CN216016575U

CN216016575U - Coil fixing device and fatigue detector

Info

Publication number: CN216016575U
Application number: CN202121776236.6U
Authority: CN
Inventors: 谢守华; 欧建忠
Original assignee: Guoguang Electric Co Ltd
Current assignee: Guoguang Electric Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-03-11
Anticipated expiration: 2031-07-30

Abstract

The utility model provides a coil fixing device and a fatigue detector, wherein a supporting component of the coil fixing device is arranged around a coil component, the inner side of the supporting component is detachably connected with the coil component, and the outer side of the supporting component is fixedly connected with the inner side of a shell bracket; the upper supporting group and the lower supporting group of the supporting component are symmetrically arranged at two ends of the coil component, the annular elastic part of the upper supporting group and the lower supporting group is arc-shaped along the axial section of the coil component, the first connecting piece surrounds the coil component, the inner side of the first connecting piece is fixed on the coil component, the outer side of the first connecting piece is vulcanized and connected with one end of the arc close to the coil component, the second connecting piece surrounds the annular elastic part, the inner side of the second connecting piece is vulcanized and connected with the other end of the arc, and the outer side of the second connecting piece is fixedly connected with the shell support. The utility model can improve the connection strength and the impact resistance of the support assembly, ensure the consistency of reciprocating stress of the coil assembly, improve the stability of the motion direction and the motion amplitude of the linear motor and improve the motion precision of the linear motor.

Description

Coil fixing device and fatigue detector

Technical Field

The utility model relates to the field of coil fixing, in particular to a coil fixing device and a fatigue detector.

Background

The linear motor is a transmission device which directly converts electric energy into linear motion mechanical energy, and is also called a linear motor, a push rod motor and the like. The linear motor generally comprises a vibrator and a stator, the vibrator of the linear motor generally reciprocates under the action of ampere force, and transmission mechanisms such as gears and the like are not needed for transmission. Therefore, the linear motor is widely used in various manufacturing and processing technical fields based on its simple structure and a characteristic of being capable of realizing linear motion.

In the prior art, linear motors are respectively of moving-coil type and moving-iron type, wherein a coil assembly in the moving-coil type is fixed inside the motor by a support assembly. The supporting component is fixed together in an adhesive bonding mode and is fixed on the side face of the coil component so as not to contact other devices of the motor. However, the glue bonding mode generally has the problems of insufficient connection strength, poor impact resistance and short service life; moreover, the mode of fixing the support component on the side surface of the coil component can not keep the stability of the moving direction of the coil component, and the moving amplitude of the coil component is difficult to control, thereby reducing the moving precision of the motor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a coil fixing device, wherein a coil assembly is fixed on a shell support through an upper support group and a lower support group at two ends of the coil assembly, the inner side and the outer side of an annular elastic piece are sequentially connected with a first connecting piece and a second connecting piece in a vulcanization mode, and the first connecting piece and the second connecting piece are respectively and fixedly connected with the coil assembly and the shell support, so that the connection strength and the shock resistance of the support assembly can be improved, the service life of the coil fixing device is prolonged, the consistency of reciprocating stress of the coil assembly is ensured through the symmetrical and balanced arrangement of the annular elastic piece, the stability of the motion direction and the motion amplitude of a linear motor is improved, and the motion precision of the linear motor is improved.

In order to solve the above problems, the present invention adopts a technical solution as follows: a coil fixing device is applied to a linear motor and arranged between a coil assembly and a shell bracket, and comprises a supporting assembly, wherein the supporting assembly is arranged around the coil assembly, the inner side of the supporting assembly is detachably connected with the coil assembly, and the outer side of the supporting assembly is fixedly connected with the inner side of the shell bracket; the supporting component comprises an upper supporting group and a lower supporting group, the upper supporting group and the lower supporting group are symmetrically arranged at two ends of the coil component, the upper supporting group and the lower supporting group respectively comprise a first connecting piece, a second connecting piece and an annular elastic piece, the annular elastic piece is arranged along the axial section of the coil component and is arc-shaped, the first connecting piece surrounds the coil component, the inner side of the first connecting piece is fixed on the coil component, the outer side of the first connecting piece is close to the arc-shaped one end of the coil component, the second connecting piece surrounds the annular elastic piece, the inner side of the second connecting piece is connected with the other end of the arc-shaped annular elastic piece in a vulcanization mode, and the outer side of the second connecting piece is fixedly connected with the shell support.

