High and low frequency transformer stable in installation

Abstract

The invention relates to the technical field of transformers, and discloses a stably mounted high and low frequency transformer, which comprises a mounting bracket, a coil arranged on the mounting bracket, pins arranged at the bottom of the mounting bracket, and a protection device arranged on the mounting bracket, the protection device comprises a protection cover arranged on the installation support, supporting sets arranged on the two sides of the installation support in a linear array mode, locking sets symmetrically arranged on the two sides of the protection cover, and unlocking sets arranged on the two sides of the locking sets, wherein the top of the protection cover is flat, and the supporting sets are arranged on the two sides of the installation support in a linear array mode. The transformer can be protected and supported through the arranged protection device, and the situation that when the transformers in different shapes are turned over and welded, the circuit board deflects due to the fact that the transformers are extruded by the operation table, so that the pin ends of the transformers cannot be welded to the circuit board in an attached mode, and the welding quality and the welding firmness are affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a high- and low-frequency transformer with stable installation. Background Art

[0002] A transformer is a device used to transform AC voltage, current and impedance. It can play a role in high-frequency or low-frequency circuits and is named for the difference in the operating frequency range. In the low-frequency field, low-frequency transformers are commonly used in power transmission and some electronic devices that do not require high frequency. It can convert the high-voltage electricity generated by the power plant into low-voltage electricity suitable for home and industrial use through a step-down transformer to meet different power needs. Its principle is based on the law of electromagnetic induction, and the voltage conversion is achieved through the difference in the number of turns of the primary and secondary coils. High-frequency transformers are mainly used in high-frequency circuits such as switching power supplies. In a switching power supply, it can convert the DC input voltage into a high-frequency AC voltage, and then obtain the required DC output voltage through rectification and filtering.

[0003] When installing existing small electronic transformers on a circuit board, it is usually necessary to pre-process the pins first, straighten the tilted or bent pins, align them with the insertion holes on the circuit board, turn the circuit board over, place the circuit board on the operating table, solder the pins, and finally use diagonal pliers to cut off the excess pins, leaving about 1 mm length on the solder joint to prevent stress from damaging the pad. Since the pins of existing small transformers are usually directly exposed, the pins are easily squeezed, bent and broken, which will affect the quality and service life of welding, so the pins need to be protected. And because the shapes of transformers are different, especially for transformers with round or other uneven top shapes, when turning them over for welding, it is not easy to maintain the stability of the transformer under the squeezing of the operating table, which affects the welding quality and even causes welding failure. Summary of the invention

[0004] In view of the problems in the prior art that the pins of small transformers are not protected, causing the pins to be bent and damaged, and the transformer is not stable enough when it is turned over for welding, thus affecting the welding quality, a high and low frequency transformer with stable installation is proposed.

[0005] The purpose is to realize the switching between protection and support through the protection device, protect the pins, and improve the stability of the pins during welding.

[0006] The technical solution of the present invention is a high-low frequency transformer with stable installation, comprising a mounting bracket, a coil arranged on the mounting bracket, and a pin arranged at the bottom of the mounting bracket, and also comprising a protective device arranged on the mounting bracket; The protection device comprises a protection cover arranged on the mounting bracket, the top of the protection cover is flat, a support group with linear arrays arranged on both sides of the mounting bracket, a locking group symmetrically arranged on both sides of the protection cover, and an unlocking group arranged on both sides of the locking group; The protection device is used to protect the pins before the transformer is installed, and to support the top of the transformer during installation; the support group plays a role in protection and support when flipping the welding pins, the locking group plays a role in locking protection and welding support, and the unlocking group is used for pressing and unlocking when installing and removing the protective cover; The locking assembly includes through holes opened on both sides of the protective cover, and a locking plate arranged at the bottom of the through holes, and the locking plate is made of a bendable elastic material; The support group includes triangular slots in a linear array formed on the mounting bracket.

[0007] Furthermore, one side of the bottom of the locking plate is sloped, and the top of the locking plate is curved hook-shaped, and a bending point is formed at the connection between the two.

[0008] Furthermore, the locking group also includes an abutment plate arranged on one side of the top of the locking plate, a limiting rod arranged on the top of the locking plate, the limiting rod moves within the unlocking group, and an inclined surface arranged on one side of the abutment plate close to the triangular groove, and the bottom of the abutment plate abuts against the triangular groove.

