Magnetic head of currency count machine

Abstract

The utility model relates to the technical field of currency counters, in particular to a currency counter magnetic head, which comprises a shell, a framework, an elastic sheet, a middle plate and two magnetic head chips, the framework, the elastic sheet, the middle plate and the two magnetic head chips are arranged in the shell, one side of the framework is provided with a crack, one end of the middle plate is arranged in the crack, and the other end of the middle plate is positioned on the outer side of the framework; the elastic piece comprises a bottom piece, a left clamping piece and a right clamping piece, the left clamping piece and the right clamping piece are connected to two opposite side edges of the bottom piece respectively and extend towards the same side, the bottom piece is arranged on one side, back to the middle plate, of the framework, and the left clamping piece and the right clamping piece are located on one sides of clamping parts of the two magnetic head chips respectively and used for clamping the two magnetic head chips; a magnetic opening is formed in one side of the shell, and the magnetic head portion of the magnetic head chip and the middle plate extend out of the shell through the magnetic opening. According to the invention, the structure of an aluminum core frame is eliminated, and the elastic sheet is adopted to replace the aluminum core frame to clamp the two magnetic head chips, so that rivets and screws are not needed for fixation, raw materials are saved, the labor cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of currency counters, in particular to a magnetic head of a currency counter. Background Art

[0002] A currency counter is an electromechanical integrated device for automatically counting the number of banknotes. Generally, it has the function of counterfeiting detection and is a machine that combines counting and counterfeiting detection of banknotes. The magnetic detection of the currency counter is completed by a magnetic head. By detecting the magnetism of the currency, the authenticity can be judged, which is the same as the detection principle of the security thread. Currently, there are single magnetic heads, double magnetic heads, triple magnetic heads, and quadruple magnetic heads.

[0003] The existing magnetic head structure usually fixes the chip on the aluminum core frame with rivets, and then the aluminum core frame is fixed with screws and installed in the housing. For example, a magnetic head assembly for a foreign currency detector is disclosed in a Chinese patent with the publication number CN203490760U. The magnetic head includes a housing and an iron core seat arranged inside the housing. The housing is provided with an opening along the length direction. Two relatively arranged and U-shaped iron cores are fixed inside the iron core seat. The working ends formed by the two iron cores are located inside the opening. A middle magnetic plate is arranged between the two iron cores, and spacer sheets are respectively clamped between the middle magnetic plate and the two iron cores. Wire frames are respectively sleeved on the two iron cores, coils are wound on the wire frames, and the two ends of the coils are respectively connected to a circuit board through terminal posts. The bottom of the housing is covered with a shielding cover. The length of the working ends formed by the two iron cores is 29.3 mm, the thickness of the middle magnetic plate is 0.32 mm, the length of the housing is 32 mm, and the number of turns of the coil is 1600. Regarding the internal structure of the magnetic head, two relatively arranged iron cores 3 are clamped inside the iron core seat 2, and the iron core seat 2 and the two iron cores 3 are fixedly connected by screws 11. In existing products, the iron core and the iron core seat are usually laser welded, and the welding surface is small, so the reliability of their connection relationship is poor. In this embodiment, the fixed connection is realized by screws 11, making the connection relationship between the iron core 3 and the iron core seat 2 more stable.

[0004] The connection method using rivets or screws has a complex process and low production efficiency. Therefore, it is necessary to improve the structure of the magnetic head. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the utility model provides a magnetic head of a currency counter, which uses elastic pieces to fix the skeleton and the magnetic head chip instead of the aluminum core frame, simplifies the process, saves raw materials, reduces labor costs, and improves production efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] A magnetic head of a currency counter includes a housing, and a skeleton, elastic pieces, a middle plate and two magnetic head chips arranged inside the housing. A slit is opened on one side of the skeleton. One end of the middle plate is arranged in the slit, and the other end is located outside the skeleton;

[0008] Both magnetic head chips include magnetic head parts and clamping parts. The clamping parts are connected to one side edge of the magnetic head parts. The clamping parts of the two magnetic head chips are respectively arranged on both sides of the framework, and the magnetic head parts of the two magnetic head chips are respectively arranged on both sides of the middle plate, and cooperate to clamp the middle plate to form a magnetic head;

[0009] The elastic sheet includes a bottom sheet, a left clamping sheet and a right clamping sheet. The left clamping sheet and the right clamping sheet are respectively connected to two opposite side edges of the bottom sheet and extend towards the same side. The bottom sheet is arranged on one side of the framework facing away from the middle plate, and the left clamping sheet and the right clamping sheet are respectively located on one side of the clamping parts of the two magnetic head chips for clamping the two magnetic head chips;

[0010] One side of the outer shell is provided with a magnetic port, and the magnetic head part of the magnetic head chip and the middle plate extend out of the outer shell through the magnetic port.

