Portable key structure of tooth root tip positioning instrument

Abstract

The utility model relates to the technical field of medical oral equipment, in particular to a portable key structure of a tooth root apex locator, which comprises a casing, a circuit board mounted in the casing and a plurality of keys mounted on the circuit board, and a plurality of mounting holes in one-to-one correspondence with the keys are arranged on the front end face of the casing. A panel is arranged on the front end face of the machine shell, a plurality of convex hull keys in one-to-one correspondence with the mounting holes are arranged on the panel, the convex hull keys are attached to the front end faces of the mounting holes, pressing guide columns are arranged in the mounting holes, and the outer sides of the pressing guide columns are wrapped with guide column supports; the central axis of the pressing guide column coincides with the central axis of the key, when the convex hull key is pressed, pressure can be directly transmitted to the key through the pressing guide column, the key is prevented from being triggered by mistake, the pressing force of the key is reduced to the maximum extent, and safe, reliable and comfortable key operation after a doctor uses a PE film is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical oral equipment, in particular to a key structure of a portable tooth apex locator. Background Art

[0002] A dental apex locator is a medical device that helps measure the length of a tooth's root canal. Doctors often adjust the device to meet various needs, often using buttons on the device.

[0003] Common device buttons on the market include plastic rebound mechanical buttons. Figure 5 One approach is to use touch buttons. However, doctors often apply a layer of blue PE film to the surface of medical devices to reduce cross-contamination. This results in conventional mechanical buttons requiring greater pressure to activate, or the PE film-covered buttons may fail to activate or become unresponsive when doctors wear surgical gloves. Summary of the Invention

[0004] The purpose of the utility model is to provide a lightweight tooth apex locator key structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lightweight root apex locator button structure, comprising a casing, a circuit board installed inside the casing, and a plurality of buttons installed on the circuit board, a plurality of mounting holes corresponding one-to-one to the buttons are provided on the front end face of the casing, a panel is provided on the front end face of the casing, and a plurality of convex buttons corresponding one-to-one to the mounting holes are provided on the panel, the convex buttons are fitted on the front end face of the mounting hole, a pressing guide column is provided inside the mounting hole, and the outer side of the pressing guide column is wrapped with a guide column support, and the central axis of the pressing guide column coincides with the central axis of the button.

[0006] Furthermore, a limiting step is provided at the edge of the mounting hole, a limiting portion is provided on the outer periphery of the guide column support, and the limiting portion is located inside the mounting hole, and a gap for pressing is reserved between the limiting portion and the limiting step.

[0007] Furthermore, the pressing guide column is made of hard material, and the guide column support is made of soft rubber.

[0008] Furthermore, the top end of the pressing guide post abuts against the inner side wall of the convex button and / or the bottom end of the pressing guide post abuts against the button.

[0009] Compared with the prior art, the beneficial effects of the present invention are: the button structure of the lightweight root apex locator is provided with a pressing guide post inside the mounting hole, and when the convex button is pressed, the pressure can be directly transferred to the button through the pressing guide post, which not only avoids the false triggering of the button, but also reduces the pressing force of the button to the greatest extent, effectively ensuring the safe, reliable and comfortable button operation after the doctor uses the PE film. At the same time, the outer side of the pressing guide post is wrapped with a guide post support, which can play a positioning role on the one hand, and on the other hand, it can avoid the pressing guide post shaking inside the mounting hole to generate noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an explosion diagram of the utility model;

[0011] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0012] Figure 3 For this utility model Figure 2 AA-axis cross-sectional structural diagram;

[0013] Figure 4 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0014] Figure 5 This is a schematic diagram of the button structure of the tooth apex locator housing in the prior art.