Further, the shell support comprises a first boss and a second boss, the first boss and the second boss are arranged on the inner side of the shell support and respectively surround the upper support group and the lower support group, and second connecting pieces of the upper support group and the lower support group are respectively fixed on the first boss and the second boss.

Further, one side of the annular elastic member is provided with an annular opening surrounding the coil assembly, and the annular opening of the upper support group and the annular opening of the lower support group are opposite to each other.

Further, the annular elastic member is a thermoplastic elastic member.

Furthermore, a fixing hole is formed in one side, close to the coil assembly, of the first connecting piece, the fixing hole is arranged around the first connecting piece at intervals, a first protruding portion is arranged on the coil assembly, opposite to the fixing hole, and the first protruding portion corresponds to the fixing hole in a one-to-one mode and is inserted into the fixing hole so that the first connecting piece can be fixed on the coil assembly.

Based on the same inventive concept, the utility model further provides a fatigue detector which comprises a coil assembly, a coil fixing device and a shell support, wherein the coil fixing device is arranged between the coil assembly and the shell support and comprises a supporting assembly, the supporting assembly is arranged around the coil assembly, the inner side of the supporting assembly is detachably connected with the coil assembly, and the outer side of the supporting assembly is fixedly connected with the inner side of the shell support; the supporting component comprises an upper supporting group and a lower supporting group, the upper supporting group and the lower supporting group are symmetrically arranged at two ends of the coil component, the upper supporting group and the lower supporting group respectively comprise a first connecting piece, a second connecting piece and an annular elastic piece, the annular elastic piece is arranged along the axial section of the coil component and is arc-shaped, the first connecting piece surrounds the coil component, the inner side of the first connecting piece is fixed on the coil component, the outer side of the first connecting piece is close to the arc-shaped one end of the coil component, the second connecting piece surrounds the annular elastic piece, the inner side of the second connecting piece is connected with the other end of the arc-shaped annular elastic piece in a vulcanization mode, and the outer side of the second connecting piece is fixedly connected with the shell support.

Further, the annular elastic member is a thermoplastic elastic member.

Compared with the prior art, the utility model has the beneficial effects that: through the last supporting group at coil pack both ends, the lower support group is fixed the coil pack on shell support, with the inboard of annular elastic component, the outside in proper order with first connecting piece, the second connecting piece vulcanizes and is connected, and make first connecting piece, the second connecting piece respectively with coil pack, shell support fixed connection, the joint strength and the shock resistance that can improve supporting component, the life-span of coil fixing device has been prolonged, and through the mode that annular elastic component symmetry balance set up, the uniformity of the reciprocal atress of coil pack has been guaranteed, the stability of linear electric motor direction of motion and motion amplitude has been improved, linear electric motor's motion precision has been promoted.

Drawings

FIG. 1 is a cross-sectional view of one embodiment of a coil fixing device of the present invention;

FIG. 2 is a block diagram of one embodiment of a housing bracket in the coil fixing device of the present invention;

FIG. 3 is a cross-sectional view of one embodiment of a housing bracket in the coil fixing device of the present invention;

FIG. 4 is a cross-sectional view of an embodiment of a fatigue detector using a coil fixing device according to the present invention.

In the figure: 62. a first connecting member; 61. an annular elastic member; 63. a second connecting member; 72. a framework; 73. a drive coil; 41. a first boss; 42. a second boss; 43. a third boss; 3. a fixing ring; 1. a base; 221. a first upright post; 222. a second upright post; 21. a connecting end; 51. connecting a bracket; 52. a connecting rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

Referring to fig. 1-3, fig. 1 is a cross-sectional view of an embodiment of a coil fixing device according to the present invention; FIG. 2 is a block diagram of one embodiment of a housing bracket in the coil fixing device of the present invention; fig. 3 is a sectional view of an embodiment of a housing holder in the coil fixing apparatus of the present invention, wherein the sectional direction in fig. 1 and 3 is parallel to the axial direction of the coil block. The coil fixing device of the present invention will be described in detail with reference to fig. 1 to 3.

