Transformer suitable for SMT automatic equipment to grab patches

Abstract

The utility model discloses a transformer suitable for SMT automation equipment to grab patches, and relates to the technical field of transformers, the transformer comprises an SMT grabbing flat cover and a winding framework, the left end and the right end of the winding framework extend to form winding anti-disengagement wings, the winding anti-disengagement wings are connected with two joint seats which are spaced front and back, an insertion gap is formed between the two joint seats, and the insertion gap is connected with the winding anti-disengagement wings. Guide columns in one-to-one correspondence with the joint seats are formed on the bottom side of the SMT grabbing flat cover. The guide column is an elastic guide column, and a clamping block is formed at the lower end of the guide column and matched with the bottom side of the joint seat in an abutting mode. At least four joint seats are arranged at the left end and the right end of the winding framework in total, and at least four guide columns are arranged on the bottom side of the SMT grabbing flat cover in total, so that the SMT grabbing flat cover is not easy to shift in the horizontal direction after insertion; and through the clamping blocks and the guide columns with the elastic bending characteristic, the SMT grabbing flat cover can achieve the clamping maintaining and detachable functions after being inserted through the guide columns, and the functionality is better.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer suitable for being grabbed and pasted by SMT automatic equipment. Background Art

[0002] The SMT patch transformer is a transformer connected to a circuit board through surface mounting technology. The working principle of the SMT patch transformer is the same as that of an ordinary transformer, both based on the principle of electromagnetic induction. When an alternating current passes through the primary winding, an alternating magnetic flux will be generated in the iron core, thereby inducing an electromotive force in the secondary winding to realize the transformation of voltage. Since the SMT patch transformer adopts surface mounting technology, its internal structure and winding layout may be more compact and complex, but the basic principle is no different from that of an ordinary transformer.

[0003] The existing SMT patch transformers generally meet the patch process but do not meet the automatic patching (that is, there is no flat cover on the top of the finished product to meet the auxiliary SMT automatic equipment for grabbing). The main solution in the industry is to integrally form the above-mentioned flat cover on the shell or the winding skeleton, which has the disadvantage that the flat cover cannot be disassembled. Summary of the Utility Model

[0004] The utility model aims to provide a technical solution that can solve the above problems to overcome the above situation.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A transformer suitable for being grabbed and pasted by SMT automatic equipment includes an SMT grabbing flat cover and a horizontally arranged winding skeleton. Both the left and right ends of the winding skeleton have insulating bases, and PIN pins are arranged on the insulating bases. A winding is wound on the winding skeleton, and at least part of the leads of the winding are led out and connected to the PIN pins on the insulating bases. A magnetic core is installed on the winding skeleton; the left and right ends of the winding skeleton also extend to form winding anti-disengagement wings, and at least one group of joint seats is connected to the side of the winding anti-disengagement wings away from the winding. Each group of joint seats includes 2 joint seats spaced front and back, and an insertion gap is formed between the 2 joint seats in each group of joint seats. Guide columns that can be inserted into the insertion gap from top to bottom and correspond to the joint seats one by one are formed on the bottom side of the SMT grabbing flat cover; the lower ends of the guide columns are lower than the bottom sides of the joint seats. When the guide columns are inserted into the insertion gap, the guide columns are close to or adjacent to the winding anti-disengagement wings and the side surface of the joint seat corresponding to the insertion gap; the guide columns are elastic guide columns with elastic bending characteristics, and a clamping block is formed on the side of the lower end of the guide column opposite to the joint seat. After being inserted in place, the clamping block constitutes a butt joint and cooperation with the bottom side of the joint seat.

[0006] As a further solution of the utility model: The clamping block has an insertion guiding inclined surface that cooperates with the side surface of the joint seat corresponding to the insertion gap.

[0007] As a further solution of the present utility model: the top side of the joint seat is lower than the top side of the wire winding anti - detachment wing; a first tenon protrusion is formed upward at a position on the top side of the joint seat away from the upper anti - detachment wing, and a first tenon groove is formed between the first tenon protrusion and the wire winding anti - detachment wing; a second tenon protrusion corresponding to the first tenon groove is formed on the bottom side of the SMT grasping flat cover; a reinforcing convex column is also formed on the bottom side of the SMT grasping flat cover, the reinforcing convex column and the second tenon protrusion are arranged at intervals, and a second tenon groove corresponding to the first tenon protrusion is formed between the reinforcing convex column and the second tenon protrusion.

