External tooth type magnetic induction encoder and electronic device

Abstract

The utility model relates to an external tooth type magnetic induction encoder and an electronic device, and the external tooth type magnetic induction encoder comprises a housing and a rotor. A containing cavity is formed in the shell, a rotor positioning hole used for enabling one end of the rotor to penetrate to the outside is formed in the bottom of the containing cavity, the other end of the rotor is rotationally arranged in the containing cavity, a plurality of outer ring tooth positions are arranged on the peripheral surface of the rotor, a clamping groove communicated with the containing cavity is formed in the shell, and elastic pieces matched with the outer ring tooth positions are installed in the clamping groove. Therefore, when the rotor rotates, the elastic sheet is in contact with each outer ring tooth position to generate a gear feedback sense. Therefore, the elastic piece can be installed only by installing the elastic piece in the clamping groove during installation, installation is simple and convenient, the elastic piece is only subjected to the action of the side wall of the clamping groove and the outer ring tooth position during use, the stress quantity is small, the possibility of abrasion and fracture is reduced, and the service life of the elastic piece is effectively prolonged. According to the utility model, the gear feedback sense can be generated when the rotor rotates, the coordination installation is simpler and more convenient, the service life is longer, and the practicability is higher.

Description

Technical Field

[0001] The present application relates to the field of encoders, and more specifically, to an external-tooth magnetic induction encoder and an electronic device. Background Art

[0002] An encoder is a device that encodes and converts signals or data into a signal form that can be used for communication, transmission and storage.

[0003] In order to obtain a sense of feedback during use, that is, when the user drives the turntable to rotate in the shell, the user can obtain a sense of feedback. At present, a tooth position is usually arranged on the outer peripheral side of the turntable, and a hand feeling generating component is arranged in the shell, wherein the hand feeling generating component is configured as a torsion spring and a limit elastic member, the torsion spring is installed in the shell, one end of the limit elastic member rotates in the shell, and one end of the torsion spring abuts against the limit elastic member, so that when the wheel rotates, the limit elastic member is always in contact with each tooth position through the elastic force of the torsion spring. In this way, the torsion spring and the limit elastic member are matched to generate a sense of feedback, but when assembling, the torsion spring and the limit elastic member need to be installed separately, which is troublesome to install, and one end of the limit elastic member is limited by the shell, and the other end is affected by the torsion spring and the tooth position. The limit elastic member is subjected to more force, and is easy to break after long-term use, which reduces the service life and has low practicality. Utility Model Content

[0004] In order to overcome the problems that the limiting elastic member described in the above background technology is subjected to a lot of force, is easy to break after long-term use, reduces the service life, and has low practicality, the present application provides an external toothed magnetic induction encoder and an electronic device.

[0005] In order to solve the above technical problems, the technical solution adopted in this application is:

[0006] An external-tooth magnetic induction encoder comprises: a housing and a rotor;

[0007] The outer shell has a accommodating cavity, the bottom of the accommodating cavity is provided with a rotor positioning hole for allowing one end of the rotor to pass through to the outside, the other end of the rotor is rotatably arranged in the accommodating cavity, the outer peripheral surface of the rotor is provided with a plurality of outer ring teeth, the outer shell is provided with a slot connected to the accommodating cavity, and the slot is provided with a spring piece that cooperates with the outer ring teeth, so that when the rotor rotates, the spring piece contacts each of the outer ring teeth to generate a gear feedback sense.

[0008] In one embodiment, the cross-sectional shape of the mating portion between the spring piece and the outer ring tooth position is set to be V-shaped, so as to produce a gear feedback feeling by cooperating with the outer ring tooth position.

[0009] In one embodiment, two spring pieces are provided.

[0010] In one embodiment, a buffer portion is provided at one end of the elastic sheet to prevent breakage.

[0011] In one embodiment, a limiting groove is provided at the bottom of the slot, and a limiting member for cooperating with the limiting groove for locking is provided on the spring sheet.

[0012] In one embodiment, the limiting member is configured as a barb.

[0013] In one embodiment, the card slot includes a placement area and a card placement area, and the cross-sectional shape of the card placement area is set to a sideways trapezoid.

[0014] In one embodiment, it also includes a magnet, a magnetic angle sensor, a PCB board and a terminal, the magnet is mounted on the rotor, the PCB board is mounted on the housing and is spaced apart from the rotor and the magnet, the magnetic angle sensor is connected to the PCB board, and the terminal is connected to the PCB board.

[0015] In one embodiment, the magnet is arranged in a ring shape, a magnetic slot is provided on the rotor, and the magnet is installed in the magnetic slot.

