CN115458370A - Fixing structure of relay leading-out terminal - Google Patents
Fixing structure of relay leading-out terminal Download PDFInfo
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- CN115458370A CN115458370A CN202211395360.7A CN202211395360A CN115458370A CN 115458370 A CN115458370 A CN 115458370A CN 202211395360 A CN202211395360 A CN 202211395360A CN 115458370 A CN115458370 A CN 115458370A
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- Prior art keywords
- limiting
- leading
- relay
- hole
- face
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
Abstract
The invention relates to a high-voltage direct-current relay, in particular to a fixing structure of a leading-out end of a relay. The utility model provides a fixed knot of end is drawn forth to relay, includes the relay arc-extinguishing cover and fixes the end of drawing forth at the fixed part of relay arc-extinguishing cover, the fixed part is equipped with the through-hole that is used for the cooperation to draw forth the end, draw forth the end including passing the section of passing through of through-hole and can not pass the spacing section of through-hole, the position after passing the through-hole through the section is equipped with the depressed part of radial indent, and this depressed part cooperation has a spacing piece, the spacing piece has and is used for and depressed part complex cooperation mouth, and after cooperation mouth and depressed part cooperation, the spacing piece is greater than the internal diameter of through-hole along the radial maximum dimension of through-hole, and then the axial displacement of end is drawn forth in the restriction. The invention has the advantages of reducing the production process requirement and the production cost, effectively avoiding foreign matters from remaining in the relay and avoiding pollution to the interior of the relay.
Description
Technical Field
The invention relates to a high-voltage direct-current relay, in particular to a fixing structure of a leading-out end of a relay.
Background
When the high-voltage direct-current relay is assembled, the leading-out end needs to be fixed with the relay arc extinguishing cover made of ceramic materials. The relay arc-extinguishing cover is provided with a fixing part for fixing the leading-out end, the fixing part is provided with two through holes which penetrate through the fixing part and are used for the leading-out end to penetrate through, and the leading-out end is usually fixed with the relay arc-extinguishing cover in a brazing or threaded connection mode.
Chinese patent application No. 202020510415.4 discloses a high voltage direct current relay draws forth end connection structure, including the relay arc-extinguish chamber, through the high temperature seal connect the connection seat of drawing forth end and being connected with external power source on the relay arc-extinguish chamber, the welding of drawing forth end bottom has the conductor fixing base, and the conductor fixing base keeps away from relay explosion chamber ceramic cover's one end and can dismantle and be connected with the connection seat, the connection seat includes conductor fixed part one and conductor fixed part two, and the cross-section of connection seat is "protruding" style of calligraphy structure, conductor fixed part one and two integrated into one piece of conductor fixed part, and the inside threaded connection hole that is equipped with in two bottoms of conductor fixed part, conductor fixed part two lateral walls evenly encircle the fin.
However, since the terminals are generally made of copper and the relay arc-extinguishing chamber is made of ceramic material, the process for soldering the terminals and the relay arc-extinguishing chamber is required to be high, high-cost equipment is required, and the time for ceramic metallization and soldering is long, which results in high cost for fixing the terminals. Meanwhile, the hardness of the materials of the leading-out terminal and the relay arc extinguishing chamber is reduced due to high-temperature brazing.
Chinese patent with application number 201921976960.6 discloses a high-voltage direct-current relay device, including casing, movable contact subassembly, stationary contact subassembly, the internal thread pipe that runs through about casing top (relay arc-extinguish chamber fixed part) constitutes, and the stationary contact subassembly includes a pair of end of drawing forth, and stationary contact is installed to a pair of end lower extreme of drawing forth, draws forth end lower extreme week side and offers the screw thread section with internal thread pipe complex. Chinese patent application No. 201620377695.X discloses a terminal of drawing forth of high voltage direct current relay, draws forth the terminal and fixes mutually with the frame, draws forth the terminal lower extreme and is fixed with the stationary contact, and the stationary contact is located the frame inboard, draws forth the terminal overcoat and is equipped with the flux sleeve, and the flux sleeve is made by the magnetic conduction material, and the flux sleeve is located between stationary contact and the frame, draws forth the terminal and is formed with the external screw thread, and the flux sleeve is formed with the internal thread that matches with the external screw thread, draws forth terminal and flux sleeve thread tightening.