[0009] Furthermore, the unlocking group includes a first unlocking groove opened on the side wall of the through hole, and a second unlocking groove opened on the bottom of the first unlocking groove.

[0010] Furthermore, the first unlocking groove and the second unlocking groove are both curved and facing away from each other, and the two are symmetrical about a horizontal line at their connection in the vertical direction.

[0011] Furthermore, the support group also includes a protective baffle disposed in the bottom triangular groove, and the outer side wall of the baffle is smoothly curved, and a supporting baffle disposed in the top triangular groove.

[0012] Furthermore, an anti-slip groove is provided on one side of the locking plate with a slope, and arc blocks are symmetrically arranged on both sides of the middle of the through hole, and one side of the arc block does not exceed the side of the locking plate with a slope.

[0013] Furthermore, pressing grooves are symmetrically provided on both sides of the bottom of the mounting bracket.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The protective device can achieve the protection and support effect of the transformer, so as to prevent the transformers of different shapes from being squeezed by the operating table during the flip welding, causing the circuit board to be deflected, thereby causing the pin end of the transformer to be unable to fit and weld with the circuit board, affecting the welding quality and welding reliability.

[0015] 2. When the protective cover plays a protective role, the locking plate will be limited in the triangular groove under its elastic action. At this time, the pins are hidden in the protective cover, which protects the pins and prevents the pins from being squeezed and bent or damaged and unusable. When many small transformers are stacked together, there will be no mutual engagement between the pins, which is convenient for finding and taking out for use.

[0016] 3. The first unlocking groove is used to remove the protective cover after pressing the locking plate. The second unlocking groove is used to directly push the bottom of the protective cover during welding to achieve direct switching from the protection state to the stable support state without pressing the locking plate to unlock, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the transformer of the present invention; Figure 3 It is a schematic diagram of the overall structure of the transformer and the protective cover after being separated from each other; Figure 4 It is a front cross-sectional structural schematic diagram of the present invention as a whole; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the locking plate of the present invention; Figure 8 It is a schematic diagram of a partially enlarged structure of the locking plate and the protective cover being separated according to the present invention; Fig. 9 It is a schematic diagram of the overall structure of the unlocking group of the present invention; Fig.10 It is a schematic structural diagram of the present invention when the protective cover is in a supporting state when the pins are turned over for welding; Fig.11 For the present invention Fig.10 A schematic diagram of the front cross-sectional structure of the protective cover in the state; Fig.12 It is a schematic diagram of the force direction of the locking plate of the present invention and the deflection and unlocking direction after the force is applied.

[0018] In the figure: 1. mounting bracket; 2. coil; 3. pin; 4. protective cover; 5. locking group; 51. through hole; 52. locking plate; 53. bending point; 54. abutment plate; 55. limit rod; 56. inclined surface; 6. unlocking group; 61. first unlocking groove; 62. second unlocking groove; 7. supporting group; 71. triangular groove; 72. protective baffle; 73. supporting baffle; 8. anti-slip groove; 9. arc block; 10. pressing groove. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] Example 1, reference Figure 1-Figure 12 , which is the first embodiment of the present invention, provides a high-low frequency transformer with stable installation, including a mounting bracket 1, a coil 2 mounted on the mounting bracket 1, and a pin 3 mounted at the bottom of the mounting bracket 1, and also includes a protective device mounted on the mounting bracket 1, and the top of the protective cover 4 is flat; the protective device includes a protective cover 4 mounted on the mounting bracket 1, a support group 7 with a linear array opened on both sides of the mounting bracket 1, a locking group 5 symmetrically installed on both sides of the protective cover 4, and an unlocking group 6 installed on both sides of the locking group 5; the protective device is used for protecting the pin 3 before the transformer is installed, and for supporting the top of the transformer during installation; the support group 7 plays a role in protection and support when flipping the welding pin 3, the locking group 5 plays a role in locking protection and welding support, and the unlocking group 6 is used for pressing and unlocking when installing and removing the protective cover 4; the locking group 5 includes through holes 51 opened on both sides of the protective cover 4, and a locking plate 52 fixedly connected to the bottom of the through hole 51, and the locking plate 52 is a bendable elastic material; the support group 7 includes a triangular groove 71 with a linear array opened on the mounting bracket 1.