[0016] An electronic device comprises the external-tooth magnetic induction encoder described in any one of the above embodiments.

[0017] Compared with the prior art, the beneficial effects are as follows: an external device drives the rotor to rotate in the accommodating cavity, and the rotor is spaced apart from the side wall of the rotor positioning hole, one end of the spring is clamped in the outer shell, and one side of the spring contacts the rotating rotor, so that it can act on the rotating outer ring teeth and generate a gear feedback. In this way, when installing, it is only necessary to install the spring in the slot, and the installation is relatively simple. When in use, the spring is only affected by the side wall of the slot and the outer ring teeth, and the amount of force it receives is small, reducing the possibility of wear and fracture, thereby effectively extending its service life. While ensuring that the gear feedback is generated when the rotor rotates, its coordination installation is simpler, the service life is longer, and the practicality is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of an external-tooth magnetic induction encoder according to an embodiment of the present application;

[0019] Figure 2 is a schematic cross-sectional structural diagram of an external-tooth magnetic induction encoder according to an embodiment of the present application;

[0020] Figure 3 is a partial exploded structural schematic diagram of an external-tooth magnetic induction encoder according to an embodiment of the present application;

[0021] Figure 4is a partial structural schematic diagram of an external-tooth magnetic induction encoder according to an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of the exploded structure of an external-tooth magnetic induction encoder according to an embodiment of the present application;

[0023] Figure 6 It is a schematic diagram of the exploded structure of the external-tooth magnetic induction encoder of an embodiment of the present application.

[0024] 10. External gear magnetic induction encoder; 100. Housing; 110. Accommodating cavity; 111. Rotor positioning hole; 112. Accommodating groove; 120. Anti-slip member; 130. Connecting member; 140. Card slot; 141. Placement area; 142. Card placement area; 200. Rotor; 210. Assembly rod; 211. Driving end; 212. Connecting end; 213. Matching groove; 220. Main body; 221. Magnetic groove; 222. Outer ring tooth position; 223. Anti-skid rib; 224. Outer groove; 300. Magnet; 400. PCB board; 500. Terminal; 600. Magnetic angle sensor; 700. Shrapnel; 710. Buffer; 720. Limiting member. DETAILED DESCRIPTION

[0025] The technical solution of the present application is further described in detail below through specific embodiments and in combination with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0026] Example 1

[0027] like Figures 1 to 6 As shown, in this embodiment, an external-tooth magnetic induction encoder 10 includes: a housing 100 and a rotor 200; the housing 100 has a housing chamber 110, the bottom of the housing chamber 110 is provided with a rotor positioning hole 111 for allowing one end of the rotor 200 to pass through to the outside, the other end of the rotor 200 is rotatably arranged in the housing chamber 110, and the outer peripheral surface of the rotor 200 is provided with a plurality of outer ring teeth 222, and the housing 100 is provided with a slot 140 connected to the housing chamber 110, and a spring piece 700 matched with the outer ring teeth 222 is installed in the slot 140, so that when the rotor 200 rotates, the spring piece 700 contacts each outer ring tooth position 222 to generate a gear feedback sense.

[0028] Specifically, the left side of the shell 100 has a accommodating cavity 110, the rotor 200 includes an assembly rod 210 and a main body 220, the assembly rod 210 includes a driving end 211 and a connecting end 212, the shape of the rotor positioning hole 111 is adapted to the shape of the driving end 211, and the driving end 211 is positioned and installed through the rotor positioning hole 111, the cross-sectional shape of the main body 220 is set to be annular, the main body 220 is sleeved and fixed on the connecting end 212, the shape of the accommodating cavity 110 is adapted to the shape of the main body 220, and the main body 220 is rotatably arranged in the accommodating cavity 110, and the outer peripheral surface of the main body 220 is protruding outward and provided with a plurality of outer ring teeth 222. A slot 140 is formed on the side wall of the accommodating cavity 110 and faces outward. The spring piece 700 is fixedly snapped into the slot 140 . The shape of the slot 140 matches that of the spring piece 700 to fix the spring piece 700 in the housing 100 , and the inward side of the spring piece 700 contacts each outer ring tooth position 222 in sequence.

