Pin protection structure of small electronic transformer

Abstract

The utility model discloses a pin protection structure of a small electronic transformer, which comprises a protection plate, a plurality of pin protection cylinders and a self-adaptive clamping component, the protection plate is vertically provided with a plurality of pin protection cylinders in one-to-one correspondence with transformer pins, and the pin protection cylinders are arranged on the protection plate. The two opposite ends of the pin protective cylinder are provided with self-adaptive clamping assemblies capable of clamping transformer pins respectively. The problems that in the prior art, the thicknesses of pins on the high-voltage side and the low-voltage side of a transformer are different, due to the process problem, the thicknesses of the pins on the same side of the transformer are slightly different, the inner diameter of a pin protection cylinder in a comparison file cannot be changed according to the thicknesses of the pins, and therefore the pin protection cylinder cannot be tightly attached to the thin transformer pins, and the cost is reduced are solved. When the transformer falls, the mechanical clamping force can be weakened, pins are prone to deviation, breakage or deformation, and normal use of the transformer is directly affected. Therefore, the pin protection structure of the small electronic transformer can be tightly attached to the pins of the transformer.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic transformer technical field, specifically, a needle foot protection structure of small -size electronic transformer. BACKGROUND

[0002] Electronic transformer, with the alternating voltage of commercial power is changed into direct current and then through semiconductor switching device and electronic element and high frequency transformer winding constitute a kind of high frequency ac voltage output electronic device, also be described in electronics theory A kind of AC-DC inverter circuit.

[0003] Chinese patent number CN202321625091.9 discloses a needle foot protection structure of small -size electronic transformer, by the needle foot structure of electronic transformer body bottom is inserted in the inside of needle foot protection cylinder, avoid the direct impact between needle foot structure and ground, lead to the bending condition of needle foot structure, realize the protection purpose of needle foot structure on electronic transformer body, will not affect the normal use of electronic transformer.

[0004] The applicant found the following technical problems when implementing the above technical solutions.

[0005] The high-voltage side and low-voltage side needle foot of the transformer are different in thickness, and due to process problems, the thickness of the needle foot on the same side of the transformer also has a slight gap. The inner diameter of the needle foot protection cylinder in the above-mentioned comparative document cannot be changed according to the thickness of the needle foot, so it cannot be tightly attached to the thinner transformer needle foot, which will weaken the mechanical clamping force, and the needle foot will be easily offset, broken or deformed when falling, directly affecting the normal use of the transformer.

[0006] Therefore, it is an urgent problem for the utility model to provide a needle foot protection structure of small -size electronic transformer that can be tightly attached to the transformer needle foot. Utility model content

[0007] In view of the above technical problems, the utility model aims to overcome the problems in the prior art that the high-voltage side and low-voltage side needle foot of the transformer are different in thickness, and due to process problems, the thickness of the needle foot on the same side of the transformer also has a slight gap. The inner diameter of the needle foot protection cylinder in the above-mentioned comparative document cannot be changed according to the thickness of the needle foot, so it cannot be tightly attached to the thinner transformer needle foot, which will weaken the mechanical clamping force, and the needle foot will be easily offset, broken or deformed when falling, directly affecting the normal use of the transformer. Thus, a needle foot protection structure of small -size electronic transformer that can be tightly attached to the transformer needle foot is provided.

[0008] In order to achieve the above object, the utility model provides a needle foot protection structure of small -size electronic transformer, the structure includes: protection board, needle foot protection sleeve and self -adaptation clamping component, a plurality of needle foot protection sleeve that corresponds with transformer needle foot one one is vertically provided on the protection board, the opposite ends of needle foot protection sleeve are provided with the self -adaptation clamping component that can clamp transformer needle foot respectively, wherein, the self -adaptation clamping component includes: annular elastic part and clamping block, the opposite ends of needle foot protection sleeve are coaxially around respectively provided with a plurality of clamping block that can reciprocate towards its axial direction, the opposite ends of needle foot protection sleeve are provided with annular elastic part on each clamping block respectively.