Because the high-voltage direct-current relay is small in size, high technological requirements are required and the production cost is high no matter external threads are machined on the leading-out end with the outer diameter smaller than 10mm or internal threads are machined on the relay arc-extinguishing cover made of ceramic materials or the magnetic conduction sleeve made of magnetic conduction materials; and the thread adds man-hour can remain the cuttings in internal thread and external screw thread department, and the cuttings is difficult to whole clean up, draws forth the fixed back of end and relay arc-extinguishing cover in the completion, and the cuttings easily drops in the arc extinguishing intracavity that relay arc-extinguishing cover constitutes, can make the arc extinguishing intracavity have the foreign matter, causes the pollution to relay inside.
Disclosure of Invention
The invention aims to provide a fixing structure of a relay leading-out end, which can reduce the production process requirement and the production cost, can effectively avoid foreign matters remaining in a relay and cannot cause pollution to the interior of the relay.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a fixed knot of end is drawn forth to relay, includes the relay arc-extinguishing cover and fixes the end of drawing forth at the fixed part of relay arc-extinguishing cover, the fixed part is equipped with the through-hole that is used for the cooperation to draw forth the end, draw forth the end including passing the section of passing through of through-hole and can not pass the spacing section of through-hole, the position after passing the through-hole through the section is equipped with the depressed part of radial indent, and this depressed part cooperation has a spacing piece, the spacing piece has and is used for and depressed part complex cooperation mouth, and after cooperation mouth and depressed part cooperation, the spacing piece is greater than the internal diameter of through-hole along the radial maximum dimension of through-hole, and then the axial displacement of end is drawn forth in the restriction.
When the leading-out end and the relay arc-extinguishing cover are assembled, the passing section of the leading-out end penetrates through the through hole at the fixed part of the relay arc-extinguishing cover, then the limiting piece is controlled to move in the radial direction relative to the through hole, so that the matching port of the limiting piece is matched with the recessed part of the passing section of the leading-out end, the inner edge of the limiting piece extends into the recessed part, and the fixed part is positioned between the limiting piece deviated from the recessed part and the limiting section of the leading-out end, so that the axial movement of the leading-out end is limited, and the problem that the leading-out end moves due to drawing force in the using process of the relay is solved.
The assembly of the leading-out end is very convenient, and the leading-out end can be assembled and fixed only by matching the leading-out end with the arc extinguishing chamber of the relay and moving the limiting piece; compared with brazing or thread matching, the assembling time is shorter, and the production efficiency can be improved. The leading-out end of the invention only needs to be processed with the depressed part, compared with the processing of a thread structure, the processing area is smaller, the generated powder is less and is easier to clean, and further, the production process requirement and the production time are reduced, thereby reducing the production cost, and avoiding foreign matters in an arc extinguishing chamber formed by the relay arc extinguishing cover as much as possible, so as to avoid the pollution inside the relay.
The limiting member of the present invention may be L-shaped, U-shaped, or other shapes that are formed with a fitting opening and are easily fitted with the recessed portion. The limiting piece can be made of metal or insulating plastic, and the thickness of the limiting piece can be the same as the axial distance of the concave part along the leading-out end; the limiting part can be tightly matched in the concave part, so that the end face of the limiting part and the end face of the limiting section can be simultaneously contacted with the two opposite end faces of the fixing part, and the leading-out end is fixed better. After the assembly of the limiting piece and the leading-out end is completed, the fixing effect can be further enhanced by a plurality of modes such as glue fixing or welding fixing and the like between the limiting piece and the leading-out end. The fixing part is a part for fixing the leading-out end of the relay arc-extinguishing cover of the conventional high-voltage direct-current relay.
Preferably, a limiting structure which is directly matched with the leading-out end to limit the leading-out end to rotate is arranged between the relay arc-extinguishing cover and the leading-out end. The relay arc-extinguishing cover is directly contacted with the leading-out end, so that the rotation of the leading-out end is limited, and the fixing effect of the leading-out end is improved.
