possible design, the outer wall of the supporting portion 13 is provided with a groove 131, the groove 131 is arranged along the circumferential direction of the driving shaft 111 and extends along the axial direction C of the driving shaft 111, and the bearing 15 is clamped in the groove 131. The groove 131 serves to position the bearing 15 and prevent the bearing 15 from sliding along the outer wall of the support portion 13 when rotating.

As shown in fig. 2 to 5, in one possible design, in the axial direction C of the drive shaft 111, the groove 131 penetrates the support portion 13 along the side away from the drive motor 11, and the groove 131 has a side wall 131a along the side close to the drive motor 11; the mounting groove 121 has a bottom wall 121a along one end away from the driving motor 11, the bottom wall 121a being disposed opposite to the side wall 131 a; the bearing 15 is arranged in a space enclosed by the groove 131 and the mounting groove 121, one end of the bearing 15 is abutted against the bottom wall 121a and the other end is abutted against the side wall 131a along the axial direction C of the driving shaft 111, so that the bearing 15 is clamped in the space enclosed by the groove 131 and the mounting groove 121, the bearing 15 is limited, and the working reliability of the transmission device 1 is further ensured.

As shown in fig. 2 and 3, in a possible design, the driving shaft 111 is fixedly connected to the bottom wall 121a of the mounting groove 121, so that the driving shaft is fixedly connected to the first pulley 12, thereby realizing that the first pulley 12 is driven by the driving shaft 111 to rotate.

Specifically, the driving shaft 111 may be fixedly connected with the bottom wall 121a of the mounting groove 121 by a bolt, and of course, other connecting members may be used to achieve the fixed connection.

As shown in fig. 4 and 5, in one possible design, the driving shaft 111 includes a motor output shaft 111a and a connecting shaft 111b, and the connecting shaft 111b is sleeved on the motor output shaft 111a and is fixedly connected with the motor output shaft 111 a; the connecting shaft 111b extends in the axial direction C of the driving shaft 111 toward the bottom wall 121a of the mounting groove 121 and is fixedly connected to the first pulley 12. In this embodiment, the shaft 111a of the motor output shaft and the first belt pulley 12 are connected by the connecting shaft 111b, and rotate synchronously with the shaft 111a of the motor and the first belt pulley 12 in the process of power transmission, so as to prevent the shaft 111a of the motor from bearing an excessive load, and protect the driving motor 11.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. A transmission device for a magnetically controlled capsule endoscopic system, characterized in that the transmission device (1) comprises:

a drive motor (11), the drive motor (11) having a drive shaft (111);

a first pulley (12), the first pulley (12) being rotatable by the drive shaft (111);

the supporting part (13) is sleeved outside the driving shaft (111), and the supporting part (13) is connected with the first belt pulley (12);

wherein, in a radial direction (B) of the drive shaft (111), the support portion (13) is located between the drive shaft (111) and the first pulley (12), and a gap (14) is provided between the support portion (13) and the drive shaft (111).

2. Transmission according to claim 1, characterized in that the support (13) is of annular construction.

3. The transmission device according to claim 1, wherein the support portion (13) comprises a plurality of support blocks, and the plurality of support blocks are arranged at intervals along the outer circumference of the drive shaft (111);

in the radial direction (B) of the drive shaft (111), each support block is connected to the first pulley (12) with the gap (14) therebetween.

4. Transmission according to claim 1, characterized in that the clearance (14) of the support (13) from the drive shaft (111) at each position in the radial direction (B) of the drive shaft (111) is greater than or equal to 0.5 mm.

5. Transmission according to any of claims 1 to 4, characterized in that the transmission (1) further comprises a bearing (15);

-said bearing (15) is mounted between said first pulley (12) and said support (13) in a radial direction (B) of said drive shaft (111);

the bearing (15) is provided with an inner ring (151) and an outer ring (152), the first belt pulley (12) is sleeved on the outer ring (152), the first belt pulley (12) can drive the outer ring (152) to rotate relative to the inner ring (151), and the supporting portion (13) is fixedly connected with the inner ring (151) so that the first belt pulley (12) can rotate relative to the supporting portion (13) under the driving of the driving shaft (111).

6. Transmission according to claim 5, characterized in that the first pulley (12) is provided with a mounting groove (121) at its end close to the drive motor (11) in the axial direction (C) of the drive shaft (111);

the bearing (15) and the support portion (13) are mounted in the mounting groove (121), and at least a portion of the drive shaft (111) is capable of extending into the mounting groove (121).

7. Transmission according to claim 6, characterized in that the outer wall of the support (13) is provided with a groove (131), the groove (131) being arranged in the circumferential direction of the drive shaft (111), the bearing (15) being snap-fitted in the groove (131).

8. Transmission according to claim 7, characterized in that said recess (131) penetrates through said support (13) along the side remote from said drive motor (11) in the axial direction (C) of said drive shaft (111), said recess (131) having a side wall (131a) along the side close to said drive motor (11);

the mounting groove (121) is provided with a bottom wall (121a) along one end far away from the driving motor (11), and the bottom wall (121a) is opposite to the side wall (131 a);

one end of the bearing (15) abuts against the bottom wall (121a) and the other end abuts against the side wall (131a) in the axial direction (C) of the drive shaft (111).

9. Transmission according to claim 6, characterized in that said mounting groove (121) has a bottom wall (121a) along an end remote from said drive motor (11);

the drive shaft (111) is fixedly connected with the bottom wall (121 a).

10. Transmission according to claim 6, characterized in that the drive shaft (111) comprises a motor output shaft (111a) and a connecting shaft (111b),

the connecting shaft (111b) is sleeved on the motor output shaft (111a) and fixedly connected with the motor output shaft;

the mounting groove (121) is provided with a bottom wall (121a) along one end far away from the driving motor (11);

the connecting shaft (111b) extends in the axial direction (C) of the driving shaft (111) in the direction of the bottom wall (121a) and is fixedly connected to the first pulley (12).

11. A magnetically controlled capsule endoscopic system for controlling a capsule endoscope, the magnetically controlled capsule endoscopic system comprising:

a support frame (16);

a transmission (1), the transmission (1) being a transmission (1) according to any one of claims 1 to 10;

wherein the driving motor (11) is arranged on the supporting frame (16),

along the axial direction (C) of the driving shaft (111), one end of the supporting part (13) far away from the first belt pulley (12) extends outwards and is connected with the supporting frame (16).

Images