[0009] Preferably, the opposite sides of the clamping block are respectively provided with a limiting sliding block, and the opposite ends of the needle foot protection sleeve are respectively provided with a limiting sliding groove corresponding to each limiting sliding block on the clamping block.

[0010] Preferably, the limiting sliding block is provided with an anti-drop block at one end close to the annular elastic part, and the limiting sliding groove is provided with a clamping block matched with the anti-drop block at an open end.

[0011] Preferably, the inner side of the clamping block is provided with an arc-shaped assembly groove matched with the annular elastic part.

[0012] Preferably, the clamping block is provided with a flexible block at one end away from the annular elastic part.

[0013] Preferably, the upper side of the flexible block is provided with a funnel-shaped guide slope.

[0014] Preferably, the needle foot protection sleeve is provided with a plurality of reinforcing ribs around the side.

[0015] Preferably, the protection board is vertically provided with a vertical plate on the opposite sides of the needle foot protection sleeve, and the inner side of the vertical plate is provided with an elastic limiting piece.

[0016] According to the above technical scheme, the beneficial effects of the utility model compared with the prior art are as follows: by inserting the needle foot of the transformer into the needle foot protection sleeve, the self-adapting clamping assembly at both ends of the needle foot protection sleeve clamps both ends of the needle foot, specifically by compressing the clamping block with the annular elastic part, the clamping block moves along the axial direction of the needle foot protection sleeve, thereby clamping the needle foot, and avoiding the needle foot from deviating, breaking or deforming when falling, directly affecting the normal use of the transformer, and the needle foot protection structure can also straighten the needle foot when the needle foot is inserted or pulled out, even if the needle foot is deformed to a certain extent, it will be straightened when pulled out.

[0017] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode part; moreover, the parts not involved in the utility model are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, and are not intended to limit the present application. In the drawings:

[0019] Figure 1 is a perspective view of the pin protection structure of the small electronic transformer provided in a preferred embodiment of the present application Figure 1 .

[0020] Figure 2 is a perspective view of the pin protection structure of the small electronic transformer provided in a preferred embodiment of the present application Figure 2 .

[0021] Figure 3 is a sectional view of the pin protection structure of the small electronic transformer provided in a preferred embodiment of the present application.

[0022] Figure 4 is a partial perspective view of the pin protection structure of the small electronic transformer provided in a preferred embodiment of the present application Figure 1 .

[0023] Figure 2 is a partial perspective view of the pin protection structure of the small electronic transformer provided in a preferred embodiment of the present application Figures 1-3 .

[0024] BRIEF DESCRIPTION OF THE DRAWINGS: 1 - protection plate; 101 - vertical plate; 102 - elastic limiting piece; 2 - pin protection cylinder; 201 - reinforcing rib; 3 - self-adaptive clamping assembly; 301 - annular elastic piece; 302 - clamping block; 30201 - limiting sliding block; 3020101 - anti-dropping block; 30202 - arc-shaped assembly groove; 30203 - flexible block; 3020301 - guide slope. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0026] In the description of the embodiments of the utility model, it needs to be explained that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship shown in the drawings, or the orientation or position relationship of the utility model product in common use, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", "third" and the like appear, they are only used for differentiation, and cannot be understood as indicating or implying relative importance. In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, they do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the embodiments of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, if the terms "set", "install", "connect", "connect" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0028] In order to further understand the characteristics, technical means and specific purposes and functions achieved by the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0029] Referring to Figure 4 A needle pin protection structure of a small electronic transformer, the structure comprises: a protection plate 1, a needle pin protection sleeve 2 and a self-adaptive clamping assembly 3, a plurality of needle pin protection sleeves 2 corresponding to the transformer needle pins one by one are vertically arranged on the protection plate 1, and the self-adaptive clamping assemblies 3 capable of clamping the transformer needle pins are arranged at the opposite ends of the needle pin protection sleeve 2 respectively; wherein the self-adaptive clamping assembly 3 comprises: an annular elastic piece 301 and a clamping block 302, a plurality of clamping blocks 302 that can reciprocate towards the axial direction are coaxially arranged at the opposite ends of the needle pin protection sleeve 2 respectively, and the annular elastic piece 301 is arranged on each clamping block 302 in the corresponding sleeve at the opposite ends of the needle pin protection sleeve 2.