[0011] In summary, the above technical solution has the following beneficial effects: In the existing design, the two magnetic head chips are fixed on two aluminum core frames through a riveting process. After the two magnetic head chips clamp the framework, the two aluminum core frames are fixed by screws to form a magnetic head. However, in this application, the structure of the aluminum core frame is cancelled, and an elastic sheet is used to replace the aluminum core frame to clamp the two magnetic head chips. The elastic sheet is made of a metal material with post-elasticity. The left clamping sheet and the right clamping sheet are located on both sides of the bottom sheet and extend towards the same side to form a U-shaped clamping structure in cross-section. After the magnetic head chip and the framework are placed into the U-shaped elastic sheet, they can be clamped by the left clamping sheet and the right clamping sheet of the elastic sheet, so that fixing by rivets and screws is not required. Finally, the reinforcement processes such as potting use the existing technical methods. The process is simplified through the structure of the elastic sheet, raw materials are saved, labor costs are reduced, and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a longitudinal sectional view of the outer shell of a magnetic head of a banknote counting machine;

[0013] Figure 2 It is a cross-sectional view of the outer shell of a magnetic head of a banknote counting machine;

[0014] Figure 3 It is a longitudinal sectional view of the framework of a magnetic head of a banknote counting machine;

[0015] Figure 4 It is a sectional view of the framework of a magnetic head of a banknote counting machine;

[0016] Figure 5 It is a longitudinal sectional view of a magnetic head chip of a banknote counting machine;

[0017] Figure 6 It is a three-dimensional view of a magnetic head chip of a banknote counting machine;

[0018] Figure 7Schematic longitudinal sectional view of a shrapnel of a banknote counter magnetic head;

[0019] Figure 8 Schematic view of a filling piece of a banknote counter magnetic head;

[0020] Figure 9 Schematic view of a negative film of a banknote counter magnetic head.

[0021] Reference numerals: 10, housing; 11, shell sleeve; 111, magnetic port; 112, mounting port; 12, bottom shell; 20, skeleton; 21, frame body; 211, slit; 22, pin; 30, shrapnel; 31, negative film; 311, foot port; 32, left clamping piece; 33, right clamping piece; 34, filling piece; 40, middle plate; 50, magnetic head chip; 51, magnetic head part; 52, clamping part; 53, bottom support part; 531, through port; 60, spacer piece. Detailed implementation manners

[0022] The following further describes the present utility model in detail with reference to the drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component, respectively.

[0023] Such as Figure 1 And Figure 2As shown in the figure, a banknote counter magnetic head includes a housing 10, and a skeleton 20, a shrapnel 30, a middle plate 40 and two magnetic head chips 50 arranged inside the housing 10. A slit 211 is formed on one side of the skeleton 20. One end of the middle plate 40 is arranged in the slit 211, and the other end is located outside the skeleton 20. Each of the two magnetic head chips 50 includes a magnetic head part 51 and a clamping part 52. The clamping part 52 is connected to one side edge of the magnetic head part 51. The clamping parts 52 of the two magnetic head chips 50 are respectively arranged on both sides of the skeleton 20, and the magnetic head parts 51 of the two magnetic head chips 50 are respectively arranged on both sides of the middle plate 40 and cooperate to clamp the middle plate 40 to form a magnetic head. The shrapnel 30 includes a bottom plate 31, a left clamping piece 32 and a right clamping piece 33. The left clamping piece 32 and the right clamping piece 33 are respectively connected to two opposite side edges of the bottom plate 31 and extend towards the same side. The bottom plate 31 is arranged on the side of the skeleton 20 facing away from the middle plate 40. The left clamping piece 32 and the right clamping piece 33 are respectively located on one side of the clamping parts 52 of the two magnetic head chips 50 and are used to clamp the two magnetic head chips 50. A magnetic port 111 is formed on one side of the housing 10. The magnetic head part 51 of the magnetic head chip 50 and the middle plate 40 extend to the outside of the housing 10 through the magnetic port 111. In the existing design, the two magnetic head chips 50 are fixed on two aluminum core frames through a riveting process. After the two magnetic head chips 50 clamp the skeleton 20, the two aluminum core frames are fixed by screws to form a magnetic head. However, in this application, the structure of the aluminum core frame is cancelled, and the shrapnel 30 is used to replace the aluminum core frame to clamp the two magnetic head chips 50. The shrapnel 30 is made of a metal material with post-elasticity. The left clamping piece 32 and the right clamping piece 33 are located on both sides of the bottom plate 31 and extend towards the same side to form a U-shaped clamping structure in cross section. After the magnetic head chip 50 and the skeleton 20 are placed into the U-shaped shrapnel 30, they can be clamped by the left clamping piece 32 and the right clamping piece 33 of the shrapnel 30, so that no rivets and screws are needed for fixation. Finally, the reinforcement processes such as potting use the existing technical methods. The structure of the shrapnel 30 simplifies the process, saves raw materials, reduces labor costs and improves production efficiency.