[0021] Specifically, when a small electronic transformer is installed on a circuit board, it is usually necessary to pre-process the pin 3 first, straighten the tilted or bent pin 3, align it with the insertion hole on the circuit board, turn the circuit board over, place the circuit board on the operating table, solder the pin 3, and finally use diagonal pliers to cut off the excess pin 3, leaving about 1 mm of the solder joint to prevent stress from damaging the pad. Since the pin 3 of an existing small transformer is usually directly exposed, the pin 3 is easily squeezed, bent and broken, which will affect the quality and service life of the soldering, so the pin 3 needs to be protected. Before installation, this type of transformer can be inserted into the mounting bracket 1 from one side of the pin 3 through the protective cover 4, and the triangular groove 71 can be clamped by the elastic and bendable locking plate 52 to protect the pin 3; when welding is required, the protective cover 4 is pushed from one side of the pin 3, so that the protective cover 4 moves upward from one side of the pin 3, so that the pin 3 can be completely exposed and inserted into the insertion hole of the circuit board. At this time, the protective cover 4 is clamped on the top of the mounting bracket 1, so that when the transformer is turned over for welding, the top of the transformer can be completely covered, thereby preventing transformers of different shapes from being squeezed by the operating table when being turned over for welding, causing the circuit board to be deflected, thereby causing the pin 3 end of the transformer to be unable to fit and weld with the circuit board, affecting the welding quality and welding reliability.

[0022] Reference Figure 5 and Figure 7-Figure 8 The bottom side of the locking plate 52 is sloped, and the top thereof is curved hook-shaped, and a bending point 53 is formed at the connection between the two.

[0023] Specifically, during welding, the protective cover 4 is directly pushed upward, so that the protective cover 4 automatically moves upward until the pin 3 is completely exposed. After welding, the protective cover 4 needs to be removed. By pressing the locking plates 52 on both sides, the bottom of the locking plates 52 is pressed and deformed, and the hook-shaped part on the top is also bent. Under the limiting action of the unlocking group 6, the locking plate 52 tends to become a vertical state when pressed, and the hook-shaped part on the top is straightened with the bending point 53 as the rotation point, so that the locking plate 52 is released from the locking of the triangular groove 71, thereby realizing the quick removal of the protective cover 4.

[0024] Reference Figure 5-Figure 8 The locking group 5 also includes an abutment plate 54 fixedly connected to one side of the top of the locking plate 52, a limiting rod 55 rotatably connected to the top of the locking plate 52, the limiting rod 55 moves in the unlocking group 6, and an inclined surface 56 arranged on one side of the abutment plate 54 close to the triangular groove 71, and the bottom of the abutment plate 54 abuts against the triangular groove 71.

[0025] Specifically, when the protective cover 4 plays a protective role, the locking plate 52 will be limited in the triangular groove 71 under its elastic action. At this time, the pin 3 is hidden in the protective cover 4, thereby protecting the pin 3 and preventing the pin 3 from being squeezed and bent or damaged and unusable. When many small transformers are stacked together, the pins 3 will not be engaged with each other, which makes it easy to find and take out for use.

[0026] Example 2, reference Figure 6 , which is a second embodiment of the present invention. This embodiment is different from the first embodiment in that the unlocking group 6 includes a first unlocking groove 61 opened on the side wall of the through hole 51, and a second unlocking groove 62 opened at the bottom of the first unlocking groove 61.

[0027] Specifically, the first unlocking groove 61 is used to remove the protective cover 4 after pressing the locking plate 52, and the second unlocking groove 62 is used to directly push the bottom of the protective cover 4 during welding to achieve direct switching from a protective state to a stable supporting state without pressing the locking plate 52 to unlock, which is convenient and quick.

[0028] Reference Figure 6 The first unlocking groove 61 and the second unlocking groove 62 are both curved and facing away from each other, and the two are symmetrical about the horizontal line at their connection in the vertical direction.

