CN215643909U - Magnetic yoke iron core - Google Patents
Magnetic yoke iron core Download PDFInfo
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- CN215643909U CN215643909U CN202122285097.3U CN202122285097U CN215643909U CN 215643909 U CN215643909 U CN 215643909U CN 202122285097 U CN202122285097 U CN 202122285097U CN 215643909 U CN215643909 U CN 215643909U
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Abstract
The utility model provides a magnetic yoke iron core which comprises an iron core main body, wherein a first installation space and a second installation groove are sequentially and concentrically distributed on the iron core main body from inside to outside, the first installation space penetrates through the center of the iron core main body along the axial direction of the iron core main body, the opening of the second installation groove faces to a second shaft end, a friction disc and a movable plate corresponding to a first shaft end are installed in the first installation space, the first shaft end is the opposite end of the second shaft end, and a coil is installed in the second installation groove. When the magnetic yoke iron core provided by the utility model is assembled to form the brake, the friction disc, the movable plate, the coil and the like are all positioned in the first mounting space and the second mounting groove in the iron core main body, so that the thickness of the brake is the sum of the thickness of the iron core main body and the thickness of the armature, the structure is compact, the space utilization rate is high, and the thickness is much smaller than that of the traditional stacked structure.
Description
Technical Field
The utility model belongs to the technical field of mechanical braking, and particularly relates to a magnetic yoke iron core.
Background
The brake has an open type and a closed type, and the main parts are assembled in a stacking type whether the brake is open type or closed type, namely a magnetic yoke, an armature, a friction disc and a tail plate are stacked in sequence, and the brake is thick as a whole although the structure is simple.
With the increasing technical requirements on the electromagnetic brake, the thickness gradually becomes a key parameter for the performance of the weighing brake, and particularly in some special application occasions, the whole thickness of the brake is required to be small, and the traditional stacked structure brake cannot meet the requirements. The thickness of the parts can only be reduced by trying to compress them using better materials and more elaborate processes to reduce the total stack thickness, which inevitably leads to other disadvantages:
(1) if the thickness of the magnetic yoke is reduced, the coil space is reduced, the magnetic field of the coil is weakened or the heating power of the coil is increased;
(2) after the thicknesses of the armature, the friction disc and the tail plate are reduced (the diameter-thickness ratio is increased), the integral rigidity is weakened, creep deformation is easy to generate, or stress deformation or thermal stress deformation is generated in the working process, the temperature rise of parts is fast in the braking process (because the materials are few, the heat capacity is small), the braking torque attenuation is easy to occur, and even the brake is thoroughly damaged;
(3) after the thickness of the friction disc is reduced, the structural strength is insufficient, the processing difficulty is increased, the verticality between the middle hole and the friction surface is poor, the matching length with the shaft or the shaft sleeve is small, the friction disc is easy to swing in the rotating process, abnormal sound is generated, and the dragging torque is increased; when the friction disc rotates at a high speed, the surface of the friction disc is easy to be partially ablated, so that the friction torque is reduced, and the braking effect and the safety are influenced;
(4) extremely thin friction pair parts (armature, friction disc and tail plate) can amplify noise (similar to the action of a loudspeaker diaphragm) or make the noise sharper during friction;
(5) the friction disc has large friction radius, and the friction linear velocity under the same motor rotating speed is high and sometimes exceeds the working linear velocity suitable for the material, so that the wear rate is increased, and the braking effect is reduced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a magnetic yoke iron core, aiming at realizing the reduction of the thickness of a brake.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a yoke iron core, includes the iron core main part, it has first installation space and second mounting groove to distribute concentrically in proper order from inside to outside in the iron core main part, first installation space is followed the axial of iron core main part link up the central point of iron core main part puts, the opening of second mounting groove is towards the second axle end, be used for installing friction disk and the fly leaf corresponding to first axle head in the first installation space, first axle head is the looks remote site of second axle end, be used for installing the coil in the second mounting groove.
