coil dermograph with simplified assembly and maintenance

Abstract

The invention presents a dermograph using two electrically isolated conductive chassis, unlike traditional single-chassis machines. The rear chassis (30) is connected to the negative terminal of the power supply, while the front chassis (20) is connected to the positive terminal via a centralized electrical circuit comprising electromagnetic coils (14), a capacitor (15), and a power connector (11). This circuit is housed in a central insulated casing (10) that provides both the structural connection and the electrical connection between the chassis. This configuration reduces the number of spare parts, eliminates insulating wires and washers, and makes the dermograph easier to assemble, disassemble, and clean, thus facilitating sterilization. Figure for abstract: [Fig 2]

Description

Title of the invention: Dermograph with coils for simplified assembly and maintenance. Technical field of the invention

[0001] The present innovation relates to the technical field of tattooing. More specifically, it relates to an improvement of coil dermographs using the principle of electromagnetism, aimed at simplifying their disassembly, maintenance, and disinfection. Prior art

[0002] The sanitary safety of dermographs depends on their ability to be easily cleaned and sterilized, whether in whole or in part. The components must be easy to disassemble and reassemble to avoid wasting the user's time during this maintenance. They must also be able to be reassembled precisely to avoid tedious adjustments.

[0003] Traditional coil dermographs, used for tattooing, generally consist of several electrical components connected to each other by wires. These wires ensure the transmission of electrical current between the coils and the various components of the machine, thus enabling its proper operation.

[0004] The chassis of the dermograph ensures the mechanical fixing of the various components and allows the electrical supply of the negative pole to the front leaf spring which acts as a contactor with the adjustable contact screw.

[0005] This contact screw is connected to the positive terminal of the power supply via the coils. It must therefore be electrically isolated from the machine chassis, which is itself connected to the negative terminal, to prevent a short circuit. This is achieved using insulated wires and insulating plastic washers.

[0006] However, the presence of these wires complicates the assembly, disassembly, maintenance, and disinfection of the machine. Furthermore, during these operations, the wires can break or become disconnected, leading to recurring malfunctions.

[0007] Plastic insulating washers are also a regular source of adjustment problems. Indeed, to ensure a lasting adjustment on a dermograph subjected to vibrations, it is necessary to tighten the fixing screws of the front and rear spacers very tightly, which has the effect of crushing the insulating washers, eventually causing mechanical play and risks of poor contact.

[0008] For the manufacture of traditional dermographs, plastic coatings such as heat-shrink tubing commonly used to protect coils and wire connection terminals are sometimes porous and the protrusions they create are conducive to the accumulation of contaminating residues. Description of the invention

[0009] The invention aims to overcome the aforementioned drawbacks by using two conductive chassis, electrically isolated from each other, unlike traditional dermographs composed of a single chassis. The rear chassis (30) will be electrically connected to the negative terminal of the power supply, and the front chassis (20) will be electrically connected to the positive terminal via the internal electrical circuit (16), detailed below.

[0010] The internal electrical circuit (16), consisting of the electromagnetic coils (14), the capacitor (15), the power connector (11), and the wires connecting these components, will be grouped within a central housing (10). The structural connection between the front chassis (20) and the rear chassis (30), provided by the central housing (10), can also serve as an electrical connection between the chassis (20, 30) and the poles of the internal electrical circuit (16).

[0011] Consequently, the insulated wires, their connection terminals, and the previously required insulating washers will no longer be necessary. The front chassis (20) will replace this assembly, thus ensuring reliable operation while simplifying the assembly of the dermograph.

[0012] The elimination of connecting wires, washers and the grouping of electrical circuit components in the central housing (10) will greatly reduce the number of spare parts which will simplify the disassembly and assembly of the dermograph and decrease the risk of breakdowns and damage.

[0013] With fewer spare parts, fewer protrusions, and the elimination of porous materials, the machine will be easier to maintain and clean. Hard-to-reach areas will be minimized, facilitating disinfection and sterilization protocols. Brief description of the drawings

[0014] The invention described above, as well as its functionalities, advantages, and embodiments, may be described below with reference to the following drawings:

[0015] [Fig.1] is an isometric view of the assembled electromagnetic coil dermograph.

[0016] [Fig.2] is an exploded isometric view of the coil dermograph electromagnetic, representing the disassembled dermograph.

[0017] [Fig.3] is a representation of the electrical circuit in diagram form represented in a closed circuit.

[0018] [Fig.4] is a representation of the electrical circuit in diagram form represented in a closed circuit, in another embodiment of the invention. List of reference signs

[0019] • 10 central housing • 11 power connector • 12 front mounting screw threads • 13 rear mounting screw threads • 14 electromagnetic coils • 15 capacitor • 16 internal electrical circuit • 17 external electrical circuit • 20 front frame • 21 front frame mounting screws • 22 needle tube clamping screws • 23 front spacer • 24 adjustable contact screw • 25 adjustable contact screw locking screw • 30 rear frame • 31 rear frame mounting screws • 32 rear leaf spring • 33 weight • 34 front leaf spring Detailed description of the invention

[0020] Represented in the diagram in Figure [Fig. 3], the central housing (10) will contain the electronic components of the dermograph; it may consist of the electromagnetic coils (14), the capacitor (15), and the power connector (11). These various components will be assembled in a compact manner to minimize the size and weight of the dermograph.

[0021] In the main embodiment of the invention, the central housing (10) may also contain a printed circuit board intended to simplify the routing between the different components of the internal electrical circuit (16).

[0022] In the main embodiment of the invention, the central housing (10) may also contain materials having ferromagnetic properties whose purpose is to improve the conduction of the magnetic flux between the cores of the electromagnetic coils (14), resulting in a decrease in electrical consumption inducing a reduction in energy dissipation in the form of heat and ensuring greater stability of the electronic and magnetic properties.