[0024] As Figures 3 - 9 shown, the skeleton 20 includes a frame body 21, a coil and pins 22. The slit 211 is located on one side of the frame body 21. The coil is wound around the frame body 21. The pins 22 are connected to the side of the frame body 21 facing away from the slit 211 and are connected to the coil. A pin hole 311 for the pins 22 to pass through is formed on the bottom plate 31.

[0025] As Figures 7 - 9As shown in the figure, a plurality of left clamping pieces 32 are provided on one side of the bottom plate 31, and a plurality of right clamping pieces 33 are provided on the other side of the bottom plate 31. The skeleton 20 is in a long strip shape, and the bottom plate 31 is rectangular and located on the side of the skeleton 20 with the pins 22. A pin opening 311 is provided on the bottom plate 31. The opening of the pin opening 311 can not only allow the pins 22 to pass through, but also play a role in positioning the skeleton 20. The left clamping pieces 32 and the right clamping pieces 33 are connected to the longer two side edges of the bottom plate 31. The left clamping pieces 32 and the right clamping pieces 33 can extend along the side edges of the bottom plate 31 to form one, or can form a plurality on the side edges of the bottom plate 31. Preferably, a plurality of left clamping pieces 32 and right clamping pieces 33 are symmetrically arranged. In the attached drawing, both the left clamping pieces 32 and the right clamping pieces 33 are three.

[0026] Filling pieces are provided on both side edges where the bottom plate 31 is connected to the left clamping pieces 32 and the right clamping pieces 33. The filling pieces on both sides extend away from the bottom plate 31 to increase the width of the bottom plate 31, so that the width of the elastic piece 30 matches the width of the inner wall of the outer shell 10. After the elastic piece 30 is arranged in the outer shell 10, in order to prevent the elastic piece 30 from shaking, filling pieces are arranged on the elastic piece 30, so that the filling pieces abut against the inside of the outer shell 10 to prevent the elastic piece 30 and the magnetic head from shaking. Specifically, four filling pieces are provided, which are respectively located at the four corners of the bottom plate 31.

[0027] As Figure 5 and Figure 6 shown in the figure, a bottom support portion 53 extends from the side of the clamping portion 52 of the magnetic head chip 50 away from the clamping portion 52. The bottom support portion 53 is located below the skeleton 20, and a through hole 531 for the pins 22 to pass through is provided in the bottom support portion 53. The clamping portions 52 of the two magnetic head chips 50 are located on both sides of the skeleton 20 to clamp the skeleton 20, and the two bottom support portions 53 extend to the lower part of the skeleton 20 to support the skeleton 20, so as to better wrap the skeleton 20.

[0028] There are also two spacer pieces 60. The shapes of the two spacer pieces 60 are the same as that of the middle plate 40. They are respectively arranged on both sides of the middle plate 40. The two spacer pieces 60 and the middle plate 40 are jointly arranged in the clamping groove 211 of the skeleton 20. The spacer pieces 60 are copper sheets. Being located on both sides of the middle plate 40 and jointly inserted into the clamping groove 211 with the middle plate 40 can make the middle plate 40 inserted more tightly.

