CN109309367A - The connection structure of electromagnetic coil and terminal box and electromagnetic spool device with it - Google Patents

The connection structure of electromagnetic coil and terminal box and electromagnetic spool device with it Download PDF

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Publication number
CN109309367A
CN109309367A CN201710619055.4A CN201710619055A CN109309367A CN 109309367 A CN109309367 A CN 109309367A CN 201710619055 A CN201710619055 A CN 201710619055A CN 109309367 A CN109309367 A CN 109309367A
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CN
China
Prior art keywords
shell
peripheral wall
sealing element
terminal box
boss
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Granted
Application number
CN201710619055.4A
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Chinese (zh)
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CN109309367B (en
Inventor
不公告发明人
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Zhejiang Sanhua Commercial Refrigeration Co ltd
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Zhejiang Sanhua Refrigeration Group Co Ltd
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Priority to CN201710619055.4A priority Critical patent/CN109309367B/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/088Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00Cable fittings
    • H02G15/013Sealing means for cable inlets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00Cable fittings
    • H02G15/08Cable junctions
    • H02G15/10Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/16Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/16Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnets (AREA)
  • Connection Or Junction Boxes (AREA)

Abstract

The invention discloses the connection structure of a kind of electromagnetic coil and terminal box and with its electromagnetic spool device, which includes: boss, is formed in the connecting pin of electromagnetic coil;Sealing element turns down the peripheral wall portion to be formed including planar portions and along the periphery of planar portions, and the cavity shapes that planar portions and peripheral wall portion are formed match with boss, so that the inner surface of sealing element can be close to the outer surface of boss;Connect shell, it is formed in the cage connection end of terminal box, connect the shell peripheral wall that shell includes the shell roof turned down outward along case peripheral wall lower end and is turned over downwards along the periphery of shell roof, the cavity shapes that shell roof and shell peripheral wall are formed match with sealing element, so that the inner surface of connection shell can be close to the outer surface of sealing element;Boss, sealing element and shell all have for the perforative mounting hole of fastener.Connection structure setting can be improved the sealing reliability between electromagnetic coil and terminal box, reduce the probability that accident occurs, it is ensured that product safety performance.