[0029] It is worth noting that the external device drives the rotor 200 to rotate in the accommodating chamber 110, and the rotor 200 is positioned and installed through the rotor positioning hole 111. One end of the spring 700 is clamped in the housing 100, and one side of the spring 700 is in contact with the rotating rotor 200, so that it can act on the rotating outer ring tooth position 222 and generate a gear feedback sense. In this way, when installing, it is only necessary to install the spring 700 in the slot 140 for installation. Its installation is relatively simple, and when in use, the spring 700 is only affected by the side wall of the slot 140 and the outer ring tooth position 222. The amount of force it receives is small, reducing the possibility of wear and fracture, thereby effectively extending its service life. While ensuring that the gear feedback sense is generated when the rotor 200 rotates, its coordination installation is simpler, the service life is longer, and the practicality is higher.

[0030] In order to facilitate the use of the spring piece 700, as Figure 3 As shown, in one embodiment, the cross-sectional shape of the mating portion of the spring piece 700 and the outer ring tooth position 222 is set to be V-shaped, so as to cooperate with the outer ring tooth position 222 to generate a gear feedback feeling.

[0031] Specifically, the spring piece 700 is fixedly connected to the slot 140, and the spring piece 700 is arranged on one side of the rotor 200. The end of the spring piece 700 close to the rotor 200 is set in a V shape, and the conical bottom of the spring piece 700 is arranged close to the rotor 200. The conical bottom of the spring piece 700 contacts with each outer ring tooth position 222 to cooperate with each outer ring tooth position 222, thereby generating a gear feedback sense.

[0032] In order to facilitate the use of the spring piece 700, as Figure 3 and Figure 4 As shown, in one embodiment, two spring pieces 700 are provided.

[0033] Specifically, two spring sheets 700 are respectively arranged on the front and rear sides of the rotor 200, so that the gear feedback feeling is fully guaranteed.

[0034] In order to prevent the spring piece 700 from breaking, Figures 3 to 5 As shown, in one embodiment, a buffer portion 710 for preventing breakage is provided at one end of the spring piece 700 .

[0035] Specifically, a buffer portion 710 is provided at one end of the spring piece 700 away from the assembly rod 210. The buffer portion 710 is configured as a round convex rib. By connecting two round convex ribs to the bottom end of the spring piece 700, a certain buffering effect can be generated, thereby effectively preventing the spring piece 700 from being easily broken and preventing the bottom end of the spring piece 700 from being easily separated from the slot 140.

[0036] In order to facilitate the fastening and installation of the spring piece 700 in the slot 140, as shown in FIG. Figures 3 to 5 As shown, in one embodiment, a limiting groove is provided at the bottom of the slot 140 , and a limiting member 720 for cooperating with the limiting groove for locking is provided on the spring sheet 700 .

[0037] Specifically, the shape of the limiting groove is adapted to the shape of the limiting member 720. A limiting groove is provided on the side wall of the slot 140 close to the rotor positioning hole 111, and the limiting groove is arranged at the bottom. The limiting member 720 is engaged with the limiting groove, which effectively prevents the spring piece 700 from easily detaching from the slot 140 during operation.

[0038] In order to facilitate the use of the limiter 720, as shown in FIG. Figure 4 and Figure 5 As shown, in one embodiment, the limiting member 720 is configured as a barb.

[0039] Specifically, the barb can fully engage with the limiting groove, thereby effectively preventing the spring piece 700 from easily escaping from the engaging groove 140 during operation.

[0040] In order to facilitate the limiting of the spring piece 700, as Figure 3 As shown, in one embodiment, the card slot 140 includes a placement area 141 and a card placement area 142 , and the cross-sectional shape of the card placement area 142 is set to be a sideways trapezoid.

[0041] Specifically, the shape of the placement area 141 corresponds to the shape of the spring piece 700 , the clamping area 142 is arranged close to the rotor 200 , and the cross-sectional shape of the clamping area 142 is arranged as a side-mounted trapezoid, so that the assembly of the spring piece 700 is facilitated.

[0042] In order to facilitate the installation of the rotor 200 in the housing 100 and prevent it from being separated from the housing 100 during rotation, Figure 3 and Figure 6As shown, in one embodiment, an anti-dropping member 120 for preventing the rotor 200 from falling off is disposed in the housing 100 , and the anti-dropping member 120 is engaged with the rotor 200 .

[0043] Specifically, refer to Figure 6 The main body 220 is provided with an outer groove 224 on one side away from the rotor positioning hole 111, so that a step is formed on the outer periphery of the main body 220, and the anti-dropping member 120 is installed at one end of the accommodating cavity 110 away from the rotor positioning hole 111, and the step is engaged with the anti-dropping member 120, so as to prevent the rotor 200 from falling off. The anti-dropping member 120 can be provided with at least two undercuts, for example, four undercuts.

