WO2015081843A1 - 接触板固定结构 - Google Patents

接触板固定结构 Download PDF

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Publication number
WO2015081843A1
WO2015081843A1 PCT/CN2014/092768 CN2014092768W WO2015081843A1 WO 2015081843 A1 WO2015081843 A1 WO 2015081843A1 CN 2014092768 W CN2014092768 W CN 2014092768W WO 2015081843 A1 WO2015081843 A1 WO 2015081843A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact plate
boss
fixing structure
structure according
slot
Prior art date
Application number
PCT/CN2014/092768
Other languages
English (en)
French (fr)
Inventor
蔡洪洲
张红伟
靳海富
Original Assignee
德力西电气有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201310652517.4A external-priority patent/CN103681111B/zh
Priority claimed from CN201310655551.7A external-priority patent/CN103681112B/zh
Priority claimed from CN201310652448.7A external-priority patent/CN103681110B/zh
Application filed by 德力西电气有限公司 filed Critical 德力西电气有限公司
Priority to RU2016103721A priority Critical patent/RU2619764C1/ru
Publication of WO2015081843A1 publication Critical patent/WO2015081843A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques
    • 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

Definitions

  • the invention relates to a contact plate fixing structure, belonging to the technical field of low-voltage electrical appliances.
  • a contactor is an automated control device that uses a current flowing through a coil to generate a magnetic field that closes the contacts to achieve control of the load.
  • the contactor is usually composed of an electromagnetic system, a contact system, an arc extinguishing device, an insulating body and an accessory.
  • the contact system includes a static contact assembly and a movable contact, and the movable contact is usually arranged in conjunction with an armature of the electromagnetic system, and the electromagnetic system is When the coil is energized, the armature moves the movable contact with the corresponding static contact assembly to turn on the load power.
  • the static contact assembly is generally composed of a contact plate and a static contact, the static contact is fixed on the contact plate, and the contact plate is fixed on the insulating body of the contactor, so that the entire static contact assembly is fixed on the body and moves
  • the contacts are mated, and the contact plates are used to support and fix the static contacts of the contactor, thus requiring the contact plates to be unable to move in position when subjected to the pressure of the moving contacts.
  • the contact plate is fixed on the body by pressure fitting, as shown in FIG. 36, after the contact plate 2 is inserted into the slot on the body 1, the contact plate 2 and the body 1 depend on the interference fit at the C in the Y direction. Positioning is performed, and the X direction (i.e., the insertion direction of the contact plate 2) is precisely positioned at A in the drawing (the tip end of the slot insertion direction abuts the contact plate at A) and is pressed by the support member 3 at B in the figure.
  • the prior art contact plate fixing structure comprises a body 1, a contact plate 2 and a support member 3.
  • each contact plate 2 needs to be positioned by the support member 3, and the support member 3 needs to be separately installed at a suitable position of the body 1 , so the prior art contact plate has a complicated fixing structure, high production cost, and low economic efficiency.
  • FIG. 37 There is also a contact plate pressure-mounted fixing structure.
  • the prior art eliminates the elastic pressing action of the support member 3, and directly relies on the interference fit of the Y direction in the figure C to prevent the contact plate 2 from being reversed in the direction of X (the insertion direction of the contact plate 2).
  • the opposite direction is loose.
  • the prior art contact plate fixing structure eliminates the arrangement of the support member 3 and reduces the production cost, the contact plate 2 is subjected to creep at a interference fit position in the Y direction after long-term use, thereby causing a contact plate.
  • the problem to be solved by the present invention is that the existing contact plate fixing structure is prone to loosening in the opposite direction of the insertion direction after long-term use of the contact plate fixing structure, and provides a simple structure, and the contact plate does not reverse in the insertion direction after long-term use. A loose contact plate fixing structure is produced in the direction.
  • a contact plate fixing structure including a body and a contact plate, wherein the body is formed with a slot, and the slot restricts the insertion of the contact plate after the position is inserted into the position
  • the contact plate cannot continue to advance in its insertion direction
  • the contact plate is formed with a boss formed with a resilient card slot for insertion of the boss at a position corresponding to the boss, in the contact
  • the elastic card slot and the boss form an inverted latch structure so that the contact plate cannot be opposite to the insertion direction thereof Move in direction.
  • the boss presses the elastic card slot to continuously deform when inserted into the elastic card slot, and when the contact plate is inserted into a certain position in the slot and is restricted by the slot from continuing to advance, the protrusion
  • the table and the elastic card slot that are not fully recovered after the continuous deformation form the undercut locking structure.
  • the undercut locking structure includes a locking portion formed on the elastic card slot and formed on the boss The locked portion that the locking portion cooperates with.
  • the elastic card slot includes two elastic arms formed on the body shell extending in the insertion direction of the contact plate and a passage formed between the inner side walls of the two elastic arms.
  • the passage includes a first portion that is gradually narrowed by a width in a direction in which the contact plate is inserted, and a second portion having a uniform cross section that is connected to the first portion, the second portion being located at a front end of the contact plate insertion direction.
  • the locking portion includes two abutting ends respectively formed on the inner side walls of the two elastic arms at the top of the contact plate insertion direction; the locked portion includes two opposite directions of the insertion direction of the contact plate An abutting edge that extends and is inclined toward the inner side, the abutting ends respectively abutting against the corresponding abutting edges.
  • the angle at which the abutting end exerts a force on the contacted edge forms an angle of not more than 40 degrees with the direction of insertion of the contact plate, so that the abutting end and the contacted edge form a self-locking.
  • the resisted edge is a straight bevel.
  • the resisted edge is a curved edge.
  • the arc has a circular arc shape.
  • the abutting end is a right angle end point, or a rounded corner, or a reversed oblique side.
  • the boss presses the elastic card slot to continuously deform when inserted into the elastic card slot, and when the contact plate is inserted into a certain position in the slot and is restricted by the slot from continuing to advance, the protrusion
  • the table and the elastic card slot completely recovered after the continuous deformation form the reverse buckle locking structure.
  • the undercut locking structure includes a locking portion formed on the elastic card slot and a locked portion formed on the boss to cooperate with the locking portion.
  • the elastic card slot includes two elastic arms formed on the body shell extending in the insertion direction of the contact plate and a passage formed between the inner side walls of the two elastic arms.
  • the passage includes a first portion that is gradually narrowed by a width in a direction in which the contact plate is inserted, and a second portion having a uniform cross section that is connected to the first portion, the second portion being located at a front end of the contact plate insertion direction.
  • the locking portion includes two abutting edges respectively formed at a top end of the elastic arm along the insertion direction of the contact plate, and the locked portion is formed at a rear end of the boss along the insertion direction of the contact plate.
  • the abutting edge is overlapped with the corresponding abutting edge, and the direction of the supporting force of the abutting edge to the abutting edge is parallel to the insertion direction of the contact plate.
  • the abutting edge and the resisted edge are respectively straight sides.
  • the boss is also formed with a guide portion for guiding the boss into the passage at a front end of the locked portion in the insertion direction of the contact plate.
  • the guide portion is gradually narrowed by a width in a direction in which the contact plate is inserted.
  • the guiding portion is two guiding edges, and the two guiding edges are inclined inwardly toward the inner side along the front end of the contact plate insertion direction.
  • the guiding edge is a straight bevel or a curved edge.
  • the cross-sectional shape of the boss is a pentagon or a quadrangle.
  • the cross-sectional shape of the boss is circular.
  • the cross-sectional shape of the boss is a triangle.
  • the boss is formed on a surface of the contact plate.
  • the boss is a split structure.
  • the slot has a mating structure for positioning the contact plate in two directions perpendicular to the direction in which the contact plate is inserted and perpendicular to each other.
  • the mating structure includes an interference fit structure that positions the contact plate in a direction perpendicular to a lower plate surface of the contact plate.
  • the interference fit structure includes a projection formed on the contact plate and a slot groove wall that is engaged with the projection after the contact plate is inserted into the slot.
  • the protrusion is curved.
  • the mating structure further includes a clearance fit structure for positioning the contact plate in a direction parallel to the contact plate surface and perpendicular to the insertion direction of the contact plate.
  • the certain position is a position at which the contact plate is inserted into the slot at a top end in the insertion direction of the contact plate.
  • an elastic card slot for inserting a boss is formed on the body by forming a boss on the contact plate, so that the contact plate is inserted into a certain position in the slot when the contact plate is assembled.
  • the elastic card slot and the boss form an inverted latching structure, and the reverse latching structure is reliably positioned, and the interaction with the slot realizes the contact plate.
  • the positioning in the opposite direction of the insertion direction and the insertion direction avoids the phenomenon that the contact plate loosens in both the insertion direction and the opposite direction of the insertion direction after a long time of operation, and the reverse lock of the present invention
  • the formation of the buckle structure did not add new parts and did not increase production costs.
  • the boss compresses the elastic card slot continuously when inserted into the elastic card slot, and the contact plate is inserted into the slot at a certain position and is restricted by the slot.
  • the boss and the elastic card slot that are not fully recovered after continuous deformation form the inverted buckle locking structure, and the elastic card slot is positioned to the positioning plate having the boss.
  • the elastic card slot is squeezed and continuously deformed during the insertion process of the boss, and has not been completely elastically restored, and has elastic restoring force, and the elastic arm acts on the boss by the elastic restoring force to achieve the convexity
  • the positioning of the table and the contact plate is simple, the positioning is reliable, and the risk of looseness of the contact plate in the opposite direction of the insertion direction thereof is avoided.
  • the elastic card slot includes two elastic arms formed on the body shell extending in the insertion direction of the contact plate and a passage formed between the inner side walls of the two elastic arms,
  • the passage includes a first portion that is gradually narrowed by a width in a direction in which the contact plate is inserted, and a second portion that has a uniform cross section that is connected to the first portion, the second portion being located at a front end of the contact plate insertion direction,
  • the boss first enters the first portion narrowed by the width in the insertion direction, elastically deforms the elastic arms on both sides of the first portion, and then enters the second portion having a uniform cross section, and the elastic deformation of the elastic arm does not change.
  • the elastic arm After the widest position of the boss passes the front end of the second portion, the elastic arm begins to elastically recover, and the inverted locking structure is formed with the boss at a certain position during the elastic recovery process, in the process, the passage The second part of the transition plays a role.
  • the locking portion includes two abutting ends respectively formed on the inner side walls of the two elastic arms at the top of the contact plate insertion direction; the locked portion includes two along the same
  • the contact plate is inserted in an opposite direction of the insertion direction and is inclined toward the inner side, the abutting edges respectively abut against the corresponding abutting edges, by the arrangement of the above-mentioned abutting end and the abutted edge,
  • the abutting force of the abutting end against the contacted edge points in a direction in which the contact plate is inserted, so that the abutting force of the abutting end against the abutting edge and the blocking force of the contact plate by the slot will insert the contact plate in the insertion direction thereof and insert Positioning is performed in the opposite direction of the direction; in addition, an angle formed by the normal direction of the abutting end against the contacted edge and the opposite direction of the insertion direction of the contact plate is not greater than a self-locking angle, that is, the
  • the boss is further formed with a guide portion at a front end of the locked portion in the insertion direction of the contact plate for guiding the boss into the passage, the guide The portion is gradually narrowed by the width in the insertion direction of the contact plate, and the guiding portion is two guiding edges, and the two guiding edges are straight obliquely inclined toward the inner side along the front end of the contact plate insertion direction.
