Dental radical bending machine

Abstract

The utility model discloses a dental radical bending machine, and relates to the field of dental treatment instruments. Comprising a machine head and a machine body, the machine head is fixed to the machine body in an inserted mode, a conductive pin is arranged at the end of the machine body, and the conductive pin is inserted into the machine head when the machine head and the machine body are fixed in an inserted mode. The machine head is provided with a pressing assembly, the pressing assembly, the machine head, the machine body and the conductive pin form a loop used for transmitting signals, and the outer wall of the machine body and the outer wall of the machine head are covered with oxidation insulating layers. According to the bending machine, special installation positions for installing the signal transmission assembly are not needed in the machine head and the machine body, the whole structure is more concise, assembly is easier, the whole size is smaller, meanwhile, the whole bending machine can adopt a metal shell as a support, the strength is higher, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of dental treatment instruments, and in particular to a dental root canal bending machine. Background Technology

[0002] Currently, root canal measuring machines conventionally use chucks to hold the root canal file while simultaneously conducting current through a solid metal casing. During operation, the rotating root canal file rubs against the chuck's gripping mechanism, leading to wear and reduced conductivity. Furthermore, the metal casing's contact with the patient's oral cavity causes significant current loss, affecting the accuracy of root canal measurements.

[0003] Therefore, to overcome the above problems, a copper strip is used to conduct signals inside the bending machine housing, close to the inner wall. Specifically, an electrode spring is installed between the machine head and the locking nut. One end of the electrode spring abuts against the contact conductor, and the other end abuts against the locking nut. The machine head, electrode spring, and locking nut form a circuit for signal transmission. The machine head is fitted with a root canal file, and a drive motor is installed inside the housing to drive the root canal file. The electrode spring elastically contacts the back cover and the locking nut, enabling conduction from the root canal file to the drive motor, ensuring the continuity and stability of the root canal measurement signal. However, in actual assembly, it was found that due to the limited space inside the housing, inserting the copper strip would increase the overall size of the bending machine and the number of parts to be assembled, affecting assembly efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a dental root canal bending machine.

[0005] This utility model is achieved by the following technical solution: a dental root canal bending machine, including a head and a body, wherein the head is inserted and fixed to the body, and a conductive pin is provided between the head and the body. When the head and the body are inserted and fixed, the conductive pin is inserted into the head and the end of the conductive pin abuts against the body.

[0006] The machine head is equipped with a pressing component, and the pressing component, the machine head, the machine body, and the conductive pin form a circuit for transmitting signals. The outer walls of the machine body and the machine head are covered with an oxide insulating layer.

[0007] The machine head includes a housing with an insertion hole, and the pressing component is located at the bottom of the insertion hole;

[0008] The pressing assembly includes an upper pressure cover and a lower pressure cover. The upper pressure cover is disposed on the lower pressure cover and presses down along the height direction of the lower pressure cover. The lower pressure cover is sleeved and fixed on the insertion hole and communicates with the insertion hole. The insertion hole is used to insert a file needle. An elastic element is provided between the upper pressure cover and the lower pressure cover. When the upper pressure cover is pressed down, it is reset by the elastic element. The metal of the part of the lower pressure cover that contacts the machine head is exposed for transmitting signals. The upper pressure cover, the elastic element, the machine head, the machine body, and the conductive pin form a circuit for transmitting signals.

[0009] The upper pressure cover includes a metal inner cover, an insulating outer cover, and an insulating outer ring. The insulating outer ring is sleeved and fixed on the outer wall of the lower pressure cover. The insulating outer cover is engaged with the insulating outer ring, and the metal inner cover is engaged with the insulating outer cover.

[0010] The elastic element includes a first compression spring and a second compression spring. The first compression spring is disposed between the inner metal cover and the lower pressure cover. The inner metal cover has a conductive element on its end face facing the lower pressure cover. When the file needle is inserted, it abuts against the conductive element. The second compression spring is disposed between the conductive element and the inner metal cover.

[0011] The metal inner cover, the second compression spring, the conductive element, the first compression spring, the lower pressure cover, the machine head, the conductive pin, and the machine body form a path for transmitting signals.

[0012] The conductive element includes a contact conductor and a steel ball. The contact conductor is disposed on the inner metal cover and has a receiving hole. The steel ball is placed in the receiving hole and protrudes from the plane of the lower pressure cover. When the file needle is inserted into the insertion hole, the bottom of the file needle contacts the steel ball.