[0008] As a further solution of the present utility model: a first abutting inclined surface is arranged on one side of the joint seat away from the wire winding anti - detachment wing, and the first abutting inclined surface is arranged to gradually incline downward from top to bottom along the direction away from the wire winding anti - detachment wing; a second abutting inclined surface corresponding to the first abutting inclined surface is arranged on the bottom side of the reinforcing convex column.

[0009] As a further solution of the present utility model: the magnetic core includes a magnetic column that can penetrate into the internal through - hole of the wire winding skeleton, and a connecting frame located outside the wire winding skeleton and connected to the magnetic column.

[0010] As a further solution of the present utility model: multiple protrusions and / or grooves are also arranged on the insulating base.

[0011] As a further solution of the present utility model: the wire winding anti - detachment wing includes a front anti - detachment wing arranged on the front side of the end of the wire winding skeleton, an upper anti - detachment wing arranged on the upper side of the end of the wire winding skeleton, and a rear anti - detachment wing arranged on the rear side of the end of the wire winding skeleton.

[0012] Compared with the prior art, the beneficial effects of the present technical solution are as follows: a total of at least 4 joint seats located at the left and right ends of the wire winding skeleton, and a total of at least 4 guide posts located on the bottom side of the SMT grasping flat cover make it difficult for the SMT grasping flat cover to shift horizontally after insertion; through the clamping block and the guide posts with elastic bending characteristics, the SMT grasping flat cover can achieve the functions of clamping and detachable after being inserted through the guide posts, and has better functionality.

[0013] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is another schematic structural diagram of the present utility model;

[0017] Figure 3 is Figure 2 an enlarged schematic diagram of the local structure at position A in

[0018] The corresponding reference numerals in the drawings are explained as follows:

[0019] SMT grasping flat cover - 1, winding skeleton - 2, insulating base - 3, PIN foot - 4, magnetic core - 5, winding anti - detachment wing - 6, joint seat - 7, first abutting inclined surface - 701, insertion gap - 8, guide post - 9, clamping block - 10, insertion guiding inclined surface - 1001, first tenon - 11, first mortise - 12, second tenon - 13, strengthening convex post - 14, second abutting inclined surface - 1401, second mortise - 15, winding - 16. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , a transformer suitable for SMT automatic equipment to grasp and patch, including a horizontally arranged winding skeleton 2. The winding skeleton 2 has an outer winding frame for winding, and an internal through - hole for passing through a magnetic core.

[0022] At the lower positions of the left and right ends of the winding skeleton 2, there are insulating bases 3. Multiple PIN feet 4 that can be used for SMT are arranged on the insulating bases 3. There are also multiple protrusions and / or grooves on the insulating bases 3 for increasing the creepage distance.

[0023] The left and right ends of the winding skeleton 2 also extend to form winding anti - detachment wings 6. The extending direction of the winding anti - detachment wings 6 is perpendicular to the length direction of the winding skeleton 2.

[0024] As Figure 1 shown, the length direction of the winding skeleton 2 is the left - right direction, and the two ends of the winding skeleton 2 are the left end and the right end of the winding skeleton 2.

[0025] The winding anti - detachment wing 6 includes a front anti - detachment wing disposed on the front side of the end (left end, right end) of the winding skeleton 2, an upper anti - detachment wing disposed on the upper side of the end of the winding skeleton 2, and a rear anti - detachment wing disposed on the rear side of the end of the winding skeleton 2.

[0026] A winding 16 is wound around the winding skeleton 2, and at least part of the leads of the winding 16 are led out and connected to the PIN pins 4 located on the insulating base. The winding anti - detachment wings 6 located at both ends of the winding skeleton 2 provide anti - detachment protection for the winding 16, that is, the winding 16 is wound around the winding skeleton 2 and is located between the winding anti - detachment wings at both ends.

[0027] A magnetic core 5 is also installed on the winding skeleton 2. The magnetic core 5 includes a magnetic column that can pass through the internal perforation of the winding skeleton 2, and a connecting frame located outside the winding skeleton 2 and connected to the magnetic column. The connecting frame horizontally surrounds the winding skeleton 2 for one week, and both ends of the magnetic column are connected to the connecting frame.