[0023] In the main embodiment of the invention, the chassis fixing screw threads (12, 13), having high electrical conductivity properties, will also act as connectors via the chassis fixing screws (31, 21). These screw threads (12, 13) are connected to the internal electronic components (14, 15, 11) of the central housing (10) and each will constitute a connection point with the external components (17) of the electrical circuit. The structural connection between the front chassis (20), the central housing (10), and the rear chassis (30) will therefore be ensured by this screw-nut system (12-21, 13-31).

[0024] In the principal embodiment of the invention, in order to make the central housing (10) resistant to mechanical stress and to limit vibrations of the electronic components, said components may be encapsulated with an electrically insulating polymer material. This will ensure the structural robustness of the entire dermograph. The materials constituting the external surface of this central housing (10) will provide electrical insulation between the two chassis (20, 30) and will be inert to disinfectants commonly used in the medical or tattooing fields.

[0025] In another embodiment facilitating the manufacture of the dermographs, the central housing (10) may be made with an external shell serving as a mold for the coating process. This shell must meet the same criteria for electrical insulation and inertness to disinfectant products.

[0026] In the principal embodiment of the invention, the front frame (20) shall be made of a material having high electrical conductivity properties in order to ensure the continuity of the internal electrical circuit (16) from the positive terminal (12) of the central housing (10) to the adjustable contact screw (24) via the front spacer (23). The front frame (20) shall be fixed to the front mounting screw thread (12) of the central housing (10) by means of the front frame mounting screw (21). The front frame (20) shall also serve as a support for the needle tube, thanks to the tubular vise and the needle tube clamping screw (22).

[0027] In another embodiment, the needle tube fixing support, requiring good resistance properties to mechanical stresses, can be integrated directly into the central housing (10).

[0028] In the principal embodiment of the invention, the rear frame (30) will also be made of a conductive material enabling the transmission of electric current from the negative terminal (13) of the central housing (10) to the front leaf spring (34) via the rear leaf spring (32) and the weight (33). The rear frame (30) also serves as a mounting support for the rear spring / weight / front spring assembly (32, 33, 34).

[0029] In the main embodiment of the invention, the two chassis (20, 30) will be fitted to the specific geometry of the central housing (10). This fitting will be intended to prevent rotational movements of said chassis and to ensure the mechanical locking of the assembly.

[0030] In another embodiment of the invention, shown in Figure 4, in order to minimize the number of components of the dermograph, the chassis (20, 30) may be fully or partially integrated into the central housing (10). In this case, the roles of electrical connection and mechanical fastening may be separated, and mechanical fastening may be achieved through the encapsulation of the internal components. The chassis (20, 30) will therefore replace the connection poles of the internal circuit (16), which are represented by the conductive screw threads (12, 13) in the main embodiment.

[0031] In another embodiment of the invention, the capacitor (15) may be moved away from the central housing (10) in order to facilitate its replacement in case of failure and thus prevent dermograph obsolescence.

Claims

Demands

1. Electromagnetic coil dermograph, characterized in that it consists of a front chassis (20), a rear chassis (30) and a central housing (10) containing an internal electrical circuit (16) composed of electromagnetic coils (14), a capacitor (15) and the power connector (11), in that the front chassis (20) and the rear chassis (30) both have electrical conductivity properties and are electrically insulated from each other, in that the central housing (10) provides the electrical connection between the poles of its internal electrical circuit (16), the front chassis (20) and the rear chassis (30), in that the central housing (10) is made of a material providing electrical insulation between the connection poles of the front chassis (20) and the rear chassis (30).

2. Dermograph according to claim 1, characterized in that the front chassis (20) ensures the continuity of the internal electrical circuit (16) from the positive pole (12) of the central housing (10) to the adjustable contact screw (24) via the front spacer (23), in that the rear chassis (30) ensures the continuity of the internal electrical circuit (16) from the negative pole (13) of the central housing (10) to the front leaf spring (34) via the rear leaf spring (32)

3. Dermograph according to any one of claims 1 to 2, characterized in that the central housing (10) contains a printed circuit facilitating the routing of the electronic components of the internal circuit (16), in that the central housing (10) contains materials with ferromagnetic properties whose purpose is to improve the conduction of magnetic flux between the cores of the electromagnetic coils (14).

4. Dermograph according to any one of claims 1 to 3, characterized in that the electronic components (11, 14, 15) contained in the central housing (10) are coated with an electrically insulating polymer material to limit vibrations and ensure structural robustness to the entire dermograph.

5. A dermograph according to any one of claims 1 to 4, characterized in that the structural connection between the front frame (20), the central housing (10) and the rear frame (30) is ensured by screw-nut systems (12, 21) (13, 31), in that the pitches of chassis fixing screws (12, 13) have high electrical conductivity properties and act as connectors via the chassis fixing screws (31, 21), in that the chassis fixing screw threads (12, 13) are connected to the internal electronic components (14, 15, 11) of the central housing (10) and each constitutes a connection pole with the external components (17)

6. Dermograph according to claim 1 to 5, characterized in that the two chassis (20, 30) are adjusted to the specific geometry of the central housing (10) which is intended to prevent rotational movements of said chassis and to guarantee the locking of the assembly.

7. Dermograph according to any one of claims 1 to 5, characterized in that the front chassis (20) and rear chassis (30) are fully or partially integrated into the central housing (10), in that they are connected to the internal electrical circuit (16) and respectively constitute the connection poles with the external elements (17).

8. Dermograph according to any one of claims 1 to 6, characterized in that a needle tube fixing support is integrated into the central housing (10).

9. Dermograph according to any one of claims 1 to 6, characterized in that a needle tube fixing support is integrated into the front frame (20).

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