[0029] The outer shell 10 includes a shell sleeve 11 and a bottom shell 12. An installation opening 112 is provided at the bottom of the shell sleeve 11 for installing the skeleton 20, the elastic piece 30, the middle plate 40 and the two magnetic head chips 50 into the shell sleeve 11. A magnetic opening 111 is provided on the side of the shell sleeve 11 facing away from the installation opening 112. The bottom shell 12 is arranged on the side of the installation opening 112 of the shell sleeve 11 for covering the installation opening 112. The shell body is composed of two parts, the shell sleeve 11 and the bottom shell 12. The bottom shell 12 and the shell sleeve 11 are fixed by clamping. Of course, subsequent reinforcement can also be carried out by means of glue, laser or other methods. After the bottom shell 12 is opened, the above components can be installed.

[0030] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A banknote counter magnetic head, characterized in that, It includes a housing (10), as well as a framework (20), a shrapnel (30), a middle plate (40) and two head chips (50) arranged inside the housing (10). A slit (211) is formed on one side of the framework (20). One end of the middle plate (40) is arranged in the slit (211), and the other end is located outside the framework (20). Both of the two head chips (50) include a head portion (51) and a clamping portion (52). The clamping portion (52) is connected to one side edge of the head portion (51). The clamping portions (52) of the two head chips (50) are respectively arranged on both sides of the framework (20). The head portions (51) of the two head chips (50) are respectively arranged on both sides of the middle plate (40) and cooperate to clamp the middle plate (40) to form a head. The shrapnel (30) includes a bottom sheet (31), a left clamping sheet (32) and a right clamping sheet (33). The left clamping sheet (32) and the right clamping sheet (33) are respectively connected to two opposite side edges of the bottom sheet (31) and extend towards the same side. The bottom sheet (31) is arranged on the side of the framework (20) facing away from the middle plate (40). The left clamping sheet (32) and the right clamping sheet (33) are respectively located on one side of the clamping portions (52) of the two head chips (50) and are used to clamp the clamping portions (52) of the two head chips (50). A magnetic port (111) is formed on one side of the housing (10). The head portion (51) of the head chip (50) and the middle plate (40) extend out of the housing (10) through the magnetic port (111).

2. The magnetic head of a currency counter according to claim 1, characterized in that The framework (20) includes a frame body (21), a coil and pins (22). The slit (211) is located on one side of the frame body (21). The coil is wound around the frame body (21). The pins (22) are connected to the side of the frame body (21) facing away from the slit (211) and are connected to the coil. A pin hole (311) for the pins (22) to pass through is formed on the bottom sheet (31).

3. A banknote counter magnetic head according to claim 2, characterized in that, A plurality of left clamping sheets (32) are arranged on one side of the bottom sheet (31), and a plurality of right clamping sheets (33) are arranged on the other side of the bottom sheet (31).

4. The magnetic head of a currency counter according to claim 2, characterized in that, Filler sheets (34) are arranged on both side edges of the bottom sheet (31) where the left clamping sheet (32) and the right clamping sheet (33) are connected. The filler sheets (34) on both sides extend in a direction away from the bottom sheet (31) and are used to increase the width of the bottom sheet (31) so that the width of the shrapnel (30) matches the width of the inner wall of the housing (10).

5. A banknote counting machine magnetic head according to claim 2, characterized in that, A bottom support portion (53) extends out from the side of the clamping portion (52) of the head chip (50) away from the clamping portion (52). The bottom support portion (53) is located below the framework (20). A through hole (531) for the pins (22) to pass through is formed on the bottom support portion (53).

6. A banknote counter magnetic head according to any one of claims 1-5, characterized in that, It further includes two spacer sheets (60). The shapes of the two spacer sheets (60) are the same as that of the middle plate (40). The two spacer sheets (60) are respectively arranged on both sides of the middle plate (40). The two spacer sheets (60) and the middle plate (40) are jointly arranged in the slit (211) of the framework (20).

7. A banknote counter magnetic head according to any one of claims 1-5, characterized in that, The housing (10) includes a housing sleeve (11) and a bottom case (12). An installation opening (112) is formed at the bottom of the housing sleeve (11) for installing a framework (20), a spring piece (30), a middle plate (40) and two magnetic head chips (50) into the housing sleeve (11). A magnetic opening (111) is formed on one side of the housing sleeve (11) facing away from the installation opening (112). The bottom case (12) is disposed on one side of the installation opening (112) of the housing sleeve (11) for covering the installation opening (112).

Images