In a possible implementation manner, an annular installation area for installing a connecting piece is formed on the iron core main body, the installation area is located between the first installation space and the second installation groove, a plurality of connecting holes uniformly distributed around the axis of the iron core main body are formed in the installation area, and the connecting holes are used for installing and connecting the connecting piece of the armature and the movable plate.
In some embodiments, a plurality of mounting holes are further formed in the mounting region, the mounting holes penetrate through the core body along the axial direction of the core body, and the mounting holes and the connecting holes are alternately arranged.
In some embodiments, the mounting region is further provided with a blind hole opened toward the second shaft end, the blind hole is opened on both sides of each connecting hole on an annular path where the connecting holes are distributed, and the blind hole is used for mounting an elastic member.
In a possible implementation manner, a positioning groove is formed in the first axial end surface of the iron core main body, the positioning groove is communicated with the first installation space, and the positioning groove is used for positioning the movable plate.
In some embodiments, the positioning groove is provided in a plurality, and the positioning grooves are uniformly distributed around the axis of the iron core main body.
In a possible implementation manner, the iron core main body is further provided with at least one third mounting groove coaxially disposed with the second mounting groove, and an opening of the third mounting groove faces a second shaft end of the iron core main body.
In one possible implementation, the inner side surface of the first installation space near the second shaft end is provided with an extension portion extending toward the axis of the core main body.
In the embodiment of the application, compared with the prior art, when the brake is formed by assembling, the friction disc, the movable plate, the coil and the like are all positioned in the first mounting space and the second mounting groove in the iron core main body, so that the thickness of the brake is the sum of the thickness of the iron core main body and the thickness of the armature, the structure is compact, the space utilization rate is high, and the thickness is much smaller than that of a traditional stacked structure; the thicknesses of the friction disc, the movable plate and the coil depend on the thickness of the iron core main body and the depth of the second mounting groove, so that the thicknesses of the friction disc, the movable plate and the coil do not need to be compressed excessively, reasonable strength can be ensured, excessive materials and processing cost are not needed, and proper coil volume and power are ensured; the thickness of the friction disc can be properly increased, so that the overall structural strength of the friction disc can be improved, the friction disc is convenient to process, the verticality between the middle hole and the friction surface can be easily ensured, the matching length between the friction disc and the shaft sleeve or the shaft is increased, the shaking and dragging torque in the rotating process is reduced, and the friction disc is particularly suitable for occasions with high rotating speed or high requirements on silence; the friction disk is arranged in the first installation space, and compared with the traditional friction disk, the friction disk is smaller in diameter, low in friction linear speed at the same motor rotating speed, low in wear rate and long in service life.
Drawings
Fig. 1 is a schematic perspective view of a yoke core according to a first embodiment of the present invention;
fig. 2 is a schematic perspective view of a yoke core according to a first embodiment of the present invention;
fig. 3 is a schematic cross-sectional structural diagram of a yoke core according to an embodiment of the present invention.
Fig. 4 is a schematic perspective view of a yoke core according to a second embodiment of the present invention.
Description of reference numerals:
10-a core body; 11-a first installation space; 12-a second mounting groove; 13-an extension; 14-connecting holes; 15-mounting holes; 16-blind holes; 17-a positioning groove; 18-third mounting groove.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 to 4 together, a yoke core according to the present invention will now be described. The magnetic yoke iron core comprises an iron core body 10, wherein a first installation space 11 and a second installation groove 12 are sequentially and concentrically distributed on the iron core body 10 from inside to outside, the first installation space 11 penetrates through the center of the iron core body along the axial direction of the iron core body 10, the opening of the second installation groove 12 faces the second shaft end, a friction disc and a movable plate corresponding to the first shaft end are installed in the first installation space 11, the first shaft end is the opposite end of the second shaft end, and a coil is installed in the second installation groove 12.
