CN213852785U - Gyromagnetic generator - Google Patents

Abstract

The utility model belongs to the technical field of gyromagnetic devices, in particular to a gyromagnetic generating device, which comprises a bottom shell, an upper cover and a gyromagnetic unit which is rotatably arranged in the space enclosed by the bottom shell and the upper cover; the magnetic separation device also comprises a magnetic separation sheet arranged on the end face of the gyromagnetic unit, a magnetic ring arranged on the magnetic separation sheet and a plurality of mutually independent magnetic induction coils which are arranged on the inner bottom surface of the bottom shell in an array mode, wherein the plurality of magnetic induction coils are respectively spaced from the magnetic ring by a certain distance, and the spacing distances are consistent; the magnetic ring is in an annular structure with N, S pole magnetic sections alternating, and the annular structure formed by the magnetic induction coils and the magnetic ring are arranged coaxially. The utility model discloses the rotatory mode of drive gyromagnetic unit replaces traditional mechanical type link gear drive mode, avoids traditional mechanical type link gear to have the whole occupation space that inevitable impedance action caused big, the drawback that the power consumption is high, the noise is big for this gyromagnetic generating device has that occupation space is little, the power consumption is low, characteristics such as noise is low.

Description

Gyromagnetic generator

Technical Field

The utility model belongs to the technical field of gyromagnetic device, especially, relate to a gyromagnetic generating device.

Background

Research shows that the magnetic flux brought to human body by the dynamic permanent magnet magnetic field is far larger than that of the static permanent magnet magnetic field, and modern magnetic therapy gradually evolves from static permanent magnet magnetic field magnetic therapy to dynamic permanent magnet magnetic field magnetic therapy. The dynamic permanent magnet magnetic field is that the magnet in the magnetic therapy apparatus generates various motions, such as rolling motion, rotating motion, reciprocating motion and the like, so as to generate better blood circulation promoting effect and obtain better magnetic therapy health care effect.

With the wide popularization of magnetic therapy technology, gyromagnetic devices are mostly used in magnetic therapy equipment such as gyromagnetic beds, gyromagnetic pillows, gyromagnetic cushions, gyromagnetic waistbands and the like. In the prior art, most of the power of the gyromagnetic devices adopts a motor to drive a linkage mechanism to move so as to drive the gyromagnetic units to rotate, and therefore, the gyromagnetic devices occupy large space and are inconvenient to install into magnetic therapy equipment; secondly, the traditional mechanical linkage mechanism has an inevitable impedance effect, noise is easily caused, and when the rotating speed required by the gyromagnetic is high, the requirement on the rotating speed of the required motor is correspondingly high, so that the cost is increased and the brought noise is relatively increased; most of the magnetic therapy devices are attached to the body of a patient, and the comfort of the patient is affected by the defects brought by the power source of the existing gyromagnetic device. In addition, the gyromagnetic unit adopts a driving mode that a motor drives a linkage mechanism, and the parallelism between the shafts is required to be higher, so that the driving force transmitted to the gyromagnetic unit is large, however, the arrangement of the existing structure is difficult to achieve the requirement of higher parallelism, so that the driving force transmitted to the gyromagnetic unit is gradually reduced, and the defect of low efficacy is caused. Therefore, it is necessary to improve the driving method of the prior gyromagnetic unit to achieve the purposes of reducing the overall occupied volume, reducing the noise intensity and reducing the functional consumption.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gyromagnetic generating device aims at solving the gyromagnetic unit among the prior art and adopts the motor to drive its rotatory whole technical problem that occupies bulky, that consume energy is high and the noise is big that brings of link gear motion drive.

In order to achieve the above object, an embodiment of the present invention provides a gyromagnetic generating device, which comprises a cylindrical bottom shell, an upper cover and a rotating unit, wherein the upper cover and the upper cover are detachably mounted on the bottom shell, and the bottom shell is provided with an opening end. This structural design passes through the drain pan reaches the parcel effect of upper cover for the effect that the rotation of gyromagnetic unit is smooth and easy and effective noise isolation.