  • the straight oblique side of the guiding portion and the straight oblique side of the elastic arm together serve a sufficient guiding effect, so that the stress variation of the assembly process of the boss and the elastic arm is balanced and stable.
  • the boss is formed on a surface of the contact plate, the cross-sectional shape of the boss is a regular pentagon or a quadrangle or a circle; the body is formed by an injection mold having the protrusion
  • the contact plate of the table is formed by simple continuous stamping die, which is easy to realize batching and automation.
  • an elastic card slot for inserting a boss is formed on the body by forming a boss on the contact plate.
  • the boss compresses the elastic card slot continuously when inserted into the elastic card slot, and the contact plate is inserted into a certain position in the slot to be restricted by the slot.
  • the boss and the elastic card slot whose deformation has been completely restored form an undercut locking structure, and the reverse locking structure realizes positioning of the contact plate in the opposite direction of the insertion direction thereof, thereby avoiding The contact plate is loosened in the opposite direction of the insertion direction during the working process, and the positioning of the contact plate in the opposite direction of the insertion direction thereof does not increase other components, and the production cost is low.
  • the boss can also be a split structure, which can save the material of the boss, and the setting will undoubtedly reduce the production cost for mass production.
  • the socket has a fitting structure for positioning the contact plate in two directions perpendicular to the direction in which the contact plate is inserted and perpendicular to each other, so as to be perpendicular to the direction in which the contact plate is inserted. Positioning the contact plate in two coordinate directions, the positioning and matching structure is combined with the elastic arm to position the contact plate in the insertion direction by the reverse buckle locking structure, and the contact plate is realized. Positioning in three coordinate directions.
  • the mating structure includes an interference fit structure for positioning the contact plate in a direction perpendicular to a lower plate surface of the contact plate, the positioning structure being reliable in positioning.
  • the mating structure further includes a clearance fit structure for positioning the contact plate in a direction parallel to the contact plate surface and perpendicular to the insertion direction of the contact plate, the clearance fit structure is Conducive to the insertion of the contact plate into the slot, improving assembly efficiency.
  • FIG. 1 is a schematic view showing the assembly of the contact plate and the body of Embodiment 1;
  • Figure 2 is a side elevational view showing the assembly of the contact plate and the body of Embodiment 1;
  • FIG. 3 is a schematic structural view of a body of a contact plate fixing structure of the present invention.
  • FIG. 4 is a schematic structural view of a contact plate of Embodiment 1;
  • Figure 5 is a schematic view showing the assembly process of the pentagon boss and the elastic arm in the first embodiment
  • FIG. 6 is a schematic view showing the self-locking principle of the pentagonal boss and the elastic arm in the first embodiment
  • Figure 7 is a schematic view showing the principle of elastic pressing of the elastic arm and the pentagonal boss in the first embodiment
  • Figure 8 is a schematic view showing the structure of the pentagon boss in the first embodiment and the elastic arm having the right-angle end;
  • Figure 9 is a schematic view showing the structure of the pentagon boss in the first embodiment and the rounded elastic arm;
  • Figure 10 is a schematic view showing the structure of the pentagon boss in the first embodiment and the elastic arm having the inverted bevel;
  • Figure 11 is a schematic view showing the structure of two split triangular bosses in Embodiment 1 assembled with elastic arms having right-angled ends;
  • Figure 12 is a schematic view showing the structure of two split triangular bosses in Embodiment 1 assembled with rounded elastic arms;
  • Figure 13 is a schematic view showing the structure of two split triangular bosses in Embodiment 1 assembled with the inverted beveled elastic arms;
  • Figure 14 is a schematic view showing the structure of the quadrilateral boss and the elastic arm assembled in the first embodiment
  • Figure 15 is a schematic view showing the structure of the quadrangular boss and the elastic arm assembled in the first embodiment
  • Figure 16 is a schematic view showing the structure of the quadrangular boss and the elastic arm assembled in the first embodiment
  • 17 is a schematic perspective view showing the assembled structure of the contact plate and the body in the first embodiment
  • Figure 18 is a schematic view showing the assembly of the contact plate and the body of the second embodiment
  • Figure 19 is a side view showing the assembly of the contact plate and the body of Embodiment 2;
  • Figure 20 is a schematic view showing the assembly process of the circular boss and the elastic arm in the second embodiment
  • Figure 21 is a schematic view showing the structure of the circular boss and the elastic arm having the right-angle end in the second embodiment
  • Figure 22 is a schematic view showing the structure of the circular boss in the second embodiment assembled with the rounded elastic arm
  • Figure 23 is a schematic view showing the structure of the circular boss in the second embodiment and the elastic arm having the inverted bevel;
  • Figure 24 is a schematic view showing the structure of two split semi-circular bosses in Embodiment 2 assembled with elastic arms having right-angled ends;
  • Figure 25 is a schematic view showing the structure of two split semi-circular bosses in Embodiment 2 assembled with rounded elastic arms;
  • Figure 26 is a schematic view showing the structure of two split semi-circular bosses in Embodiment 2 assembled with the inverted beveled elastic arms;
  • Figure 27 is a schematic view showing the assembly of the contact plate and the body of Embodiment 3;
  • Figure 28 is a side elevational view showing the assembly of the contact plate and the body of Embodiment 3;
  • Figure 29 is a schematic view showing the assembly process of the triangular boss and the elastic arm in the third embodiment
  • Figure 30 is a schematic view showing the structure of the triangular boss in the third embodiment and the elastic arm having the right-angle end;
  • Figure 31 is a schematic view showing the structure of the triangular boss and the rounded elastic arm assembled in the third embodiment
  • FIG. 33 is a schematic structural view of two split triangular bosses in Embodiment 3 assembled with elastic arms having right-angled ends;
  • Figure 34 is a schematic view showing the structure of two split triangular bosses in Embodiment 3 assembled with rounded elastic arms;
  • Figure 35 is a schematic view showing the structure of two split triangular bosses in Embodiment 3 assembled with the inverted beveled elastic arms;
  • Figure 36 is a schematic view showing the assembly of the contact plate and the body in the prior art
  • Figure 37 is a schematic view showing the assembly of a contact plate and a body in another prior art.
  • the present embodiment provides a contact plate fixing structure including a body 1 and a contact plate 2, as shown in FIG. Formed with a slot 13 that restricts the contact plate 2 from continuing to advance in its insertion direction after the contact plate 2 is inserted into a position, at the certain position of the slot 13
  • the contact plate 2 achieves precise positioning, ensuring that the contact plate 2 is assembled to the desired position.
  • the certain position is that the contact plate 2 is inserted into the top end position of the slot 13 along the insertion direction of the contact plate 2 (ie, at A in FIG. 2), but The precise positioning position of the contact plate 2 provided by this embodiment is limited thereto.
  • the contact plate may also be restricted by the restriction structure in the slot when not inserted into the top position of the slot 13 and cannot continue. go ahead.
  • the contact plate 2 is formed with a boss 21, as shown in FIG.
  • the body 1 is formed with a resilient card slot for insertion of the boss 21 at a position corresponding to the boss 21, as shown in FIGS.
  • the elastic card slot and the boss 21 form an inverted locking structure, so that the contact plate 2 cannot follow along with the same
  • the insertion direction is opposite to the direction of movement, and the reverse locking structure and the top end of the slot 13 in the insertion direction respectively fix the front end of the contact plate 2 in the insertion direction and the rear end in the insertion direction, thereby realizing the opposite.
  • the contact plate 2 is inserted in it
  • the reliable positioning in the two directions of the inward direction and the opposite direction of the insertion direction prevents the contact plate 2 from loosening in the opposite direction of the insertion direction after long-term use, and the reverse lock structure of the embodiment It is formed by a part of the contact plate 2 and a part of the elastic card slot 13 without additional components, and does not increase the production cost.
  • the boss 21 is continuously deformed when the elastic card slot is inserted into the elastic card slot, and the slot plate 13 is inserted into the slot 13
  • the boss 21 and the elastic card slot which are not fully recovered after the continuous deformation form the reverse lock structure.
  • the positioning of the elastic card slot to the contact plate 2 having the boss 21 mainly utilizes the elastic recovery capability of the elastic card slot, which is not completely elastic recovery after elastic deformation of the elastic card slot.
  • An elastic force acts on the boss 21 to form an undercut locking structure between the boss 21 and the elastic card slot, so as to achieve opposite directions in the insertion direction of the contact plate 2, The contact plate 2 is positioned.
  • the reverse buckle locking structure includes a locking portion formed on the elastic card slot and molding. A locked portion on the boss 21 that abuts against the locking portion.
  • the elastic card slot includes two elastic arms 11 formed on the body 1 and extending in the insertion direction of the contact plate 2, and formed in the two A channel 12 between the inner sidewalls of the resilient arms 11.
  • the passage 12 includes a first portion 12a that is gradually narrowed by a width in a direction in which the contact plate 12 is inserted, and a second portion 12b having a uniform cross section that is connected to the first portion 12a, the second portion 12b being located in the contact
  • the front end of the board 12 is inserted in the direction.
  • the boss 21 first enters the first portion 12a narrowed by the width in the insertion direction, and the elastic arm 11 which presses the both sides of the first portion 12a is elastically deformed, and then enters the second portion having a uniform cross section.
  • the elastic deformation of the elastic arm 11 is constant, and when the widest position of the boss 21 passes the front end of the second portion 12b, the elastic arm 11 starts elastic recovery and is in the elastic recovery process.
  • the position and the boss 21 form the undercut locking structure, and in the process, the second portion 12b functions to transition and adjust the abutting position of the abutting end 111.
  • the locking portion includes two of the inner side walls of the two elastic arms 11 respectively formed at the top of the insertion direction of the contact plate 2. Resisting end 111.
  • the locked portion includes two abutting edges 211 extending in a direction opposite to the insertion direction of the contact plate 2 and inclined inwardly, and the abutting ends 111 respectively abut against the corresponding abutting edges 211.
  • the contact force of the abutting end 111 formed by the elastic recovery on the contacted edge 211 is biased toward the insertion direction of the contact plate 2, thereby
  • the abutting force applied by the abutting end 111 to the contacted edge 211 interacts with the blocking force F of the contact plate 2 by the slot 13 to achieve the insertion direction and the insertion direction of the contact plate 2 together.
  • the opposite direction is positioned in both directions.
  • the abutting end 111 is applied to the direction N of the abutting force of the abutting edge 211 (ie, the normal direction where the abutting end 111 abuts the abutting edge 211) and the contact plate 2 insertion direction (
  • the angle a formed by the opposite direction of the F force in the figure is not greater than the angle of the self-locking angle ⁇ , and the self-locking angle ⁇ is 40 degrees.
  • the self-locking angle ⁇ is according to the contact plate 2 Calculated by the friction coefficient of both the elastic arms 11 and the magnitude of the resisting force applied to the abutting edge 211 by the elastic recovery, in the present embodiment, the self-locking The angle ⁇ is 40 degrees, but is not limited to 40 degrees. Different materials and different abutting forces may cause the self-locking angle ⁇ to change. This embodiment emphasizes that the abutting end 111 is elastically restored and described. The contact of the resisting edge 211 is self-locking, which ensures that the contact plate does not sway during operation.
