Self-locking chuck

Abstract

The present invention relates to a self-locking chuck, comprising a base, a slide plate, a metal film and a wire; a slideway is provided between the front and rear ends of the base, the slide plate is movably arranged in the slideway, the metal film is fixed on the upper plane of the slide plate and arranged between two slide bars; one end of the wire passes through a rectangular frame forward and overlaps the upper side of the metal film; the present invention enables the electrode sheet to be used directly without adding any conductive interface, and establishes a stable and reliable connection with the therapeutic device with the help of the wire to ensure effective and long-lasting use, and improves the safety of use; in addition, the present invention also simplifies the structure and production process of the electrode sheet matched therewith, and reduces the manufacturing cost of the electrode sheet.

Description

Technical Field

[0001] The invention relates to a self-locking chuck. Background Art

[0002] In the medical and health care fields, various medium and low frequency therapeutic devices must be electrically connected to the electrode sheets with the help of wires during use so that the therapeutic current generated by the therapeutic device can be transmitted to the electrode sheets; the existing connection methods between the wires and the electrode sheets mainly include jack type, snap type and magnetic snap type; the jack type refers to directly setting a conductive jack on the electrode sheet, or setting a conductive jack at the far end of the wire after the wire is led out between the conductive layer and the insulating layer of the electrode sheet; the snap type is to set a mutually matching conductive snap on both the electrode sheet and the metal film, and realize the electrical connection by mechanical force; the magnetic snap type is to set a ferromagnetic conductive snap (female head) and a permanent magnet on the electrode sheet and the metal film respectively Conductive snaps (male head) are used to connect the electrodes, and the electrical connection is achieved by magnetic attraction. The common problems of the above three methods are: the metal film and the electrode sheet are separated by external pulling, and when pulled by external force during use, they are prone to accidental loosening, causing sudden current changes and affecting the safety of treatment; and the conductive sockets and snaps are contaminated and worn, which may cause poor contact of the electrode sheet and affect its use; in addition, the electrode sheet must be provided with matching conductive interfaces such as conductive sockets, conductive connecting wires, conductive snaps or magnetic conductive snaps, otherwise it cannot be used directly, which leads to a relatively complex structure and production process of the electrode sheet, and a high manufacturing cost, which needs further improvement. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a self-locking chuck with a stable and reliable connection to ensure effective and long-lasting use and improve safety of use, while simplifying the structure and production process of the electrode sheet matched therewith, so that the electrode sheet can be used directly without adding any conductive interface, thereby reducing the manufacturing cost of the electrode sheet.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a self-locking chuck, including a base, a slide plate, a metal film and a wire, characterized in that a slideway is provided between the front and rear ends of the base, a convex block is formed upward on the upper rear side of the base, a guide groove is provided at the rear end of the convex block, the lower side of the guide groove is connected with the upper side of the slideway, an inclined surface is formed on the upper inner wall of the front end of the slideway, the slide plate is movably arranged in the slideway, and the metal film is fixed on the upper plane of the slide plate; a limited slot hole is provided on the lower inner wall of the slideway, and correspondingly, the rear side of the lower plane of the slide plate A button block is formed upwardly, and the button block can be movably inserted into the limiting slot hole; a rectangular frame is formed upwardly on the rear side of the upper plane of the slide plate, and the upper side of the rectangular frame can be movably inserted into the guide slot; two symmetrical and upwardly distributed inclined plates are formed outwardly on the upper side of the front end of the rectangular frame, and the two inclined plates cooperate with the inclined surfaces, and a convex point is formed downwardly at the front end of the lower sides of the two inclined plates; a locking column is formed upwardly on the front side of the upper plane of the slide plate, and correspondingly, a locking hole is opened at the front end of the base, and one end of the wire passes through the rectangular frame forward and overlaps the upper side of the metal film.

[0005] Preferably, the lower plane of the slide plate is attached to the lower inner wall of the slideway, and the left and right sides of the slide plate are each formed with a slide bar symmetrically distributed upward, and the upper side of each slide bar is attached to the upper inner wall of the slideway.

[0006] Preferably, a notch groove symmetrically distributed to each other is provided on both left and right sides of the front end of the base.