Optionally, the gyromagnetic generating device further comprises a magnetism isolating sheet arranged on the end face of the gyromagnetic unit, a magnetic ring arranged on the magnetism isolating sheet, and a plurality of mutually independent magnetic induction coils arranged on the inner bottom surface of the bottom case in an array manner, wherein the plurality of magnetic induction coils are respectively spaced from the magnetic ring by a certain distance, and the spacing distances are consistent; the magnetic ring is in an annular structure with N, S pole magnetic sections alternating, and the annular structure formed by the magnetic induction coils and the magnetic ring are arranged coaxially. According to the structure design, under the condition that the magnetic induction coil is electrified to generate an alternating magnetic field, the mutual magnetic force generated by the magnetic induction coil and the magnetic ring promotes the gyromagnetic unit to rotate to generate a gyromagnetic effect.

Optionally, the number of the magnetic induction coils is 6, and the number of the N, S-pole alternating magnetic segments in the magnetic ring is 8.

Optionally, the number of the magnetic induction coils is 9, and the number of the N, S-pole alternating magnetic segments in the magnetic ring is 12.

Optionally, the number of the magnetic induction coils is 12, and the number of the N, S-pole alternating magnetic segments in the magnetic ring is 16.

Optionally, a circuit board is arranged on the inner bottom surface of the bottom shell, and the plurality of magnetic induction coils are arranged on the circuit board through glue. The structural design realizes that the magnetic induction coil is introduced with alternating current.

Optionally, the magnetic induction coil and the circuit board are wrapped into a plate-shaped structure through silica gel. The structural design plays a role in protecting the magnetic induction coil and also plays a certain noise reduction effect.

Optionally, the gyromagnetic unit comprises a rotating disc made of a non-magnetic material, a magnet group arranged in the rotating disc, and a magnetic conductive sheet arranged in the rotating disc and abutted against the magnet group; the magnetism isolating sheet is fixedly arranged on the end face of the rotating disc, and the magnetism conducting sheet and the magnetism isolating sheet are arranged at an angle of 90 degrees. The magnetic conductive sheet and the magnetic separation sheet in the structural design are arranged at the two positions to play a role in weakening the loss of magnetic force lines of magnetic energy.

Optionally, the magnet group comprises at least one pair of magnetic blocks symmetrically distributed along the central line of the rotating disc, each magnetic block consists of two parts with different polarities, and the magnetic interface of each magnetic block and the horizontal plane form an included angle of not 90 degrees; the magnetism of the upper end surfaces of the two magnetic blocks in the same pair is arranged in different polarity states, and the upper end surfaces of the two adjacent magnetic blocks in different pairs are arranged in different polarity states. The structure actually realizes the magnetic energy magnetic force line to be diffused in a state of non-90 degrees between a magnetic interface and a horizontal plane, thereby achieving the purpose of expanding the diffusion range.

Optionally, the magnetic interface of the magnetic block is arranged at an angle of 30-60 degrees with the horizontal plane. The structural design increases the camber of magnetic lines of magnetic energy magnetic force, and increases the penetration depth and the radiation area.

Optionally, the rotating disc is provided with an article holding groove, an embedded groove communicated with the article holding groove and a weight reduction groove, the magnet is arranged in the article holding groove, and the magnetic conductive sheet is arranged in the embedded groove; the object placing groove and the embedding groove penetrate through the rotating disc, and the opening side of the weight reducing groove is located on one side of the magnetic separation sheet. The weight reduction groove in the structural design plays a role in reducing the self weight of the device and ensuring the stability in the self rotation process.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the gyromagnetic generating device have one of following technological effect at least:

1. the magnetic ring is in an annular structure with N, S pole magnetic sections alternating, an annular structure formed by a plurality of magnetic induction coils is arranged coaxially with the magnetic ring, alternating current is supplied to the magnetic induction coils to generate an alternating magnetic field, and the alternating current and the magnetic ring with N, S pole magnetic sections alternating generate continuous mutual magnetic force to drive the gyromagnetic unit to rotate, so that the effect of a rotating magnetic field is generated. The utility model discloses the drive traditional mechanical type link gear drive mode is replaced to the rotatory mode of gyromagnetic unit, avoids traditional mechanical type link gear to have the whole occupation space that inevitable impedance action caused big, the drawback that the power consumption is high, the noise is big for this gyromagnetic generating device has that occupation space is little, the power consumption is low, characteristics such as noise is low.

2. The magnetic interface of the magnetic block is arranged at an included angle of not 90 degrees with the horizontal plane; and the magnetism of the upper end surfaces of the two magnetic blocks in the same pair is arranged in different polarity states, and the upper end surfaces of the two adjacent magnetic blocks in different pairs are arranged in different polarity states. The utility model discloses realize that magnetic energy magnetic force line is the magnetism interface and personally submits non-90 state with the level and gives off, reaches the purpose that the scope was dispersed in the extension, realizes the effect that magnetotherapy region is wider than current magnetotherapy scope, avoids the magnetotherapy region that traditional magnet itself produced less, does not reach better magnetotherapy health care effect to the stimulation that the human body produced.

3. The magnetic separation sheet is fixedly arranged on the end face of the rotating disc, and the magnetic separation sheet are arranged at an angle of 90 degrees. The structural design effectively prevents magnetic leakage, can weaken the loss of magnetic force lines of magnetic energy, and improves the Gaussian intensity of the magnetic force lines of magnetic energy to achieve the effect of enhancing magnetic therapy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a gyromagnetic force generating device provided by the present invention;

fig. 2 is a schematic view of a separated structure of a bottom shell of the gyromagnetic generator according to the present invention;

fig. 3 is a schematic view of a partially exploded structure of a gyromagnetic generator according to a first embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 labeled A;

fig. 5 is a schematic view of a structure of the gyromagnetic unit and the magnetic ring according to the first embodiment of the present invention;

fig. 6 is a schematic cross-sectional structure view of a gyromagnetic unit according to a first embodiment of the present invention;

fig. 7 is a partially exploded schematic view of a gyromagnetic unit according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of a rotating disc according to a first embodiment of the present invention;

fig. 9 is a schematic view of a partially exploded structure of a gyromagnetic generator according to a second embodiment of the present invention;

wherein, in the figures, the respective reference numerals:

10-bottom shell, 20-upper cover, 30-gyromagnetic unit, 31-rotating disk, 311-storage groove, 312-embedded groove, 313-weight-reducing groove, 32-magnet group, 321-magnet, 33-magnetic conductive sheet, 40-magnetism isolating sheet, 50-magnetic ring, 60-magnetic induction coil, 70-circuit board, magnetic field generator, magnetic field,

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2, the present invention provides a gyromagnetic generator, which comprises a cylindrical bottom shell 10, an upper cover 20 and a gyromagnetic unit 30, wherein the upper cover 20 is detachably mounted on the open end of the bottom shell, and the gyromagnetic unit 30 is rotatably mounted on the bottom shell 10 and the upper cover 20. Specifically, the utility model discloses an upper cover 20 reaches drain pan 10 will in the space that magnetism unit 30 parcel was sealed to its enclose, played the effect of effective isolation noise, just magnetism unit 30 does not have other interference and can smoothly rotate. Of course, in order to further reduce noise, a sound absorbing structure, such as a sound absorbing cotton, may be additionally provided on the inner wall of the bottom case 10.

