Positioning tool for secondary terminal of current transformer

Abstract

The utility model relates to a positioning tool for a secondary terminal of a current transformer. The positioning tool is detachably arranged on a transformer shell; the mutual inductor shell comprises an outer shell and an inner cylinder, and the inner cylinder in the outer shell is a circular cylinder; the positioning tool comprises a clamping piece and a positioning piece; an inserting part is arranged at the bottom of the clamping piece, and is inserted and aligned to the top opening of the inner barrel; an adjusting arm is arranged at the inner end of the positioning piece and can drive the positioning piece to move inwards and outwards and be fixed to the top of the clamping piece in a sliding mode, and a plurality of positioning holes are formed in the left side or the right side of the outer end of the positioning piece; and a positioning screw penetrates through the positioning hole and is used for locking the secondary terminal arranged below the positioning piece. Therefore, the secondary terminal can be locked and suspended in the mutual inductor shell below the positioning tool, the secondary terminal can be conveniently fixed during pouring, the fixing effect is better, and the production efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mutual inductor production, in particular to a current mutual inductor secondary terminal positioning tool. BACKGROUND

[0002] In the assembly of the current mutual inductor, the coil is usually fixed in the mutual inductor shell by resin pouring, and in the mutual inductor assembled by this method, the secondary terminal needs to be bonded with the mutual inductor shell by glue, but this bonding method has certain defects, such as the worker needs to press the contact surface for a long time until the secondary terminal is bonded firmly, and the production efficiency is low; when the bonding is not in place, the secondary terminal will be poured obliquely, affecting the normal use of the product. UTILITY MODEL CONTENTS

[0003] The utility model discloses a current mutual inductor secondary terminal positioning tool, which has the advantages of convenient positioning of the secondary terminal and improved pouring production efficiency.

[0004] In order to achieve the above purpose, the solution of the utility model is as follows:

[0005] A current mutual inductor secondary terminal positioning tool, which is detachably installed on the mutual inductor shell.

[0006] The mutual inductor shell comprises an outer shell and an inner cylinder, and the inner cylinder inside the outer shell is a circular cylinder.

[0007] The positioning tool comprises a clamping piece and a positioning piece.

[0008] The clamping piece has a plug-in part at the bottom, and the plug-in part is plugged into the opening at the top of the inner cylinder.

[0009] The inner end of the positioning piece has an adjusting arm, which can drive the positioning piece to move in and out and is fixed to the top of the clamping piece by sliding, and the left side or the right side of the outer end of the positioning piece has a plurality of positioning holes; a positioning screw is arranged in the positioning hole, and the positioning screw is used to lock the secondary terminal arranged below the positioning piece.

[0010] Further, the left and right sides of the outer end of the positioning piece each have a plurality of positioning holes.

[0011] Further, a slot is arranged between the adjacent positioning holes on the same side; the adjacent terminal holes of the secondary terminal have an upwardly protruding plug-in plate, and the plug-in plate is located in the slot.

[0012] Further, the slot is connected to the side edge on the same side of the positioning piece.

[0013] Further, the shell has at least one plane side wall; the outer end of the positioning member has a downward extending abutting portion, and the bottom of the abutting portion has a step which is clamped to the top edge of the plane side wall.

[0014] Further, the shell includes an arc-shaped side wall and three plane side walls which are sequentially and perpendicularly connected to the left, middle and right of the opening of the arc-shaped side wall; the step is clamped to the middle plane side wall.

[0015] Further, the adjusting arm is provided with an inner and outer extending adjusting long slot hole, the top of the clamping member has an adjusting lock hole, and the adjusting long slot hole is provided with an adjusting screw which is movably locked in the adjusting lock hole.

[0016] After the above technical scheme is adopted, the positioning tool has the clamping member which can be inserted and fixed to the top of the inner cylinder, so that the positioning tool as a whole is located above the mutual inductor shell, the positioning member of the positioning tool is provided with a positioning hole, the secondary terminal is locked and hung in the mutual inductor shell below the positioning tool by the positioning hole and the positioning screw, the secondary terminal is fixed at the predetermined position during pouring, and the positioning tool is more convenient to use and has better fixing effect, so that the production efficiency is effectively improved. After pouring is completed, the positioning tool can be conveniently removed and reused. Moreover, the adjusting arm at the inner end of the positioning member can move along the inner and outer of the clamping member, so that the position of the outer end of the positioning member can be adjusted, the outer end of the positioning member of the positioning tool can be finely adjusted for mutual inductor shells of different sizes, and the versatility of the positioning tool is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a perspective view of the utility model embodiment and the mutual inductor shell;

[0018] Fig. 2 It is an exploded view of the utility model embodiment and the mutual inductor shell;

[0019] Fig. 3 It is a top view of the utility model embodiment and the mutual inductor shell.