[0007] Compared with the prior art, the advantages of the present invention are: the present invention uses a surface contact method to press the electrode sheet onto the metal film, so that the electrode sheet can be used directly without adding any conductive interface, and a stable and reliable connection is established with the therapeutic device with the help of a wire to ensure effective and long-lasting use; and because the direction of the pressing force between the electrode sheet and the metal film is vertical, and with the help of the positioning hole and the locking column, it can effectively prevent loosening due to external force, thereby improving the safety of use; in addition, the present invention also simplifies the structure and production process of the electrode sheet that matches it, thereby reducing the manufacturing cost of the electrode sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a right front side structural diagram of the present invention;

[0009] Figure 2 It is the lower structural diagram of the present invention;

[0010] Figure 3 It is a cross-sectional structural diagram of the present invention;

[0011] Figure 4It is a schematic diagram of the connection method of the present invention;

[0012] Figure 5 This is a state diagram after the present invention is connected;

[0013] Figure 6 It is a cross-sectional structural diagram of the present invention after connection;

[0014] Figure 7 It is a cross-sectional structural diagram of the electrode sheet of the present invention. DETAILED DESCRIPTION

[0015] like Figures 1 to 7 As shown, a self-locking chuck comprises a base 1, a slide plate 2, a metal film 3 and a wire 4; a slideway 12 is provided between the front and rear ends of the base 1, a protrusion 11 is formed upward on the upper rear side of the base 1, a guide groove 13 is provided at the rear end of the protrusion 11, the lower side of the guide groove 13 is communicated with the upper side of the slideway 12, an inclined surface 14 is formed on the upper inner wall of the front end of the slideway 12, the slide plate 2 is movably arranged in the slideway 12, the metal film 3 is fixed on the upper plane of the slide plate 2, the lower plane of the slide plate 2 is attached to the lower inner wall of the slideway 12, and a slide bar 21 symmetrically distributed with respect to each other is formed upward on the left and right sides of the slide plate 2, and the upper side of each slide bar 21 is attached to the upper inner wall of the slideway 12; a limiting slot hole 17 is provided on the lower inner wall of the slideway 12, and correspondingly, the slide bar 21 is provided with a limit slot hole 17, A button block 24 is formed downward on the rear side of the lower plane of the plate 2, and the button block 24 can be movably inserted into the limit slot 17. A rectangular frame 25 is formed upward on the rear side of the upper plane of the skateboard 2, and the upper side of the rectangular frame 25 can be movably inserted into the guide slot 13. Two symmetrical and upwardly distributed inclined plates 23 are formed outward on the upper side of the front end of the rectangular frame 25. The two inclined plates 23 cooperate with the inclined surface 14. A convex point 26 is formed downward on the front end of the lower side of the two inclined plates 23. A locking column 22 is formed upward on the front side of the upper plane of the skateboard 2. Correspondingly, a locking hole 16 is provided at the front end of the base 1, and a notch groove 15 symmetrically distributed with each other is provided on the left and right sides of the front end of the base 1. One end of the wire 4 passes through the rectangular frame 25 forward and overlaps the upper side of the metal film 3.

[0016] When in use: connect the other end of the wire 4 to the therapeutic device; then insert the extension section 51 on one end of the electrode sheet 5 between the metal film 3 and the two inclined plates 23 and below the two protrusions 26, and then sleeve the positioning hole 52 on one end of the electrode sheet 5 on the locking column 22, then slide the button block 24 backward with your finger, so that the slide plate 2 moves backward together with the extension section 51, during this process, the rectangular frame 25 moves backward along the guide groove 13 to ensure the straightness and stability of the movement of the slide plate 2; as the slide plate 2 moves backward, the upper sides of the two inclined plates 23 move backward along the inclined surface 14 and enter the slideway 12, thereby pressing down while moving, so that the two protrusions 26 press the extension section 51 on the electrode sheet 5 against the upper side of the metal film 3, thus completing the connection; at the same time, the locking column 22 will slowly move backward and contact the inclined surface 14, and then move backward along the inclined surface 14 until it is inserted upward into the locking hole 16, thus completing the locking to prevent the electrode sheet 5 from loosening.

