Positioning jig and earphone shell using same

Abstract

The utility model discloses a locating jig and an earphone shell applying the locating jig, the locating jig comprises a locating bottom table and a locating mechanism located on the locating bottom table, a servo motor is fixed on one side wall of the locating bottom table, a movable groove is further formed in the locating bottom table, and the locating mechanism is located on the locating bottom table. The movable groove is provided with two openings and distributed in the two sides of the top wall of the positioning bottom table, a threaded rod, a limiting rod located below the threaded rod and two inner movable seats are arranged in the movable groove, an output shaft of the servo motor is fixedly connected with the threaded rod, the limiting rod is welded in the movable groove, and the two inner movable seats are installed at the two ends of the threaded rod in a threaded mode respectively; the screwing directions of threads at the two ends of the threaded rod are opposite, and the two inner movable seats are both slidably installed on the limiting rod. When the positioning jig is used, a machine can quickly reach an accurate position when processing earphone shells with different sizes, the height of the machine does not need to be adjusted, the processing work is facilitated, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone shells, in particular to a positioning jig and an earphone shell using the positioning jig. Background Technique

[0002] Before processing the earphone shell of a true wireless earphone, it is necessary to use a positioning jig to position it, and then various processing (such as drilling, etc.) can be carried out on it using a corresponding machine. The current positioning jig cannot adjust the height of the earphone shell after fixing it. A set of positioning jigs needs to be applied to earphone shells of various different sizes, and there are slight size differences between earphone shells of different sizes. This leads to the need to finely adjust the height of the machine during processing. Otherwise, the position processed by the machine is inaccurate. However, the fine adjustment work of the height of the machine is rather troublesome and is not conducive to improving the processing efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a positioning jig and an earphone shell using the positioning jig, so that the machine can quickly reach the accurate position when processing earphone shells of different sizes and does not need to adjust the height of the machine, which facilitates the processing work and solves the problem that the current positioning jig is not convenient for adjusting the height of the earphone shell.

[0004] To achieve the above object, the present utility model provides the following technical solution: A positioning jig, including a positioning base and a positioning mechanism located on the positioning base. A servo motor is fixed on one side wall of the positioning base, and an activity groove is also provided on the positioning base. The activity groove has two openings and is distributed on both sides of the top wall of the positioning base. A threaded rod, a limiting rod located below the threaded rod, and two inner movable seats are provided in the activity groove. The output shaft of the servo motor is fixedly connected to the threaded rod. The limiting rod is welded in the activity groove. The two inner movable seats are respectively threadedly installed at both ends of the threaded rod. The thread directions at both ends of the threaded rod are opposite, and both inner movable seats are slidably installed on the limiting rod, so that when the threaded rod rotates, it can drive the two inner movable seats to translate in opposite directions or away from each other on the limiting rod. The positioning mechanism includes positioning seats respectively welded on the two inner movable seats and chucks located inside the two positioning seats. Two symmetrically distributed chucks are provided on the inner side of each positioning seat. The inner wall of the chuck is arc-shaped. Inner sliding grooves are formed on the inner walls on both sides of each positioning seat, and two sliding plates are respectively inserted in the two inner sliding grooves in a matching manner. The two sliding plates are fixedly welded to the two chucks on the inner side of the positioning seat. Two groups of cylinders are fixed at the bottom of the positioning base. Each group of cylinders has two cylinders and respectively corresponds to the two chucks on the inner side of one of the positioning seats. The two groups of cylinders are respectively located directly below the two positioning seats, and a movable rod is fixedly connected above each cylinder. An electromagnet is installed on each movable rod. A magnet cooperating with the electromagnet is inlaid and fixed on the bottom wall of each chuck. In practical applications, the lengths of the electromagnet and the magnet should be as large as possible so that the range in which the electromagnet and the magnet can cooperate with each other is larger, so that when the positioning seat and the chuck undergo a small displacement, the electromagnet and the magnet can always cooperate with each other.

[0005] As a preferred implementation: The threaded rod and the limiting rod are both horizontally designed in the activity groove, and both ends of the threaded rod are rotatably installed on the positioning base; so that the threaded rod can rotate more stably when driven by the servo motor.

[0006] As a preferred implementation: Both of the two positioning seats are designed in a U shape, and the two positioning seats are arranged facing each other on the positioning base.

[0007] As a preferred implementation: Inner patches are fixedly bonded to the opposite sides of the two chucks on the inner side of the positioning seat; among which the inner patches can be made of soft materials such as rubber or silica gel.

[0008] As a preferred implementation: Four installation grooves are formed on the bottom wall of the positioning base. There are four cylinders in total and they are respectively installed in the four installation grooves; so that the four cylinders have a stable structure and are hidden in the four installation grooves.

[0009] As a preferred implementation: Four top grooves are formed on the top wall of the positioning base. There are four movable rods in total and they are respectively located in the four top grooves; the four electromagnets move up and down in the four top grooves.