[0029] Specifically, when the bottom of the protective cover 4 is pushed, due to the elasticity of the locking plate 52, the triangular groove 71 will squeeze and push the top of the abutment plate 54, so that the locking plate 52 is bent at the bending point 53, and the limiting rod 55 will be pushed to move along the second unlocking groove 62, so that the abutment plate 54 can be disengaged from the triangular groove 71, thereby realizing the movement and adjustment of the locking plate 52 on the support group 7 until the protective cover 4 is adjusted to the top and stops. At this time, the top of the protective cover 4 protrudes from the top of the mounting bracket 1, thereby supporting and improving the welding stability. After welding is completed, the two sides of the locking plate 52 are pressed to straighten the hook-shaped portion at the top of the locking plate 52, so that the limiting rod 55 moves along the first unlocking groove 61, thereby making the abutting plate 54 escape from the limit of the triangular groove 71. The arc surface design of the first unlocking groove 61 and the second unlocking groove 62 facing each other can realize that the top of the locking plate 52 quickly moves away from the triangular groove 71, and when the locking plate 52 is pressed, the abutting plate 54 will rotate around the limiting rod 55 as the center when moving along the first unlocking groove 61, further accelerating the abutting plate 54 from the limit of the triangular groove 71, improving the unlocking efficiency and the removal efficiency of the protective cover 4. The rest of the structure is the same as that of the embodiment 1.

[0030] Example 3, reference Figure 4-Figure 6, which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the support group 7 also includes a protective baffle 72 fixedly connected to the bottom triangular groove 71, and the outer side wall of the baffle is smoothly curved, and a support baffle 73 fixedly connected to the top triangular groove 71.

[0031] The locking plate 52 is preferably positioned adjacent to the locking plate 52, with the locking plate 52 positioned adjacent to the locking plate 52. The locking plate 52 is preferably positioned adjacent to the locking plate 52, with the locking plate 52 positioned adjacent to the locking plate 52. The locking plate 52 is preferably positioned adjacent to the locking plate 52, with the locking plate 52 positioned adjacent to the locking plate 52.

[0032] Reference Figure 4 and Figure 7 An anti-slip groove 8 is provided on one side of the locking plate 52 with a slope, and arc blocks 9 are symmetrically arranged on both sides of the middle of the through hole 51, and one side of the arc block 9 does not exceed the side of the locking plate 52 with a slope.

[0033] Specifically, the anti-slip groove 8 is used to increase the friction force when pressing, and the arc block 9 is used to be pushed by fingers when pressing the locking plate 52 to take out the protective cover 4, so as to facilitate the direct removal of the protective cover 4 and avoid pressing the locking plate 52 with too much force, resulting in excessive deformation and affecting its deformation recovery ability.

[0034] Reference Fig.10 Pressing grooves 10 are symmetrically provided on both sides of the bottom of the mounting bracket 1 .

[0035] Specifically, the design of the pressing groove 10 facilitates pushing the protective cover 4. The remaining structure is the same as that of the second embodiment.

[0036] Based on Examples 1-3, the working principle of the present invention is as follows: When a small electronic transformer is installed on a circuit board, it is usually necessary to pre-process the pin 3 first, straighten the tilted or bent pin 3, align it with the insertion hole on the circuit board, turn the circuit board over, place the circuit board on the operating table, solder the pin 3, and finally use diagonal pliers to cut off the excess pin 3, leaving about 1 mm of the solder joint to prevent stress from damaging the pad. Since the pin 3 of an existing small transformer is usually directly exposed, the pin 3 is easily squeezed, bent and broken, which will affect the quality and service life of the soldering, so the pin 3 needs to be protected. Before installation, this type of transformer can be inserted into the mounting bracket 1 from one side of the pin 3 through the protective cover 4, and the triangular groove 71 can be clamped by the elastic and bendable locking plate 52 to protect the pin 3; when welding is required, the protective cover 4 is pushed from one side of the pin 3, so that the protective cover 4 moves upward from one side of the pin 3, so that the pin 3 can be completely exposed and inserted into the insertion hole of the circuit board. At this time, the protective cover 4 is clamped on the top of the mounting bracket 1, so that when the transformer is turned over for welding, the top of the transformer can be completely covered, thereby preventing transformers of different shapes from being squeezed by the operating table when being turned over for welding, causing the circuit board to be deflected, thereby causing the pin 3 end of the transformer to be unable to fit and weld with the circuit board, affecting the welding quality and welding reliability.