Description

The connection structure of electromagnetic coil and terminal box and electromagnetic spool device with it
Technical field
The present invention relates to Electromagnetic Control technical field, a kind of connection structure more particularly to electromagnetic coil and terminal box and Electromagnetic spool device with the structure.
Background technique
Electromagnetic spool device includes blade inserting electromagnetic coil interconnected and terminal box, wherein terminal box is played in electricity The effect that transition connects between magnetic coil and cable, carries the conducting of circuit.
To ensure circuit safety, there is higher requirement to the water proof and dust proof of electromagnetic spool device, especially for quotient For class product, because use environment, condition are harsh, the security performance of electromagnetic spool device is required also higher.
After electromagnetic spool device used at present, electromagnetic coil and terminal box assembling, the sealed reliable of the two junction Property be not that very well, according to Market Feedback, sealing between the inserted sheet end face of terminal box and electromagnetic coil is easy failure so that moisture It penetrates into and short circuit occurs, the generation of safety accidents is burnt etc. so as to cause electromagnetic coil.
In view of this, how to improve the sealing reliability of electromagnetic coil Yu terminal box junction, become those skilled in the art The current technical issues that need to address of member.
Summary of the invention
The object of the present invention is to provide the connection structure of a kind of electromagnetic coil and terminal box, connection structure setting can be mentioned Sealing reliability between high electromagnetic coil and terminal box reduces the probability that accident occurs, it is ensured that product safety performance.In addition, It is a further object of the present invention to provide a kind of electromagnetic spool devices including above-mentioned connection structure.
In order to solve the above technical problems, the present invention provides the connection structure of a kind of electromagnetic coil and terminal box, comprising:
Boss is formed in the connecting pin of the electromagnetic coil;
Sealing element turns down the peripheral wall portion to be formed, the planar portions and institute including planar portions and along the periphery of the planar portions The cavity shapes for stating peripheral wall portion formation match with the boss, so that the inner surface of the sealing element can be with the boss It is close to outer surface;
Shell is connected, is formed in the cage connection end of the terminal box, the connection shell includes along the case peripheral wall lower end The shell roof turned down outward and the shell peripheral wall being turned over downwards along the periphery of the shell roof, the shell roof and the shell peripheral wall shape At cavity shapes match with the sealing element so that it is described connection shell inner surface can be with the outer surface of the sealing element It is close to;
The boss, the sealing element and the shell all have for the perforative mounting hole of fastener.
The connection structure of electromagnetic coil provided by the invention and terminal box is formed with boss in the connecting pin of electromagnetic coil, It is formed with connection shell at the cage connection end of terminal box, is additionally provided with sealing element, wherein sealing element includes planar portions and along planar portions Periphery fold peripheral wall portion, the cavity shapes that planar portions and peripheral wall portion are formed match with boss, and sealing element is detained Together in boss, and its inner surface can be close to the outer surface of boss;Similarly, the structure of shell is connected so as to be fastened on Sealing element, and its inner surface can be close to the outer surface of sealing element;The shell of boss, sealing element and terminal box all has for tight The perforative mounting hole of firmware, to be connect electromagnetic coil with terminal box by fastener;When assembly, first sealing element is fastened on convex Platform, then terminal box and sealing element, electromagnetic coil are cooperated, finally three is fastenedly connected with fastener, in the fastening of fastener In the process, it by the effect of fastening force, connects shell and is pressed in sealing element, the planar portions and peripheral wall portion of sealing element are squeezed change Shape, and fitted closely with the outer surface of boss, the double-layer seal of plane and circumferential surface is formed, electromagnetic coil and wiring so can be improved The sealing reliability of box junction reduces the probability for leaking outside and causing the accident, it is ensured that the security performance of product.
The present invention also provides a kind of electromagnetic spool devices, including electromagnetic coil and the wiring connecting with the electromagnetic coil The connection structure of box, the electromagnetic coil and the terminal box is connection structure described in any of the above embodiments.
Since the connection structure of above-mentioned electromagnetic coil and terminal box has above-mentioned technique effect, so including the connection structure Electromagnetic spool device also there is corresponding technical effect, discussion is not repeated herein.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of electromagnetic spool device provided by the present invention;
Fig. 2 is the partial enlarged view at the position A in Fig. 1;
Fig. 3 is the structural schematic diagram of electromagnetic coil shown in Fig. 1;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the structural schematic diagram of sealing element shown in Fig. 1;
Fig. 6 is the diagrammatic cross-section of sealing element shown in Fig. 5;
Fig. 7 is the structural schematic diagram of the shell of terminal box shown in Fig. 1;
Fig. 8 is the diagrammatic cross-section of shell shown in Fig. 7.
Wherein, one-to-one relationship of the Fig. 1 into Fig. 8 between component names and appended drawing reference is as follows:
Electromagnetic spool device 10, electromagnetic coil 20, terminal box 30, sealing element 40, fastener 50;