In this embodiment, the coil fixing device is applied to a linear motor and is arranged between the coil assembly and the housing bracket, the coil fixing device comprises a supporting assembly, the supporting assembly is arranged around the coil assembly, the inner side of the supporting assembly is detachably connected with the coil assembly, and the outer side of the supporting assembly is fixedly connected with the inner side of the housing bracket; the supporting component comprises an upper supporting group, a lower supporting group, the upper supporting group, the lower supporting group is symmetrically arranged at two ends of the coil component, the upper supporting group, the lower supporting group comprises a first connecting piece 62, a second connecting piece 63, an annular elastic piece 61, the annular elastic piece 61 is arc-shaped along the axial section of the coil component, the first connecting piece 62 surrounds the coil component, the inner side is fixed on the coil component, the outer side is vulcanized and connected with one end of the arc close to the coil component, the second connecting piece 63 surrounds the annular elastic piece 61, the inner side is vulcanized and connected with the other end of the arc, and the outer side is fixedly connected with the shell support.

In this embodiment, the first connecting member 62 and the second connecting member 63 may be made of a metal material, a rubber material, a ceramic material, or other normal temperature fixing materials capable of withstanding frequent vibration and fixing the annular elastic member 61.

In this embodiment, the first connecting member 62, the second connecting member 63 and the annular elastic member 61 may be connected together by vulcanization or injection molding. In other embodiments, the three components can be fixed by glue, stitching, or other fixing methods.

In the present embodiment, the coil assembly includes a framework 72 and a driving coil 73, wherein the framework 72 is a cylindrical structure, the driving coil 73 is wound outside the framework 72, and the first connecting members 62 are fixed at two ends of the framework 72.

In this embodiment, the housing bracket includes a first boss 41 and a second boss 42, the first boss 41 and the second boss 42 are disposed on the inner side of the housing bracket and respectively surround the upper support set and the lower support set, and the second connecting members 63 of the upper support set and the lower support set are respectively fixed on the first boss 41 and the second boss 42. The first boss 41 and the second boss 42 are ring-shaped members, the ring-shaped members are arranged around the coil assembly, one side of each ring-shaped member is fixed on the shell support, the other side of each ring-shaped member extends towards the direction close to the coil assembly to form an annular platform, and the second connecting member 63 is fixed on the annular platform. The second connecting member 63 can be fixed to the annular platform by glue, screw, snap, or other means.

In this embodiment, the shell support further includes stand, solid fixed ring 3, third boss 43 and base 1, and solid fixed ring 3, base 1 set up at the coil pack both ends, and the stand both ends are fixed respectively on base 1, solid fixed ring 3. The base 1 is a cylindrical hollow structure, the outer diameter of the cylindrical hollow structure is smaller than the inner diameter of the fixing ring 3, one end of the base 1 extends to the inner side of the framework 72, and the other end of the base is connected with the stand column.

In a specific embodiment, the upright comprises a first upright 221, a second upright 222 and a connecting end 21, wherein the first upright 221 and the second upright 222 are arranged in parallel, one end of the first upright 221 and the second upright 222 is connected with the fixing ring 3, the other end of the first upright is bent in a direction close to the base 1 and is connected with one end of the connecting end 21, and the other end of the connecting end 21 extends in a direction close to the base 1 and is connected with the outer side of the base 1.

In the present embodiment, one side of the annular elastic member 61 is provided with an annular opening surrounding the coil block, and the annular opening of the upper support group and the annular opening of the lower support group are opposite to each other. Wherein the opening plane of the annular opening of the lower support group is parallel to the first boss 41 and the opening plane of the annular opening of the lower support group is parallel to the second boss 42.

In other embodiments, the annular openings of the annular elastic member 61 may be opposite to each other.

In the present embodiment, the annular elastic member 61 is a thermoplastic elastic member.

In this embodiment, the first connecting member 62 is provided with fixing holes near one side of the coil assembly, the fixing holes are spaced around the first connecting member 62, and the first connecting member 62 is fixed on the coil assembly through the fixing holes. The fixing holes correspond to the through holes at the two ends of the framework 72 one by one.

In this embodiment, the coil assembly is further provided at two ends thereof with a limiting ring and a tension clamp spring which are matched with the first connecting member 62, wherein the limiting ring includes a first limiting member and a second limiting member, the first limiting member is disposed around the outer side of the framework 72, the width of the first limiting member is the same as that of the first connecting member 62, the outer side of the first limiting member is provided with first protruding portions which are one-to-one corresponding to the fixing holes of the first connecting member 62, the inner side of the first limiting member is provided with grooves which are one-to-one corresponding to the through holes on the framework 72, and the first protruding portions are one-to-one corresponding to the fixing holes and inserted into the fixing holes to fix the first connecting member 62 on the coil assembly. The second limiting member is disposed around the inner side of the frame 72, and a protrusion structure is disposed on a side facing the first limiting member, and the protrusion structure passes through the through hole of the frame 72 and is fixed in the groove of the first limiting member. An annular groove is formed in the inner side of the second limiting part, and the tension clamp spring is fixed in the annular groove. The retainer ring is pushed toward the first connecting member 62 by the radially outward tension of the tension clamp spring, so that the retainer ring is effectively fixed with the first connecting member 62.