[0030] The application inserts the pin of the transformer into the pin sleeve 2, and the self-adaptive clamping assembly 3 at both ends of the pin sleeve 2 clamps both ends of the pin, specifically by compressing the clamping block 302 with the annular elastic member 301 to move along the axis direction of the pin sleeve 2, so as to clamp the pin, thereby avoiding the pin deviation, breakage or deformation when falling, which directly affects the normal use of the transformer, and the pin protection structure can also straighten the pin during the insertion and extraction of the transformer pin, so that the pin can be straightened even if it is deformed to a certain extent.

[0031] Referring to Figure 5 : The clamping block 302 is provided with a limiting sliding block 30201 on the opposite sides, and the pin sleeve 2 is provided with a limiting sliding groove corresponding to each limiting sliding block 30201 on the opposite ends.

[0032] The clamping block 302 of the application is movably arranged in the limiting sliding groove along the axis direction of the pin sleeve 2 through the limiting sliding block 30201, so as to ensure that the clamping block 302 will not be deviated and ensure the clamping effect.

[0033] Referring to Figure 5 : The limiting sliding block 30201 is provided with an anti-dropping block 3020101 at one end close to the annular elastic member 301, and the limiting sliding groove is provided with a clamping block matched with the anti-dropping block 3020101 at the open end.

[0034] The clamping block 302 will not be separated from the limiting sliding groove under the action of the annular elastic member 301, thereby causing the self-adaptive clamping assembly 3 to lose effect, and specifically the existence of the clamping block makes the limiting sliding groove in the shape of an inverted “convex”.

[0035] Referring to Figure 4 : The inner side of the clamping block 302 is provided with an arc-shaped assembly groove 30202 matched with the annular elastic member 301.

[0036] The application is designed to prevent the deviation between the annular elastic member 301 and the clamping block 302 after multiple insertion and extraction, which reduces the clamping effect.

[0037] Referring to Figure 5 : The clamping block 302 is provided with a flexible block 30203 at one end away from the annular elastic member 301.

[0038] The flexible block 30203 of the application is made of silicone-like material, which avoids the damage to the surface of the pin caused by the traditional metal clamping structure, and the flexible block 30203 is like a sponge, which can protect the pin during transportation or falling.

[0039] Referring to Figure 2The flexible block 30203 is provided with a funnel-shaped guide slope 3020301 on the upper side.

[0040] The design of the funnel-shaped guide slope 3020301 of the application forms a progressive contact with the contact surface of the flexible block 30203 when the pin is inserted, reduces the instantaneous impact force, and the guide angle is recommended to be 15°-30°, which can reduce the axial friction force when the pin is inserted by 20%-30%, avoids the bending deformation of the pin caused by hard contact, and the funnel slope increases the contact area by 30%-50% compared with the flat design, uniformly distributes the plugging stress to the surface of the flexible block 30203, prevents local stress concentration from causing material fatigue, the flexible block 30203 provides dynamic buffering, the funnel slope optimizes the mechanical path, and the combination of the two realizes the protection effect of “soft with rigidity”, which is better than the traditional design scheme of a single structure.

[0041] Referring to Figure 2 The pin protection sleeve 2 is provided with a plurality of reinforcing ribs 201 around the side.

[0042] In the drop test (height 1m, free fall), the pin offset of the protection sleeve with the reinforcing ribs 201 is only 1 / 5 (<0.05mm vs.>0.2mm) of the un-strengthened structure; by dispersing local stress to the continuous structure of the reinforcing ribs 201, fatigue fracture caused by uneven wall thickness of the protection sleeve is avoided (service life is increased by ≥2 times), the reinforcing ribs 201 cooperate with the flexible block 30203, the funnel guide slope 3020301, the annular elastic member 301 and other structures to form a composite protection system of “rigid support + dynamic buffering”, and the comprehensive performance is better than a single design.