Preferably, the limiting structure comprises a first limiting surface and a second limiting surface, the first limiting surface is arranged on the relay arc-extinguishing chamber, the second limiting surface is arranged on the leading-out end, the first limiting surface and the second limiting surface are both planes, and the first limiting surface is in contact with or close to the second limiting surface so as to directly limit the leading-out end to rotate. The first limiting surface can be any one side surface arranged at the fixing part of the relay arc-extinguishing chamber, and even can be the hole wall of the through hole; when the first limiting surface is arranged on the wall of the through hole, the shape of the inner edge of the cross section of the through hole can be made into a square shape. Through clearance fit or contact between face and the face to the rotation angle of restriction locating part and leading-out terminal, thereby avoid leading-out terminal to take place to rotate after the assembly is accomplished, with the stability of guaranteeing to lead-out terminal fixed back.
Preferably, a limiting structure which is matched with the leading-out end through a limiting part to limit the leading-out end to rotate is arranged between the relay arc-extinguishing chamber and the leading-out end. I.e. by means of indirect restriction of the rotation and radial movement of the pigtail. The movement of the limiting part is limited through the structure on the relay arc-extinguishing cover, and the end is in direct contact with the leading-out end through the limiting part, so that the leading-out end is indirectly limited to rotate.
Preferably, the limiting structure comprises a first limiting surface arranged on the relay arc-extinguishing chamber, a second limiting surface arranged on the leading-out end, a third limiting surface and a fourth limiting surface arranged on the limiting part, the first limiting surface, the second limiting surface, the third limiting surface and the fourth limiting surface are planes, the first limiting surface is in contact with or close to the third limiting surface, and the fourth limiting surface is in contact with or close to the second limiting surface to indirectly limit the leading-out end to rotate. The first limiting face, the second limiting face, the third limiting face and the fourth limiting face can be parallel to each other, and therefore rotation limitation of the leading-out end is achieved under the condition that the faces are in clearance fit or contact with each other.
Preferably, the limiting part is in a U shape and comprises two limiting part parts and two limiting part parts connected between the two limiting part parts, the distance between the outer edges of the two limiting part parts is larger than the inner diameter of the through hole, the matching opening is formed between the inner edges of the two limiting part parts, the distance between the inner edges of the two limiting part parts is smaller than the inner diameter of the through hole, and the two opposite sides of the part of the through section passing through the through hole are respectively provided with the recessed part.
The limiting part comprises two limiting part parts, the two opposite sides of the part penetrating through the through hole through the section are provided with sunken parts, and the two limiting part parts are matched with the two sunken parts to improve the stability of the limiting part after assembly. The two parts of the limiting part can be arc-shaped or straight-segment-shaped; the proximity of the leading-out end and the two limiting parts can also be provided with a sunken part used for being matched with the two limiting parts, namely, the inner edges of the two limiting parts also extend into the sunken part.
Preferably, the end portions, far away from the two limiting parts, of the two limiting parts are provided with limiting protrusions, and the two limiting protrusions on the limiting parts are oppositely arranged. The end parts of one part of the two limiting pieces are respectively provided with a limiting bulge so as to avoid the situation that the limiting pieces are separated from the leading-out end after the limiting pieces are matched with the leading-out end; and one part of the limiting part is provided with a limiting bulge, so that the stability of the limiting part after assembly can be improved.
Preferably, the two adjacent side surfaces of the two limiting protrusions are provided with first guide surfaces, and the distance between the two first guide surfaces is gradually reduced from one end part of the limiting part to one root part of the limiting part; the two adjacent side surfaces of the two limiting bulges are respectively provided with a second guide surface, the second guide surfaces are closer to the two parts of the limiting part than the first guide surfaces, and the distance between the two second guide surfaces is gradually increased from the end part of one part of the limiting part to the root part side of one part of the limiting part; the first guide surface is smoothly connected with the second guide surface; the side face of the limiting bulge, which is used for contacting the leading-out end, is an arc surface.
Wherein, through setting up first spigot surface to draw the depressed part of end and the cooperation mouth cooperation of locating part, be convenient for draw the assembly between end and the locating part. And the second guide surface is arranged, so that the limiting bulge can be in effective contact with the side wall of the leading-out end passing section when the section of the leading-out end is circular. The side face of the limiting protrusion, which is used for contacting the leading-out end, is an arc face, point contact instead of surface contact can be achieved between the limiting protrusion and the leading-out end, and the limiting part can be assembled conveniently while the limiting and removing effect is guaranteed.