Example one

In the first embodiment of the present invention, as shown in fig. 3, the gyromagnetic generator further includes a magnetism isolating sheet 40 disposed on the end surface of the gyromagnetic unit 30, a magnetic ring 50 disposed on the magnetism isolating sheet, and a plurality of magnetic induction coils 60 which are disposed on the inner bottom surface of the bottom case 10 in an array and are independent of each other; the magnetic induction coils 60 are respectively spaced from the magnetic ring 50 by a certain distance, and the spacing distances are consistent; the magnetic ring 50 is in an annular structure with N, S pole magnetic sections alternating, and the annular structure formed by the magnetic induction coils 60 is coaxial with the magnetic ring 50. Specifically, the number of the magnetic induction coils 60 is 12, and the number of the N, S-pole alternating magnetic segments in the magnetic ring 50 is 16. As shown in fig. 4, when the magnetic induction coil 60 is energized with a positive pulse current, the magnetic induction coil generates a magnetic field with N polarity near one end of the magnetic ring 50, and at this time, the magnetic induction coil generates a repulsive force with the N pole magnetic segment on the magnetic ring 50, and at the same time, the S pole magnetic segment on the magnetic ring 50 and adjacent to the N pole magnetic segment generates an attractive force, so that the magnetic ring 50 rotates toward the S pole magnetic segment on the magnetic ring 50; when the magnetic ring 50 rotates a certain angle, a negative pulse current is applied to the magnetic induction coil 60, which generates a magnetic field with an S polarity near one end of the magnetic ring 50, and at this time, a repulsive force is generated with the S pole magnetic segment on the magnetic ring 50 rotating a certain angle, and an attractive force is generated with the N pole magnetic segment on the magnetic ring 50 and adjacent to the S pole magnetic segment, so that the magnetic ring 50 continues to rotate in the direction just before the rotation, and when the magnetic induction coil 60 continuously applies a repeated pulse current, the continuous rotation of the magnetic ring 50 is realized, and thus the synchronous rotation of the gyromagnetic unit 30 is realized, and a gyromagnetic effect is generated. The mode of driving the gyromagnetic unit 30 to rotate in this embodiment replaces the driving mode of the traditional mechanical linkage mechanism, and the defects of large overall occupied space, high energy consumption and high noise caused by the unavoidable impedance of the traditional mechanical linkage mechanism are avoided, so that the gyromagnetic generating device has the characteristics of small occupied space, low energy consumption, low noise and the like.

In the first embodiment of the present invention, as shown in fig. 5, the gyromagnetic unit 30 of the gyromagnetic generating apparatus includes a rotating disk 31 made of a non-magnetic material, a magnet group 32 disposed in the rotating disk, and a magnetic conductive sheet 33 disposed in the rotating disk and abutting against the magnet group 32. In this embodiment, the two ends of the magnetic shielding sheet 40 are detachably abutted to the magnet group 32 and the magnetic ring 50, the magnetic shielding sheet 40 is installed on the end face of the gyromagnetic unit 30, and the magnetic ring 50 is installed on the magnetic shielding sheet 40, so that the structural design further reduces the space occupancy rate, and plays a role in isolating the magnetic lines of force between the magnet group 32 and the magnetic ring 50, thereby preventing the mutual interference of the magnetic lines of force between the magnet group 32 and the magnetic ring 50 from affecting the operation of the gyromagnetic generating device.

In the first embodiment of the present invention, as shown in fig. 6, the magnet assembly 32 of the gyromagnetic generator includes a pair of magnetic blocks 321 symmetrically distributed about the central line of the rotating disc 31, the magnetic blocks are composed of two parts with different polarities, and the magnetic interface and the horizontal plane form an included angle of not 90 °; preferably, the magnetic interface of the magnetic block 321 is arranged at an angle of 30-60 degrees with the horizontal plane, so that the magnetic field lines of the magnetic energy of the magnetic block 321 have high camber, and the penetration depth and the radiation area are increased. Of course, the magnet set 32 may also be composed of more than two pairs of the magnetic blocks 321; specifically, the magnetism of the upper end surfaces of two magnetic blocks 321 in the same pair is set in different polarity states, and the upper end surfaces of two adjacent magnetic blocks 321 in different pairs are set in different polarity states. The utility model discloses realize that magnetic energy magnetic line of force is that the magnetic interface personally submits non-90 state with the level and gives off, and adjacent between magnetic path 321 magnetic line of force influences each other to reach the purpose that the extension magnetic line of force diverges the scope, realize the regional wider effect than current magnetotherapy scope of magnetotherapy, avoid the magnetotherapy region that traditional magnet itself produced less, can not reach better magnetotherapy health care effect to the stimulation that the human body produced.