  • the abutting edge 211 of the embodiment is a straight oblique side.
  • the abutting end 111 of the embodiment is a right angle end point.
  • the right-angled end points are simple in construction and do not need to be separately machined.
  • the abutting end 111 of the embodiment is not limited to a right-angle end point, as shown in FIG. 9-16. It can also be rounded or chamfered, and rounded or inverted beveled requires additional processing, but the rounded or inverted beveled arrangement can be less worn by the resisting edge 211 and the abutting end 111, which is beneficial for extension. The service life of the contact plate fixing structure.
  • the boss 21 is further formed with a front end located in the insertion direction of the contact plate 2 in the direction in which the contact plate 2 is inserted.
  • the boss 21 is inserted into the guide portion of the passage 12, and the guide portion functions to make the boss 21 more stable when inserted into the passage 12.
  • the guide portion is gradually narrowed by the width in the insertion direction of the contact plate 2.
  • the guiding portion is two guiding edges 213, and the two guiding edges 213 are straight oblique sides which are inclined inward along the front end in the insertion direction of the contact plate 2.
  • the two straight oblique sides and the straight oblique sides of the elastic arm 11 are fitted to each other, so that the stress variation between the boss 21 and the elastic arm 11 during the assembly process of the contact plate 2 is made. Balanced and stable.
  • the guiding edge 213 may be a straight oblique side or a curved side. In the embodiment, the guiding edge 213 is preferably a straight oblique side.
  • the cross-sectional shape of the boss 21 is polygonal, which is preferably a regular pentagon in the embodiment, but is not limited to a regular pentagon. It may be an irregular quadrangle as shown in FIGS. 14-16, and may of course be a regular quadrilateral (for example, a diamond).
  • the boss 21 may also be a hexagonal shape, a heptagonal shape, an octagonal shape, or the like, and the principle thereof is the same as that of the regular pentagon, and is not enumerated here.
  • the boss 21 is formed on the surface of the contact plate 2.
  • the elastic arm 11 of the body 1 is limited in space to be formed in the slot. The lower end of the first stage, so that the boss 21 is formed on the lower surface of the contact plate 2, but the elastic arm 11 which is subsequently modified can be formed over the slot 13, the boss 21 can be formed on the upper surface of the contact plate 2, which also falls within the scope of the present invention.
  • the boss 21 may be an integral structure. As shown in FIG. 1-10, the boss 21 is formed into an integrated regular pentagonal structure, but is not limited to an integrated structure, as shown in FIG. As shown in Fig. 13, the boss 21 can also be formed as a split structure comprising two oppositely disposed two portions each having a triangular cross section. The boss 21 is formed into a split structure, which increases the complexity of the processing process, but can save material.
  • the slot 13 has a fitting structure for positioning the contact plate 2 in two directions perpendicular to the insertion direction of the contact plate 2 and perpendicular to each other. .
  • the mating structure includes an interference fit structure for positioning the contact plate 2 in a direction perpendicular to the upper and lower plate faces of the contact plate 2, as shown at C in FIG.
  • the interference fit structure includes a projection 22 formed on the contact plate 2 and a slot groove wall that is engaged with the projection 22 after the contact plate 2 is inserted into the slot 13. Specifically, as shown in FIG. 4, the protrusions 22 are curved.
  • the mating structure further includes a clearance fit structure for positioning the contact plate 2 in a direction parallel to the plate surface of the contact plate 2 and perpendicular to the insertion direction of the contact plate 2.
  • the clearance fit structure facilitates the assembly of the contact plate 2.
  • the assembly of the contact plate 2 is divided into three stages.
  • the boss 21 representing the contact plate 2 moves from left to right with respect to the elastic arm 11 representing the body 1.
  • the inner side wall of the elastic arm 11 of the body 1 cooperates with the straight oblique side of the boss 21 of the contact plate 2 to fully guide the assembly process.
  • the stress variation is balanced and stable; in the interference fit phase, as shown in FIG. 5b, under the pressing action of the boss 21 of the contact plate 2, the elastic arm 11 of the body 1 is elastically deformed outward.
  • the reverse stitch forming stage as shown in FIG. 5c, the upper and lower two highest points of the boss 21 of the contact plate 1 pass over the inner side front corner corners of the elastic arm 11 of the body 1, the bomb The sexual arm 11 is elastically restored to the inner side, and the undercut is formed.
  • the contact plate 2 continues to move to the right until it is precisely positioned at A in FIG. At this time, due to the processing error, the possible rest position of the contact plate 2 is located between the contact plate assembly positions I, II shown in FIG. Corresponding to the assembly position I of the contact plate 2, the elastic deformation of the elastic arm 11 is completely restored, and its working position is the position I in FIG. Corresponding to the contact plate assembly position II, the elastically deformed portion of the top post is restored, and its working position is position II in FIG. Assuming that the distance between the contact plate assembly positions I and II is S, the present invention can perform elastic pressing and reliable positioning in the case where the accumulation error does not exceed S.
  • the present embodiment provides a contact plate fixing structure including a body 1 and a contact plate 2, and the body 1 is formed thereon. Having a slot 13 that restricts the contact plate 2 from continuing to advance in its insertion direction after the contact plate 2 is inserted into a position, the contact being made at the certain position of the slot 13
  • the plate 2 achieves precise positioning to ensure that the contact plate 2 is assembled to a desired position.
  • the certain position is the edge of the contact plate 2 inserted into the slot 13.
  • the position of the top end of the contact plate 2 in the insertion direction ie, at A in FIG. 19
  • the precise positioning position of the contact plate 2 provided by the embodiment is limited thereto, for example, the contact plate may also be inserted into the insertion.
  • the position of the top end of the slot 13 is limited by the restriction structure in the slot and cannot proceed.
  • the contact plate 2 is formed with a boss 21, and the abutting edge 211 of the boss 21 is a curved edge.
  • the curved edge a circular arc-shaped side
  • the body casing 1 is formed with a resilient card slot for insertion of the boss 21 at a position corresponding to the boss 21, and the contact plate 2 is inserted into the slot 13 at a certain position.
  • the elastic card slot and the circular arc edge form an undercut locking structure so that the contact plate 2 cannot move in a direction opposite to the insertion direction thereof.
  • the inverted buckle locking structure is formed by the contact plate 2 and the elastic card slot 13 without additional components, and does not increase the production cost.
  • the curved edge of the boss 21 and the elasticity The cooperation of the card slot does not form a self-locking on the basis of satisfying the positioning of the contact plate, which facilitates the disassembly of the contact plate.
  • the boss 21 is continuously deformed when the elastic card slot is inserted into the elastic card slot, and the slot 13 is inserted into the slot 13
  • the arc-shaped edge forms the undercut locking structure with the elastic card slot that has undergone the continuous deformation and is not fully elastically restored.
  • the positioning of the elastic card slot to the contact plate 2 having the boss 21 mainly utilizes the elastic recovery capability of the elastic card slot, which is not completely elastic recovery after elastic deformation of the elastic card slot.
  • An elastic force acts on the boss 21 to form an undercut locking structure between the boss 21 and the elastic card slot, so as to achieve opposite directions in the direction in which the contact plate 2 is inserted.
  • the contact plate 2 is positioned.
  • the elastic card slot includes two elastic arms 11 formed on the body 1 and extending in the insertion direction of the contact plate 2, and formed in the two A channel 12 between the inner sidewalls of the resilient arms 11.
  • the passage 12 includes a first portion 12a that is gradually narrowed by a width in a direction in which the contact plate 12 is inserted, and a second portion 12b having a uniform cross section that is connected to the first portion 12a, the second portion 12b being located in the contact
  • the front end of the board 12 is inserted in the direction.
  • the boss 21 first enters the first portion 12a narrowed by the width in the insertion direction, and the elastic arm 11 which presses the both sides of the first portion 12a is elastically deformed, and then enters the second portion having a uniform cross section.
  • the elastic deformation of the elastic arm 11 is constant, and when the widest position of the boss 21 passes the front end of the second portion 12b, the elastic arm 11 starts elastic recovery and is in the elastic recovery process.
  • a position and the convex The table 21 forms the inverted latching structure, during which the second portion of the passage acts as a transition.
  • the undercut locking structure further includes two abutting ends 111 disposed on the inner side of the top of the two elastic arms 11 along the insertion direction of the contact plate 2, and the two opposite ends The ends 111 are respectively abutted on the two circular arc sides.
  • the abutting end 111 is a right-angled end point, but is not limited to a right-angled end point, such as shown in FIGS. 22-26, and may also be a rounded or inverted beveled edge.
  • the front portion of the boss 21 in the insertion direction of the contact plate 2 has a guide portion for guiding the boss 21 to be inserted into the passage 12.
  • the guiding portion plays a sufficient guiding role during the insertion of the boss 21 into the passage 12, so that the assembly stress variation between the boss 21 and the elastic arm 11 is balanced and stable.
  • the cross section of the guide portion is gradually narrowed from the width along the insertion direction of the contact plate 2.
  • the guide portion includes two guide sides 213, and the front ends of the two guide sides 213 are inclined inwardly along the front end in the insertion direction of the contact plate 2.
  • the guiding edge 213 is a straight bevel or a curved edge.
  • the guiding edge 213 may be a straight oblique edge or a curved edge. In the embodiment, the guiding edge 213 is preferably a curved edge.
  • the boss 21 is formed on the surface of the contact plate 2. Specifically, in the present embodiment, the boss 21 is formed on the contact plate 2 in consideration of the fact that the elastic arm 11 of the body 1 is limited to be formed under the slot 13 by space. On the lower plate surface, but the subsequent modified elastic arm 11 can be formed over the slot 13, the boss 21 can be formed on the upper plate surface of the contact plate 2, which It also falls within the scope of protection of the present invention.
  • the boss 21 has a circular cross section. As shown in Figures 20-23, the boss is a unitary circular boss structure. However, the boss 21 is not limited to a unitary structure, as shown in FIGS. 24-26, and may be a split structure divided into two semi-circular bosses.
  • the slot 13 has a fitting structure for positioning the contact plate 2 in two directions perpendicular to the insertion direction of the contact plate 2 and perpendicular to each other. .
  • the mating structure includes an interference fit structure for positioning the contact plate 2 in a direction perpendicular to the upper and lower plate faces of the contact plate 2, as shown at C in FIG.
  • the interference fit structure includes a projection 22 formed on the contact plate 2 and a slot groove wall that is engaged with the projection 22 after the contact plate 2 is inserted into the slot 13. As shown in Fig. 19, the projections 22 are curved.
  • the mating structure further includes a clearance fit structure for positioning the contact plate 2 in a direction parallel to the plate surface of the contact plate 2 and perpendicular to the insertion direction of the contact plate 2. This facilitates the assembly of the contact plate 2.
  • the certain position is that the contact plate 2 is inserted into the top end position of the slot 13 in the insertion direction of the contact plate 2.
  • the assembly of the contact plate 2 is divided into three stages, as shown in FIG.
  • the boss 21 representing the contact plate 2 is moved from left to right with respect to the elastic arm 11 representing the body 1.
  • the inner side wall of the elastic arm 11 of the body 1 cooperates with the curved edge of the boss 21 of the contact plate 2 to fully guide the assembly process.