Preferably, the side walls of the limiting part and the recessed part, which are adjacent to or in contact with each other, are all planes. The side groove face of the groove formed by the side face of the limiting part and the concave part is a plane, the contact area between the limiting part and the leading-out end can be increased, the stability of the limiting part and the leading-out end during assembly is improved, and meanwhile, under the condition that the limiting part is in contact with the first limiting face of the relay arc-extinguishing cover, the anti-rotation effect of the leading-out end can be further improved.
Preferably, the end face of the fixing part is provided with a yielding groove, the limiting part is matched in the yielding groove, and the side wall of the limiting part is in contact with or close to the side wall of the yielding groove.
The abdicating groove is formed on the inner end surface or the outer end surface of the fixed part of the relay arc-extinguishing cover, and the limiting part is positioned in the abdicating groove, so that the structure of the invention is more compact, the limiting part can be prevented from occupying the space of other parts, the interference contact between the limiting part and other parts of the relay is avoided, and the miniaturization of the relay is convenient to keep; meanwhile, the lateral groove wall of the abdicating groove can also play a role in guiding and limiting, so that the limiting part can be assembled and positioned and fixed conveniently.
The invention has the advantages of reducing the production process requirement and the production cost, effectively avoiding foreign matters from remaining in the relay and avoiding polluting the interior of the relay.
Drawings
Fig. 1 is a perspective view of the assembled terminal and relay arc extinguishing chamber of embodiment 1 of the present invention.
Fig. 2 is a bottom view of the relay arc chute and the outlet of embodiment 1 of the present invention after they are assembled.
Figure 3 is a cross-sectional view of the assembled terminal and relay arc chute of embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of a terminal according to embodiment 1 of the present invention.
Fig. 5 is a schematic structural diagram of a limiting member according to embodiment 1 of the present invention.
Fig. 6 is a bottom view of the relay arc chute and the outlet of embodiment 2 of the present invention after assembly.
Fig. 7 is a cross-sectional view of the outlet and the relay arc chute after assembly in accordance with embodiment 2 of the present invention.
Fig. 8 is a schematic structural diagram of a terminal according to embodiment 2 of the present invention.
Fig. 9 is a schematic structural diagram of a position limiting element according to embodiment 2 of the present invention.
Figure 10 is a perspective view of the assembled terminal and relay arc chute of embodiment 3 of the present invention.
Figure 11 is a cross-sectional view of a relay arc chute of embodiment 3 of the present invention.
Fig. 12 is a schematic structural diagram of a terminal according to embodiment 3 of the present invention.
Figure 13 is a cross-sectional view of the assembled terminal and relay arc chute of embodiment 4 of the present invention.
Fig. 14 is a schematic structural diagram of a terminal according to embodiment 4 of the present invention.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments.
Example 1
As shown in fig. 1 to 5, the embodiment discloses a fixing structure of a relay leading-out terminal, including a relay arc-extinguishing chamber 100 and a leading-out terminal 2 fixed on a fixing portion 1 of the relay arc-extinguishing chamber 100, where the fixing portion 1 is provided with a through hole for matching the leading-out terminal 2, the leading-out terminal 2 sequentially includes, from bottom to top, a passing section 21 capable of passing through the through hole and a limiting section 22 incapable of passing through the through hole along an axial direction, a recessed portion 211 radially recessed inwards is provided at a position after the passing through hole through the section 21, the recessed portion 211 is matched with a limiting member 3, the limiting member 3 is provided with a matching port 30 for matching with the recessed portion 211, and after the matching port 30 is matched with the recessed portion 211, the limiting member 3 is larger than an inner diameter of the through hole along a radial maximum dimension of the through hole, so as to limit axial movement of the leading-out terminal 2. As shown in fig. 4, the circumferential surface of the middle section of the lead-through section 21 of the lead-out terminal 2 is recessed to form a recessed portion 211 in the form of an annular groove. Wherein, a stationary contact 200 is fixed on the lower end surface of the leading-out terminal 2.