In the first embodiment of the present invention, as shown in fig. 7, the magnetism isolating sheet 40 of the gyromagnetic generator is fixedly mounted on the end surface of the rotating disk 31, and the magnetic conducting sheet 33 and the magnetism isolating sheet 40 are disposed at 90 °. The magnetic conductive sheet 33 and the magnetic separation sheet 40 in the structural design are arranged to weaken the loss of magnetic force lines of magnetic energy.

In the first embodiment of the present invention, as shown in fig. 4, the bottom surface of the bottom shell 10 of the gyromagnetic generator is provided with a circuit board 70, which is a plurality of magnetic induction coils 60 are disposed on the circuit board 70 through glue, through the circuit board 70, the magnetic induction coils 60 are switched into alternating current. Furthermore, in order to protect the magnetic induction coil 60 and reduce noise, the magnetic induction coil 60 and the circuit board 70 are wrapped by a silicone rubber to form a plate-shaped structure.

In the first embodiment of the present invention, as shown in fig. 8, the rotating disk 31 is provided with a storage slot 311 and an embedded slot 312 communicated with the storage slot. Specifically, the storage slot 311 and the embedded slot 312 both penetrate through the rotating disc 31, the magnet 321 is disposed in the storage slot 311, and the magnetic conductive sheet 33 is disposed in the embedded slot 312.

In the first embodiment of the present invention, as shown in fig. 8, a weight reduction groove 313 is further formed on the rotating disc 31; specifically, the opening side of the weight-reducing groove 313 is located at one side of the magnetism-isolating sheet 40, the specific design adopts a symmetrical structural design, and the weight-reducing groove 313 plays a role in reducing the self weight of the device and ensuring the stability in the self rotation process.

Example two

In the second embodiment of the present invention, as shown in fig. 9, the gyromagnetic generator further includes a magnetism isolating sheet 40 disposed on the end surface of the gyromagnetic unit 30, the magnetic ring 50 disposed on the magnetism isolating sheet, and a plurality of magnetic induction coils 60 which are disposed on the inner bottom surface of the bottom case 10 in an array and are independent of each other; the magnetic induction coils 60 are respectively spaced from the magnetic ring 50 by a certain distance, and the spacing distances are consistent; the magnetic ring 50 is in an annular structure with N, S pole magnetic sections alternating, and the annular structure formed by the magnetic induction coils 60 is coaxial with the magnetic ring 50. In this embodiment, the number of the magnetic induction coils 60 is 6, and the number of the N, S-pole alternating magnetic segments in the magnetic ring 50 is 8.

It should be noted that the principle of driving the gyromagnetic unit 30 to rotate in this embodiment is the same as that of the first embodiment, and the structure of the gyromagnetic unit 30 is similar, so that the description thereof is omitted.

EXAMPLE III

In the third embodiment of the present invention, referring to fig. 3 and 9, the gyromagnetic generator further includes a magnetism isolating sheet 40 disposed on the end surface of the gyromagnetic unit 30, a magnetic ring 50 disposed on the magnetism isolating sheet, and a plurality of magnetic induction coils 60 which are disposed on the inner bottom surface of the bottom case 10 in an array and are independent of each other; the magnetic induction coils 60 are respectively spaced from the magnetic ring 50 by a certain distance, and the spacing distances are consistent; the magnetic ring 50 is in an annular structure with N, S pole magnetic sections alternating, and the annular structure formed by the magnetic induction coils 60 is coaxial with the magnetic ring 50. In this embodiment, the number of the magnetic induction coils 60 is 9, and the number of the N, S-pole alternating magnetic segments in the magnetic ring 50 is 12.

