Low-cost transformer with shell not prone to falling off

Abstract

The utility model discloses a low-cost transformer with a shell not prone to falling off, and relates to the field of transformer design, the low-cost transformer comprises a front shell and a rear shell, and a magnetic core is installed between the front shell and the rear shell in a matched mode; the magnetic core is fixedly installed in the rear shell, and the front shell is fixedly installed on the front side of the rear shell through ultrasonic welding. The ultrasonic welding line adopts any one of a step type welding line, a groove type welding line and a cutting type welding line; an ultrasonic welding line is formed at the peripheral edge of the front side of the rear shell, and the peripheral edge of the rear side of the front shell is pressed on the ultrasonic welding line for ultrasonic welding; compared with the prior art, the front shell and the rear shell are connected and fixed in an ultrasonic welding mode, the welding time can be effectively saved through the arrangement of the ultrasonic welding line, meanwhile, the welding effect is ensured, loosening or falling cannot occur when the ultrasonic welding line is pulled by external force, and stability is higher.

Description

Technical Field

[0001] The utility model relates to the field of transformer design, in particular to a low-cost transformer with a shell that is not easy to fall off. Background Art

[0002] Conventional electronic transformer products use glue dispensing to complete the bonding of the magnetic core inside the shell. Due to the structural characteristics of the product, the glue cannot completely cover the contact surface between the front and rear shells. During manufacturing, the shell will fall off and loosen after being subjected to external force. This installation method has low firmness and the shell may loosen and fall off from time to time.

[0003] In the prior art, a complete potting method is generally used for installation. For example, in the prior art (Announcement No.: CN212990891U, Announcement Date: 2021.04.16), an electronic transformer is disclosed, which fills the internal gap of the shell by potting glue to enhance the firmness and insulation of the transformer assembly;

[0004] The prior art (announcement number: CN218647726U, announcement date: 2023.03.17) also discloses an electronic transformer with high-voltage insulation resistance, which installs the electronic transformer into a shell, and then pours black glue into the shell to fill each air gap of the product. The vertical frame and the magnetic core can be isolated by the black glue. When working, the black glue can act as a meson to achieve the effect of increasing the high voltage, and at the same time can achieve complete insulation, and will not affect the surrounding components during operation.

[0005] Due to the structural characteristics of the product, the fully encapsulated glue cannot completely cover the contact surface of the front and rear shells. There is still a possibility that the shell will loosen and fall off due to external forces. The traditional method of fixing with glue cannot solve this technical defect. Therefore, it is necessary to design a low-cost transformer with a shell that is not easy to fall off to solve the previous technical problems. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0007] A low-cost transformer with a shell that is not easy to fall off, comprising a front shell and a rear shell, wherein a magnetic core is installed between the front shell and the rear shell;

[0008] The magnetic core is fixedly installed in the rear housing, and the front housing is fixedly installed on the front side of the rear housing by ultrasonic welding;

[0009] An ultrasonic welding line is formed at the outer peripheral edge of the front side of the rear shell, and the outer peripheral edge of the rear side of the front shell is pressed on the ultrasonic welding line for ultrasonic welding.

[0010] Furthermore: the ultrasonic welding line adopts any one of a step-type welding line, a groove-type welding line, and a cutting-type welding line.

[0011] Furthermore: the magnetic core is fixed in the rear shell by glue dispensing.

[0012] Furthermore, the magnetic core is glued to the rear housing with epoxy resin glue.

[0013] Furthermore: the air gap between the rear shell and the magnetic core is filled with black glue.

[0014] Furthermore: the black glue is epoxy resin glue.

[0015] Furthermore: a transformer winding is fixedly installed in the magnetic core, and a threading hole is formed on the upper side of the rear shell, and the transformer winding is wired and arranged through the threading hole.

[0016] Furthermore: screw mounting positions are formed on both left and right sides of the rear housing.

[0017] Compared with the prior art, the beneficial effects of the utility model are: an ultrasonic welding line is set, and the connection and fixation between the front shell and the rear shell are completed by ultrasonic welding. The setting of the ultrasonic welding line can effectively save welding time while ensuring the welding effect. It will not loosen or fall off when encountering external force, and has higher stability.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a main structural schematic diagram of the utility model;

[0021] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the magnetic core of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the utility model when viewed from above.