[0010] An earphone shell using the above positioning jig, including a shell body, the radian of the outer wall of the shell body is the same as the radian of the inner wall of the clamping head.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: in the present utility model, after the clamping heads on both sides of the shell body fix it, the clamping heads on both sides of the positioning seat can be moved up or down through the operation of two cylinders, so as to meet the accurate positioning of shell bodies of different sizes, enabling the machine to quickly reach the accurate position when processing earphone shells of different sizes without adjusting the height of the machine, facilitating the processing work and improving the processing efficiency. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0013] Figure 2 For the present utility model Figure 1 The schematic cross-sectional view at A-A in;

[0014] Figure 3 For the present utility model Figure 1 The schematic cross-sectional view at B-B in;

[0015] Figure 4 For the present utility model Figure 3 The enlarged view of the structure at C in;

[0016] Figure 5 For the present utility model Figure 3 The enlarged view of the structure at D in;

[0017] Figure 6 It is one of the schematic structural diagrams of Embodiment 2 of the present utility model;

[0018] Figure 7 It is the other schematic structural diagram of Embodiment 2 of the present utility model;

[0019] Figure 8 It is the front view of Embodiment 2 of the present utility model.

[0020] The reference numerals and names in the drawings are as follows: 1, positioning base; 2, servo motor; 3, movable slot; 4, threaded rod; 5, limiting rod; 6, inner movable seat; 7, positioning seat; 8, clamping head; 9, inner patch; 10, inner sliding slot; 11, sliding plate; 12, installation slot; 13, cylinder; 14, top slot; 15, movable rod; 16, electromagnet; 17, magnet; 18, shell body. Detailed Description of the Invention

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0023] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] Please refer to Figures 1 to 4, the first embodiment provided by the utility model: a positioning jig, including a positioning base 1 and a positioning mechanism located on the positioning base 1. A servo motor 2 is fixed on one side wall of the positioning base 1, and an activity groove 3 is also formed on the positioning base 1. The activity groove 3 has two openings and is distributed on both sides of the top wall of the positioning base 1. A threaded rod 4, a limiting rod 5 located below the threaded rod 4, and two inner movable seats 6 are arranged in the activity groove 3. The output shaft of the servo motor 2 is fixedly connected to the threaded rod 4. The limiting rod 5 is welded in the activity groove 3. Both the threaded rod 4 and the limiting rod 5 are horizontally designed in the activity groove 3, and both ends of the threaded rod 4 are rotatably installed on the positioning base 1, so that the threaded rod 4 can operate more stably when driven by the servo motor 2. The two inner movable seats 6 are respectively threadedly installed at both ends of the threaded rod 4. The thread directions at both ends of the threaded rod 4 are opposite, and both inner movable seats 6 are slidably installed on the limiting rod 5, so that when the threaded rod 4 rotates, it can drive the two inner movable seats 6 to translate in opposite or away directions on the limiting rod 5. The positioning mechanism includes positioning seats 7 respectively welded on the two inner movable seats 6 and chucks 8 located inside the two positioning seats 7. Both positioning seats 7 are designed in a U shape, and the two positioning seats 7 are arranged facing each other on the positioning base 1. Two symmetrically distributed chucks 8 are arranged inside each positioning seat 7. The inner wall of the chuck 8 is arc-shaped. Inner patches 9 are fixedly bonded to the opposite sides of the two chucks 8 inside the positioning seat 7. The inner patch 9 can be made of soft materials such as rubber or silica gel. Inner sliding grooves 10 are formed on the inner walls on both sides of each positioning seat 7, and sliding plates 11 are inserted in the two inner sliding grooves 10 in a fitting manner. The two sliding plates 11 are fixedly welded to the two chucks 8 inside the positioning seat 7 respectively;

[0026] Please refer to Figures 3 to 5 , four installation grooves 12 are formed on the bottom wall of the positioning base 1. Two groups of air cylinders 13 are fixed at the bottom of the positioning base 1. There are four air cylinders 13 in total and they are respectively installed in the four installation grooves 12, so that the four air cylinders 13 are structurally stable and hidden in the four installation grooves 12. Each group of air cylinders 13 has two air cylinders and they respectively correspond to the two chucks 8 inside one of the positioning seats 7. And the two groups of air cylinders 13 are respectively located directly below the two positioning seats 7. Four top grooves 14 are formed on the top wall of the positioning base 1. An activity rod 15 is fixedly connected above each air cylinder 13. There are four activity rods 15 in total and they are respectively located in the four top grooves 14. Four electromagnets 16 move up and down in the four top grooves 14. An electromagnet 16 is installed on each activity rod 15. A magnet 17 cooperating with the electromagnet 16 is inlaid and fixed on the bottom wall of each chuck 8. In practical applications, the lengths of the electromagnet 16 and the magnet 17 should be as large as possible, so that the range in which the electromagnet 16 and the magnet 17 can cooperate with each other is larger. Thus, when the positioning seat 7 and the chuck 8 have a small displacement, the electromagnet 16 and the magnet 17 can always cooperate with each other.