[0013] The machine head includes a metal housing with mounting holes for fixing a pressing component. The pressing component contacts the inner wall and end of the mounting hole. The outer wall of the metal housing is provided with an oxide insulating layer, and the end of the inner wall of the mounting hole exposes the metal body.

[0014] A positioning hole is provided at the end where the head is connected to the body. The positioning hole is provided on the metal housing. When the head is engaged with the body, the conductive pin is inserted into the positioning hole and contacts the inner wall of the positioning hole. The end of the conductive pin extending out of the positioning hole abuts against the body. A signal channel is formed between the conductive pin and the inner wall of the positioning hole.

[0015] The body includes a metal casing, the exposed end of the conductive pin abuts against the metal casing and is located on the side of the metal casing facing the head, and the conductive pin and the metal casing form a signal path.

[0016] Compared to existing technologies, this invention features a metal casing for both the machine head and the body, utilizing these casings as signal transmission channels. Signal transmission is achieved through contact signals between the upper and lower pressure covers. The outer surface of the bending machine is insulated by forming an oxide insulating layer. During operation, the entire outer surface is insulated, while current is transmitted through the metal inner cover, the machine head and body casings, and the engagement of conductive pins. An oxide layer on the outer walls of the machine head and body provides insulation. Holding the machine during use does not cause short circuits and has minimal impact on signal strength. In practical use, since there is no need for dedicated signal transmission paths or pre-reserved installation positions inside the machine head and body, the structure is simple and compact. Furthermore, the overall metal casing of the machine head and body provides higher strength. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the bending machine of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the bending machine of this utility model from a top view angle;

[0019] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0020] Figure 4 yes Figure 3 Enlarged schematic diagram of a local part of the structure;

[0021] Figure 5 yes Figure 2 Schematic diagram of the cross-sectional structure along the BB direction;

[0022] In the diagram: 1. Machine head; 2. Machine body; 3. Conductive pin; 4. Pressing assembly; 41. Upper pressure cover; 411. Metal inner cover; 412. Insulating outer cover; 413. Insulating outer ring; 42. Lower pressure cover; 43. First compression spring; 44. Second compression spring; 45. Contact conductor; 451. Steel ball; 452. Metal cup; 453. Pressure block; 5. Positioning hole; 6. File needle. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Reference Figure 1 and Figure 2A dental root canal bending machine includes a head 1 and a body 2, with the head 1 inserted and fixed to the body 2. A conductive pin 3 is provided at the end of the body 2; when the head 1 is inserted and fixed to the body 2, the conductive pin 3 is inserted into the head 1. A pressing component 4 is provided on the head 1. The pressing component 4, head 1, body 2, and conductive pin 3 form a circuit for signal transmission. The outer walls of the body 2 and head 1 are covered with an oxide insulating layer. The outer oxide layer provides insulation, preventing short circuits during handling and minimizing signal interference. Furthermore, in actual use, the pressing component 4 and the outer shell of the head 1 and body 2 form a signal path, thereby reducing the number of parts required for assembly. This eliminates the need for a dedicated mounting location for the signal transmission component, reducing the overall size.

[0025] In this embodiment, the head unit 1 includes a housing with an insertion hole, and a pressing component 4 is disposed on the insertion hole. The housing of the head unit 1 can be made of a metal with good conductivity, such as an alloy. An oxide layer can be formed on the surface of the alloy housing, which serves as insulation, preventing short circuits in the signal during handling and minimizing signal interference. At the same time, the metal housing also has good strength, improving its service life.

