Rotary transformer framework

Abstract

The utility model discloses a rotary transformer framework which comprises an annular main body and a PIN needle connecting part arranged on the periphery of the annular main body in a protruding mode. The PIN connecting part is provided with a PCB (Printed Circuit Board) groove, and the PCB groove is used for accommodating a PCB; the PCB is provided with PIN holes which allow the PINs to penetrate through and are in close fit with the PINs, and through holes which allow the PINs to penetrate through are formed in the positions, corresponding to the PIN holes, of the bottom of the PCB groove. The PINs are connected through the PCB, the connection reliability of the PINs is improved, the injection molding cost is reduced, and the problems that the PINs are prone to skew and dislocation due to the fact that the PINs are placed in a mold and connected with the upper framework in an integrated injection molding mode, the PINs touch one another, and the PINs are short-circuited and even crushed are solved.

Description

Technical Field

[0001] The utility model relates to a resolver, in particular to an upper skeleton of the resolver and a PIN pin connection design, belonging to the technical field of electronic components. Background Art

[0002] During the manufacturing process of the existing resolver, its insulating skeleton is connected with PIN pins by injection molding. However, during injection molding, six PIN pins (one PIN pin is respectively connected to the head and tail of the exciting, sine, and cosine three groups of coils) need to be put into the mold one by one, and then the skeleton is injection molded. The defect of this method is that single PIN pins are prone to skew and dislocation during mold closing, resulting in the PIN pins touching each other, causing PIN pin short circuit, and even crushing the PIN pins. Content of the Utility Model

[0003] In view of this, the utility model improves the upper skeleton of the resolver and cancels the one-piece injection molding connection method between the upper skeleton and the PIN pins to solve the problems of easy PIN short circuit and mold crushing of PIN pins during the injection molding of the skeleton in the prior art.

[0004] The technical solution proposed by the utility model to solve the above problems is as follows:

[0005] A resolver skeleton includes an annular main body and a PIN pin connection part protruding from the outer periphery of the annular main body; a PCB board groove is provided in the PIN pin connection part for accommodating a PCB board; PIN pin holes are formed in the PCB board for the PIN pins to pass through and are in tight fit with the PIN pins, and through holes for the PIN pins to pass through are formed at the bottom of the PCB board groove corresponding to the positions of the PIN pin holes.

[0006] Further, positioning columns are provided at the bottom of the PCB board groove, and positioning holes adapted to the positioning columns are formed on the PCB board. The PCB board is positioned by inserting the positioning columns into the positioning holes.

[0007] Further, the height of the positioning column is greater than or equal to the thickness of the PCB board.

[0008] Further, the PCB board groove is arranged on the front surface of the PIN pin connection part, and a PIN pin rubber sleeve for supporting the PIN pins and preventing the PIN pins from skewing is arranged on the back surface. Since the PIN pins heat up quickly during the welding process with the PCB board and are prone to skew, the PIN pins are lengthened, and at the same time, a rubber sleeve is designed to make the lengthened PIN pins more firmly fixed.

[0009] Further, the PIN pins are inserted into the PIN pin holes and soldered.

[0010] Further, electronic circuits are printed on the PCB board, and the electronic circuits are used to connect the PIN pins and the electronic wires.

[0011] Further, the PIN pins are inserted into the PIN pin holes to achieve connection with the electronic circuits.

[0012] Further, welding holes for welding the electronic wires are also provided on the PCB board.

[0013] Compared with the prior art, the beneficial effects of the technical solution of the present utility model are as follows: The middle of the PIN pins is connected by a PCB board, canceling the original one-piece injection molding connection method between the upper skeleton and the PIN pins, overcoming the problems that single PIN pins are prone to skew and misalignment during mold clamping in the one-piece injection molding connection, resulting in the PIN pins touching each other and causing short circuits of the PIN pins, or even crushing the PIN pins, reducing the injection molding cost of the product, and improving the connection reliability of the PIN pins and the product consistency. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the upper skeleton of the resolver in the embodiment of the present utility model.

[0015] Figure 2 is a side view of the upper skeleton of the resolver in the embodiment of the present utility model.

[0016] Figure 3 is an exploded view of the structure of a resolver in the embodiment of the present utility model.

[0017] Description of the reference numerals: 100 - lower protective cover, 110 - lower skeleton, 120 - stator, 130 - upper skeleton, 140 - PCB board, 141 - PIN pin hole, 142 - positioning hole, 143 - welding hole, 150 - PIN pin, 160 - upper protective cover, 170 - rotor, 180 - positioning post, 190 - PIN pin rubber sleeve. Detailed Embodiments

[0018] The present utility model will be further described below with reference to the drawings, specific embodiments, and examples. The purpose of providing the examples is only for illustration and not for any limitation.