Inserted sheet 21, boss 22, end face 221, circumferential surface 222;
Shell 31 connects shell 32, shell roof 321, shell peripheral wall 322;
Planar portions 41, peripheral wall portion 42, middle through-hole 43.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description The present invention is described in further detail.
It is succinct with description for ease of understanding, below in conjunction with the connection knot of electromagnetic spool device and its electromagnetic coil and terminal box Structure illustrates that beneficial effect part is not repeated to discuss together.
Fig. 1 to Fig. 8 is please referred to, Fig. 1 is a kind of structural representation of specific embodiment of electromagnetic spool device provided by the present invention Figure;Fig. 2 is the partial enlarged view at the position A in Fig. 1;Fig. 3 is the structural schematic diagram of electromagnetic coil shown in Fig. 1;Fig. 4 is Fig. 3's Top view;Fig. 5 is the structural schematic diagram of sealing element shown in Fig. 1;Fig. 6 is the diagrammatic cross-section of sealing element shown in Fig. 5;Fig. 7 is The structural schematic diagram of the shell of terminal box shown in Fig. 1;Fig. 8 is the diagrammatic cross-section of shell shown in Fig. 7.
In the present embodiment, electromagnetic spool device 10 includes electromagnetic coil 20 and terminal box 30, electromagnetic coil 20 and terminal box One end of 30 connections is provided with inserted sheet 21, and terminal box 30 includes shell 31 and female component (not indicating in figure), when the two assembles, Female component is matched with inserted sheet 21 first, then terminal box 30 and electromagnetic coil 20 are fixed together by fastener 50.When So, the female component with shell 31 of terminal box 30 is also fixedly connected.
Wherein, terminal box 30 carries the effect of circuit conducting, to ensure circuit safety, terminal box 30 and electromagnetic coil 20 Connecting portion need to reach certain degree of protection (according to use environment and condition etc. limit) sealing performance, core of the invention The heart is that the connection structure by optimizing electromagnetic coil 20 and terminal box 30, it is ensured that the sealing reliability of the two junction.Under Face elaborates with regard to electromagnetic coil 20 and the connection structure of terminal box 20.
In the present embodiment, the connection structure of electromagnetic coil 20 and terminal box 30 includes being formed in 20 connecting pin of electromagnetic coil Boss 22, be formed in terminal box 30 31 connecting pin of shell connection shell 32, sealing element 40 and fastener 50.
As shown in Figure 3 and Figure 4, it is clear that the inserted sheet 21 of electromagnetic coil 20 is located at the end face 221 of boss 22.
As shown in Figure 5 and Figure 6, sealing element 40 includes having the planar portions 41 of middle through-hole 43 and along the periphery of planar portions 41 Turn down the peripheral wall portion 42 formed;Wherein, the cavity shapes that planar portions 41 and peripheral wall portion 42 are formed match with boss 22, so that close After sealing 40 is fastened on boss 22, the inner surface of sealing element 40 can be close to the outer surface of boss 22, that is to say, that work as sealing When part 40 is fastened on boss 22, planar portions 41 are close to the end face 221 of boss 22, and the circumferential surface 222 of peripheral wall portion 42 and boss 22 is tight Patch.
As shown in Figure 7 and Figure 8, connection shell 32 includes the shell roof 321 turned down outward along 31 peripheral wall lower end of shell and along shell The shell peripheral wall 322 that the periphery of roof 321 is turned over downwards;Wherein, the cavity shapes that shell roof 321 and shell peripheral wall 322 are formed with it is close Sealing 40 matches, and when so that connection shell 32 being fastened on sealing element 40, the inner surface for connecting shell 32 can be outer with sealing element 40 It is close on surface, that is to say, that when connection shell 32 is fastened on sealing element 40, the planar portions 41 of shell roof 321 and sealing element 40 are tight Patch, shell peripheral wall 322 are close to the peripheral wall portion 42 of sealing element 40.
Boss 22, sealing element 40 and shell 31 all have for the perforative mounting hole of fastener 50, so as to electromagnetic coil 20, It is by fastener 50 that the position of three is relatively fixed when sealing element 40 and terminal box 30 assemble.
It is appreciated that the middle through-hole 43 that the planar portions 41 of sealing element 40 have is the inserted sheet for being set to boss 22 for convenience 21 cooperate with the female component of terminal box 30, and the size and shape of middle through-hole 43 can be set as needed, and illustrated scheme is given Having gone out middle through-hole 43 is circular structure.Obviously, on the basis of with middle through-hole 43, fastener 50 can pass through sealing Part 40 and boss 22 cooperate, and sealing element 40 is without being separately provided mounting hole.
Wherein, screw can be selected in fastener 50, simple and convenient, easy to operate.
After the connection structure of electromagnetic coil 20 and terminal box 30 is as above arranged, when the two is assembled, first sealing element 40 is fastened It is assembled in boss 22, then by terminal box 30 and electromagnetic coil 20, when assembling, makes to connect shell 32 and be fastened on sealing element 40, finally use Three is fastenedly connected by fastener 50;During fastener 50 fastens, by the effect of fastening force, the shell roof of shell 32 is connected 321 and shell peripheral wall 322 can squeeze sealing member 40 planar portions 41 and peripheral wall portion 42, fit closely sealing element 40 with boss 22, The double-layer seal for forming plane and circumferential surface, so can be improved the sealing reliability of electromagnetic coil 20 Yu 30 junction of terminal box, drop Low leakage and the probability that causes the accident, it is ensured that the security performance of product.
In specific scheme, as shown in Figure 3 and Figure 4, the boss 22 of electromagnetic coil 20 is square, and its four circumferential surfaces 222 It is inclined-plane, the upper end opposing lower end of each circumferential surface 222 is closer to the center of boss 22.