[0020] Label explanation: positioning tool 10, clamping member 11, insertion part 111, positioning member 12, adjusting arm 121, positioning hole 122, positioning screw 123, adjusting long slot hole 124, adjusting screw 125, insertion slot 126, abutting portion 127, step 128, mutual inductor shell 20, shell 21, plane side wall 211, arc-shaped side wall 212, inner cylinder 22, top opening 221, secondary terminal 30, terminal hole 31, insertion plate 32. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] like Figs. 1 to 3 As shown, a positioning fixture 10 for the secondary terminals of a current transformer is provided. The positioning fixture 10 is detachably installed on the transformer housing 20. The transformer housing 20 includes an outer shell 21 and an inner cylinder 22. The inner cylinder 22 inside the outer shell 21 is a circular cylinder.

[0023] The positioning fixture 10 includes a snap-fit ​​component 11 and a positioning component 12; the snap-fit ​​component 11 has a plug-in portion 111 at its bottom, which plugs into the opening 221 at the top of the inner cylinder 22; the positioning component 12 has an adjusting arm 121 at its inner end, which is slidably fixed to the top of the snap-fit ​​component 11 and can drive the positioning component 12 to move inward and outward; the positioning component 12 has several positioning holes 122 on its left or right side at its outer end; positioning screws 123 pass through the positioning holes 122, and the positioning screws 123 are used to lock the secondary terminal 30 located below the positioning component 12.

[0024] Therefore, this embodiment, by providing a positioning fixture 10, can easily fix the secondary terminal 30 inside the transformer housing 20, facilitating subsequent polyurethane resin casting production. The positioning fixture 10 has a snap-fit ​​component 11 that can be inserted and fixed to the top of the inner cylinder 22, positioning the entire positioning fixture 10 above the transformer housing 20. The positioning component 12 of the positioning fixture 10 can be provided with a positioning hole 122. Using the positioning hole 122 and positioning screw 123, the secondary terminal 30 can be locked and suspended inside the transformer housing 20 below the positioning fixture 10, facilitating fixing the secondary terminal 30 in a predetermined position during casting. After casting, the positioning fixture 10 can be easily removed for reuse. Furthermore, the adjusting arm 121 at the inner end of the positioning component 12 can move inward and outward along the snap-fit ​​component 11 to adjust the position of the outer end of the positioning component 12. This allows the outer end of the positioning component 12 of the positioning fixture 10 to be fine-tuned for transformer housings 20 of different sizes, improving the versatility of the positioning fixture 10.

[0025] Specifically, the adjusting arm 121 is provided with an inner and outer extending adjusting long slot hole 124, and the top of the clamping piece 11 is provided with an adjusting lock hole (not shown in the figure), and the adjusting long slot hole 124 is provided with an adjusting screw 125, and the adjusting screw 125 is movably locked in the adjusting lock hole. Thus, loosening the adjusting screw 125 from the adjusting lock hole can release the compression of the adjusting long slot hole 124, and the adjusting arm 121 can move forward and backward along the adjusting screw 125 on the clamping piece 11 for adjustment, and after adjusting to the predetermined position, the adjusting screw 125 is locked, so that the adjusting arm 121 and the clamping piece 11 are compressed and fixed, and the positioning tool 10 can be matched with the transformer shell 20.

[0026] In the embodiment, the left and right sides of the outer end of the positioning piece 12 are each provided with a plurality of positioning holes 122. This satisfies the assembly requirements of the left and right two groups of secondary terminals 30, and of course only one side can be assembled. In the embodiment, the left and right sides are each provided with three positioning holes 122.