  • the stress change is balanced and smooth; in the interference fit phase, as shown in FIG. 20b, under the pressing action of the boss 21 of the contact plate 2, the elastic arm 11 of the body 1 is elastically deformed outward.
  • the reverse buckle forming stage as shown in FIG. 20c, the upper and lower two highest points of the boss 21 of the contact plate 1 pass over the inner inner front corner corners of the elastic arm 11 of the body 1, the elastic arm 11 then elastic to the inside Recovery, inverted buckle formation.
  • the present embodiment provides a contact plate fixing structure, as shown in FIGS. 27 and 28, including a body 1 and a contact plate 2,
  • the body 1 is formed with a slot 13 formed thereon. After the contact plate 2 is inserted into a certain position, the contact plate 2 is restricted from continuing to advance in the insertion direction thereof.
  • the contact plate 2 is formed with a boss.
  • the body 1 is formed with a resilient card slot for insertion of the boss 21 at a position corresponding to the boss 21, and the boss 21 presses the elastic card when inserted into the elastic card slot
  • the groove is continuously deformed, and when the contact plate 2 is inserted into a position in the slot 13 and is restricted by the slot 13 from continuing to advance, the boss 21 is formed with the elastic card groove which is completely recovered after the continuous deformation.
  • the reverse locking structure is configured such that the contact plate 2 cannot move in a direction opposite to the insertion direction thereof, and the reverse locking structure is used to position the contact plate in the opposite direction of the insertion direction thereof, thereby avoiding the contact plate
  • the opposite of the direction of insertion along the way during the work The loosening occurs, the positioning of the plate in the opposite direction of the contact insertion direction of the present invention, no increase in the other components, reducing production costs.
  • the undercut locking structure includes a locking portion formed on the elastic card slot and a locked portion formed on the boss 21 and abutting the locking portion .
  • the elastic card slot includes two elastic arms 11 formed on the body 1 extending in the insertion direction of the contact plate 2 and formed between the inner side walls of the two elastic arms 11. Channel 12.
  • the passage 12 includes a first portion 12a that is gradually narrowed by a width in a direction in which the contact plate 12 is inserted, and a second portion 12b having a uniform cross section that is connected to the first portion 12a, the second portion 12b being located in the contact
  • the front end of the board 12 is inserted in the direction.
  • the boss 21 first enters the first portion 12a narrowed by the width in the insertion direction, and the elastic arm 11 which presses the both sides of the first portion 12a is elastically deformed, and then enters the second portion having a uniform cross section.
  • the elastic deformation of the elastic arm 11 is constant, and when the widest position of the boss 21 passes the front end of the second portion 12b, the elastic arm 11 is fully elastically restored, and the boss 21 is
  • the inverted buckle locking structure is formed, in which the second portion of the passage serves as a transitional guide.
  • the locking portion includes two abutting edges 112 respectively formed at the top end of the elastic arm 11 along the insertion direction of the contact plate 2, and the locked portion is formed on the boss 21 abutting edge 211 along the rear end of the contact plate 2 insertion direction, the abutting edge 112 overlapping with the corresponding abutting edge 211, respectively, the supporting edge of the abutting edge 211
  • the direction is parallel to the insertion direction of the contact plate 2.
  • the abutting edge 112 and the abutted edge 211 are respectively straight sides.
  • the abutting edge 112 may be a reversed bevel, and the abutted edge 211 may be a corner of the two sides of the boss 21, such as Figure 32 and Figure 35 show.
  • the boss 21 is further formed with a guide portion for guiding the boss 21 to be inserted into the passage 12 at a front end of the locked portion along the insertion direction of the contact plate 2. .
  • the boss 21 can be inserted into the passage 12 more smoothly by the guiding of the guide.
  • the guiding portion includes two guiding edges 213, and the front ends of the two guiding edges 213 are inclined inward along the front end in the insertion direction of the contact plate 2.
  • the guiding edge 213 is a straight bevel or a curved edge.
  • the guiding edge 213 is a straight oblique side.
  • the boss 21 is formed on the surface of the contact plate 2. Specifically, in the present embodiment, the boss 21 is formed on the contact plate 2 in consideration of the fact that the elastic arm 11 of the body 1 is limited to be formed under the slot 13 by space. On the lower plate surface, but the subsequent modified elastic arm 11 can be formed over the slot 13, the boss 21 can be formed on the upper plate surface of the contact plate 2, which It also falls within the scope of protection of the present invention.
  • the cross-sectional shape of the boss 21 is a triangle, and the bottom edge of the triangle is the against the edge 211, the two oblique sides of the triangle are the guiding edge 213.
  • FIG. 30 and FIG. 31 show two embodiments in which the boss 21 is a triangular boss.
  • the top end of the elastic arm 11 along the insertion direction of the contact plate 2 is a straight side, and two The inner corner point of the elastic arm 11 is a right angle end point.
  • the top end of the elastic arm 11 in the insertion direction of the contact plate 2 is a straight side, and the inner corner points of the two elastic arms 11 are rounded.
  • the boss 21 may also be a split structure.
  • the boss 21 is a two-part triangular boss.
  • the top end of the elastic arm 11 along the insertion direction of the contact plate 2 is a flat surface, and the two are The inner corner of the elastic arm 11 is a right-angled end, and the bottom edge of the two-part triangular boss is a straight side.
  • the top end of the elastic arm 11 along the insertion direction of the contact plate 2 is a straight side, and the inner corner points of the two elastic arms 11 are rounded, and the bottom edges of the two split triangular bosses are flat. Straight edge.
  • the top end of the elastic arm 11 in the insertion direction of the contact plate 2 is a straight side, and the inner corner points of the top ends of the two elastic arms 11 are inverted oblique sides, and the outer corner points of the two separate triangles are respectively On the two inverted bevels.
  • the slot 13 has a fitting structure for positioning the contact plate 2 in two directions perpendicular to the insertion direction of the contact plate 2 and perpendicular to each other. .
  • the slot 13 is further positioned on the contact plate 2 in two coordinate directions perpendicular to the insertion direction of the contact plate 2, the mating structure being included in the contact perpendicular to the contact
  • An interference fit structure for positioning the contact plate 2 in the direction of the upper and lower plates of the plate 2.
  • the interference fit structure is reliable in positioning.
  • the interference fit structure includes a projection 22 formed on the contact plate 2 and a slot groove wall that is engaged with the projection 22 after the contact plate 2 is inserted into the slot 13. As shown in Fig. 28, the projection 22 is clamped in the slot groove wall to form an interference fit structure.
  • the projections 22 are curved.
  • the mating structure further includes a clearance fit structure for positioning the contact plate 2 in a direction parallel to the plate surface of the contact plate 2 and perpendicular to the insertion direction of the contact plate 2.
  • the clearance fit facilitates the assembly of the contact plate 2.
  • the certain position is that the contact plate 2 is inserted into the top end position of the slot 13 in the insertion direction of the contact plate 2.
  • the assembly of the contact plate 2 is divided into three stages, as shown in FIG.
  • the boss 21 representing the contact plate 2 is moved from left to right with respect to the elastic arm 11 representing the body 1.
  • the inner side wall of the elastic arm 11 of the body 1 cooperates with the straight oblique side of the boss 21 of the contact plate 2 to fully guide the assembly process.
  • the stress change is balanced and smooth; in the interference fit phase, as shown in FIG. 29b, under the pressing action of the boss 21 of the contact plate 2, the elastic arm 11 of the body 1 is elastically deformed outward. To the maximum.
  • the reverse buckle forming stage as shown in FIG.
  • the upper and lower two highest points of the boss 21 of the contact plate 1 pass over the inner inner front corner corners of the elastic arm 11 of the body 1, the elastic arm 11 is then elastically restored to the inner side, and when the elastic arm 11 is fully restored in elasticity, the abutting edge 112 of the elastic arm 11 and the abutted edge 211 of the boss 21 form an inverted locking structure.
  • the corner point of the formed boss is generally a small rounded corner.