As shown in fig. 1, 3 and 4, a limiting structure directly matched with the leading-out terminal 2 to limit the rotation of the leading-out terminal 2 is arranged between the fixing part 1 and the leading-out terminal 2, four bosses 11 are arranged on the upper end surface (outer end surface) of the fixing part 1, the limiting structure comprises a first limiting surface arranged on the side surface of the boss 11 and a second limiting surface 221 arranged on a limiting section 22 of the leading-out terminal 2, every two bosses 11 are oppositely arranged and correspond to one leading-out terminal 2, when the leading-out terminal 2 is fixed with the fixing part 1, the limiting section 22 of the leading-out terminal is positioned between the two bosses 11, and when the first limiting surface is contacted with or in clearance fit with the second limiting surface 221, the rotation of the leading-out terminal 2 is limited. Wherein, the cross section of the boss 11 is square.
As shown in fig. 2, 3 and 5, the limiting member 3 is U-shaped to include two limiting member first portions 31 and two limiting member second portions 32 connected between the two limiting member first portions 31, a distance between outer edges of the two limiting member first portions 31 is greater than an inner diameter of the through hole, a fitting opening 30 is formed between inner edges of the two limiting member first portions 31, and a distance between inner edges of the two limiting member first portions 31 is smaller than the inner diameter of the through hole. The width of the first part 31 of the limiting member 3 is greater than the width of the second part 32 of the limiting member, the first part 31 of the limiting member is a straight segment, the second part 32 of the limiting member is an arc segment, and the length of the first part 31 of the limiting member and the length of the second part 32 of the limiting member are both greater than the inner diameter of the through hole.
The end parts of the two first limiting parts 31 far away from the two limiting parts are both provided with limiting protrusions 311, and the two limiting protrusions 311 on the limiting part 3 are oppositely arranged. The side surfaces of the two limiting protrusions 311 adjacent to each other are provided with first guide surfaces 312, and the distance between the two first guide surfaces 312 gradually decreases from the end of the first part 31 of the limiting member (the position where the first part 31 of the limiting member is far away from the second part 32 of the limiting member) to the root of the first part 31 of the limiting member (the position where the first part 31 of the limiting member is close to the second part 32 of the limiting member). The adjacent side surfaces of the two limiting protrusions 311 are provided with second guide surfaces 313, the second guide surfaces 313 are closer to the two limiting parts 32 than the first guide surfaces 312, and the distance between the two second guide surfaces 313 gradually increases from the end part side of the one limiting part 31 to the root part side of the one limiting part 31 and is connected with the side surface of the one limiting part 31 deviating from the end part. The side surface of the limiting protrusion 311 for contacting the leading-out terminal 2 is an arc surface and is composed of the first guide surface 312 and the second guide surface 313, and the first guide surface 312 is smoothly connected with the second guide surface 313.
Example 2
As shown in fig. 6 to 9, the present embodiment is different from embodiment 1 in that: the limiting structures are different, the lower end face of the fixing part 1 is provided with a yielding groove 101 for accommodating the limiting part 3, and the shapes of the concave parts of the leading-out terminals 2 are different.
As shown in fig. 6 and 7, a yielding groove 101 is formed on a lower end surface (inner end surface) of the fixing portion 1, the limiting member 3 is fitted in the yielding groove 101, and an outer side wall of one portion 31 of the limiting member 3 contacts or is close to a side wall of the yielding groove 101. Wherein, the number of the groove 101 of stepping down is two, and one groove 101 of stepping down is collocated a locating part 3, and two grooves 101 of stepping down all are square groove structure, and locating part 3 can slide in the groove 101 of stepping down in order to move to leading out 2 sides and block on leading out 2 from groove 101 one end of stepping down.
As shown in fig. 8 and 9, the two opposite sides of the through section 21 of the terminal 2 of the present embodiment are respectively provided with a concave portion 211, and the lateral groove wall of the groove formed by the two concave portions 211 is a plane. The structure shape of the limiting member 3 in the present embodiment is the same as the structure shape of the limiting member 3 in embodiment 1.
The rotation of the leading-out end 2 is limited in the embodiment by adopting an indirect limiting mode. In this embodiment, the lateral groove wall of the receding groove 101 is used as a first limiting surface, the lateral groove wall of the recessed portion 211 is used as a second limiting surface 221, two opposite side walls of the first portion 31 of the limiting member 3 are respectively used as a third limiting surface 314 and a fourth limiting surface 315, and the first limiting surface, the second limiting surface 221, the third limiting surface 314 and the fourth limiting surface 315 are parallel planes, the first limiting surface is in contact with or close to the third limiting surface 314, the third limiting surface 314 is parallel to the fourth limiting surface 315, and the fourth limiting surface 315 is in contact with the second limiting surface 221, so as to limit the rotation of the leading-out terminal 2.