Correspondingly, the peripheral wall portion 42 of sealing element 40 is adapted with the circumferential surface 222 of boss 22, is inclined peripheral wall portion 42, such as Shown in Fig. 6, certainly, the inclined direction of peripheral wall portion 42 is consistent with the inclined direction of circumferential surface 222;Connect the shell peripheral wall 322 of shell 32 It is adapted with peripheral wall portion 42, is inclined shell peripheral wall 322, as shown in Figure 8.
More specifically, the gradient of four circumferential surfaces 222 of boss 22 is consistent, easy to process in this way and convenient for assembly.
As above, the shell peripheral wall 322 of the circumferential surface 222 of boss 22, the peripheral wall portion 42 of sealing element 40 and connection shell 32 is set as Incline structure, during fastener 50 fastens, the planar portions 31 of sealing element 40 are deformed by forward extrusion, peripheral wall portion 42 Also it is squeezed generation deformation, due to being set as incline structure, it is easier to be deformed, and seal with the circumferential surface of boss 22 222 Fitting, can further increase leakproofness.
With reference to Fig. 3, the gradient of the circumferential surface 222 of boss 22 is B1, with reference to Fig. 6, the inclination of the peripheral wall portion 42 of sealing element 40 Spending is B2, and with reference to Fig. 8, the gradient for connecting the shell peripheral wall 322 of shell 32 is B3, and gradient here refers to counter structure and erects Angle of the histogram between.
In specific scheme, the relationship between the gradient of above-mentioned each structure are as follows: B1 >=B2 > B3.
In this way, in assembly, the peripheral wall portion 42 of sealing element 40 with the circumferential surface 222 of boss 22, connect the shell peripheral wall 322 of shell 32 Cooperation between the peripheral wall portion 42 of sealing element 40 is equivalent to interference fit, when especially connection shell 32 is fastened on sealing element 40, The peripheral wall portion 42 of sealing element 40 is squeezed by shell peripheral wall 322 and circumferential surface 222, forms preliminary preload, in the fastening of subsequent fastener 50 In the process, it can be pressed further by deformation, enhance leakproofness.
With reference to Fig. 3, the height of boss 22 is h1, and with reference to Fig. 6, the height of the cavity of sealing element 40 is (i.e. under peripheral wall portion 42 The distance between the bottom surface of end face and planar portions 41) it is h2, the height of sealing element 40 is h2 ', with reference to Fig. 8, connects the recessed of shell 32 The height (i.e. the distance between the bottom surface of the lower end surface of shell peripheral wall 322 and shell roof 321) of chamber is h3.
In specific scheme, the relationship between above-mentioned each height are as follows: h1 > h2, h2 ' > h3.
In this way, in assembly, the planar portions 41 of sealing element 40 with the end face 221 of boss 22, connect the shell roof 321 of shell 32 Cooperation between the planar portions 41 of sealing element 40 also corresponds to be interference fitted, and especially connection shell 32 is fastened on sealing element 40 When, the planar portions 41 of sealing element 40 are squeezed by shell roof 321 and end face 221, form preliminary preload, are fastened in subsequent fastener 50 During, it can be pressed further by deformation, enhance leakproofness.
In above-described embodiment, the shape of boss 22 is rectangular, it will be understood that the shape of boss 22 be not limited to it is rectangular, can also Think circle or other shapes, is preferably in practice symmetrical regular shape so that it is convenient to assemble.
In above-described embodiment, the entire circumferential surface 222 of boss 22 is the consistent inclined-plane of gradient, it will be understood that actual setting When, the inconsistent gradient of each circumferential surface 222 is also feasible.
In addition, the entire circumferential surface 222 of boss 22 can not also be designed as bevel structure in actual setting, it specifically, can To be arranged one section or more of bevel phase in the circumferential surface of boss 22, the upper end of each bevel phase with respect to its lower end close to the center of boss, Correspondingly, the oblique peripheral wall section being adapted to bevel phase, the setting of shell peripheral wall and the tiltedly week of connection shell 32 is arranged in the peripheral wall portion of sealing element 40 The oblique shell peripheral wall section of wall section adaptation, the gradient relationship on these inclined-planes can with it is consistent in previous embodiment, be not repeated herein.
In order to keep the connection structure of electromagnetic coil 20 and terminal box 30 fixed more with further airtight performance, and assembly It is easy, specifically when setting, the gradient B3 for connecting the oblique shell peripheral wall section of shell 32 is arranged between 8 °~20 °;Sealing element 40 it is recessed The height h2 of chamber is 2 times or 2 times or more of the thickness of the planar portions 41.
When multistage bevel phase is arranged in the circumferential surface of boss, the gradient of each bevel phase can be consistent, in order to assemble, keeps away Exempt to improve the difficulty of related components assembly because gradient is inconsistent.
When multistage bevel phase is arranged in the circumferential surface of boss, each bevel phase is uniformly distributed circumferentially, so as in subsequent fastening In the process, the extruding force for being subject to sealing element 40 is uniform.
Connection structure to a kind of electromagnetic coil provided by the present invention and terminal box and with its electromagnetic coil above Device is described in detail.It is used herein that a specific example illustrates the principle and implementation of the invention, The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that for this technology For the those of ordinary skill in field, without departing from the principle of the present invention, several improvement can also be carried out to the present invention And modification, these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims (11)