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Abstract

一种接触板固定结构，包括躯壳（1）和接触板（2），躯壳上成型有插槽（13），插槽在接触板插入一定位置后限制接触板不能继续沿其插入方向前进；接触板上成型有凸台（21），躯壳在与凸台相对应位置处成型有供凸台插入的弹性卡槽，在接触板插入插槽内一定位置而被插槽限制不能继续前进时，弹性卡槽与凸台形成倒扣锁止结构，以使接触板不能沿与其插入方向相反方向移动。通过倒扣锁止结构和插槽实现了对接触板在其插入方向和插入方向相反方向两个方向的定位，避免了接触板长期使用后因为过盈配合发生蠕变而导致在插入方向的相反方向上出现松动，且倒扣锁扣结构的形成并没有增加新的零部件，不会提高生产成本。

Description

接触板固定结构 技术领域
本发明涉及一种接触板固定结构，属于低压电器技术领域。
背景技术
接触器是一种自动化的控制电器，它是利用线圈流过电流产生磁场，使触头闭合，以达到控制负载的电器。接触器通常由电磁系统、触头系统、灭弧装置、绝缘躯壳及附件等组成，触头系统包括静触头组件和动触头，动触头通常与电磁系统的衔铁联动设置，电磁系统的线圈通电时，衔铁带动动触头与对应的静触头组件配合，从而接通负载电源。静触头组件一般由接触板和静触头构成，静触头固定在接触板上，而接触板则固定在接触器的绝缘躯壳上，从而使整个静触头组件固定在躯壳上而与动触头相配合，接触板用来支撑和固定接触器的静触头，因此要求接触板在受到动触头的压力时不能发生位置移动。
目前，接触板采用压力装配方式固定在躯壳上，如图36所示，接触板2插入到躯壳1上的插槽后，接触板2和躯壳1在Y方向依靠图中C处的过盈配合进行定位，X方向(即接触板2的插入方向)依靠在图中A处精确定位(插槽插入方向的顶端在A处抵挡住接触板)和在图中B处通过支持件3压紧。该现有技术的接触板固定结构包括躯壳1、接触板2和支持件3，由于躯壳1上需要安装若干个接触板2，而每一个接触板2都需要通过支持件3来定位，支持件3需要单独安装到躯壳1的合适位置处，因此该现有技术的接触板固定结构复杂，生产成本较高，经济效益低。
还有一种接触板压力装配式固定结构，如图37所示，接触板2插入到躯壳1上的插槽后，接触板2和躯壳1在X方向依靠在图中A处精确定位，另外，由图中可以看出，该现有技术取消了支持件3弹性压紧作用，而直接依靠Y方向在图中C处过盈配合来防止接触板2沿X的反方向(接触板2插入方向的相反方向)的松脱。该现有技术的接触板固定结构虽然取消了支持件3的设置，降低了生产成本，但是接触板2在Y方向的过盈配合位置处，在长期使用后会产生蠕变，从而导致接触板2在Y方向上的固定出现松动，而由于接触板2在X方向上没有定位，故在使用过程中接触板2极容易在X方向出现较大位置移动，从而导致接触器产品的动静触头不能可靠稳定地配合，这是接触器产品使用过程中非常严重的质量问题。
综上，如何提供一种结构简单，且在长时间使用后不会在插入方向相反方向上产生松脱的接触板固定结构是现有技术还没有解决的技术难题。
发明内容
本发明所要解决的问题是现有的接触板固定结构长期使用后接触板在插入方向相反方向上容易产生松动的问题，提供一种结构简单，且长时间使用后接触板不会在插入方向相反方向上产生松脱的接触板固定结构。
为了实现上述目的，本发明采用如下技术方案：一种接触板固定结构,包括躯壳和接触板，所述躯壳上成型有插槽，所述插槽在所述接触板插入一定位置后限制所述接触板不能继续沿其插入方向前进；所述接触板上成型有凸台，所述躯壳在与所述凸台相对应位置处成型有供所述凸台插入的弹性卡槽，在所述接触板插入所述插槽内一定位置而被所述插槽限制不能继续前进时，所述弹性卡槽与所述凸台形成倒扣锁止结构，以使所述接触板不能沿与其插入方向相反方向移动。
所述凸台在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板插入所述插槽内一定位置而被所述插槽限制不能继续前进时，所述凸台与所述连续变形后未完全恢复的所述弹性卡槽形成所述倒扣锁止结构。
所述倒扣锁止结构包括成型在所述弹性卡槽上的锁止部以及成型在所述凸台上与所 述锁止部相配合的被锁止部。
所述弹性卡槽包括成型在所述躯壳上的两个沿所述接触板插入方向延伸的弹性臂以及成型在两所述弹性臂内侧壁之间的通道。
所述通道包括沿所述接触板插入方向由宽逐渐变窄的第一部分和与所述第一部分连接的具有均匀截面的第二部分，所述第二部分位于所述接触板插入方向的前端。
所述锁止部包括分别成型在两所述弹性臂内侧壁的位于所述接触板插入方向顶部的两个抵触端；所述被锁止部包括两个沿与所述接触板插入方向相反方向延伸并相对向内侧倾斜的被抵触边，所述抵触端分别抵在相应的所述被抵触边上。
所述抵触端施加在所述被抵触边上力的方向与所述接触板插入方向形成的夹角不大于40度，以使所述抵触端与所述被抵触边形成自锁。
所述被抵触边为直斜边。所述被抵触边为弧形边。所述弧形为圆弧形。
所述抵触端为直角端点，或倒圆角，或倒斜边。
所述凸台在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板插入所述插槽内一定位置而被所述插槽限制不能继续前进时，所述凸台与所述连续变形后完全恢复的所述弹性卡槽形成所述倒扣锁止结构。
所述倒扣锁止结构包括成型在所述弹性卡槽上的锁止部以及成型在所述凸台上与所述锁止部相配合的被锁止部。
所述弹性卡槽包括成型在所述躯壳上的两个沿所述接触板插入方向延伸的弹性臂以及成型在两所述弹性臂内侧壁之间的通道。
所述通道包括沿所述接触板插入方向由宽逐渐变窄的第一部分和与所述第一部分连接的具有均匀截面的第二部分，所述第二部分位于所述接触板插入方向的前端。
所述锁止部包括分别成型在所述弹性臂的沿所述接触板插入方向顶端的两个抵触边，所述被锁止部为成型在所述凸台沿所述接触板插入方向后端的被抵触边，所述抵触边分别与相应的所述被抵触边搭接，所述抵触边对所述被抵触边的支持力的方向与所述接触板的插入方向平行。
所述抵触边和所述被抵触边分别为平直边。
所述凸台还成型有位于所述被锁止部沿所述接触板插入方向的前端的，用于引导所述凸台插入所述通道的导向部。
所述导向部在沿所述接触板插入方向上由宽逐渐变窄。
所述导向部为两个导向边，两个所述导向边沿着所述接触板插入方向的前端相对向内侧倾斜。
所述导向边为直斜边或弧形边。
所述凸台的截面形状为五边形，或四边形。
所述凸台的截面形状为圆形。
所述凸台的截面形状为三角形。
所述凸台成型在所述接触板的板面上。
所述凸台为分体结构。
所述插槽具有在与所述接触板插入方向垂直且相互垂直的两个方向上对所述接触板进行定位的配合结构。
所述配合结构包括在垂直于所述接触板上下板面的方向上对所述接触板进行定位的过盈配合结构。
所述过盈配合结构包括成型在所述接触板上的凸起以及在所述接触板插入所述插槽后与所述凸起卡紧的插槽槽壁。
所述凸起为弧形。
所述配合结构还包括在与所述接触板板面平行且垂直于所述接触板插入方向的方向上对所述接触板进行定位的间隙配合结构。
所述一定位置为所述接触板插入到所述插槽的沿所述接触板插入方向的顶端位置。
本发明的上述技术方案相比现有技术具有以下优点：
1.在本发明中，通过在接触板上成型凸台，在躯壳上成型供凸台插入的弹性卡槽，使得接触板在装配时，所述接触板插入到所述插槽内一定位置而被所述插槽限制不能继续前进时，所述弹性卡槽与所述凸台形成倒扣锁止结构，所述倒扣锁止结构定位可靠，其与插槽的共同作用实现了对接触板在其插入方向和插入方向相反方向两个方向的定位，避免了所述接触板在长时间工作后会出现在插入方向和插入方向相反方向两个方向上松动的现象，本发明的倒扣锁扣结构的形成，没有增加新的零部件，没有增加生产成本。
2.在本发明中，所述凸台在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板插入所述插槽内一定位置而被所述插槽限制不能继续前进时，所述凸台与连续变形后未完全恢复的所述弹性卡槽形成所述倒扣锁止结构，所述弹性卡槽对具有所述凸台的所述接触板进行定位主要是利用了所述弹性卡槽在凸台插入过程中被挤压连续变形后还未完全弹性恢复，存在弹性恢复力，所述弹性臂正是通过该弹性恢复力作用于凸台上，实现对凸台以及接触板的定位，该倒扣锁止结构简单，定位可靠，避免了接触板沿其插入方向的相反方向出现松动的风险。
3.在本发明中，所述弹性卡槽包括成型在所述躯壳上的两个沿所述接触板插入方向延伸的弹性臂以及成型在两所述弹性臂内侧壁之间的通道，所述通道包括沿所述接触板插入方向由宽逐渐变窄的第一部分和与所述第一部分连接的具有均匀截面的第二部分，所述第二部分位于所述接触板插入方向的前端，所述凸台沿插入方向先进入由宽变窄的所述第一部分，挤压所述第一部分两侧的弹性臂弹性变形，然后进入具有均匀截面的第二部分，弹性臂的弹性变形不变，当凸台的最宽位置经过第二部分的前端后，弹性臂开始弹性恢复，并在弹性恢复过程中的某一位置与凸台形成所述倒扣锁止结构，在该过程中，所述通道的所述第二部分起到过渡作用。
4.在本发明中，所述锁止部包括分别成型在两所述弹性臂内侧壁的位于所述接触板插入方向顶部的两个抵触端；所述被锁止部包括两个沿与所述接触板插入方向相反方向延伸并相对向内侧倾斜的被抵触边，所述抵触端分别抵在相应的所述被抵触边上，通过以上所述抵触端和所述被抵触边的设置，使得所述抵触端对所述被抵触边的抵触力指向所述接触板插入的方向，从而抵触端对被抵触边的抵触力与接触板受到插槽的阻挡力将接触板在其插入方向和插入方向的相反方向上实现定位；另外，所述抵触端与所述被抵触边相抵处的法向与所述接触板插入方向的相反方向形成的夹角不大于自锁角，即所述抵触端与所述被抵触边的接触是自锁的，该设置保证了接触板的凸台与弹性臂在工作中不会出现晃动。
5.在本发明中，所述凸台还成型有位于所述被锁止部沿所述接触板插入方向的前端的，用于引导所述凸台插入所述通道的导向部，所述导向部在沿所述接触板插入方向上由宽逐渐变窄，所述导向部为两个导向边，两个所述导向边为沿着所述接触板插入方向的前端相对向内侧倾斜的直斜边，导向部的直斜边和弹性臂的直斜边两者一同起到了充分的导向作用，使得凸台与弹性臂的装配过程的应力变化均衡、平稳。
6.在本发明中，所述凸台成型在所述接触板的板面上，所述凸台的截面形状为正五边形或四边形或圆形；躯壳用注塑模具成型，具有所述凸台的所述接触板通过简单的连续冲压模具加工成型，易于实现批量化和自动化。
7.在本发明中，通过在接触板上成型凸台，在躯壳上成型供凸台插入的弹性卡槽， 使得接触板在装配时，所述凸台在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，所述接触板插入到所述插槽内一定位置而被所述插槽限制不能继续前进时，所述凸台与所述变形已经完全恢复的弹性卡槽形成倒扣锁止结构，通过所述倒扣锁止结构实现对接触板在其插入方向的相反方向的定位，避免了所述接触板在工作过程中沿其插入方向的相反方向出现松动，本发明对接触板在其插入方向的相反方向的定位，没有增加其他零部件，生产成本低。
8.在本发明中，所述凸台还可以为分体结构，该种设置可以节省所述凸台的用材，对于大批量生产来说，该设置无疑会降低成产成本。
