CN219811391U - Transformer cushion block and transformer clamping structure - Google Patents

Abstract

The utility model discloses a transformer cushion block which comprises a cushion block body and connecting terminals. The connecting terminal is at least partially arranged in the cushion block body, and the outer end of the connecting terminal is provided with a threaded hole. Wherein, connecting terminal and cushion body integral type are connected. In the structure, the connecting terminal is arranged in the cushion block body, the threaded hole is formed in the outer end of the connecting terminal, the threaded hole of the connecting terminal is aligned with the fastener on the clamping piece during installation, the fastener on the clamping piece is installed in the threaded hole of the connecting terminal in a threaded mode, and therefore the cushion block body and the clamping piece can be connected together. Because connecting terminal is connected with the cushion body is integrative, and then can make the connection between cushion body and the folder more firm, prevent to appear skew or dislocation between the two. In addition, the utility model also discloses a transformer clamping structure with the transformer cushion block.

Description

Transformer cushion block and transformer clamping structure

Technical Field

The utility model relates to the technical field of transformers, in particular to a transformer cushion block and a transformer clamping structure.

Background

During assembly of the transformer, the coil needs to be assembled into the housing of the transformer. When the coil is assembled, the coil is axially clamped outside the transformer through the upper clamping piece and the lower clamping piece, a cushion block is arranged between the upper clamping piece and the coil and between the lower clamping piece and the coil, a bolt fastener is arranged on the clamping piece, one end of the bolt fastener applies a pressing force to the cushion block, and the acting area of the pressing force between the clamping piece and the coil can be enlarged by the cushion block. However, the transformer is easy to vibrate or shake in the transportation process, so that the cushion blocks and the bolts and the cushion blocks and the clamping pieces are easy to deviate or misplace, and further the coil and the clamping pieces are easy to deviate or misplace, and the clamping and fixing of the clamping pieces to the coil are affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the transformer cushion block provided by the utility model can improve the connection stability with the clamping piece and is convenient for clamping the coil.

The utility model further provides a transformer clamping structure with the transformer cushion block.

According to an embodiment of the utility model, a transformer pad includes: a cushion block body; the connecting terminal is at least partially arranged in the cushion block body, and the outer end of the connecting terminal is provided with a threaded hole; wherein, connecting terminal with the cushion body is connected in an integral type.

The transformer cushion block provided by the embodiment of the utility model has at least the following beneficial effects:

in the structure, the connecting terminal is arranged in the cushion block body, the threaded hole is formed in the outer end of the connecting terminal, the threaded hole of the connecting terminal is aligned with the fastener on the clamping piece during installation, the fastener on the clamping piece is installed in the threaded hole of the connecting terminal in a threaded mode, and therefore the cushion block body and the clamping piece can be connected together, and offset or dislocation between the cushion block body and the clamping piece is prevented. In addition, because connecting terminal is connected with the cushion body is integral type, and then can make the connection between cushion body and the folder more firm, be favorable to pressing from both sides tightly fixedly to the coil.

According to some embodiments of the utility model, the pad body has a first abutment surface, and the connection terminal is mounted inside the pad body and extends to the first abutment surface.

According to some embodiments of the utility model, the number of the connection terminals is at least two, and all the connection terminals are mounted on the cushion block body at intervals.

According to some embodiments of the utility model, the inner end of the connecting terminal is provided with a groove, and the cushion block body part is embedded in the groove.

According to some embodiments of the utility model, the pad body has a receiving hole for receiving the connection terminal, and the outer peripheral wall of the connection terminal is provided with a protruding portion, and the protruding portion is embedded in the peripheral wall of the receiving hole.

According to some embodiments of the utility model, the pad body is an epoxy casting.

According to some embodiments of the utility model, the peripheral wall of the pad body is provided with a plurality of bar-shaped grooves arranged along the circumferential direction of the pad body, and all the bar-shaped grooves are arranged at intervals along the height direction of the pad body.