[0024] As shown in the figure: 1. Front shell; 2. Rear shell; 3. Magnetic core; 4. Ultrasonic welding line; 5. Threading hole; 6. Screw installation position. DETAILED DESCRIPTION

[0025] The technical solution of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the drawings later is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0027] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1-4 As shown, the utility model is a low-cost transformer with a shell that is not easy to fall off, comprising a front shell 1 and a rear shell 2, wherein a magnetic core 3 is installed between the front shell 1 and the rear shell 2;

[0031] The magnetic core 3 is fixedly installed in the rear housing 2, and the front housing 1 is fixedly installed on the front side of the rear housing 2 by ultrasonic welding;

[0032] An ultrasonic welding line 4 is formed at the outer peripheral edge of the front side of the rear shell 2, and the outer peripheral edge of the rear side of the front shell 1 is pressed on the ultrasonic welding line 4 for ultrasonic welding;

[0033] The principle is: an ultrasonic welding line 4 is set, and the connection and fixation between the front shell 1 and the rear shell 2 are completed by ultrasonic welding. The setting of the ultrasonic welding line 4 can effectively save welding time and ensure the welding effect at the same time. It will not loosen or fall off when encountering external force, and has higher stability.

[0034] Furthermore: the ultrasonic welding line 4 adopts any one of a step-type welding line, a groove-type welding line, and a cutting-type welding line; it can more effectively weld and fix the front shell 1 and the rear shell 2, with a short welding time and high welding stability.

[0035] Optionally, the magnetic core 3 is fixed in the rear housing 2 by glue dispensing; the glue used to glue the magnetic core 3 in the rear housing 2 by glue dispensing is epoxy resin glue.

[0036] Optionally, the air gap between the rear housing 2 and the magnetic core 3 is filled with black glue (not shown in the figure); the black glue is epoxy resin glue.

[0037] The magnetic core 3 can be fixed in the rear housing 2 by the above two methods. The dispensing method has the advantage of high production effect, while the potting filling method has better insulation effect. The appropriate fixing method can be selected according to actual needs, which is suitable for different models of electronic transformers.

[0038] Furthermore: a transformer winding (not shown) is fixedly installed in the magnetic core 3, and a threading hole 5 is formed on the upper side of the rear shell 2, and the transformer winding is wired through the threading hole 5; this can facilitate the wiring of the electronic connector on the PCB board.

[0039] Furthermore: screw mounting positions 6 are formed on both the left and right sides of the rear housing 2, which can improve the stability of the rear housing 2 being fixed on the PCB board.

[0040] This embodiment does not impose any formal limitation on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the previous embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A low-cost transformer with a shell that is not easy to fall off, comprising a front shell and a rear shell, wherein a magnetic core is installed between the front shell and the rear shell; characterized in that: The magnetic core is fixedly installed in the rear housing, and the front housing is fixedly installed on the front side of the rear housing by ultrasonic welding; An ultrasonic welding line is formed at the outer peripheral edge of the front side of the rear shell, and the outer peripheral edge of the rear side of the front shell is pressed on the ultrasonic welding line for ultrasonic welding.

2. A low-cost transformer with a casing that is not easy to fall off according to claim 1, characterized in that: The ultrasonic welding line is any one of a step-type welding line, a groove-type welding line, and a cutting-type welding line.

3. A low-cost transformer with a casing that is not easy to fall off according to claim 1, characterized in that: The magnetic core is fixed in the rear shell by glue dispensing.

4. A low-cost transformer with a casing that is not easy to fall off according to claim 3, characterized in that: The glue that glues the magnetic core to the rear housing is epoxy resin glue.

5. A low-cost transformer with a casing that is not easy to fall off according to claim 1, characterized in that: The air gap between the rear shell and the magnetic core is filled with black glue.

6. A low-cost transformer with a casing that is not easy to fall off according to claim 5, characterized in that: The black glue is epoxy resin glue.

7. A low-cost transformer with a casing that is not easy to fall off according to claim 1, characterized in that: The transformer winding is fixedly installed in the magnetic core, and a threading hole is formed on the upper side of the rear shell, and the transformer winding is connected and arranged through the threading hole.

8. A low-cost transformer with a casing that is not easy to fall off according to claim 1, characterized in that: Screw installation positions are formed on both left and right sides of the rear housing.

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