9.在本发明中，所述插槽具有在与所述接触板插入方向垂直且相互垂直的两个方向上对所述接触板进行定位的配合结构，从而在与接触板插入方向相垂直的两个坐标方向上，对所述接触板实现了定位，以上定位配合结构结合上述弹性臂通过所述倒扣锁止结构对所述接触板在插入方向上进行的定位，实现了所述接触板在三个坐标方向上的定位。
10.在本发明中，所述配合结构包括在垂直于所述接触板上下板面的方向上对所述接触板进行定位的过盈配合结构，该种定位结构定位可靠。
11.在本发明中，所述配合结构还包括在与所述接触板板面平行且垂直于所述接触板插入方向的方向上对所述接触板进行定位的间隙配合结构，间隙配合结构有利于接触板插入插槽中，提高了装配效率。
附图说明
为了使发明的内容更容易被清楚地理解，下面结合附图，对本发明作进一步详细的说明，其中，
图1是实施例1的接触板与躯壳的装配示意图；
图2是实施例1的接触板与躯壳的装配的侧视图；
图3是本发明接触板固定结构的躯壳的结构示意图；
图4是实施例1的接触板的结构示意图；
图5是实施例1中五边形凸台与弹性臂装配过程示意图；
图6是实施例1中五边形凸台与弹性臂的自锁原理示意图；
图7是实施例1中弹性臂与五边形凸台弹性压紧原理示意图；
图8是实施例1中五边形凸台与具有直角端点弹性臂装配好后的结构示意图；
图9是实施例1中五边形凸台与具有倒圆角弹性臂装配好后的结构示意图；
图10是实施例1中五边形凸台与具有倒斜边弹性臂装配好后的结构示意图；
图11是实施例1中两个分体三角形凸台与具有直角端点弹性臂装配好后的结构示意图；
图12是实施例1中两个分体三角形凸台与具有倒圆角弹性臂装配好后的结构示意图；
图13是实施例1中两个分体三角形凸台与具有倒斜边弹性臂装配好后的结构示意图；
图14是实施例1中四边形凸台与弹性臂装配好后的结构示意图；
图15是实施例1中四边形凸台与弹性臂装配好后的结构示意图；
图16是实施例1中四边形凸台与弹性臂装配好后的结构示意图；
图17是实施例1中接触板与躯壳装配好后的立体结构示意图；
图18是实施例2的接触板与躯壳的装配示意图；
图19是实施例2的接触板与躯壳的装配的侧视图；
图20是实施例2中圆形凸台与弹性臂装配过程示意图；
图21是实施例2中圆形凸台与具有直角端点弹性臂装配好后的结构示意图；
图22是实施例2中圆形凸台与具有倒圆角弹性臂装配好后的结构示意图；
图23是实施例2中圆形凸台与具有倒斜边弹性臂装配好后的结构示意图；
图24是实施例2中两个分体半圆形凸台与具有直角端点弹性臂装配好后的结构示意图；
图25是实施例2中两个分体半圆形凸台与具有倒圆角弹性臂装配好后的结构示意图；
图26是实施例2中两个分体半圆形凸台与具有倒斜边弹性臂装配好后的结构示意图；
图27是实施例3的接触板与躯壳的装配示意图；
图28是实施例3的接触板与躯壳的装配的侧视图；
图29是实施例3中三角形凸台与弹性臂装配过程示意图；
图30是实施例3中三角形凸台与具有直角端点弹性臂装配好后的结构示意图；
图31是实施例3中三角形凸台与具有倒圆角弹性臂装配好后的结构示意图；
图32是实施例3中三角形凸台与具有倒斜边弹性臂装配好后的结构示意图；
图33是实施例3中两个分体三角形凸台与具有直角端点弹性臂装配好后的结构示意图；
图34是实施例3中两个分体三角形凸台与具有倒圆角弹性臂装配好后的结构示意图；
图35是实施例3中两个分体三角形凸台与具有倒斜边弹性臂装配好后的结构示意图；
图36现有技术中的接触板与躯壳的装配示意图；
图37是另一现有技术中接触板与躯壳的装配示意图。
附图标记说明
1-躯壳，11-弹性臂，111-抵触端，112-抵触边，12-通道，12a-第一部分，12b-第二部分，13-插槽；2-接触板，21-凸台，211-被抵触边，22-凸起，213-导向边。
具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
实施例1
作为本发明的优选实施例，如图1、图2和图17所示，本实施例提供一种接触板固定结构,包括躯壳1和接触板2，如图3所示，所述躯壳1上成型有插槽13，所述插槽13在所述接触板2插入一定位置后限制所述接触板2不能继续沿其插入方向前进，在所述插槽13的所述一定位置处对所述接触板2实现精确定位，确保所述接触板2装配到要求的位置处。需要说明的是，在本实施例中，所述一定位置为所述接触板2插入到所述插槽13的沿所述接触板2插入方向的顶端位置(即图2中A处)，但是本实施例提供的接触板2的精确定位位置并限于此，例如，所述接触板还可以在未插入到所述插槽13顶端位置时即被所述插槽内的限制结构限制而不能继续前进。
为了实现所述接触板2在其插入方向以及插入方向相反方向的可靠定位，在本实施例中，如图1和图4所示，所述接触板2上成型有凸台21，如图1和图3所示，所述躯壳1在与所述凸台21相对应位置处成型有供所述凸台21插入的弹性卡槽，如图1和图2所示，在所述接触板2插入所述插槽13内一定位置而被所述插槽13限制不能继续前进时，所述弹性卡槽与所述凸台21形成倒扣锁止结构，以使所述接触板2不能沿与其插入方向相反方向移动，所述倒扣锁止结构与所述插槽13沿插入方向的顶端分别对所述接触板2在插入方向的前端和插入方向的后端进行固定，从而实现了对所述接触板2在其插 入方向以及插入方向相反方向两个方向上的可靠定位，防止了所述接触板2在长期使用后，沿其插入方向相反方向出现松动的现象，而且本实施例的所述倒扣锁止结构是由部分所述接触板2和部分所述弹性卡槽13形成的，没有额外增加其他零部件，不会增加生产成本。
具体地，在本实施例中，如图5所示，所述凸台21在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板2插入所述插槽13内一定位置而被所述插槽13限制不能继续前进时，所述凸台21与所述连续变形后未完全恢复的所述弹性卡槽形成所述倒扣锁止结构。所述弹性卡槽对具有所述凸台21的所述接触板2的定位主要是利用了所述弹性卡槽的弹性恢复能力，正是通过所述弹性卡槽弹性变形后未完全弹性恢复的弹性力作用于所述凸台21上，才使得所述凸台21与所述弹性卡槽之间形成倒扣锁止结构，从而实现在所述接触板2插入方向的相反方向上，对所述接触板2定位。
进一步具体为，在本实施例中，如图1、图5、图6、图7和图8所示，所述倒扣锁止结构包括成型在所述弹性卡槽上的锁止部以及成型在所述凸台21上与所述锁止部相抵的被锁止部。
在本实施例中，如图1和图3所示，所述弹性卡槽包括成型在所述躯壳1上的两个沿所述接触板2插入方向延伸的弹性臂11以及成型在两所述弹性臂11内侧壁之间的通道12。
所述通道12包括沿所述接触板12插入方向由宽逐渐变窄的第一部分12a和与所述第一部分12a连接的具有均匀截面的第二部分12b，所述第二部分12b位于所述接触板12插入方向的前端。所述凸台21沿插入方向先进入由宽变窄的所述第一部分12a，挤压所述第一部分12a两侧的所述弹性臂11弹性变形，然后进入具有均匀截面的所述第二部分12b，所述弹性臂11的弹性变形不变，当所述凸台21的最宽位置经过所述第二部分12b的前端后，所述弹性臂11开始弹性恢复，并在弹性恢复过程中的某一位置与所述凸台21形成所述倒扣锁止结构，在该过程中，所述第二部分12b起到过渡和调整所述抵触端111抵触位置的作用。
再进一步具体地，在本实施例中，如图6和图7所示，所述锁止部包括分别成型在两所述弹性臂11内侧壁的位于所述接触板2插入方向顶部的两个抵触端111。所述被锁止部包括两个沿与所述接触板2插入方向相反方向延伸并相对向内侧倾斜的被抵触边211，所述抵触端111分别抵在相应的所述被抵触边211上。通过以上所述抵触端111和所述被抵触边211的设置，使得所述抵触端111由于弹性恢复形成的施加在所述被抵触边211上的抵触力偏向所述接触板2插入方向，从而所述抵触端111施加于所述被抵触边211的抵触力与所述接触板2受到所述插槽13的阻挡力F相互作用，一同实现对所述接触板2在其插入方向和插入方向的相反方向两个方向上的定位。另外，所述抵触端111施加于所述被抵触边211的抵触力的方向N(即所述抵触端111与所述被抵触边211相抵处的法向)与所述接触板2插入方向(图中F作用力的相反方向)形成的夹角a不大于自锁角θ的角度，自锁角θ为40度，在此需要说明的是，所述自锁角θ根据所述接触板2与所述弹性臂11两者的摩擦系数以及所述抵触端111通过弹性恢复施加在所述被抵触边211上的抵触力的大小而计算得出的，在本实施例中，所述自锁角θ为40度，但并不限于40度，不同的材料以及不同的抵触力会使得自锁角θ有所变化，本实施例着重强调的是：所述抵触端111通过弹性恢复与所述被抵触边211的接触是自锁的，该自锁结构保证了所述接触板在工作中不会出现晃动。
如图1和图4-16所示，本实施例的所述被抵触边211为直斜边。
如图1和图3-8所示，本实施例的所述抵触端111为直角端点。直角端点结构简单，无需单独加工成型。但是本实施例的所述抵触端111并不限于直角端点，如图9-16所示， 还可以为倒圆角或倒斜边，倒圆角或倒斜边需要额外加工成型，但是倒圆角或倒斜边的设置能够较小被抵触边211与抵触端111的磨损，有利于延长接触板固定结构的使用寿命。
另外，在本实施例中，如图1和图4-8所示，所述凸台21还成型有位于所述被锁止部沿所述接触板2插入方向的前端的，用于引导所述凸台21插入所述通道12的导向部，所述导向部的作用在于使所述凸台21插入所述通道12时更平稳。
作为所述导向部的一种优选实施方式，在本实施例中，所述导向部在沿所述接触板2插入方向上由宽逐渐变窄。具体地，所述导向部为两个导向边213，两个所述导向边213为沿着所述接触板2插入方向的前端相对向内侧倾斜的直斜边。在装配过程中，两个直斜边与所述弹性臂11的直斜边相互贴合，从而使得接触板2在装配过程中，所述凸台21与所述弹性臂11之间的应力变化均衡、平稳。
所述导向边213可以为直斜边，也可以为弧形边，在本实施例中，所述导向边213优选为直斜边。
进一步具体地，在本实施例中，如图5-8所示，所述凸台21的截面形状多边形，在本实施例中优选为正五边形，但并不限于正五边形，还可以为如图14-16所示的非规则的四边形，当然也可以为规则的四边形(例如菱形)。所述凸台21还可以为六边形、七边形、八边形等，其原理与正五边形相同，在此不一一列举。
所述凸台21成型在所述接触板2的板面上，具体地，在本实施例中，考虑到所述躯壳1的所述弹性臂11受空间所限只能成型在所述插槽13的下方，故所述凸台21成型在所述接触板2的下板面上，但是后续进行改进后的所述弹性臂11可以成型在所述插槽13的上方时，所述凸台21即可以成型在所述接触板2的上板面上，这也落入到本发明的保护范围之内。
在本实施例中，所述凸台21可以为一体结构，如图1-10所示，所述凸台21成型为一体的正五边形结构，但是并不限于一体结构，如图11-13所示，所述凸台21还可以成型为分体结构，该分体结构包括两个相对设置的两部分，每一部分的截面为三角形。所述凸台21成型为分体结构，虽然增加了加工工艺复杂度，但是可以节约用材。
还有，在本实施例中，如图2所示，所述插槽13具有在与所述接触板2插入方向垂直且相互垂直的两个方向上对所述接触板2进行定位的配合结构。