According to some embodiments of the utility model, the pad body has a second abutment surface for abutting against the coil, and the second abutment surface is provided with a positioning groove for fixing the coil.

According to some embodiments of the utility model, the spacer body has a first abutment surface for abutting a clip, the first abutment surface being located at an end of the spacer body facing away from the second abutment surface, the second abutment surface having a cross-sectional area greater than a cross-sectional area of the first abutment surface.

A transformer clamping structure according to an embodiment of the present utility model includes: a clamping piece; the transformer pad of any one of the above embodiments, wherein the threaded hole of the connection terminal faces the clip; the clamping piece is provided with a mounting hole corresponding to the threaded hole, a fastener is mounted in the mounting hole, one end of the fastener is abutted to the clamping piece, and the other end of the fastener is mounted in the threaded hole in a threaded mode.

The transformer clamping structure provided by the embodiment of the utility model has at least the following beneficial effects:

through setting up the transformer cushion of any of the above-mentioned embodiments, the cushion body can be connected with the folder through the screw hole on the connecting terminal. In this structure, because connecting terminal is connected with the cushion body is integral type, and then can make the connection between cushion body and the folder more firm, when the transformer takes place to rock or shake in the transportation, be difficult to take place the skew dislocation between cushion body and the folder, the coil that can be fine presss from both sides tightly fixedly for the coil is difficult to take place the skew or misplacement in the transportation.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a transformer pad according to an embodiment of the present utility model;

FIG. 2 is another schematic view of the transformer pad of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the transformer pad of FIG. 1;

fig. 4 is a schematic view of a connection terminal according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of the connection terminal of FIG. 4;

FIG. 6 is a schematic view of a transformer clamping structure of the present utility model;

fig. 7 is a schematic cross-sectional view of a transformer clamping structure of the present utility model.

Reference numerals:

the cushion block comprises a cushion block body 100, a first abutting surface 110, a second abutting surface 120, a strip-shaped groove 130 and a positioning groove 140;

connection terminal 200, screw hole 210, recess 220, boss 230;

clip 300, fastener 310;

a coil 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 7, an embodiment of the present utility model provides a transformer pad including a pad body 100 and connection terminals 200. The connection terminal 200 is at least partially mounted inside the pad body 100, and a threaded hole 210 is formed at the outer end of the connection terminal 200. Wherein, the connection terminal 200 is integrally connected with the pad body 100.

In the above structure, by providing the connection terminal 200 in the pad body 100, the threaded hole 210 is formed at the outer end of the connection terminal 200, and when the pad is mounted, the threaded hole 210 of the connection terminal 200 is aligned with the fastening piece 310 on the clip 300, and the fastening piece 310 on the clip 300 is screwed into the threaded hole 210 of the connection terminal 200, thereby connecting the pad body 100 and the clip 300 together. Because connecting terminal 200 is connected with cushion body 100 is whole, and then can make the connection between cushion body 100 and the folder 300 more firm, when the transformer takes place to rock or shake in the transportation, be difficult to take place the skew dislocation between cushion body 100 and the folder 300, can be fine press from both sides tightly fixedly coil 400 for coil 400 is difficult to take place the skew or dislocation in the transportation.

It may be appreciated that the above connection terminal 200 is integrally connected with the pad body 100, specifically, the connection terminal 200 may be embedded into the pad body 100 and integrally connected with the pad body 100 when the pad body 100 is formed, or a mounting hole may be formed on the surface of the pad body 100, the connection terminal 200 may be placed in the mounting hole, and then glue is applied between the outer wall of the connection terminal 200 and the inner wall of the mounting hole, so that the connection terminal 200 is integrally connected with the pad body 100.

It can be appreciated that the connection terminal 200 is at least partially installed inside the pad body 100, wherein the connection terminal 200 may be completely installed inside the pad body 100, and at this time, a relief hole corresponding to the threaded hole 210 of the connection terminal 200 needs to be formed on the surface of the pad body 100, so that the fastener 310 on the clip 300 can be installed in the threaded hole 210 of the connection terminal 200 through the relief hole. Alternatively, the connection terminal 200 may have one end located inside the pad body 100 and the other end extending to the outside of the pad body 100, which is not particularly limited in the present utility model.