[0019] An embodiment of the present utility model provides a resolver. Referring to Figure 3 , the resolver includes: a lower protective cover 100, a lower skeleton 110, a stator 120, an upper skeleton 130, a PCB board 140, PIN pins 150, an upper protective cover 160, and a rotor 170; the upper skeleton 130 is docked with the lower skeleton 110 and assembled with the stator 120 at the same time, the lower protective cover 100 is assembled on the lower skeleton 110, the upper protective cover 160 is assembled on the upper skeleton 130, and the rotor 170 is assembled in the inner ring of the stator 120.

[0020] Reference Figures 1 to 3 , in the upper skeleton 130 of the embodiment of the present utility model, it includes an annular main body and a PIN pin connection part protruding from the outer periphery of the annular main body. A PCB board groove 200 is recessed on the front surface of the PIN pin connection part, and the PCB board groove 200 is used to accommodate the PCB board 140; the PCB board 140 is provided with PIN pin holes 141 through which the PIN pins 150 can pass and can be tightly fitted with the PIN pins 150; through holes for the PIN pins to pass through are provided at the bottom of the PCB board groove 200 corresponding to the positions of the PIN pin holes 141. In the resolver of this embodiment, the number of PIN pins is 6. Correspondingly, the number of PIN pin holes 141 on the PCB board and the number of through holes at the bottom of the PCB board groove are both 6. In addition, welding holes 143 for welding electronic wires are also provided on the PCB board 140. The electronic wires are wires used to connect to external circuits, and similarly, there are also 6 holes. The PIN pins 150 are sequentially inserted into the PIN pin holes of the PCB board and the through holes at the bottom of the groove, reaching the back surface of the PIN pin connection part, as Figure 2 shown. The PIN pins are inserted into the PIN pins of the PCB board and soldered. The 6 lead-out ends of the three windings of the resolver are respectively wound around 6 PIN pins one by one. At the same time, the 6 PIN pins are respectively connected to 6 electronic circuits printed on the PCB board, and the 6 electronic circuits are respectively connected to the 6 welded electronic wires one by one.

[0021] In some preferred embodiments, positioning posts 180 are provided at the bottom of the PCB board groove 200. At the same time, positioning holes 142 adapted to the positioning posts are provided on the PCB board 140. The positioning of the PCB board is achieved by inserting the positioning posts into the positioning holes. Preferably, the height of the positioning posts 180 is greater than or equal to the thickness of the PCB board.

[0022] In some embodiments of the present utility model, since there is welding between the PIN pins and the PCB board, during the welding process, the PIN pins heat up quickly and are prone to skew. Therefore, the PIN pins are lengthened. For this reason, a PIN pin rubber sleeve 190 is designed on the back surface of the PIN pin connection part (see Figure 1 and Figure 3 ) to stabilize the PIN pins and make the lengthened PIN pins more firmly fixed.

[0023] In the resolver of the embodiment of the present utility model, the connection and fixing method of the PIN pins has been improved and designed, overcoming the problems of easy skew, damage, and short circuit of the PIN pins caused by the original method of putting single PIN pins into the mold and integrally injection-molding and connecting with the upper skeleton.

[0024] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those skilled in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several equivalent substitutions or obvious modifications can be made, and as long as the performance or use is the same, they should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. A resolver skeleton, characterized in that: It includes an annular body and a PIN pin connection part convexly arranged on the outer periphery of the annular body; the PIN pin connection part is provided with a PCB board slot for accommodating a PCB board; the PCB board is provided with PIN pin holes for the PIN pins to pass through and tightly fit with the PIN pins, and through holes for the PIN pins to pass through are provided at the bottom of the PCB board slot corresponding to the positions of the PIN pin holes.

2. The resolver skeleton according to claim 1, wherein: Positioning posts are provided at the bottom of the PCB board slot, and positioning holes adapted to the positioning posts are provided on the PCB board. The positioning of the PCB board is realized by inserting the positioning posts into the positioning holes.

3. The resolver skeleton according to claim 2, characterized in that: The height of the positioning posts is greater than or equal to the thickness of the PCB board.

4. The resolver skeleton according to claim 1, wherein: The PCB board slot is arranged on the front surface of the PIN pin connection part, and a PIN pin rubber sleeve for supporting the PIN pins and preventing the PIN pins from skewing is arranged on the back surface.

5. The resolver skeleton according to claim 1, characterized in that: The PIN pins are inserted into the PIN pin holes and soldered.

6. The resolver skeleton according to claim 1, wherein: Electronic circuits are printed on the PCB board, and the electronic circuits are used to connect the PIN pins and electronic wires.

7. The resolver skeleton according to claim 6, characterized in that: The PIN pins are inserted into the PIN pin holes to realize connection with the electronic circuits.

8. The resolver skeleton according to claim 6, wherein: Welding holes for welding the electronic wires are also provided on the PCB board.

Images