[0015] In the figure: 1, housing; 101, mounting hole; 102, limiting step; 2, circuit board; 3, button; 4, panel; 5, convex button; 6, pressing guide post; 7, guide post support; 701, limiting part. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" can explicitly or implicitly include at least one of the features. For the purpose of the description and claims of the present invention and the above-mentioned drawings, the terms "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0018] See also Figure 1-4 The utility model provides an embodiment: a lightweight tooth root apex locator button structure, including a housing 1, a circuit board 2 installed inside the housing 1 and a plurality of buttons 3 installed on the circuit board 2, the front surface of the housing 1 is provided with a plurality of mounting holes 101 corresponding to the buttons 3, the front surface of the housing 1 is provided with a panel 4, and the panel 4 is provided with a plurality of convex buttons 5 corresponding to the mounting holes 101. The material of the panel 4 can be PET material, which is directly adhered to the front surface of the housing 1. The convex buttons 5 are integrally formed with the panel 4. The convex buttons 5 are attached to the front surface of the mounting holes 101 and can be deformed when pressed. A pressing guide post 6 is provided inside the hole 101, and the outer side of the pressing guide post 6 is wrapped with a guide post support 7. The pressing guide post 6 and the guide post support 7 are over-fitted or clearance-fitted. The central axis of the pressing guide post 6 coincides with the central axis of the button 3. The top of the pressing guide post 6 abuts against the inner side wall of the convex button 5 and / or the bottom of the pressing guide post 6 abuts against the button 3. The convex button 5 extends outward to form a bulge. When medical staff need to adjust parameters, they need to overcome the resistance of the deformation of the convex button 5 before pushing the pressing guide post 6 to move along its axial direction inside the mounting hole 101, and finally transmit the pressure to the button 3, which can prevent accidental touches. Figure 5 This is a schematic diagram of the button structure of the root apex locator casing in the prior art. The two sides of the center guide column are connected to the mounting hole 101 through plastic connectors. When using it, medical staff need to overcome the resistance of the deformation of both the convex button 5 and the plastic connector to transfer the pressure to the button 3. Therefore, a greater pressing force is required to press the switch. In this embodiment, the pressing guide column 6 and the guide column support 7 are movably arranged inside the mounting hole 101, which reduces the pressing force of the button to the greatest extent, and effectively ensures safe, reliable and comfortable button operation after the doctor uses the PE film.

[0019] In this embodiment, the pressing guide column 6 is made of hard materials, such as plastic, metal, etc., and the guide column support 7 is made of soft rubber parts, such as silicone, TPU, TPE, rubber, etc. The guide column support 7 can fix the pressing guide column 6 inside the mounting hole 101 so that it can only move along its axial direction. In this embodiment, the two ends of the pressing guide column 6 and the guide column support 7 are flush, and the guide column support 7 is in flexible contact with the convex button 5 and the mounting hole 101, which can avoid shaking and generating noise.

[0020] In this embodiment, a limiting step 102 is provided at the edge of the mounting hole 101, and a limiting portion 701 is provided on the outer periphery of the guide column support 7, and the limiting portion 701 is located on the inner side of the mounting hole 101. A pressing gap is reserved between the limiting portion 701 and the limiting step 102. The limiting portion 701 can ensure that the pressing guide column 6 and the guide column support 7 are always located inside the mounting hole 101, thereby preventing the pressing guide column 6 and the guide column support 7 from passing through the mounting hole 101 and falling into the interior of the casing 1.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A lightweight tooth apex locator key structure, comprising a housing (1), a circuit board (2) mounted inside the housing (1), and a plurality of keys (3) mounted on the circuit board (2), wherein a front face of the housing (1) is provided with a plurality of mounting holes (101) corresponding one-to-one with the keys (3), a front face of the housing (1) is provided with a panel (4), and a plurality of convex keys (5) corresponding one-to-one with the mounting holes (101) are provided on the panel (4), and the convex keys (5) are fitted on the front faces of the mounting holes (101), characterized in that: A pressing guide post (6) is provided inside the mounting hole (101), and a guide post support (7) is wrapped around the outside of the pressing guide post (6), and the central axis of the pressing guide post (6) coincides with the central axis of the button (3).

2. The key structure of the portable tooth apex locator according to claim 1, characterized in that: A limiting step (102) is provided at the edge of the mounting hole (101), a limiting portion (701) is provided on the outer periphery of the guide column support (7), and the limiting portion (701) is located inside the mounting hole (101), and a gap for pressing is reserved between the limiting portion (701) and the limiting step (102).

3. The key structure of the portable tooth apex locator according to claim 1, characterized in that: The pressing guide column (6) is made of a hard material, and the guide column support (7) is made of a soft rubber part.

4. The key structure of the portable tooth apex locator according to claim 1, characterized in that: The top end of the pressing guide post (6) abuts against the inner side wall of the convex button (5) and / or the bottom end of the pressing guide post (6) abuts against the button (3).

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