[0044] In order to facilitate the installation of the rotor 200, Figure 6 As shown, in one embodiment, a chamfer is provided on the undercut.

[0045] Specifically, the end of the anti-slip member 120 away from the rotor positioning hole 111 is provided with a chamfer. In this way, by providing a chamfer at the left end of the undercut, it is possible to ensure that the rotor 200 rotates smoothly to avoid jamming.

[0046] In order to facilitate the use of the external gear type magnetic induction encoder 10, as shown in FIG. Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, the external-tooth magnetic induction encoder 10 also includes a magnet 300, a magnetic angle sensor 600, a PCB board 400 and a terminal 500. The magnet 300 is mounted on the rotor 200, the PCB board 400 is mounted on the housing 100 and is spaced apart from the rotor 200 and the magnet 300. The magnetic angle sensor 600 is connected to the PCB board 400, and the terminal 500 is connected to the PCB board 400.

[0047] Specifically, the side wall of the accommodating cavity 110 is provided with an accommodating groove 112, and the shape of the accommodating groove 112 is adapted to the shape of the PCB board 400. The PCB board 400 is connected to the side wall of the accommodating groove 112, so that the PCB board 400 can be installed in the housing 100, and then the housing 100 can protect the PCB board 400. The magnet 300 is fixed on the main body 220. Four terminals 500 are provided, and the four terminals 500 are embedded and welded on the PCB. The terminal 500 is electrically connected to the PCB board 400, and the four terminals 500 are embedded and clamped on the housing 100. The magnetic angle sensor 600 is welded on the PCB board 400, the magnetic angle sensor 600 is electrically connected to the PCB board 400, and the magnetic angle sensor 600 is arranged in correspondence with the magnet 300. When the external force drives the rotor 200 to rotate, the rotor 200 rotates in the accommodating cavity 110, and the magnet 300 installed on the rotor 200 rotates accordingly. At this time, the magnetic angle sensor 600 installed on the PCB board 400 can sense the rotation of the magnet 300, that is, the magnetic angle sensor 600 can use the angular phase change of the magnet 300 to excite the internal magnetic sensor, thereby realizing the acquisition and translation of information. Afterwards, the magnetic angle sensor 600 converts the detected magnetic field strain into an mV-level application electrical signal, and outputs it to the application end through the terminal 500 on the PCB board 400.

[0048] In order to facilitate the installation and use of the magnet 300, Figure 6 As shown, in one embodiment, the magnet 300 is arranged in a ring shape, a magnetic slot 221 is opened on the rotor 200 , and the magnet 300 is installed in the magnetic slot 221 .

[0049] Specifically, the shape of the magnet 300 is set to be ring-shaped, the shape of the magnetic groove 221 is set correspondingly thereto, and the central axis of the magnet 300 is set to coincide with the central line of the magnetic angle sensor 600 , so that the magnetic angle sensor 600 can sense the magnet 300 easily.

[0050] In order to prevent the magnet 300 from being separated from the magnetic slot 221, as Figure 6 As shown, in one embodiment, a locking member for positioning the locking magnet 300 is disposed in the magnetic slot 221 .

[0051] Specifically, the locking member is provided as an anti-skid rib 223. By providing the anti-skid rib 223, after the magnet 300 is installed in the magnetic slot 221, the friction force on the magnet 300 can be increased, thereby effectively preventing the magnet 300 from easily escaping from the magnetic slot 221. Among them, the anti-skid rib 223 can be provided as four to ensure that the magnet 300 is tightly installed in the rotor 200.

[0052] In order to facilitate the assembly of the magnet 300, as Figure 6As shown, in one embodiment, one end of the anti-slip rib 223 away from the rotor positioning hole 111 is provided with a chamfer.

[0053] Specifically, by chamfering the left end of the anti-slip rib 223 , it is convenient for the magnet 300 to be pressed into the rotor 200 .

[0054] In order to facilitate the installation of the magnet 300, Figure 6 As shown, in one embodiment, a chamfer is provided on the side wall of the magnetic slot 221 close to the connection end 212 .

[0055] Specifically, by rounding the inner side of the magnetic groove 221 , it is easier for the magnet 300 to be assembled into the magnetic groove 221 .

[0056] Example 2

[0057] This embodiment is a further preferred embodiment of embodiment 1. Figure 2 As shown, in one embodiment, a mating groove 213 is opened inside the assembly rod 210, and the cross-sectional shape of the mating groove 213 is set to be a hexagon, and the diameter of the mating groove 213 near the connecting end 212 is smaller than the diameter of the mating groove 213 near the driving end 211.