[0028] The magnetic core 5 is divided into a left magnetic core and a right magnetic core, and the magnetic core 5 is obtained by joining the left magnetic core and the right magnetic core. The left magnetic core is composed of the left part of the connecting frame and the left end of the magnetic column, and the right magnetic core is composed of the right part of the connecting frame and the right end of the magnetic column.

[0029] Before installing the magnetic core 5, the left magnetic core and the right magnetic core are independent and separated from each other. After the left magnetic core and the right magnetic core are installed on the winding skeleton 2, the left magnetic core and the right magnetic core can be joined to form the magnetic core 5 by means of winding an insulating tape, dispensing glue, etc.

[0030] An SMT grasping flat cover for assisting the SMT automation equipment to grasp is detachably installed on the winding anti - detachment wing 6.

[0031] In some embodiments, at least one set of engaging seats is connected to the side of the winding anti - detachment wing 6 far from the winding 16. Each set of engaging seats includes 2 engaging seats 7 spaced front and back.

[0032] The engaging seat 7 is formed and connected to the upper anti - detachment wing of the winding anti - detachment wing 6. The top side of the engaging seat 7 is lower than the top side of the upper anti - detachment wing. A first tenon 11 protrudes upward from the part of the top side of the engaging seat 7 far from the upper anti - detachment wing, and a first mortise 12 is formed between the first tenon 11 and the upper anti - detachment wing.

[0033] A second tenon 13 corresponding to the first mortise 12 is formed on the bottom side of the SMT grasping flat cover 1. A reinforcing convex column 14 is also formed on the bottom side of the SMT grasping flat cover 1. The reinforcing convex column 14 and the second tenon 13 are spaced apart, and a second mortise 15 corresponding to the first tenon 11 is formed between the reinforcing convex column 14 and the second tenon 13.

[0034] A first abutting slope 701 is arranged on the side of the engagement seat 7 away from the upper anti-slip wing, and the first abutting slope 701 is arranged to be gradually inclined from top to bottom along the direction away from the upper anti-slip wing; a second abutting slope 1401 corresponding to the first abutting slope 701 is arranged on the bottom side of the reinforcing boss 14.

[0035] like Figure 3 As shown, after the first tenon 11 and the second tenon groove 15 are mortised, and the first abutting inclined surface 701 and the second abutting inclined surface 1401 are abutted against each other, the reinforcing boss 14 and the engaging seat 7 form a right angle seat.

[0036] An insertion gap 8 is formed between the two engagement seats 7 of each group of engagement seats.

[0037] The bottom side of the SMT grab flat cover 1 is formed with a guide post 9 which can be inserted into the plug-in gap 8 from top to bottom and corresponds to the joint seat 7 one by one. When the guide post 9 is inserted into the plug-in gap 8, the guide post 9 is also close to or near the upper anti-slip wing and close to or near a side surface of the joint seat 7 corresponding to the plug-in gap 8.

[0038] The guide post 9 is an elastic guide post with elastic bending characteristics. The lower end of the guide post 9 is lower than the reinforcing protrusion 14 and the second tenon 13.

[0039] A block 10 is formed on the lower end of the guide post 9 on a side opposite to the engagement seat 7, and the block 10 is combined with the guide post 9 to form a hook-shaped structure. After being plugged in place, the block 10 is used to abut against the bottom side of the engagement seat 7.

[0040] The card block 10 has an insertion guide slope 1001. When the guide column 9 is inserted into the insertion gap 8 and the first tenon 11 is mortised with the second tenon groove 15: the insertion guide slope 1001 of the card block 10 first abuts against a side surface of the coupling seat 7 corresponding to the insertion gap 8, and in the process of the guide column 9 being continuously inserted downward, the coupling seat 7 pushes the card block 10 to make the guide column 9 elastically bend toward the insertion gap 8, and when the card block 10 moves down to below the bottom side of the coupling seat 7, the guide column 9 performs elastic deformation recovery to drive the card block 10 to move to the bottom side of the coupling seat 7, thereby forming an abutment limit between the card block 10 and the bottom side of the coupling seat 7 to limit the guide column 9 from slipping out of the insertion gap 8 upward.

[0041] There are at least 4 engagement seats 7 located at the left and right ends of the winding skeleton 2, and at least 4 guide pillars 9 located at the bottom side of the SMT grabbing flat cover 1, so that after plugging in, the SMT grabbing flat cover 1 is not easy to shift in the horizontal direction; through the clamping block 10 and the guide pillars 9 with elastic bending characteristics, the SMT grabbing flat cover 1 can be plugged in through the guide pillars 9 to achieve the functions of clamping retention and detachability, and the functionality is better.