The brake structure of the iron core main body 10 of the present embodiment assembled with other parts is: the movable plate is installed at a position, close to a first shaft end, of the first installation space 11, the friction disc is located in the first installation space 11 and located on one side, close to a second shaft end, of the movable plate, due to the fact that the friction disc is matched with the shaft sleeve or the shaft, axial positioning of the friction disc is achieved through the shaft sleeve or the shaft, the coil is installed in the second installation groove 12, the armature is required to be covered at an opening of the second installation groove 12 and connected with the movable plate, a spring is required to be arranged between the armature and the iron core main body, and the armature can drive the movable plate to move in an axial path of the iron core main body 10. When the friction disc is electrified, the iron core main body 10 generates magnetic force under the excitation of the coil, the armature is attracted by the magnetic force, the armature drives the movable plate to move away from the second shaft end, and the movable plate releases the friction disc to finish the releasing process; when the power is off, the magnetic force on the armature disappears, the armature is pushed by the elastic force of the spring, the armature drives the movable plate to move towards the second shaft end until the movable plate is tightly attached to the friction disc, and the friction resistance between the movable plate and the friction disc realizes the braking process.
Compared with the prior art, when the brake is formed by assembling, the friction disc, the movable plate, the coil and the like are all positioned in the first installation space 11 and the second installation groove 12 inside the iron core main body 10, so that the thickness of the brake is the sum of the thickness of the iron core main body 10 and the thickness of the armature, the structure is compact, the space utilization rate is high, and the thickness is much smaller than that of the traditional stacked structure; the thicknesses of the friction disc, the movable plate and the coil depend on the thickness of the core body 10 and the depth of the second mounting groove 12, so that the thicknesses of the friction disc, the movable plate and the coil do not need to be excessively compressed, reasonable strength can be ensured, excessive materials and processing cost are not needed, and proper coil volume and power are ensured; the thickness of the friction disc can be properly increased, so that the overall structural strength of the friction disc can be improved, the friction disc is convenient to process, the verticality between the middle hole and the friction surface can be easily ensured, the matching length between the friction disc and the shaft sleeve or the shaft is increased, the shaking and dragging torque in the rotating process is reduced, and the friction disc is particularly suitable for occasions with high rotating speed or high requirements on silence; the friction disk is arranged in the first installation space 11, and compared with the traditional friction disk, the friction disk is smaller in diameter, low in friction linear speed at the same motor rotating speed, low in wear rate and long in service life.
In some embodiments, a modified embodiment of the core body 10 may adopt a structure as shown in fig. 1 to 2 and 4. Referring to fig. 1 to 2 and 4, an annular mounting region for mounting a connector is formed on the core body 10, the mounting region is located between the first mounting space 11 and the second mounting groove 12, the mounting region has a plurality of connection holes 14 uniformly distributed around an axis of the core body 10, and the connection holes 14 are used for mounting a connector connecting the armature and the movable plate. Since the armature needs to be connected to the movable plate located at the first axial end, the connection member passes through the connection hole 14 and can slide in the connection hole 14 through the connection hole on the safety region, so that the installation position is in the region, the adjustment of the size of the installation region is realized by controlling the outer diameter of the first installation space 11 and the inner diameter of the second installation groove 12, the available area on the iron core main body 10 is fully utilized, and the structural compactness is improved.
In some embodiments, a modified embodiment of the core body 10 may be configured as shown in fig. 1 to 4. Referring to fig. 1 to 4, a plurality of mounting holes 15 are further formed in the mounting region, the mounting holes 15 penetrate through the core body 10 in an axial direction of the core body 10, and the mounting holes 15 and the connecting holes 14 are alternately arranged. When the brake formed by assembling the iron core main body 10 with other components is installed, a user needs to penetrate through the installation hole 15 and install a screw, and because the installation hole 15 and the connecting piece 80 are alternately arranged, the stability of the installation of the brake and the stability of the brake in use can be ensured.