It can be understood that the transformer cushion block of the embodiment of the utility model can be used as an upper cushion block and also can be used as a lower cushion block, and the transformer cushion block is specifically selected according to actual conditions.

Referring to fig. 1 to 3, in some embodiments, the pad body 100 has a first abutment surface 110, and the connection terminal 200 is mounted inside the pad body 100 and extends to the first abutment surface 110.

In the above structure, in use, the first abutment surface 110 of the pad body 100 is abutted against the clip 300, and then the connection terminal 200 is connected with the fastener 310 on the clip 300. Through installing connecting terminal 200 in the inside of cushion body 100 and extending to first butt face 110, compare in connecting terminal 200 installs completely in cushion body 100 inside, this embodiment need not to offer the hole of stepping down corresponding with connecting terminal 200's screw hole 210 at first butt face 110, can be convenient for connect integrally between connecting terminal 200 and the cushion body 100 from this for transformer cushion's production and processing is more convenient. Meanwhile, compared to the connection terminal 200 having one end located inside the pad body 100 and the other end extending outside the pad body 100, the connection terminal 200 of the embodiment of the utility model is mounted inside the pad body 100 and extends to the first abutment surface 110, so that the connection terminal 200 is not easy to break away from connection with the pad body 100 under the action of external force, i.e. the connection stability between the connection terminal 200 and the pad body 100 can be improved.

Referring to fig. 1 to 3, in some embodiments, the number of the connection terminals 200 is two, and two connection terminals 200 are installed at a space to the pad body 100.

In the above structure, by installing two connection terminals 200 in the spacer body 100 at intervals, the connection stability between the spacer body 100 and the clip 300 can be further improved, and offset dislocation between the spacer body 100 and the clip 300 due to vibration or shaking is avoided, so that the coil 400 can be better clamped and fixed.

It is understood that the number of the above-described connection terminals 200 is two, and only one exemplary description is given to fig. 1 to 3. In order to further improve the connection stability between the pad body 100 and the clip 300, the number of the connection terminals 200 may be two, three, four or more, which is not particularly limited, and it is only necessary to ensure that all the connection terminals 200 are mounted on the pad body 100 at intervals.

Referring to fig. 3 to 5, in some embodiments, the inner end of the connection terminal 200 is provided with a groove 220, and the pad body 100 is partially embedded in the groove 220.

In the above structure, since the connection terminal 200 is integrally connected with the pad body 100, the connection area between the connection terminal 200 and the pad body 100 can be increased by providing the groove 220 at the inner end of the connection terminal 200, so as to further improve the connection stability between the connection terminal 200 and the pad body 100, prevent the dislocation between the pad body 100 and the clip 300, and facilitate the clamping and fixing of the coil 400. In addition, when the connection terminal 200 is inserted into the pad body 100 during the molding of the pad body 100 and integrally connected with the pad body 100, the provision of the recess 220 at the inner end of the connection terminal 200 facilitates filling the pad body 100 in the recess 220.

It will be appreciated that, referring to fig. 3 to 5, in order to avoid the relative rotation between the connection terminal 200 and the pad body 100, the recess 220 may be configured as a oval shape, or may be configured as a polygonal shape or other non-circular shape, which is not particularly limited.

Referring to fig. 3 to 5, in some embodiments, the pad body 100 has a receiving hole for receiving the connection terminal 200, and the outer circumferential wall of the connection terminal 200 is provided with a protrusion 230, and the protrusion 230 is embedded in the circumferential wall of the receiving hole.