所述配合结构包括在垂直于所述接触板2上下板面的方向上对所述接触板2进行定位的过盈配合结构，如图2中C处所示。所述过盈配合结构包括成型在所述接触板2上的凸起22以及在所述接触板2插入所述插槽13后与所述凸起22卡紧的插槽槽壁。具体地，如图4所示，所述凸起22为弧形。
所述配合结构还包括在与所述接触板2板面平行且垂直于所述接触板2插入方向的方向上对所述接触板2进行定位的间隙配合结构。间隙配合结构有利于所述接触板2的装配。
根据以上所描述的结构，以下根据附图来说明本实施例的接触板固定结构的装配过程：
如图5所示，所述接触板2的装配分为三个阶段。由图中所示，代表所述接触板2的所述凸台21相对于代表躯壳1的所述弹性臂11自左向右运动。在导向装配阶段，如图5a所示，所述躯壳1的所述弹性臂11内侧壁与所述接触板2的所述凸台21的直斜边配合起到了充分的导向作用，装配过程的应力变化均衡、平稳；在过盈配合阶段，如图5b所示，在所述接触板2的所述凸台21的挤压作用下，所述躯壳1的所述弹性臂11向外侧弹性变形至最大。在倒扣形成阶段，如图5c所示，所述接触板1的所述凸台21的上下两个最高点越过所述躯壳1的所述弹性臂11两内侧前沿角点，所述弹 性臂11随之向内侧弹性恢复，倒扣形成。
所述接触板2继续向右运动，直到在图2中A处精确定位为止。这时，由于加工误差的原因，所述接触板2可能的停留位置位于图7中所示的接触板装配位置I、II之间。相应于所述接触板2的装配位置I，所述弹性臂11的弹性变形完全恢复，其工作位置为图7中的位置I。相应于接触板装配位置II，顶柱的弹性变形部分恢复，其工作位置为图7中的位置II。假设接触板装配位置I、II之间距离为S,那么本发明是对积累误差不超过S的情况下均能进行弹性压紧和可靠定位的。
实施例2
如图18和图19所示，作为实施1接触板固定结构的一种可替换的实施例，本实施例提供一种接触板固定结构,包括躯壳1和接触板2，所述躯壳1上成型有插槽13，所述插槽13在所述接触板2插入一定位置后限制所述接触板2不能继续沿其插入方向前进，在所述插槽13的所述一定位置处对所述接触板2实现精确定位，确保所述接触板2装配到要求的位置处，需要说明的是，在本实施例中，所述一定位置为所述接触板2插入到所述插槽13的沿所述接触板2插入方向的顶端位置(即图19中A处)，但是本实施例提供的接触板2的精确定位位置并限于此，例如，所述接触板还可以在未插入到所述插槽13顶端位置时即被所述插槽内的限制结构限制而不能继续前进。
在本实施例中，如图18和图19所示，所述接触板2上成型有凸台21，所述凸台21的被抵触边211为弧形边，优选的，所述弧形边为圆弧形边，所述躯壳1在与所述凸台21相对应位置处成型有供所述凸台21插入的弹性卡槽，在所述接触板2插入所述插槽13内一定位置而被所述插槽13限制不能继续前进时，所述弹性卡槽与所述圆弧形边形成倒扣锁止结构，以使所述接触板2不能沿与其插入方向相反方向移动。通过所述倒扣锁止结构和所述插槽13对所述接触板2在所述插槽13的沿所述接触板2插入方向的顶端的精确定位(图中A处)的结合，实现了对所述接触板2在其插入方向以及插入方向相反方向的可靠定位，防止了所述接触板2在长期使用后，在沿其插入方向相反方向出现松动的现象，而且本实施例的所述倒扣锁止结构是所述接触板2和所述弹性卡槽13形成的，没有额外增加其他零部件，不会增加生产成本，另外，所述凸台21的弧形边与所述弹性卡槽的配合在既满足所述接触板定位的基础上，又不会形成自锁，方便了所述接触板的拆卸。
具体地，在本实施例中，如图20所示，所述凸台21在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板2插入所述插槽13内一定位置而被所述插槽13限制不能继续前进时，所述圆弧形边与经过所述连续变形且未完全弹性恢复的所述弹性卡槽形成所述倒扣锁止结构。所述弹性卡槽对具有所述凸台21的所述接触板2的定位主要是利用了所述弹性卡槽的弹性恢复能力，正是通过所述弹性卡槽弹性变形后未完全弹性恢复的弹性力作用于所述凸台21上，才使得所述凸台21与所述弹性卡槽之间形成倒扣锁止结构，从而实现在所述接触板2插入方向的相反方向上，对所述接触板2定位。
在本实施例中，如图3和图18所示，所述弹性卡槽包括成型在所述躯壳1上的两个沿所述接触板2插入方向延伸的弹性臂11以及成型在两所述弹性臂11内侧壁之间的通道12。
所述通道12包括沿所述接触板12插入方向由宽逐渐变窄的第一部分12a和与所述第一部分12a连接的具有均匀截面的第二部分12b，所述第二部分12b位于所述接触板12插入方向的前端。所述凸台21沿插入方向先进入由宽变窄的所述第一部分12a，挤压所述第一部分12a两侧的所述弹性臂11弹性变形，然后进入具有均匀截面的所述第二部分12b，所述弹性臂11的弹性变形不变，当所述凸台21的最宽位置经过所述第二部分12b的前端后，所述弹性臂11开始弹性恢复，并在弹性恢复过程中的某一位置与所述凸 台21形成所述倒扣锁止结构，在该过程中，所述通道的所述第二部分起到过渡作用。
再进一步具体地，如图20所示，所述倒扣锁止结构还包括设置在两所述弹性臂11沿所述接触板2插入方向的顶部内侧的两个抵触端111，两所述抵触端111分别抵在两所述圆弧形边上。
在本实施例中，如图20和21所示，所述抵触端111为直角端点，但并不限于直角端点，例如图22-26所示，还可以为倒圆角或倒斜边。
如图20所示，所述凸台21沿所述接触板2插入方向的前部具有用于引导所述凸台21插入所述通道12的导向部。所述导向部在所述凸台21插入所述通道12过程中起到了充分的导向作用，使得所述凸台21与所述弹性臂11之间的装配应力变化均衡、平稳。
具体地，在本实施例中，所述导向部的截面沿所述接触板2插入方向由宽逐渐变窄。所述导向部包括两个导向边213，两个所述导向边213沿着所述接触板2插入方向的前端相对向内侧倾斜。所述导向边213为直斜边或弧形边。在装配过程中，所述导向部的两个直斜边或弧形边与所述弹性臂11的直斜边配合，导向作用好，并且所述凸台21与所述弹性臂11之间的应力变化均衡、平稳。
所述导向边213可以为直斜边，也可以为弧形边，在本实施例中，所述导向边213优选为弧形边。
所述凸台21成型在所述接触板2的板面上。具体地，在本实施例中，考虑到所述躯壳1的所述弹性臂11受空间所限只能成型在所述插槽13的下方，故所述凸台21成型在所述接触板2的下板面上，但是后续进行改进后的所述弹性臂11可以成型在所述插槽13的上方时，所述凸台21即可以成型在所述接触板2的上板面上，这也落入到本发明的保护范围之内。
所述凸台21的截面形状为圆形。如图20-23中，所述凸台为一体的圆形凸台结构。但是所述凸台21不限于一体结构，如图24-26所示，还可以为分体结构，分成两个半圆形凸台。
还有，在本实施例中，如图19所示，所述插槽13具有在与所述接触板2插入方向垂直且相互垂直的两个方向上对所述接触板2进行定位的配合结构。
所述配合结构包括在垂直于所述接触板2上下板面的方向上对所述接触板2进行定位的过盈配合结构，如图19中C处所示。所述过盈配合结构包括成型在所述接触板2上的凸起22以及在所述接触板2插入所述插槽13后与所述凸起22卡紧的插槽槽壁。如图19所示，所述凸起22为弧形。
如图19所示，所述配合结构还包括在与所述接触板2板面平行且垂直于所述接触板2插入方向的方向上对所述接触板2进行定位的间隙配合结构。有利于所述接触板2的装配。
所述一定位置为所述接触板2插入到所述插槽13的沿所述接触板2插入方向的顶端位置。
根据以上所描述的结构，以下根据附图来说明本实施例的接触板固定结构的装配过程：
所述接触板2的装配分为三个阶段，如图20所示。代表所述接触板2的所述凸台21相对于代表躯壳1的所述弹性臂11自左向右运动。在导向装配阶段，如图20a所示，所述躯壳1的所述弹性臂11内侧壁与所述接触板2的所述凸台21的弧形边配合起到了充分的导向作用，装配过程的应力变化均衡、平稳；在过盈配合阶段，如图20b所示，在所述接触板2的所述凸台21的挤压作用下，所述躯壳1的所述弹性臂11向外侧弹性变形至最大。在倒扣形成阶段，如图20c所示，所述接触板1的所述凸台21的上下两个最高点越过所述躯壳1的所述弹性臂11两内侧前沿角点，所述弹性臂11随之向内侧弹性 恢复，倒扣形成。
实施例3
作为实施例1接触板固定结构、实施2接触板固定结构的一种可替换实施例，本实施例提供一种接触板固定结构，如图27和28所示，包括躯壳1和接触板2，所述躯壳1上成型有插槽13，所述插槽13在所述接触板2插入一定位置后限制所述接触板2不能继续沿其插入方向前进，所述接触板2上成型有凸台21，所述躯壳1在与所述凸台21相对应位置处成型有供所述凸台21插入的弹性卡槽，所述凸台21在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板2插入所述插槽13内一定位置而被所述插槽13限制不能继续前进时，所述凸台21与所述连续变形后完全恢复的弹性卡槽形成倒扣锁止结构，以使所述接触板2不能沿与其插入方向相反方向移动，通过所述倒扣锁止结构实现对接触板在其插入方向的相反方向的定位，避免了所述接触板在工作过程中沿其插入方向的相反方向出现松动，本发明对接触板在其插入方向的相反方向的定位，没有增加其他零部件，降低了生产成本。
进一步地，在本实施例中，所述倒扣锁止结构包括成型在所述弹性卡槽上的锁止部以及成型在所述凸台21上与所述锁止部相抵的被锁止部。
如图3和27所示，所述弹性卡槽包括成型在所述躯壳1上的两个沿所述接触板2插入方向延伸的弹性臂11以及成型在两所述弹性臂11内侧壁之间的通道12。
所述通道12包括沿所述接触板12插入方向由宽逐渐变窄的第一部分12a和与所述第一部分12a连接的具有均匀截面的第二部分12b，所述第二部分12b位于所述接触板12插入方向的前端。所述凸台21沿插入方向先进入由宽变窄的所述第一部分12a，挤压所述第一部分12a两侧的所述弹性臂11弹性变形，然后进入具有均匀截面的所述第二部分12b，所述弹性臂11的弹性变形不变，当所述凸台21的最宽位置经过所述第二部分12b的前端后，所述弹性臂11弹性完全恢复，并与所述凸台21形成所述倒扣锁止结构，在该过程中，所述通道的所述第二部分起到过渡引导作用。
在本实施例中，所述锁止部包括分别成型在所述弹性臂11的沿所述接触板2插入方向顶端的两个抵触边112，所述被锁止部为成型在所述凸台21沿所述接触板2插入方向后端的被抵触边211，所述抵触边112分别与相应的所述被抵触边211搭接，所述抵触边112对所述被抵触边211的支持力的方向与所述接触板2的插入方向平行。
具体地，在本实施例中，所述抵触边112和所述被抵触边211分别为平直边。
作为所述抵触边112和所述被抵触边211的一种变形，所述抵触边112可以为倒斜边，所述被抵触边211可以为所述凸台21的两侧的角点，如图32和图35所示。
另外，在本实施例中，所述凸台21还成型有位于所述被锁止部沿所述接触板2插入方向前端的，用于引导所述凸台21插入所述通道12的导向部。通过所述导向部的引导，所述凸台21可以更顺畅的插入到所述通道12中。
具体地，所述导向部包括两个导向边213，两个所述导向边213沿着所述接触板2插入方向的前端相对向内侧倾斜。
进一步具体地，所述导向边213为直斜边或弧形边。在本实施例中，所述导向边213为直斜边。