[0042] After installing the SMT grasping flat cover 1, the tenon joint of the first tenon 11 and the second mortise 15, the tenon joint of the second tenon 13 and the first mortise 12, and the abutting fit of the first abutting inclined surface 701 and the second abutting inclined surface 1401 are simultaneously formed, making the connection between the SMT grasping flat cover 1 and the winding anti-disengagement wing 6 more stable. The SMT grasping flat cover 1 is not easily damaged and dropped by external forces and can be used as a good winding protection structural member at the same time.

[0043] Preferably, when the guide post 9 is inserted into the insertion gap 8, the position of the first mortise 12 corresponds to the block 10, forming an avoidance position for the block 10, making it more convenient for the lower end of the guide post 9 to enter the insertion gap 8.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention 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 embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

Claims

1. A transformer suitable for being picked and placed by SMT automation equipment, characterized in that, It includes an SMT grasping flat cover and a horizontally arranged winding skeleton. Both the left and right ends of the winding skeleton have insulating bases, and PIN feet are arranged on the insulating bases. A winding is wound around the winding skeleton, and at least part of the leads of the winding are led out and connected to the PIN feet located on the insulating bases. A magnetic core is installed on the winding skeleton; Winding anti-disengagement wings are further formed by extending at both the left and right ends of the winding skeleton. At least one set of engaging seats is connected to the side of the winding anti-disengagement wings far from the winding. Each set of engaging seats includes 2 engaging seats spaced front and back. An insertion gap is formed between the 2 engaging seats of each set of engaging seats. Guide posts that can be inserted into the insertion gap from top to bottom and correspond to the engaging seats one by one are formed on the bottom side of the SMT grasping flat cover; The lower ends of the guide posts are lower than the bottom sides of the engaging seats. When the guide posts are inserted into the insertion gap, the guide posts are close to or adjacent to the winding anti-disengagement wings and the side surface of the engaging seat corresponding to the insertion gap; The guide posts are elastic guide posts with elastic bending characteristics. A clamping block is formed on the side of the lower end of the guide post opposite to the engaging seat. After the insertion is in place, the clamping block constitutes a butt-joint fit with the bottom side of the engaging seat.

2. The transformer according to claim 1, characterized in that, The clamping block has an insertion guiding inclined surface that cooperates with the side surface of the engaging seat corresponding to the insertion gap.

3. The transformer according to claim 1 or 2, characterized in that, The top side of the engaging seat is lower than the top side of the winding anti-disengagement wing; A first tenon protrusion is formed by upward protrusion at the part of the top side of the engaging seat far from the winding anti-disengagement wing, and a first tenon groove is formed between the first tenon protrusion and the winding anti-disengagement wing; A second tenon protrusion corresponding to the first tenon groove is formed on the bottom side of the SMT grasping flat cover; Reinforcing convex columns are also formed on the bottom side of the SMT grasping flat cover. The reinforcing convex columns are arranged at intervals with the second tenon protrusion, and a second tenon groove corresponding to the first tenon protrusion is formed between the reinforcing convex columns and the second tenon protrusion.

4. The transformer according to claim 3, characterized in that, A first abutting inclined surface is arranged on the side of the engaging seat far from the winding anti-disengagement wing. The first abutting inclined surface is arranged to gradually incline downward from top to bottom along the direction away from the winding anti-disengagement wing; A second abutting inclined surface corresponding to the first abutting inclined surface is arranged on the bottom side of the reinforcing convex column.

5. The transformer according to claim 1, characterized in that, The magnetic core includes a magnetic column that can pass through the internal through hole of the winding skeleton and a connecting frame located outside the winding skeleton and connected to the magnetic column.

6. The transformer according to claim 1, characterized in that, Multiple protrusions and / or grooves are also arranged on the insulating base.

7. The transformer according to claim 1, characterized in that, The winding anti-disengagement wings include a front anti-disengagement wing arranged on the front side of the end of the winding skeleton, an upper anti-disengagement wing arranged on the upper side of the end of the winding skeleton, and a rear anti-disengagement wing arranged on the rear side of the end of the winding skeleton.

Images