[0026] The pressing assembly 4 includes an upper pressure cover 41 and a lower pressure cover 42. The upper pressure cover 41 is disposed on the lower pressure cover 42 and presses down along the height direction of the lower pressure cover 42. The lower pressure cover 42 is sleeved and fixed on the insertion hole and communicates with the insertion hole. The insertion hole is used to insert the file needle 6. An elastic element is provided between the upper pressure cover 41 and the lower pressure cover 42. When the upper pressure cover 41 is pressed down, it is reset by the elastic element. The metal of the part of the lower pressure cover 42 that contacts the machine head 1 is exposed for signal transmission. The upper pressure cover 41, the elastic element, the machine head 1, the machine body 2, and the conductive pin 3 form a circuit for signal transmission. Specifically, the upper pressure cover 41 includes a metal inner cover 411, an insulating outer cover 412, and an insulating outer ring 413. The insulating outer ring 413 is sleeved and fixed on the outer wall of the lower pressure cover 42. The insulating outer cover 412 is engaged with the insulating outer ring 413. The insulating outer ring 413 is used as a mounting base for the insulating outer cover 412. The inner metal cover 411 engages with the outer insulating cover 412. In this embodiment, the elastic elements include a first compression spring 43 and a second compression spring 44. The first compression spring 43 is located between the inner metal cover 411 and the lower pressure cover 42. A conductive element is provided on the end face of the inner metal cover 411 facing the lower pressure cover. When the file needle 6 is inserted, it abuts against the conductive element. The second compression spring 44 is located between the conductive element and the inner metal cover 411. The inner metal cover 411, the second compression spring 44, the conductive element, the first compression spring 43, the lower pressure cover 42, the machine head 1, the conductive pin 3, and the machine body 2 form a path for transmitting signals. In this embodiment, during actual assembly, the second compression spring 44 and the first compression spring 43 are sleeved together, with the second compression spring 44 sleeved inside the first compression spring 43. When the actual signal is connected, the file needle 6 abuts against the conductive element. At this time, the signal change (generally an electrical signal change) of the filing needle 6 is transmitted through the filing needle 6, the conductive element, and the second compression spring 44 to the metal inner cover 411. The metal inner cover 411 is connected to the lower pressure cover 42 through the first compression spring 43. The lower pressure cover 42 has metal contact with the machine head 1. At this time, the signal on the lower pressure cover 42 is transmitted to the conductive pin 3 through the machine head 1. The conductive pin 3 is connected to the machine body 2. Thus, the metal inner cover 411, the second compression spring 44, the conductive element, the first compression spring 43, the lower pressure cover 42, the machine head 1, the conductive pin 3, and the machine body 2 form a path for signal transmission, realizing signal conduction. At the same time, it reduces the number of parts required for assembly, that is, it does not require a pre-set special installation position for the signal transmission component, reducing the overall size.

[0027] In this embodiment, the conductive element includes a contact conductor 45 and a steel ball 451. The contact conductor 45 is disposed on the inner metal cover 411 and has a receiving hole. The steel ball 451 is placed in the receiving hole and protrudes from the plane of the lower pressure cover 42. When the file needle 6 is inserted into the insertion hole, the bottom of the file needle 6 contacts the steel ball 451. The contact conductor 45 is divided into two parts, one of which is a pressure block 453. The pressure block 453 is made of a metal with good conductivity. The pressure block 453 is snapped and fixed on the inner metal cover 411 to form a signal channel. The lower end of the pressure block 453 is snapped into a metal cup 452. One end of the second compression spring 44 abuts against the metal cup 452, and the other end of the second compression spring 44 abuts against the inner metal cover 411. The middle part of the metal cup 452 has an opening for fixing the steel ball 451. The surface of the steel ball 451 protrudes from the metal cup 452. After the file needle 6 is inserted, the end abuts against the steel ball 451. The metal bowl 452 and the steel ball 451 can be integrally molded, fixed by snap-fit, or fixed by welding.

[0028] Based on the above embodiments, the head unit 1 includes a metal housing with mounting holes for fixing the pressing component 4. The pressing component 4 contacts the inner wall and end of the mounting hole. The outer wall of the metal housing is provided with an oxide insulating layer, and the end of the inner wall of the mounting hole exposes the metal body. A positioning hole 5 is provided at the end of the head unit 1 that connects to the body 2. The positioning hole 5 is located on the metal housing. When the head unit 1 is engaged with the body 2, the conductive pin 3 is inserted into the positioning hole 5 and contacts the inner wall of the positioning hole 5, forming a signal channel between the conductive pin 3 and the inner wall of the positioning hole 5. The signal travels along the pressing component 4 and the outer shell on the head unit 1 and body 2 to form a signal path, thereby reducing the number of parts required for assembly. That is, there is no need to pre-define a special mounting position for the signal transmission component, reducing the overall size.