[0037] When the bottom of the protective cover 4 is pushed, due to the elasticity of the locking plate 52, the triangular groove 71 will squeeze and push the top of the abutment plate 54, so that the locking plate 52 is bent at the bending point 53, and the limiting rod 55 will be pushed to move along the second unlocking groove 62, so that the abutment plate 54 can be disengaged from the triangular groove 71, thereby realizing the movement and adjustment of the locking plate 52 on the support group 7 until the protective cover 4 is adjusted to the top and stops. At this time, the top of the protective cover 4 protrudes from the top of the mounting bracket 1, thereby supporting and improving the welding stability. After welding is completed, press both sides of the locking plate 52 to straighten the hook-shaped part at the top of the locking plate 52, so that the limiting rod 55 moves along the first unlocking groove 61, thereby disengaging the abutment plate 54 from the limitation of the triangular groove 71. The arc surface design of the first unlocking groove 61 and the second unlocking groove 62 facing back can enable the top of the locking plate 52 to quickly move away from the triangular groove 71, and when the locking plate 52 is pressed, the abutment plate 54 will also rotate around the limiting rod 55 as the center when moving along the first unlocking groove 61, further accelerating the abutment plate 54 to disengage from the limitation of the triangular groove 71, thereby improving the unlocking efficiency and the removal efficiency of the protective cover 4.

[0038] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high- and low-frequency transformer with stable installation, comprising a mounting bracket (1), a coil (2) arranged on the mounting bracket (1), and a pin (3) arranged at the bottom of the mounting bracket (1), characterized in that: Also included is a protective device arranged on the mounting bracket (1); The protection device comprises a protection cover (4) arranged on the mounting bracket (1), the top of the protection cover (4) being flat, a support group (7) arranged in a linear array on both sides of the mounting bracket (1), a locking group (5) symmetrically arranged on both sides of the protection cover (4), and an unlocking group (6) arranged on both sides of the locking group (5); The protection device is used to protect the pins (3) before the transformer is installed, and is also used to support the top of the transformer during installation; the support group (7) plays a role in protection and support when flipping the welding pins (3); the locking group (5) plays a role in locking protection and welding support; the unlocking group (6) is used for pressing and unlocking when installing and removing the protective cover (4); The locking assembly (5) comprises through holes (51) opened on both sides of the protective cover (4), and a locking plate (52) arranged at the bottom of the through holes (51), and the locking plate (52) is made of a bendable elastic material; The support group (7) comprises triangular grooves (71) formed in a linear array on the mounting bracket (1).

2. The stable installation high and low frequency transformer according to claim 1, characterized in that: One side of the bottom of the locking plate (52) is sloped, and the top of the locking plate is in a curved hook shape, with a bending point (53) formed at the connection between the two.

3. The stable installation high and low frequency transformer according to claim 1, characterized in that: The locking group (5) further comprises an abutment plate (54) arranged on one side of the top of the locking plate (52), a limiting rod (55) arranged on the top of the locking plate (52), the limiting rod (55) moving in the unlocking group (6), and an inclined surface (56) arranged on one side of the abutment plate (54) close to the triangular groove (71), and the bottom of the abutment plate (54) abuts against the triangular groove (71).

4. The stable installation high and low frequency transformer according to claim 1, characterized in that: The unlocking group (6) comprises a first unlocking groove (61) formed on a side wall of the through hole (51), and a second unlocking groove (62) formed on a bottom of the first unlocking groove (61).

5. The stable installation high and low frequency transformer according to claim 4, characterized in that: The first unlocking groove (61) and the second unlocking groove (62) are both curved and facing away from each other, and the two are symmetrical about the horizontal line at their connection in the vertical direction.

6. The stable installation high and low frequency transformer according to claim 1, characterized in that: The support group (7) further comprises a protective baffle (72) arranged in the bottom triangular groove (71), wherein the outer side wall of the baffle is smoothly curved, and a supporting baffle (73) arranged in the top triangular groove (71).

7. The stable installation high and low frequency transformer according to claim 2, characterized in that: An anti-slip groove (8) is provided on one side of the locking plate (52) that is in the form of a slope, and arc blocks (9) are symmetrically provided on both sides of the middle of the through hole (51), with one side of the arc block (9) not exceeding the side of the locking plate (52) that is in the form of a slope.

8. The stable installation high and low frequency transformer according to claim 1, characterized in that: Pressing grooves (10) are symmetrically provided on both sides of the bottom of the mounting bracket (1).

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