[0017] The top of the electrode sheet 5 is a protective layer 8, a conductive layer 6 is arranged below the protective layer 8, an insulating layer 9 is arranged on the rear side below the conductive layer 6, and an adhesive layer 7 is arranged on the front side below the conductive layer 6; when the extension section 51 on the electrode sheet 5 is pressed against the metal film 3, the lower side of the rear end of the conductive layer 6 is tightly attached to the metal film 3, so that the therapeutic current of the therapeutic device is connected to the electrode sheet 5 through the metal film 3 to work normally; in addition, the positioning hole 52 is eccentrically set and cooperates with the position of the locking column 22, which can prevent the positions of the protective layer 8 and the adhesive layer 7 of the electrode sheet 5 from being reversed upside down.

[0018] After the connection, the two protrusions 26 generate and maintain a large and downward vertical pressure on the electrode sheet 5. When accidentally pulled, a horizontal pulling force is generated on the electrode sheet 5. This horizontal pulling force cannot offset or reduce the above-mentioned vertical pressure, so the electrode sheet 5 will not loosen. This self-locking method can effectively avoid the situation where the treatment current suddenly changes due to the accidental loosening of the electrode sheet 5, thereby ensuring the safety of the treatment process. At the same time, since the metal film 3 and the conductive layer 6 on the electrode sheet 5 are in surface contact, reliable contact is guaranteed. Compared with traditional conductive jacks or conductive snaps, there are no poor contact problems such as contact pollution and stain wear, and it has better electrical connection characteristics.

[0019] When disassembling: use your fingers to slightly lift the front end of the inclined surface 14 upwards, so that the locking column 22 is downwardly disengaged from the locking hole 16, and then slide the button block 24 forward to move the slide plate 2 forward. During this process, the two inclined plates 23 leave the slideway 12 forward and use their own elasticity to reset upward along the inclined surface 14 until the two protrusions 26 leave the electrode sheet 5, and finally remove the electrode sheet 5.

[0020] The present invention uses a surface contact method to press the electrode sheet 5 onto the metal film 3, so that the electrode sheet 5 can be used directly without adding any conductive interface, and a stable and reliable connection is established with the therapeutic device with the help of the wire 4 to ensure effective and long-lasting use; and because the pressing force direction between the electrode sheet 5 and the metal film 3 is in a vertical direction, and with the help of the positioning hole 52 and the positioning connection with the locking column 22, it can effectively prevent loosening due to external force, thereby improving the safety of use; in addition, the present invention also simplifies the structure and production process of the electrode sheet matched therewith, thereby reducing the manufacturing cost of the electrode sheet.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking chuck for connecting electrode sheets, comprising a base, a slide plate, a metal film and a wire, characterized in that: A slide is provided between the front and rear ends of the base, a protrusion is formed upward on the upper rear side of the base, a guide groove is provided at the rear end of the protrusion, the lower side of the guide groove is connected to the upper side of the slide, an inclined surface is formed on the upper inner wall of the front end of the slide, the slide plate is movably arranged in the slide, and the metal film is fixed on the upper plane of the slide plate; a limited slot hole is provided on the lower inner wall of the slide, and correspondingly, a button block is formed downward on the rear side of the lower plane of the slide plate, the button block can be movably inserted into the limited slot hole, and the rear side of the upper plane of the slide plate is upward A rectangular frame is formed, the upper side of the rectangular frame can be movably inserted into the guide groove, two symmetrical inclined plates are formed outwardly on the upper side of the front end of the rectangular frame, and the two inclined plates are matched with the inclined surface, and a convex point is formed downwardly on the front end of the lower side of the two inclined plates, which is used to press the electrode sheet on the metal film; a locking column is formed upwardly on the front side of the upper plane of the slide plate, and the positioning hole on one end of the electrode sheet is sleeved thereon, and correspondingly, a locking hole is opened at the front end of the base, and one end of the wire passes through the rectangular frame forward and overlaps the upper side of the metal film; The lower plane of the slide plate is attached to the lower inner wall of the slideway, and the left and right sides of the slide plate are formed with a slide bar symmetrically distributed upward, and the upper side of each slide bar is attached to the upper inner wall of the slideway; The front end of the base is provided with a notch groove on both left and right sides thereof which are symmetrically distributed with each other.

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