In other embodiments, the limiting ring may be eliminated, and the first protrusion is disposed on the frame 72, or the first protrusion is disposed on the tension clamp spring, so that the first protrusion on the tension clamp spring passes through the through hole on the frame 72 and is connected to the fixing hole on the first connecting member 62.

In other embodiments, the fixing holes may also be screw holes or slots, and the first connecting member 62 and the coil assembly are fixed together by providing screws or fasteners on the frame 72.

Has the advantages that: the coil fixing device fixes the coil assembly on the shell support through the upper support group and the lower support group at the two ends of the coil assembly, sequentially vulcanizes and connects the inner side and the outer side of the annular elastic part with the first connecting piece and the second connecting piece, and fixedly connects the first connecting piece and the second connecting piece with the coil assembly and the shell support respectively, so that the connection strength and the impact resistance of the support assemblies can be improved, the service life of the coil fixing device is prolonged, the consistency of reciprocating stress of the coil assembly is ensured through the symmetrical and balanced arrangement of the annular elastic part, the stability of the motion direction and the motion amplitude of the linear motor is improved, and the motion precision of the linear motor is improved.

Based on the same inventive concept, the present invention further provides a fatigue detector, please refer to fig. 4, and fig. 4 is a cross-sectional view of an embodiment of the fatigue detector of the present invention, wherein a cutting direction of the fatigue detector is parallel to an axial direction of the coil assembly. The fatigue detector of the present invention will be explained with reference to fig. 4.

The fatigue detector comprises a coil assembly, a coil fixing device and a shell support, wherein the linear motor comprises the coil assembly, the coil fixing device is arranged between the coil assembly and the shell support, the coil fixing device comprises a supporting assembly, the supporting assembly is arranged around the coil assembly, the inner side of the supporting assembly is detachably connected with the coil assembly, and the outer side of the supporting assembly is fixedly connected with the inner side of the shell support; the supporting component comprises an upper supporting group, a lower supporting group, the upper supporting group, the lower supporting group is symmetrically arranged at two ends of the coil component, the upper supporting group, the lower supporting group comprises a first connecting piece 62, a second connecting piece 63, an annular elastic piece 61, the annular elastic piece 61 is arc-shaped along the axial section of the coil component, the first connecting piece 62 surrounds the coil component, the inner side is fixed on the coil component, the outer side is vulcanized and connected with one end of the arc close to the coil component, the second connecting piece 63 surrounds the annular elastic piece 61, the inner side is vulcanized and connected with the other end of the arc, and the outer side is fixedly connected with the shell support.

In the present embodiment, the coil assembly includes a framework 72 and a driving coil 73, wherein the framework 72 is a cylindrical structure, the driving coil 73 is wound outside the framework 72, and the first connecting members 62 are fixed at two ends of the framework 72. Wherein, the skeleton 72 sets up the one end inboard of supporting group and is provided with linking bridge 51, linking bridge 51 one end and skeleton 72 internal connection, and the other end is provided with the connecting hole that holds connecting rod 52, and connecting rod 52 one end is fixed in this connecting hole, and the other end is connected with the anchor clamps of the fixed component of waiting to detect. The connecting rod 52 is driven to move through the up-and-down linear motion of the coil assembly, and then the connecting rod 52 is utilized to drive the element to be detected to move, so that the fatigue detection of the element to be detected is realized.

In the present embodiment, one side of the annular elastic member 61 is provided with an annular opening surrounding the coil block, and the annular opening of the upper support group and the annular opening of the lower support group are opposite to each other. Wherein the opening plane of the annular opening is parallel to the first boss 41 and the second boss 42.