[0027] Furthermore, an insertion slot 126 can be provided between the adjacent positioning holes 122 on the same side, and the adjacent terminal holes 31 of the secondary terminal 30 are provided with an upwardly protruding insertion plate 32, and the insertion plate 32 is located in the insertion slot 126. This facilitates the quick assembly of the secondary terminal 30 to the lower side of the positioning piece 12, and facilitates the alignment of the positioning hole 122 and the terminal hole 31 of the secondary terminal 30. In the embodiment, the left and right sides are each provided with two insertion slots 126, and the secondary terminal 30 is provided with three terminal holes 31, and correspondingly provided with two insertion plates 32. During assembly, the two insertion plates 32 are inserted into the two insertion slots 126 in a positionally correct manner, and the inner end of the insertion plate 32 can abut the inner side of the insertion slot 126, thereby achieving positioning.

[0028] In the embodiment, the insertion slot 126 can communicate with the side edge of the same side of the positioning piece 12. This facilitates the installation of the secondary terminal 30.

[0029] The shell 21 of the transformer shell 20 can be provided with at least one planar side wall 211. Specifically, the shell 21 of the embodiment includes an arc-shaped side wall 212 and three planar side walls 211 which are sequentially and perpendicularly connected to the left, middle and right openings of the arc-shaped side wall 212. The outer end of the positioning piece 12 can be provided with a downwardly extending abutting top 127, and the bottom of the abutting top 127 is provided with a step 128 which can be clamped to the top edge of the middle planar side wall 211.

[0030] The abutting top 127 can support the outer end of the positioning piece 12, and in cooperation with the clamping piece 11, the supporting effect of the positioning tool 10 can be improved, thereby improving the fixing effect of the secondary terminal 30.

[0031] And the bottom of the top 127 can have a step 128, the step 128 can be clamped in the middle of the plane side wall 211, can play the limiting effect, prevent the positioning tool 10 with the round plug-in part 111 of the clamping piece 11 as the shaft to rotate, to ensure the accurate positioning of the secondary terminal 30.

[0032] The above only is the preferred embodiment of the present application, the protection scope of the present application is not only limited to the above-mentioned examples, all technical solutions under the idea of the present application belong to the protection scope of the present application. It should be pointed out that, for the ordinary skilled in the art, equivalent changes and modifications without departing from the principles of the present application, all should still belong to the protection scope of the present application.

[0033] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or is the orientation or positional relationship commonly used when the product of the application is placed, or is the orientation or positional relationship commonly understood by those skilled in the art, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically limited.

Claims

1. A current transformer secondary terminal positioning tool, characterized in that: the positioning tool is detachably mounted on a transformer housing; the transformer housing comprises an outer shell and an inner cylinder, the inner cylinder inside the outer shell is a circular cylinder; the positioning tool comprises a clamping piece and a positioning piece; the clamping piece has an insertion part at the bottom, which is inserted into the opening at the top of the inner cylinder; the inner end of the positioning piece has an adjusting arm, which is slidably fixed at the top of the clamping piece and can drive the positioning piece to move in and out, and the outer end of the positioning piece has a plurality of positioning holes on the left side or the right side; a positioning screw is arranged in the positioning hole, which is used to lock the secondary terminal placed below the positioning piece.

2. The current transformer secondary terminal positioning tool of claim 1, wherein: The outer end of the positioning piece has a plurality of positioning holes on both sides.

3. The current transformer secondary terminal positioning tool of claim 1 or 2, wherein: Adjacent positioning holes on the same side are provided with a slot; the secondary terminal has an upwardly protruding insertion plate between adjacent terminal holes, and the insertion plate is located in the slot.

4. The current transformer secondary terminal positioning tool of claim 3, wherein: The slot is connected to the same side of the positioning piece.

5. The current transformer secondary terminal positioning tool of claim 1, wherein: The outer end of the positioning piece has a downwardly extending abutting portion, and the abutting portion has a step at the bottom, which is clamped to the top edge of the planar side wall.

6. The current transformer secondary terminal positioning tool of claim 5, wherein: The outer shell comprises an arc-shaped side wall and three planar side walls arranged in sequence and perpendicular to each other at the opening of the arc-shaped side wall; the step is clamped to the middle planar side wall.

7. The current transformer secondary terminal positioning tool of claim 1, wherein: An adjusting long slot hole is arranged on the adjusting arm and extends inwards and outwards, the top of the clamping piece has an adjusting lock hole, and an adjusting screw is arranged in the adjusting long slot hole and movably locked in the adjusting lock hole.

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