Example 3
As shown in fig. 10 to 12, the present embodiment is different from embodiment 1 in that: the limiting structure is arranged on the lower side of the fixing part 1 instead of the upper side of the fixing part 1 and is arranged in a cavity formed by the relay arc-extinguishing chamber 100; the terminals 2 have different shapes, and the part of the terminals 2 located outside the arc-extinguishing chamber 100 of the relay of the present embodiment is used for matching with the limiting member 3.
The leading-out end 2 of this embodiment includes from top to bottom in proper order through section 21, spacing section 22 and stationary contact fixed section 23, and the stationary contact 200 is fixed at stationary contact fixed section 23 lower extreme face, and spacing section 22 relative both sides wall is the plane and constitutes spacing face 221 of second, through section 21 indent in order to constitute annular depressed part 211.
Limiting structure is including setting up the first spacing face 111 on the relay arc-extinguish chamber, setting up the spacing face 221 of second on drawing forth end 2, and the fixed part 1 downside of this embodiment is equipped with four bosss 11, and first spacing face 111 sets up on boss 11, and every is used for supplying to draw forth end 2 the relative both sides of the through-hole 102 that section 21 passes through all are equipped with a boss 11.
The limiting structure comprises a first limiting surface arranged on the boss 11 and a second limiting surface 221 arranged on the limiting section 22 of the leading-out end 2, when the leading-out end 2 is fixed together with the fixed part 1 through the limiting part 3, the limiting section 22 of the leading-out end is positioned between the two bosses 11, and the first limiting surface is in contact with the second limiting surface 221, so that the rotation of the leading-out end 2 is limited.
Example 4
As shown in fig. 13 and 14, the present embodiment differs from embodiment 2 in that: the leading-out ends 2 are different in shape and structure, and the upper end face of the fixing part 1 is provided with a limiting structure and a yielding groove 101 for accommodating the limiting part 3. The structure of the limiting member 3 in the present embodiment is the same as the structure of the limiting member 3 in embodiment 2.
The end 2 of drawing forth of this embodiment includes from top to bottom in proper order through section 21, spacing section 22 and stationary contact fixed section 23, and stationary contact 200 fixes terminal surface under stationary contact fixed section 23, and spacing section 22 external diameter is greater than the through-hole internal diameter, and the position after passing the through-hole through section 21 is equipped with the depressed part 211 of radial indent, and the depressed part 211 of this embodiment is the ring channel structure, and the side cell wall of the relative both sides of depressed part 211 is the plane in order to constitute the spacing face 221 of spacing structure's second.
Two yielding grooves 101 are formed in the upper end face (outer end face) of the fixing portion 1, each limiting member 3 is matched in one yielding groove 101, and the outer side wall of one portion 31 of each limiting member 3 is in contact with the side wall of the corresponding yielding groove 101. Two groove 101 of stepping down all are square groove structure, and locating part 3 can slide in groove 101 of stepping down in order to remove to drawing forth end 2 side and block on drawing forth end 2 from groove 101 one end of stepping down.
In this embodiment, the lateral groove wall of the receding groove 101 is used as the first limiting surface 111, the planar lateral groove wall of the recess 211 is used as the second limiting surface 221, two opposite side walls of the first portion 31 of the limiting member 3 are respectively used as the third limiting surface 314 and the fourth limiting surface 315, the first limiting surface, the second limiting surface 221, the third limiting surface 314 and the fourth limiting surface 315 are all planar, the first limiting surface is in contact with or close to the third limiting surface 314, the third limiting surface 314 is parallel to the fourth limiting surface 315, and the fourth limiting surface 315 is in contact with the second limiting surface 221, so as to limit the rotation of the leading-out terminal 2.
The invention has the advantages of reducing the production process requirement and the production cost, effectively avoiding foreign matters from remaining in the relay and avoiding pollution to the interior of the relay.