In this embodiment, the coil assembly is further provided at two ends thereof with a limiting ring and a tension clamp spring which are matched with the first connecting member 62, wherein the limiting ring includes a first limiting member and a second limiting member, the first limiting member is disposed around the outer side of the framework 72, the width of the first limiting member is the same as that of the first connecting member 62, the outer side of the first limiting member is provided with first protruding portions which are one-to-one corresponding to the fixing holes of the first connecting member 62, the inner side of the first limiting member is provided with grooves which are one-to-one corresponding to the through holes on the framework 72, and the first protruding portions are one-to-one corresponding to the fixing holes and inserted into the fixing holes to fix the first connecting member 62 on the coil assembly. The second limiting member is disposed around the inner side of the frame 72, and a protrusion structure is disposed on a side facing the first limiting member, and the protrusion structure passes through the through hole of the frame 72 and is fixed in the groove of the first limiting member. An annular groove is formed in the inner side of the second limiting part, and the tension clamp spring is fixed in the annular groove. The retainer ring is pushed toward the first connecting member 62 by the radially outward tension of the tension clamp spring, so that the retainer ring is effectively fixed with the first connecting member 62. The inner side of the second limiting piece at one end of the upper support set arranged on the framework 72 is further connected with the connecting support 51 in a vulcanization mode, and the connecting support 51 is fixed with the framework 72 through the second limiting piece.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coil fixing device is characterized in that the coil fixing device is applied to a linear motor and arranged between a coil assembly and a shell support, the coil fixing device comprises a supporting assembly, the supporting assembly is arranged around the coil assembly, the inner side of the supporting assembly is detachably connected with the coil assembly, and the outer side of the supporting assembly is fixedly connected with the inner side of the shell support;

the supporting component comprises an upper supporting group and a lower supporting group, the upper supporting group and the lower supporting group are symmetrically arranged at two ends of the coil component, the upper supporting group and the lower supporting group respectively comprise a first connecting piece, a second connecting piece and an annular elastic piece, the annular elastic piece is arranged along the axial section of the coil component and is arc-shaped, the first connecting piece surrounds the coil component, the inner side of the first connecting piece is fixed on the coil component, the outer side of the first connecting piece is close to the arc-shaped one end of the coil component, the second connecting piece surrounds the annular elastic piece, the inner side of the second connecting piece is connected with the other end of the arc-shaped annular elastic piece in a vulcanization mode, and the outer side of the second connecting piece is fixedly connected with the shell support.

2. The coil fixing device according to claim 1, wherein the housing bracket includes a first boss and a second boss, the first boss and the second boss are disposed on an inner side of the housing bracket and respectively surround the upper support set and the lower support set, and the second connecting members of the upper support set and the lower support set are respectively fixed on the first boss and the second boss.

3. The coil fixing apparatus as claimed in claim 1, wherein one side of the annular elastic member is provided with an annular opening surrounding the coil block, and the annular opening of the upper support group and the annular opening of the lower support group are opposite to each other.

4. The coil securing device according to claim 1, wherein the annular elastic member is a thermoplastic elastic member.

5. The coil fixing device according to claim 1, wherein the first connecting member is provided with fixing holes at a side thereof adjacent to the coil block, and first protrusions are provided on the coil block at positions opposite to the fixing holes, the first protrusions corresponding to the fixing holes one by one and being inserted into the fixing holes to fix the first connecting member to the coil block.

6. The fatigue detector is characterized by comprising a coil assembly, a coil fixing device and a shell support, wherein the coil fixing device is arranged between the coil assembly and the shell support, the coil fixing device comprises a supporting assembly, the supporting assembly is arranged around the coil assembly, the inner side of the supporting assembly is detachably connected with the coil assembly, and the outer side of the supporting assembly is fixedly connected with the inner side of the shell support;

7. The fatigue detector of claim 6, wherein the housing bracket comprises a first boss and a second boss, the first boss and the second boss are disposed on an inner side of the housing bracket and respectively surround the upper support set and the lower support set, and the second connecting members of the upper support set and the lower support set are respectively fixed on the first boss and the second boss.

8. The fatigue detector of claim 6, wherein one side of the annular elastic member is provided with an annular opening surrounding the coil assembly, the annular opening of the upper support set and the annular opening of the lower support set being opposite to each other.

9. The fatigue detector of claim 6, wherein the annular elastomeric member is a thermoplastic elastomeric member.

10. The fatigue detector according to claim 6, wherein the first connecting member is provided with fixing holes at a side thereof adjacent to the coil block, the fixing holes are spaced around the first connecting member, and first protrusions are provided on the coil block at positions opposite to the fixing holes, the first protrusions corresponding to the fixing holes one by one and being inserted into the fixing holes to fix the first connecting member to the coil block.