在本实施例中，所述凸台21成型在所述接触板2的板面上。具体地，在本实施例中，考虑到所述躯壳1的所述弹性臂11受空间所限只能成型在所述插槽13的下方，故所述凸台21成型在所述接触板2的下板面上，但是后续进行改进后的所述弹性臂11可以成型在所述插槽13的上方时，所述凸台21即可以成型在所述接触板2的上板面上，这也落入到本发明的保护范围之内。
如图29-31所示，所述凸台21的截面形状为三角形，所述三角形的底边为所述被 抵触边211，所述三角形的两斜边为所述导向边213。
如图30和图31给出了所述凸台21为三角形凸台的两种实施方式，图30中，所述弹性臂11沿所述接触板2插入方向的顶端为平直边，且两所述弹性臂11内侧角点为直角端点。图31中，所述弹性臂11沿所述接触板2插入方向的顶端为平直边，且两所述弹性臂11内侧角点为倒圆角。
作为所述凸台21的一种可替代方式，所述凸台21还可以为分体结构。如图33-35给出了所述凸台21为两个分体的三角形凸台，图33中，所述弹性臂11沿所述接触板2插入方向的顶端为平直面，且两所述弹性臂11内侧角点为直角端点，两分体三角形凸台的底边为平直边。图34中，所述弹性臂11沿所述接触板2插入方向的顶端为平直边，且两所述弹性臂11内侧角点为倒圆角，两分体三角形凸台的底边为平直边。图35中，所述弹性臂11沿所述接触板2插入方向的顶端为平直边，且两所述弹性臂11顶端内侧角点为倒斜边，两分体的三角形的外侧角点分别抵在两倒斜边上。
还有，如图28所示，在本实施例中，所述插槽13具有在与所述接触板2插入方向垂直且相互垂直的两个方向上对所述接触板2进行定位的配合结构。
在本实施例中，所述插槽13还对所述接触板2，在与所述接触板2插入方向相垂直的两个坐标方向上进行定位，所述配合结构包括在垂直于所述接触板2上下板面的方向上对所述接触板2进行定位的过盈配合结构。过盈配合结构定位可靠。
所述过盈配合结构包括成型在所述接触板2上的凸起22以及在所述接触板2插入所述插槽13后与所述凸起22卡紧的插槽槽壁。如图28中C处即为所述凸起22卡紧在插槽槽壁内形成过盈配合结构。
如图28所示，所述凸起22为弧形。
在本实施例中，所述配合结构还包括在与所述接触板2板面平行且垂直于所述接触板2插入方向的方向上对所述接触板2进行定位的间隙配合结构。间隙配合有利于所述接触板2的装配。
所述一定位置为所述接触板2插入到所述插槽13的沿所述接触板2插入方向的顶端位置。
根据以上所描述的结构，以下根据附图来说明本实施例的接触板固定结构的装配过程：
所述接触板2的装配分为三个阶段，如图29所示。代表所述接触板2的所述凸台21相对于代表躯壳1的所述弹性臂11自左向右运动。在导向装配阶段，如图29a所示，所述躯壳1的所述弹性臂11内侧壁与所述接触板2的所述凸台21的直斜边配合起到了充分的导向作用，装配过程的应力变化均衡、平稳；在过盈配合阶段，如图29b所示，在所述接触板2的所述凸台21的挤压作用下，所述躯壳1的所述弹性臂11向外侧弹性变形至最大。在倒扣形成阶段，如图29c所示，所述接触板1的所述凸台21的上下两个最高点越过所述躯壳1的所述弹性臂11两内侧前沿角点，所述弹性臂11随之向内侧弹性恢复，当所述弹性臂11弹性完全恢复时，所述弹性臂11的抵触边112与所述凸台21的所述被抵触边211形成倒扣锁止结构。
需要说明的是，由于所述接触板2是通过冲压模具冲压加工而成，因此，成型的凸台的角点一般为是个小圆角。
显然，上述实施例仅是为清楚地说明所作的举例，并非对实施方式的限定。对所属领域的普通技术人员来说，在上述说明的基础上还可做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。

Claims (32)

  1. 一种接触板固定结构,包括躯壳(1)和接触板(2)，所述躯壳(1)上成型有插槽(13)，所述插槽(13)在所述接触板(2)插入一定位置后限制所述接触板(2)不能继续沿其插入方向前进；其特征在于，所述接触板(2)上成型有凸台(21)，所述躯壳(1)在与所述凸台(21)相对应位置处成型有供所述凸台(21)插入的弹性卡槽，在所述接触板(2)插入所述插槽(13)内一定位置而被所述插槽(13)限制不能继续前进时，所述弹性卡槽与所述凸台(21)形成倒扣锁止结构，以使所述接触板(2)不能沿与其插入方向相反方向移动。
  2. 根据权利要求1所述的接触板固定结构，其特征在于：所述凸台(21)在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板(2)插入所述插槽(13)内一定位置而被所述插槽(13)限制不能继续前进时，所述凸台(21)与所述连续变形后未完全恢复的所述弹性卡槽形成所述倒扣锁止结构。
  3. 根据权利要求2所述的接触板固定结构，其特征在于：所述倒扣锁止结构包括成型在所述弹性卡槽上的锁止部以及成型在所述凸台(21)上与所述锁止部相配合的被锁止部。
  4. 根据权利要求3所述的接触板固定结构，其特征在于：所述弹性卡槽包括成型在所述躯壳(1)上的两个沿所述接触板(2)插入方向延伸的弹性臂(11)以及成型在两所述弹性臂(11)内侧壁之间的通道(12)。
  5. 根据权利要求4所述的接触板固定结构，其特征在于：所述通道(12)包括沿所述接触板(2)插入方向由宽逐渐变窄的第一部分(12a)和与所述第一部分(12a)连接的具有均匀截面的第二部分(12b)，所述第二部分(12b)位于所述接触板(12)插入方向的前端。
  6. 根据权利要求3-5中任一项所述的接触板固定结构，其特征在于：所述锁止部包括分别成型在两所述弹性臂(11)内侧壁的位于所述接触板(2)(2)插入方向顶部的两个抵触端(111)；所述被锁止部包括两个沿与所述接触板(2)插入方向相反方向延伸并相对向内侧倾斜的被抵触边(211)，所述抵触端(111)分别抵在相应的所述被抵触边(211)上。
  7. 根据权利要求6所述的接触板固定结构，其特征在于：所述抵触端(111)施加在所述被抵触边(211)上力的方向与所述接触板(2)插入方向形成的夹角(α)不大于40度，以使所述抵触端(111)与所述被抵触边(211)形成自锁。
  8. 根据权利要求7所述的接触板固定结构，其特征在于：所述被抵触边(211)为直斜边。
  9. 根据权利要求7所述的接触板固定结构，其特征在于：所述被抵触边(211)为弧形边。
  10. 根据权利要求9所述的接触板固定结构，其特征在于：所述弧形为圆弧形。
  11. 根据权利要求6-10中任一项所述的接触板固定结构，其特征在于：所述抵触端(111)为直角端点，或倒圆角，或倒斜边。
  12. 根据权利要求1所述的接触板固定结构，其特征在于：所述凸台(21)在插入所述弹性卡槽时挤压所述弹性卡槽连续变形，在所述接触板(2)插入所述插槽(13)内一定位置而被所述插槽(13)限制不能继续前进时，所述凸台(21)与所述连续变形后完全恢复的所述弹性卡槽形成所述倒扣锁止结构。
  13. 根据权利要求12所述的接触板固定结构，其特征在于：所述倒扣锁止结构包括成型在所述弹性卡槽上的锁止部以及成型在所述凸台(21)上与所述锁止部相配合的被锁止部。
  14. 根据权利要求13所述的接触板固定结构，其特征在于：所述弹性卡槽包括成型在所述躯壳(1)上的两个沿所述接触板(2)插入方向延伸的弹性臂(11)以及成型在两所述弹性臂(11)内侧壁之间的通道(12)。
  15. 根据权利要求14所述的接触板固定结构，其特征在于：所述通道(12)包括沿所述接触板(12)插入方向由宽逐渐变窄的第一部分(12a)和与所述第一部分(12a)连接的具有均匀截面的第二部分(12b)，所述第二部分(12b)位于所述接触板(12)插入方向的前端。
  16. 根据权利要求12-15中任一项所述的接触板固定结构，其特征在于：所述锁止部包括分别成型在所述弹性臂(11)的沿所述接触板(2)插入方向顶端的两个抵触边(112)，所述被锁止部为成型在所述凸台(21)沿所述接触板(2)插入方向后端的被抵触边(211)，所述抵触边(112)分别与相应的所述被抵触边(211)搭接，所述抵触边(112)对所述被抵触边(211)的支持力的方向与所述接触板(2)的插入方向平行。
  17. 根据权利要求16所述的接触板固定结构，其特征在于：所述抵触边(112)和所述被抵触边(211)分别为平直边。
  18. 根据权利要求4-17中任一项所述的接触板固定结构，其特征在于：所述凸台(21)还成型有位于所述被锁止部沿所述接触板(2)插入方向的前端的，用于引导所述凸台(21)插入所述通道(12)的导向部。
  19. 根据权利要求18所述的接触板固定结构，其特征在于：所述导向部在沿所述接触板(2)插入方向上由宽逐渐变窄。
  20. 根据权利要求19所述的接触板固定结构，其特征在于：所述导向部为两个导向边(213)，两个所述导向边(213)沿着所述接触板(2)插入方向的前端相对向内侧倾斜。
  21. 根据权利要求20所述的接触板固定结构，其特征在于：所述导向边(213)为直斜边或弧形边。
  22. 根据权利要求8-21中任一项所述的接触板固定结构，其特征在于：所述凸台(21)的截面形状为五边形，或四边形。
  23. 根据权利要求8-21中任一项所述的接触板固定结构，其特征在于：所述凸台(21)的截面形状为圆形。
  24. 根据权利要求8-21中任一项所述的接触板固定结构，其特征在于：所述凸台(21)的截面形状为三角形。
  25. 根据权利要求1-24中任一项所述的接触板固定结构，其特征在于：所述凸台(21)成型在所述接触板(2)的板面上。
  26. 根据权利要求22-24中任一项所述的接触板固定结构，其特征在于：所述凸台(21)为分体结构。
  27. 根据权利要求1-26中任一项所述的接触板固定结构，其特征在于：所述插槽(13)具有在与所述接触板(2)插入方向垂直且相互垂直的两个方向上对所述接触板(2)进行定位的配合结构。
  28. 根据权利要求27所述的接触板固定结构，其特征在于：所述配合结构包括在垂直于所述接触板(2)上下板面的方向上对所述接触板(2)进行定位的过盈配合结构。
  29. 根据权利要求28所述的接触板固定结构，其特征在于：所述过盈配合结构包括成型在所述接触板(2)上的凸起(22)以及在所述接触板(2)插入所述插槽(13)后与所述凸起(22)卡紧的插槽槽壁。
  30. 根据权利要求29所述的接触板固定结构，其特征在于：所述凸起(22)为弧形。
  31. 根据权利要求28-30中任一项所述的接触板固定结构，其特征在于：所述配合结构还包括在与所述接触板(2)板面平行且垂直于所述接触板(2)插入方向的方向上对所述接触板(2)进行定位的间隙配合结构。
  32. 根据权利要求1-31中任一项所述的接触板固定结构，其特征在于：所述一定位置为所述接触板(2)插入到所述插槽(13)的沿所述接触板(2)插入方向的顶端位置。
PCT/CN2014/092768 2013-12-05 2014-12-02 接触板固定结构 WO2015081843A1 (zh)

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