[0043] Referring to ​ The protection plate 1 is vertically provided with vertical plates 101 on the opposite sides of the pin protection sleeve 2, and the inner side of the vertical plate 101 is provided with an elastic limiting piece 102.

[0044] The pin of the electronic transformer is inserted into the pin protection sleeve 2, the pin is clamped by the self-adaptive clamping assembly 3, and then the relative two sides of the electronic transformer are clamped by the elastic limiting piece 102 to further limit and protect the electronic transformer; at the same time, the electronic transformer is clamped and limited by the elastic limiting piece 102, and there is no requirement for the structure of the side of the electronic transformer, and the electronic transformer can be directly inserted and used, without unnecessary processing of the electronic transformer. In the prior art document CN202321625091.9, the electronic transformer needs to be provided with a splicing block matched with the splicing plate on the vertical plate 101 for matching, which increases the processing difficulty of the electronic transformer, and the structure has no effect in the actual use of the electronic transformer.

[0045] The device provided by the utility model is used for clamping the needle pin of the transformer, and the needle pin protection structure can clamp the needle pin of the transformer, avoid the needle pin from being offset, broken or deformed when falling, directly affect the normal use of the transformer, and straighten the needle pin when the needle pin is inserted or pulled out of the transformer, so that the needle pin is straightened even if the needle pin is deformed to a certain extent.

[0046] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical scheme of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model.

[0047] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the utility model will not further describe various possible combination manners.

[0048] In addition, various different embodiments of the utility model can also be combined in any manner, as long as they do not deviate from the concept of the utility model, and they should also be considered as disclosed contents of the utility model.

Claims

1. A pin protection structure of a small electronic transformer, characterized by, The structure comprises a protection plate (1), a pin protection cylinder (2) and an adaptive clamping assembly (3), a plurality of pin protection cylinders (2) corresponding to transformer pins are vertically arranged on the protection plate (1), and the adaptive clamping assembly (3) capable of clamping the transformer pins is arranged at opposite ends of the pin protection cylinder (2), The adaptive clamping assembly (3) comprises a ring-shaped elastic member (301) and a clamping block (302), a plurality of clamping blocks (302) capable of reciprocating towards the axial direction are coaxially arranged at opposite ends of the pin protection cylinder (2), and the ring-shaped elastic member (301) is arranged on each clamping block (302) at the opposite ends of the pin protection cylinder (2).

2. The pin protection structure of a small electronic transformer according to claim 1, characterized in that, The clamping block (302) is provided with a limiting sliding block (30201) at opposite sides, and the pin protection cylinder (2) is provided with a limiting sliding groove corresponding to the limiting sliding block (30201) on each clamping block (302) at opposite ends.

3. The pin protection structure of a small electronic transformer according to claim 2, characterized in that, The limiting sliding block (30201) is provided with an anti-falling block (3020101) at one end close to the ring-shaped elastic member (301), and the limiting sliding groove is provided with a clamping block matched with the anti-falling block (3020101) at the open end.

4. The pin protection structure of a small electronic transformer according to claim 1, characterized in that, The clamping block (302) is provided with an arc-shaped assembly groove (30202) matched with the ring-shaped elastic member (301) on the inner side.

5. The pin protection structure of a small electronic transformer according to claim 1, characterized in that, The clamping block (302) is provided with a flexible block (30203) at one end away from the ring-shaped elastic member (301).

6. The pin protection structure of a small electronic transformer according to claim 5, wherein The flexible block (30203) is provided with a funnel-shaped guide slope (3020301) on the upper side.

7. The pin protection structure of a small electronic transformer according to claim 1, characterized in that, The pin protection cylinder (2) is provided with a plurality of reinforcing ribs (201) around the side.

8. The pin protection structure of a small electronic transformer according to claim 1, wherein The protection plate (1) is vertically provided with a vertical plate (101) on the opposite sides of the pin protection cylinder (2), and the vertical plate (101) is provided with an elastic limiting piece (102) on the inner side.

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