[0058] Specifically, this structure can ensure that the external drive rod is easy to assemble while ensuring that the external drive rod and the assembly rod 210 have high matching accuracy.

[0059] In order to facilitate the installation of the external gear type magnetic induction encoder 10 on the external assembly, such as Figure 1 and Figure 3 As shown, in one embodiment, the housing 100 is provided with a connector 130 for tightly fitting with an external assembly.

[0060] Specifically, by providing a connector 130 at the bottom end of the housing, it is convenient to connect the external gear type magnetic induction encoder 10 to the external assembly. For example, the connector 130 can be set as two symmetrically arranged protrusions, and the external assembly is an assembly plate, and a small hole matching the protrusion is opened on the assembly plate, and the protrusion is engaged and clamped in the small hole, so that it is convenient to install the external gear type magnetic induction encoder 10 on the external assembly.

[0061] Example 3

[0062] An electronic device is provided, comprising the external-tooth magnetic induction encoder 10 of any one of Embodiments 1 or 2.

[0063] Specifically, the specific configuration of the electronic device is subject to actual production conditions, and it may be an electronic device such as a mouse or an electronic watch that can apply an external gear magnetic induction encoder. It is known to those skilled in the art and is achievable, and is not described in detail in this embodiment.

[0064] The drawings are only for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent. In addition, it should also be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device are only for illustrative purposes and should not constitute any limitation on this application.

[0065] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The same or similar reference numerals in the drawings of the embodiments of this application correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short" and the like indicating the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the position relationship in the drawings are only used for exemplary description and cannot be understood as a limitation of this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0066] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but within the error tolerance range. "Parallel" is not strictly parallel, but within the error tolerance range. In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the embodiments of the present application, the orientation or position relationship indicated by the technical terms "thickness", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0067] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application should be included in the protection scope of the claims of the present application.

Claims

1. An external gear type magnetic induction encoder, characterized in that: include: A housing (100) and a rotor (200); The housing (100) has a housing cavity (110) therein, a rotor positioning hole (111) is provided at the bottom of the housing cavity (110) for allowing one end of the rotor (200) to pass through to the outside, the other end of the rotor (200) is rotatably arranged in the housing cavity (110), a plurality of outer ring teeth (222) are arranged on the outer peripheral surface of the rotor (200), a slot (140) connected to the housing cavity (110) is provided in the housing (100), and a spring piece (700) cooperating with the outer ring teeth (222) is installed in the slot (140), so that when the rotor (200) rotates, the spring piece (700) contacts each of the outer ring teeth (222) to generate a gear feedback sense.

2. The external-tooth magnetic induction encoder according to claim 1, characterized in that: The cross-sectional shape of the portion where the spring piece (700) cooperates with the outer ring tooth position (222) is set to be V-shaped, so as to cooperate with the outer ring tooth position (222) to produce a gear feedback feeling.

3. The external-tooth magnetic induction encoder according to claim 1, characterized in that: The number of the spring pieces (700) is two.

4. The external-tooth magnetic induction encoder according to claim 1, characterized in that: One end of the spring sheet (700) is provided with a buffer portion (710) for preventing breakage.

5. The external-tooth magnetic induction encoder according to claim 1, characterized in that: A limiting groove is provided at the bottom of the locking slot (140), and a limiting member (720) is provided on the spring sheet (700) for cooperating with the limiting groove for locking.

6. The external-tooth magnetic induction encoder according to claim 5, characterized in that: The limiting member (720) is configured as a barb.

7. The external-tooth magnetic induction encoder according to claim 1, characterized in that: The card slot (140) comprises a placement area (141) and a card placement area (142), and the cross-sectional shape of the card placement area (142) is set to be a sideways trapezoid.

8. The external-tooth magnetic induction encoder according to claim 1, characterized in that: The invention also comprises a magnet (300), a magnetic angle sensor (600), a PCB board (400) and a terminal (500), wherein the magnet (300) is mounted on the rotor (200), the PCB board (400) is mounted on the housing (100) and is spaced apart from the rotor (200) and the magnet (300), the magnetic angle sensor (600) is connected to the PCB board (400), and the terminal (500) is connected to the PCB board (400).

9. The external-tooth magnetic induction encoder according to claim 8, characterized in that: The magnet (300) is arranged in a ring shape, a magnetic groove (221) is provided on the rotor (200), and the magnet (300) is installed in the magnetic groove (221).

10. An electronic device, characterized in that: It comprises the external-toothed magnetic induction encoder (10) as described in any one of claims 1 to 9.

Images