[0027] Embodiment Two:

[0028] Please refer to Figure 1 、 Figures 6 to 8 The second embodiment provided by the present utility model: A headphone shell using the above-mentioned positioning jig, including a shell body 18, the radian of the outer wall of the shell body 18 is the same as the radian of the inner wall of the clamping head 8

[0029] During the operation of the present utility model, before processing the shell body 18, place the shell body 18 between the two positioning seats 7 on the positioning base 1, and make the servo motor 2 operate to drive the threaded rod 4 to rotate, so that the two inner movable seats 6 can slide on the limiting rod 5, making the two inner movable seats 6 approach each other (the two inner movable seats 6 perform translational movement in the opposite direction), making the two positioning seats 7 approach each other, so that the outer walls on both sides of the shell body 18 respectively fit with the clamping heads 8 on the inner sides of the two positioning seats 7 (in fact, the shell body 18 is in direct contact with the inner patch 9), and use the clamping heads 8 on the inner sides of the two positioning seats 7 to position the shell body 18; Subsequently, a corresponding machine can be used to process the shell body 18 (such as drilling, etc.). According to the different sizes of the shell body 18, its height limited by the two positioning seats 7 is also different. At this time, without adjusting the height of the machine, only the height of the shell body 18 itself can be adjusted. Therefore, the implementation method of this solution is: At this time, the magnets 17 below the four clamping heads 8 just correspond to the four electromagnets 16 (the four magnets 17 are within the working influence range of the four electromagnets 16, even after the inner movable seat 6 drives the positioning seat 7 to perform a certain translation), drive the four cylinders 13 to operate to drive the four movable rods 15 to rise, and finally make the four electromagnets 16 attract the four magnets 17. After attraction, the four clamping heads 8 can be pushed upward or pulled downward, thereby driving the shell body 18 limited by the four clamping heads 8 to rise and fall accordingly, making its position accurate and the processing smoother.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights involved.

Claims

1. A positioning fixture, comprising a positioning base (1) and a positioning mechanism located on the positioning base (1), characterized in that: A servo motor (2) is fixed to one side wall of the positioning base (1), and a movable groove (3) is also provided on the positioning base (1), wherein the movable groove (3) has two openings and is distributed on both sides of the top wall of the positioning base (1), and a threaded rod (4), a limiting rod (5) located below the threaded rod (4) and two inner movable seats (6) are provided in the movable groove (3), the output shaft of the servo motor (2) is fixedly connected to the threaded rod (4), the limiting rod (5) is welded in the movable groove (3), the two inner movable seats (6) are respectively threadedly installed at the two ends of the threaded rod (4), the threads at the two ends of the threaded rod (4) are in opposite directions, and the two inner movable seats (6) are both slidably installed on the limiting rod (5), the positioning mechanism comprises positioning seats (7) respectively welded to the two inner movable seats (6) and a chuck (8) located inside the two positioning seats (7), and each positioning seat (7) has a positioning seat (7) inside. Two symmetrically distributed chucks (8) are provided on each side, the inner wall of the chuck (8) is arc-shaped, the inner wall of each side of the positioning seat (7) is formed with an inner slide groove (10), and the two inner slide grooves (10) are fitted with a slide plate (11), and the two slide plates (11) are respectively fixedly welded to the two chucks (8) on the inner side of the positioning seat (7), and two groups of cylinders (13) are fixed on the bottom of the positioning base (1), each group of cylinders (13) is provided with two chucks (8) on the inner side of one of the positioning seats (7), and the two groups of cylinders (13) are respectively located directly below the two positioning seats (7), and a movable rod (15) is fixedly connected to the top of each cylinder (13), and an electromagnet (16) is installed on each movable rod (15), and a magnet (17) matching the electromagnet (16) is inlaid and fixed on the bottom wall of each chuck (8).

2. A positioning fixture according to claim 1, characterized in that: The threaded rod (4) and the limiting rod (5) are both horizontally designed in the movable groove (3), and both ends of the threaded rod (4) are rotatably mounted on the positioning base (1).

3. A positioning fixture according to claim 1, characterized in that: The two positioning seats (7) are both U-shaped, and the two positioning seats (7) are arranged on the positioning base (1) facing each other.

4. A positioning fixture according to claim 1, characterized in that: The two clamps (8) on the inner side of the positioning seat (7) are both fixedly bonded with inner patches (9) on the opposite sides thereof.

5. A positioning fixture according to claim 1, characterized in that: The bottom wall of the positioning base (1) is formed with four mounting grooves (12), and a total of four cylinders (13) are provided and are respectively mounted in the four mounting grooves (12).

6. A positioning fixture according to claim 1, characterized in that: The top wall of the positioning base (1) is formed with four top grooves (14), and a total of four movable rods (15) are provided and are respectively located in the four top grooves (14).

7. An earphone shell using the positioning fixture according to any one of claims 1 to 6, characterized in that: It comprises a shell body (18), wherein the curvature of the outer wall of the shell body (18) is the same as the curvature of the inner wall of the chuck (8).

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