As an alternative embodiment, the mounting holes 15 may not be arranged alternately with the connecting holes 14, but the alternate arrangement in this embodiment is more favorable for the stability of the connection.
In some embodiments, a modified embodiment of the core body 10 may adopt a structure as shown in fig. 2 and 4. Referring to fig. 2 and 4, blind holes 16 opening toward the second shaft end are further formed in the mounting area, on the annular path where the connecting holes 14 are distributed, the blind holes 16 are formed on two sides of each connecting hole 14, and the blind holes 16 are used for mounting elastic pieces. A spring (namely, an elastic element, hereinafter, referred to as a spring) needs to be installed between the iron core main body 10 and the armature, so that when the power is off, the armature is ensured to drive the movable plate to extrude the friction disc, and generally, the spring can be directly arranged between the armature and the iron core main body 10 without arranging the blind hole 16, but cannot guide the spring, and the specification of the spring is limited; under the condition that sets up blind hole 16, the spring is in blind hole 16, and the inner wall of blind hole 16 can play certain guide effect when the spring is flexible to longer specification can be chooseed for use to the spring, and life is longer.
By way of example, there is a connecting hole 14 between every two mounting holes 15, and there is a blind hole 16 on each side of the connecting hole 14, and the blind holes 16 on each side of the connecting hole 14 are located between two mounting holes 15.
In some embodiments, a modified embodiment of the core body 10 may adopt a structure as shown in fig. 1 and 3. Referring to fig. 1 and 3, a first axial end of the core body 10 forms a positioning groove 17, the positioning groove 17 is communicated with the first installation space 11, and the positioning groove 17 is used for positioning the movable plate. When the movable plate is installed, the positioning block corresponding to the positioning groove 17 is needed, so that the movable plate can play a role in fool-proofing and is convenient to install.
It should be noted that the depth of the positioning slot 17 needs to be greater than the thickness of the positioning block, one end of the connecting member is connected to the armature, and the other end is connected to the positioning block, and the movable plate needs to be driven by the armature to move along the axial direction of the iron core main body 10.
The design criteria of the depth of the positioning groove 17 is mainly determined by the sliding distance of the movable plate, the axial moving distance of the movable plate is equal to the length of the guide post-the thickness of the friction disc 30-the thickness of the extension part 13, and it can be seen that the depth of the positioning groove 17 cannot be smaller than the moving distance of the movable plate.
In some embodiments, a modified embodiment of the core body 10 may adopt a structure as shown in fig. 1 and 3. Referring to fig. 1 and 3, the positioning groove 17 is provided in plural, and the plural positioning grooves 17 are uniformly distributed around the axis of the core main body 10. Optionally, the number of the positioning grooves 17 is three, and since the connecting members are mainly mounted on the positioning blocks, the number of the positioning grooves 17 is increased, and the number of the positioning blocks on the corresponding movable plate is increased, so that the braking effect is better; the installation is also more convenient.
In some embodiments, a modified embodiment of the core body 10 may be configured as shown in fig. 4. Referring to fig. 4, the core body 10 is further provided with at least one third mounting groove 18 coaxially disposed with the second mounting groove 12, and the third mounting groove 18 opens toward the second axial end of the core body 10 for mounting the auxiliary coil. Under the condition that the coil in the second mounting groove 12 and the auxiliary coil in the third mounting groove 18 are simultaneously mounted, torque increase can be realized, large torque can be realized under the same outer diameter size and power condition compared with a single coil, the whole thickness is not increased, and the stacked type coil mounting structure has great advantages compared with the traditional stacked type structure.
It should be noted that the third mounting groove 18 is disposed coaxially with the second mounting groove 12, and the third mounting groove 18 may be located between the first mounting space 11 and the second mounting groove 12, or in an outer ring region of the second mounting groove 12, or in an inner ring region of the first mounting space 11.