Claims (10)
1. The utility model provides a fixed knot of end is drawn forth to relay constructs, includes the relay arc-extinguishing cover and fixes the end of drawing forth at the fixed part of relay arc-extinguishing cover, the fixed part is equipped with the through-hole that is used for the cooperation to draw forth the end, its characterized in that: the leading-out end comprises a passing section and a limiting section, the passing section can penetrate through the through hole, the limiting section cannot penetrate through the through hole, a radially inwards concave part is arranged at the position, after the passing section penetrates through the through hole, of the passing section, the concave part is matched with a limiting piece, the limiting piece is provided with a matching opening used for being matched with the concave part, after the matching opening is matched with the concave part, the limiting piece is larger than the inner diameter of the through hole along the radial maximum dimension of the through hole, and therefore the axial movement of the leading-out end is limited.
2. The fixing structure of the relay lead-out terminal according to claim 1, characterized in that: and a limiting structure which is directly matched with the leading-out end to limit the rotation of the leading-out end is arranged between the relay arc-extinguishing cover and the leading-out end.
3. The fixing structure of the relay lead-out terminal according to claim 2, characterized in that: the limiting structure comprises a first limiting surface and a second limiting surface, the first limiting surface is arranged on the relay arc-extinguishing cover, the second limiting surface is arranged on the leading-out end, the first limiting surface and the second limiting surface are both planes, and the first limiting surface is in contact with or close to the second limiting surface to directly limit the leading-out end to rotate.
4. The fixing structure of the relay lead-out terminal according to claim 1, characterized in that: and a limiting structure which is matched with the leading-out end through a limiting part to limit the leading-out end to rotate is arranged between the relay arc-extinguishing cover and the leading-out end.
5. The fixing structure of the relay lead-out terminal according to claim 4, wherein: the limiting structure comprises a first limiting face arranged on the relay arc-extinguishing cover, a second limiting face arranged on the leading-out end, a third limiting face arranged on the limiting part and a fourth limiting face, wherein the first limiting face, the second limiting face, the third limiting face and the fourth limiting face are planes, the first limiting face is in contact with or close to the third limiting face, and the fourth limiting face is in contact with or close to the second limiting face to indirectly limit the leading-out end to rotate.
6. The fixing structure of the relay lead-out according to claim 1, 2, 3, 4 or 5, characterized in that: the locating part is the U-shaped in order to include two locating part one and connect two portions of locating part between two locating part one, and the distance between two locating part one outer peripheries is greater than the through-hole internal diameter, constitutes between two locating part one inner edges the cooperation mouth, the distance between two locating part one inner edges is less than the through-hole internal diameter, the relative both sides in position after passing the through-hole through the section all are equipped with the depressed part.
7. The fixing structure of the relay lead-out terminal according to claim 6, characterized in that: the tip that two locating part two parts were kept away from to two locating part one all is equipped with spacing arch, two spacing archs on the locating part set up relatively.
8. The fixing structure of the relay lead-out terminal according to claim 7, characterized in that: the side surfaces of the two limiting bulges, which are close to each other, are provided with first guide surfaces, and the distance between the two first guide surfaces is gradually reduced from one end part of the limiting part to one root part side of one part of the limiting part; the side surfaces of the two limiting bulges, which are adjacent to each other, are provided with second guide surfaces, the second guide surfaces are closer to the two parts of the limiting part than the first guide surfaces, and the distance between the two second guide surfaces is gradually increased from the end part of one part of the limiting part to the root side of one part of the limiting part; the first guide surface is smoothly connected with the second guide surface;
the side face of the limiting bulge, which is used for contacting the leading-out end, is an arc surface.
9. The fixing structure of the relay lead-out terminal according to claim 6, characterized in that: the side walls of the limiting piece and the concave part which are adjacent to or in contact with each other are planes.
10. The fixing structure of the relay lead-out according to claim 1, 4 or 5, characterized in that: the end face of the fixing part is provided with a yielding groove, the limiting part is matched in the yielding groove, and the side wall of the limiting part is in contact with or close to the side wall of the yielding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211395360.7A CN115458370B (en) | 2022-11-09 | 2022-11-09 | Fixing structure of relay leading-out terminal |
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| CN202211395360.7A CN115458370B (en) | 2022-11-09 | 2022-11-09 | Fixing structure of relay leading-out terminal |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115458370B (en) | 2023-02-03 |
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