[0029] A positioning hole 5 is provided at the end where the head 1 connects to the body 2. The positioning hole 5 is located on the metal housing. When the head 1 is engaged with the body 2, the conductive pin 3 is inserted into the positioning hole 5 and contacts the inner wall of the positioning hole 5. The end of the conductive pin 3 extending out of the positioning hole 5 abuts against the body 2, forming a signal channel between the conductive pin 3 and the inner wall of the positioning hole 5. The conductive pin 3 is hidden at the mating end of the body 2 and extends outward. When in use, the head 1 needs to be inserted with the conductive pin 3. The conductive pin 3 is also made of a metal with good conductivity, making it part of the signal path. After mating, the signal is transmitted to the conductive pin 3 through the metal housing of the head 1. The body 2 includes a metal shell. The exposed end of the conductive pin 3 abuts against the metal shell and is located on the side of the metal shell facing the head 1. The conductive pin 3 and the metal shell form a signal path. The signal is transmitted from the conductive pin 3 to the metal shell of the body 2 and continues to be transmitted through the metal shell of the body 2. The metal casing of the second body also has an oxide layer formed on its surface as an insulating layer to avoid interference with the signal when held, resulting in better signal transmission strength.

[0030] Compared to existing technologies, this invention does not require a dedicated signal transmission channel. Therefore, no special installation positions are needed within the head 1 and body 2 for installing signal transmission components, resulting in a simpler structure, easier assembly, and smaller overall size. Furthermore, the entire bending machine can utilize a metal shell for support, providing higher strength and a longer service life.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A dental root canal bending machine, comprising a head and a body, characterized in that: The machine head is inserted and fixed to the machine body. A conductive pin is provided between the machine head and the machine body. When the machine head is inserted and fixed to the machine body, the conductive pin is inserted into the machine head and the end of the conductive pin abuts against the machine body. The machine head is equipped with a pressing component, and the pressing component, the machine head, the machine body, and the conductive pin form a circuit for transmitting signals. The outer walls of the machine body and the machine head are covered with an oxide insulating layer.

2. The dental root canal bending machine according to claim 1, characterized in that: The machine head includes a housing, on which an insertion hole is formed, and the pressing component is disposed on the insertion hole; The pressing assembly includes an upper pressure cover and a lower pressure cover. The upper pressure cover is disposed on the lower pressure cover and presses down along the height direction of the lower pressure cover. The lower pressure cover is sleeved and fixed on the insertion hole and communicates with the insertion hole. The insertion hole is used to insert a file needle. An elastic element is provided between the upper pressure cover and the lower pressure cover. When the upper pressure cover is pressed down, it is reset by the elastic element. The metal of the part of the lower pressure cover that contacts the machine head is exposed for transmitting signals. The upper pressure cover, the elastic element, the machine head, the machine body, and the conductive pin form a circuit for transmitting signals.

3. The dental root canal bending machine according to claim 2, characterized in that: The upper pressure cover includes a metal inner cover, an insulating outer cover, and an insulating outer ring. The insulating outer ring is sleeved and fixed on the outer wall of the lower pressure cover. The insulating outer cover is engaged with the insulating outer ring, and the metal inner cover is engaged with the insulating outer cover. The elastic element includes a first compression spring and a second compression spring. The first compression spring is disposed between the inner metal cover and the lower pressure cover. The inner metal cover has a conductive element on its end face facing the lower pressure cover. When the file needle is inserted, it abuts against the conductive element. The second compression spring is disposed between the conductive element and the inner metal cover. The metal inner cover, the second compression spring, the conductor, the first compression spring, the lower pressure cover, the machine head, the conductive pin, and the machine body form a path for transmitting signals.

4. A dental root canal bending machine according to claim 3, characterized in that: The conductive element includes a contact conductor and a steel ball. The contact conductor is disposed on the inner metal cover and has a receiving hole. The steel ball is placed in the receiving hole and protrudes from the plane of the lower pressure cover. When the file needle is inserted into the insertion hole, the bottom of the file needle contacts the steel ball.

5. A dental root canal bending machine according to claim 1, characterized in that: The machine head includes a metal housing with mounting holes for fixing a pressing component. The pressing component contacts the inner wall and end of the mounting hole. The outer wall of the metal housing is provided with an oxide insulating layer, and the end of the inner wall of the mounting hole exposes the metal body.

6. A dental root canal bending machine according to claim 5, characterized in that: A positioning hole is provided at the end where the head is connected to the body. The positioning hole is provided on the metal housing. When the head is engaged with the body, the conductive pin is inserted into the positioning hole and contacts the inner wall of the positioning hole. The end of the conductive pin extending out of the positioning hole abuts against the body. A signal channel is formed between the conductive pin and the inner wall of the positioning hole.

7. A dental root canal bending machine according to claim 5 or 6, characterized in that: The body includes a metal casing, the exposed end of the conductive pin abuts against the metal casing and is located on the side of the metal casing facing the head, and the conductive pin and the metal casing form a signal path.

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