In the above-mentioned structure, connecting terminal 200 is connected as an organic whole with cushion body 100 between, and connecting terminal 200 is located the accommodation hole and is connected with the perisporium of accommodation hole is integrative, through set up bellying 230 at connecting terminal 200's inner to inlay bellying 230 in the perisporium of accommodation hole, can increase connecting terminal 200 and cushion body 100 from this and connect the area, further improve connecting terminal 200 and cushion body 100 between connect the steadiness, prevent that cushion body 100 and folder 300 from appearing the dislocation, be favorable to carrying out the clamp to coil 400 and fix. In addition, when the connection terminal 200 is inserted into the pad body 100 during the molding of the pad body 100 and integrally connected with the pad body 100, the protrusion 230 located at the outer circumferential wall of the connection terminal 200 can be completely inserted into the pad body 100, so that the protrusion 230 of the connection terminal 200 is inserted into the circumferential wall of the receiving hole, thereby further preventing the connection terminal 200 from being separated from the pad body 100.

It is understood that the number of the protrusions 230 may be one, or may be two, three or more, which is not particularly limited. When the number of the protruding portions 230 is two or more, all the protruding portions 230 may be arranged at intervals along the circumferential direction of the connection terminal 200.

In some embodiments, the spacer body 100 is an epoxy casting.

In the above structure, by setting the pad body 100 as an epoxy resin casting, that is, the pad body 100 is formed by casting epoxy resin, the connection terminal 200 can be embedded into the pad body 100 when the pad body 100 is cast and molded, that is, the processing and molding of the pad are facilitated. In addition, the cushion block body 100 is arranged as an epoxy resin casting part, so that the cushion block body 100 has excellent mechanical strength and electrical insulation property, is favorable for clamping and fixing the coil 400, and is convenient for insulating between the coil 400 and the clamping piece 300.

Referring to fig. 1 to 3 and fig. 6 and 7, in some embodiments, the outer circumferential wall of the pad body 100 is provided with a plurality of bar grooves 130 arranged along the circumferential direction of the pad body 100, and all the bar grooves 130 are spaced apart in the height direction of the pad body 100.

In the above structure, the arrangement of the plurality of strip-shaped grooves 130 can increase the creepage distance between the coil 400 and the clip 300, and avoid the problem of discharge or breakdown between the coil 400 and the clip 300.

Referring to fig. 1 to 3 and fig. 6 and 7, in some embodiments, the pad body 100 has a second abutment surface 120 for abutting against the coil 400, and the second abutment surface 120 is provided with a positioning groove 140 for fixing the coil 400.

In the above-mentioned structure, the positioning groove 140 is formed in the second contact surface 120, so that the connection terminal 200 on the pad body 100 is connected to the clip 300 when in use, and then the insulating cylinder of the coil 400 is locked into the positioning groove 140 on the second contact surface 120. The positioning groove 140 not only can position the coil 400, but also is beneficial to clamping and fixing the coil 400, and further prevents the coil 400 from being shifted or misplaced in the transportation process.

Referring to fig. 1-3, in some embodiments, the spacer body 100 has a first abutment surface 110 for abutment with the clip 300, the first abutment surface 110 is located at an end of the spacer body 100 facing away from the second abutment surface 120, and the cross-sectional area of the second abutment surface 120 is greater than the cross-sectional area of the first abutment surface 110.

In the above-mentioned structure, when the pad is used, the first abutting surface 110 of the pad body 100 abuts against the clip 300 and is connected with the clip 300 through the connection terminal 200, the second abutting surface 120 of the pad body 100 faces the coil 400 and abuts against the coil 400, and the cross-sectional area of the second abutting surface 120 is larger than that of the first abutting surface 110, so that the acting area between the clip 300 and the coil 400 can be further increased, and meanwhile, the material can be saved to a certain extent, and the production cost of the transformer pad can be further saved.

Referring to fig. 6 and 7, the present utility model further provides a transformer clamping structure, which includes a clamping member 300 and the transformer pad of any of the above embodiments, wherein the threaded hole 210 of the connection terminal 200 faces the clamping member 300, the clamping member 300 is provided with a mounting hole corresponding to the threaded hole 210, a fastener 310 is installed in the mounting hole, one end of the fastener 310 abuts against the clamping member 300, and the other end is threadedly installed in the threaded hole 210.