1. the connection structure of electromagnetic coil and terminal box characterized by comprising
Boss (22), is formed in the connecting pin of the electromagnetic coil (20);
Sealing element (40) turns down the peripheral wall portion to be formed (42), institute including planar portions (41) and along the periphery of the planar portions (41) It states the cavity shapes that planar portions (41) and the peripheral wall portion (42) are formed to match with the boss (22), so that the sealing element (40) inner surface can be close to the outer surface of the boss (22);
It connects shell (32), is formed in shell (31) connecting pin of the terminal box (30), the connection shell (32) includes along described The shell roof (321) and the shell week being turned over downwards along the periphery of the shell roof (321) that shell (31) peripheral wall lower end turns down outward The cavity shapes that wall (322), the shell roof (321) and the shell peripheral wall (322) are formed match with the sealing element (40), So that the inner surface of connection shell (32) can be close to the outer surface of the sealing element (40);
The boss (22), the sealing element (40) and the shell (31) all have for fastener (50) perforative mounting hole.
2. the connection structure of electromagnetic coil according to claim 1 and terminal box, which is characterized in that the boss (22) Circumferential surface has one section or more of bevel phase, and the upper end of the bevel phase is with respect to its lower end close to the center of the boss (22);Institute The peripheral wall portion (42) for stating sealing element (40) has the oblique peripheral wall section being adapted to the bevel phase, the institute of connection shell (32) Stating shell peripheral wall (322) has the oblique shell peripheral wall section being adapted to the oblique peripheral wall section.
3. the connection structure of electromagnetic coil according to claim 2 and terminal box, which is characterized in that the boss (22) Circumferential surface has bevel phase described in multistage, and the gradient of each bevel phase is consistent.
4. the connection structure of electromagnetic coil according to claim 3 and terminal box, which is characterized in that each bevel phase edge The circumferential direction of the boss (22) is uniformly distributed.
5. the connection structure of electromagnetic coil according to claim 2 and terminal box, which is characterized in that the boss (22) Entire circumferential surface is that paracentral inclined-plane is leaned in upper end, and the gradient of the circumferential surface is consistent.
6. according to the connection structure of claim 2-5 described in any item electromagnetic coils and terminal box, which is characterized in that described convex The gradient B1 of the bevel phase of platform (22), the sealing element (40) corresponding with the bevel phase oblique peripheral wall section gradient B2 with And the relationship of the gradient B3 of the oblique shell peripheral wall section of connection shell (32) corresponding with the oblique peripheral wall section are as follows: B1 >=B2 > B3.
7. the connection structure of electromagnetic coil according to claim 6 and terminal box, which is characterized in that the connection shell (32) Oblique shell peripheral wall section gradient B3 between 8 °~20 °.
8. according to the connection structure of claim 2-5 described in any item electromagnetic coils and terminal box, which is characterized in that described convex The relationship of the height h2 of the cavity of the height h1 and sealing element (40) of platform (22) are as follows: h1 > h2;Connection shell (32) The relationship of the height h2 ' of the height h3 and sealing element (40) of cavity are as follows: h2 ' > h3.
9. the connection structure of electromagnetic coil according to claim 8 and terminal box, which is characterized in that the sealing element (40) Cavity height h2 be the planar portions (41) thickness 2 times or more.
10. the connection structure of electromagnetic coil according to claim 1-5 and terminal box, which is characterized in that described The shape of boss (22) is rectangular or round.
11. electromagnetic spool device, including electromagnetic coil (20) and the wiring being connect with the electromagnetic coil (20) by fastener Box (30), which is characterized in that the connection structure of the electromagnetic coil (20) and the terminal box (30) is that claim 1-8 is any Connection structure described in.
CN201710619055.4A 2017-07-26 2017-07-26 Connection structure of solenoid and terminal box and have its solenoid device Active CN109309367B (en)

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CN201710619055.4A CN109309367B (en) 2017-07-26 2017-07-26 Connection structure of solenoid and terminal box and have its solenoid device

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CN109309367A true CN109309367A (en) 2019-02-05
CN109309367B CN109309367B (en) 2020-11-17

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Cited By (1)

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WO2025036303A1 (en) * 2023-08-11 2025-02-20 浙江盾安人工环境股份有限公司 Waterproof structure and electromagnetic valve

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CN2697920Y (en) * 2004-03-26 2005-05-04 特变电工衡阳变压器有限公司 Cable seal head
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WO2025036303A1 (en) * 2023-08-11 2025-02-20 浙江盾安人工环境股份有限公司 Waterproof structure and electromagnetic valve

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