In some embodiments, a modified embodiment of the core body 10 may be configured as shown in fig. 1 to 3. Referring to fig. 1 to 3, the inner side surface of the first mounting space 11 near the second shaft end is provided with an extension 13 extending toward the axis of the core main body 10. After the friction disc is installed, the extension portion 13 and the movable plate are respectively located at two ends of the friction disc, when the friction disc is in a power-off state, the armature drives the movable plate to be close to the friction disc, two shaft end faces of the friction disc are respectively in friction with the movable plate and the extension portion 13, braking is achieved, and braking strength is improved.
Further, one side of the extension portion 13 close to the axis of the iron core main body 10 is provided with an annular protrusion protruding towards the second shaft end, and the annular protrusion and the inner wall of the iron core main body 10 enclose to form a third mounting groove 18, so that the compactness of the structure is facilitated, and the space is fully utilized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a yoke iron core, its characterized in that, includes the iron core main part, it has first installation space and second mounting groove to distribute concentrically in proper order from inside to outside in the iron core main part, first installation space is followed the axial of iron core main part link up the central point of iron core main part puts, the opening of second mounting groove is towards the second axle end, be used for installing friction disk and the fly leaf corresponding to first axle head in the first installation space, first axle head is the looks remote site of second axle end, be used for installing the coil in the second mounting groove.
2. The yoke core as claimed in claim 1, wherein the core body is formed with an annular mounting region for mounting a connector, the mounting region being located between the first mounting space and the second mounting groove, the mounting region having a plurality of connection holes uniformly distributed around an axis of the core body for mounting a connector connecting the armature and the movable plate.
3. The yoke core as claimed in claim 2, wherein a plurality of mounting holes are further provided in the mounting region, the mounting holes penetrating the core body in an axial direction of the core body, the mounting holes being alternately arranged with the connecting holes.
4. The yoke core as claimed in claim 3, characterized in that the mounting region is further provided with blind holes opened toward the second axial end, and the blind holes are opened at both sides of each of the connecting holes on a circular path along which the connecting holes are distributed, the blind holes being used for mounting an elastic member.
5. The yoke core as claimed in claim 1, wherein a positioning groove for positioning a movable plate is formed at the first axial end surface of the core body, the positioning groove communicating with the first mounting space.
6. The yoke core as claimed in claim 5, wherein the positioning groove is provided in plural numbers, and the plural positioning grooves are uniformly distributed around the axis of the core body.
7. The yoke core as claimed in claim 1, wherein the core body is further provided with at least one third mounting groove coaxially disposed with the second mounting groove, the third mounting groove being opened toward the second axial end of the core body for mounting an auxiliary coil.
8. The yoke core according to claim 1, characterized in that an inner side surface of the first mounting space near the second shaft end is provided with an extension extending toward an axis of the core body.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122285097.3U CN215643909U (en) | 2021-09-18 | 2021-09-18 | Magnetic yoke iron core |
| PCT/CN2022/076703 WO2023040179A1 (en) | 2021-09-18 | 2022-02-17 | Magnetic yoke iron core and brake |
| US17/889,155 US20230086043A1 (en) | 2021-09-18 | 2022-08-16 | Magnetic Yoke Iron Core And Brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122285097.3U CN215643909U (en) | 2021-09-18 | 2021-09-18 | Magnetic yoke iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215643909U true CN215643909U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122285097.3U Active CN215643909U (en) | 2021-09-18 | 2021-09-18 | Magnetic yoke iron core |
Country Status (1)
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|---|---|
| CN (1) | CN215643909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040179A1 (en) * | 2021-09-18 | 2023-03-23 | 奥创动力传动(深圳)有限公司 | Magnetic yoke iron core and brake |
-
2021
- 2021-09-18 CN CN202122285097.3U patent/CN215643909U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040179A1 (en) * | 2021-09-18 | 2023-03-23 | 奥创动力传动(深圳)有限公司 | Magnetic yoke iron core and brake |
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