It should be noted that the principle of driving the gyromagnetic unit 30 to rotate in this embodiment is the same as that of the first embodiment, and the structure of the gyromagnetic unit 30 is similar, so that the description thereof is omitted.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A gyromagnetic generating device comprises a bottom shell in a cylindrical structure, an upper cover which is arranged at the opening end of the bottom shell and is detachably mounted with the bottom shell, and a gyromagnetic unit which is rotatably arranged in a space surrounded by the bottom shell and the upper cover; the method is characterized in that: the magnetic separation device also comprises a magnetic separation sheet arranged on the end face of the gyromagnetic unit, a magnetic ring arranged on the magnetic separation sheet and a plurality of mutually independent magnetic induction coils which are arranged on the inner bottom surface of the bottom shell in an array mode, wherein the plurality of magnetic induction coils are respectively spaced from the magnetic ring by a certain distance, and the spacing distances are consistent; the magnetic ring is in an annular structure with N, S pole magnetic sections alternating, and the annular structure formed by the magnetic induction coils and the magnetic ring are arranged coaxially.

2. The gyromagnetic force generation device according to claim 1, wherein: the number of the magnetic induction coils is 6, and the number of the N, S-pole alternating magnetic segments in the magnetic ring is 8.

3. The gyromagnetic force generation device according to claim 1, wherein: the number of the magnetic induction coils is 9, and the number of the N, S-pole alternating magnetic segments in the magnetic ring is 12.

4. The gyromagnetic force generation device according to claim 1, wherein: the number of the magnetic induction coils is 12, and the number of the N, S-pole alternating magnetic segments in the magnetic ring is 16.

5. A gyromagnetic force generation device according to any one of claims 2 to 4, wherein: the bottom surface in the bottom shell is provided with a circuit board, and the magnetic induction coils are arranged on the circuit board through glue.

6. The gyromagnetic force generation device according to claim 5, wherein: the magnetic induction coil and the circuit board are wrapped into a plate-shaped structure through silica gel.

7. The gyromagnetic force generation device according to claim 1, wherein: the gyromagnetic unit comprises a rotating disc made of a non-magnetic material, a magnet group arranged in the rotating disc and a magnetic conductive sheet arranged in the rotating disc and abutted against the magnet group; the magnetism isolating sheet is fixedly arranged on the end face of the rotating disc, and the magnetism conducting sheet and the magnetism isolating sheet are arranged at an angle of 90 degrees.

8. The gyromagnetic force generation device according to claim 7, wherein: the magnet group comprises at least one pair of magnetic blocks which are symmetrically distributed along the central line of the rotating disc, the magnetic blocks consist of two parts with different polarities, and the magnetic interface of the magnetic blocks and the horizontal plane form an included angle of not 90 degrees; the magnetism of the upper end surfaces of the two magnetic blocks in the same pair is arranged in different polarity states, and the upper end surfaces of the two adjacent magnetic blocks in different pairs are arranged in different polarity states.

9. The gyromagnetic force generation device according to claim 8, wherein: the magnetic interface of the magnetic block is arranged at an angle of 30-60 degrees with the horizontal plane.

10. The gyromagnetic force generation device according to claim 8, wherein: the rotating disc is provided with an object placing groove, an embedded groove communicated with the object placing groove and a weight reducing groove, the magnetic block is arranged in the object placing groove, and the magnetic conductive sheet is arranged in the embedded groove; the object placing groove and the embedding groove penetrate through the rotating disc, and the opening side of the weight reducing groove is located on one side of the magnetic separation sheet.

Images