In the above-described structure, by providing the transformer pad of any of the above embodiments, the pad body 100 may be connected to the clip 300 through the screw hole 210 of the connection terminal 200, that is, the screw hole 210 of the connection terminal 200 is aligned with the mounting hole of the clip 300, and then the fastener 310 of the clip 300 is screw-mounted in the screw hole 210 of the connection terminal 200. In this structure, because connecting terminal 200 is connected with cushion body 100 an organic whole, and then can make the connection between cushion body 100 and the folder 300 more firm, when the transformer takes place to rock or shake in the transportation, be difficult to take place the skew dislocation between cushion body 100 and the folder 300, can be fine press from both sides tightly fixedly to coil 400 for coil 400 is difficult to take place the skew or dislocation in the transportation.

It will be appreciated that the fastener 310 may be a bolt fastener or a screw fastener, which is not particularly limited to the present utility model.

It will be appreciated that referring to fig. 6 and 7, a plurality of transformer pads may be connected to one clip 300 at intervals, thereby facilitating the production process of the clip 300 and improving the production efficiency. In addition, in order to improve stability of clamping fixation of the coil 400, two clamps 300 arranged side by side may be provided, the coil 400 being placed between the two clamps 300

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. Transformer cushion, its characterized in that includes:

a pad body (100);

the connecting terminal (200) is at least partially arranged in the cushion block body (100), and a threaded hole (210) is formed in the outer end of the connecting terminal (200);

wherein, the connecting terminal (200) is integrally connected with the cushion block body (100).

2. The transformer spacer block of claim 1, wherein the spacer block body (100) has a first abutment surface (110), and the connection terminal (200) is mounted inside the spacer block body (100) and extends to the first abutment surface (110).

3. The transformer pad according to claim 2, wherein the number of the connection terminals (200) is at least two, and all the connection terminals (200) are mounted to the pad body (100) at intervals.

4. A transformer pad according to any one of claims 1 to 3, wherein the inner end of the connection terminal (200) is provided with a groove (220), and the pad body (100) is partially embedded in the groove (220).

5. A transformer pad according to any one of claims 1 to 3, wherein the pad body (100) has a receiving hole for receiving the connection terminal (200), the outer peripheral wall of the connection terminal (200) is provided with a protruding portion (230), and the protruding portion (230) is embedded in the peripheral wall of the receiving hole.

6. The transformer spacer of claim 1, wherein the spacer body (100) is an epoxy casting.

7. The transformer spacer according to claim 1, wherein the outer peripheral wall of the spacer body (100) is provided with a plurality of strip-shaped grooves (130) arranged along the circumferential direction of the spacer body (100), and all the strip-shaped grooves (130) are arranged at intervals along the height direction of the spacer body (100).

8. The transformer spacer block according to claim 1, wherein the spacer block body (100) has a second abutment surface (120) for abutting against the coil (400), and the second abutment surface (120) is provided with a positioning groove (140) for fixing the coil (400).

9. The transformer spacer block of claim 8, wherein the spacer block body (100) has a first abutment surface (110) for abutting a clip (300), the first abutment surface (110) being located at an end of the spacer block body (100) facing away from the second abutment surface (120), the second abutment surface (120) having a cross-sectional area greater than a cross-sectional area of the first abutment surface (110).

10. Transformer clamping structure, its characterized in that includes:

a clip (300);

the transformer pad of any of claims 1 to 9, the threaded bore (210) of the connection terminal (200) being directed towards the clip (300);

the clamping piece (300) is provided with a mounting hole corresponding to the threaded hole (210), a fastener (310) is mounted in the mounting hole, one end of the fastener (310) is abutted to the clamping piece (300), and the other end of the fastener is mounted in the threaded hole (210) in a threaded mode.