CN115719683A - Electric switch - Google Patents

Abstract

The invention provides an electric switch, at least comprising an insulating shell and elements in the insulating shell, wherein the elements in the insulating shell are at least provided with contact parts, the contact parts are U-shaped grooves or mountain-shaped structures consisting of two groups of U-shaped grooves, the opening parts of the U-shaped grooves are larger than the size of the middle part or the bottom part, the contact parts are matched with correspondingly arranged conductive clamp parts, so that the clamping parts at two sides of the contact parts are forced to clamp the conductive clamp parts when the contact parts are inserted into the conductive clamp parts, the conductive clamp parts are further forced to clamp the conductive parts of the contact parts, the burning loss caused by electric arc generated by repulsion of the conductive clamp parts and the contact parts due to large current is prevented, and the short-time tolerance capability of the switch is improved; when the contact part is pulled out of the conductive clamping head part, the clamping force of the conductive clamping head part is released by the contact part, so that the contact part can be pulled out of the conductive clamping head part quickly, and the reliability of the switch operation capability is ensured.

Description

Electric switch

Technical Field

The invention relates to the field of low-voltage electrical appliances, in particular to an electric switch.

Background

The switch is the most important distribution equipment in a low-voltage distribution system, along with the continuous improvement of the requirements of power supply and power transmission and distribution equipment in power engineering, the performance requirements for the circuit protection switch are higher and higher, and the miniaturization, high performance, modularization and high reliability are the main development directions of the air switch at the present stage. The short-time endurance is an important index of the switch, and means that the maximum short-circuit current which can be borne by the switch within a certain time has a high requirement on the dynamic stability of the switch.

In a high-voltage direct-current energy storage system, short-circuit current can often reach hundreds of kiloamperes, so that large current flows through a conductive loop of a switch, large electric repulsion force is generated between moving and static contacts, if sufficient pressure does not exist between the contacts, the contacts can be repelled under the action of the electric repulsion force, electric arcs can be generated between the contacts, the contacts can be seriously ablated due to the existence of the electric arcs, even fusion welding is caused, permanent damage is caused to the switch, and disconnection failure is caused. If simply improve contact pressure through increaseing the spring and will cause operating device's load promotion by a wide margin, wearing and tearing aggravation by a wide margin leads to the operating device unreliable, how not giving operating device overweight load when improving contact pressure, it is the big difficult point of industry to improve the switch short-term tolerance ability and guarantee reliable operating device again.

Disclosure of Invention

In view of the above background, the present invention provides an electrical switch, in which a contact portion is configured in a U-shaped or mountain-shaped structure, and a conductive clamping portion is correspondingly configured, so that when the contact portion is inserted into the conductive clamping portion, the clamping portion on one side or both sides of the contact portion is forced to clamp the conductive clamping portion, and further the conductive clamping portion clamps a conductive portion on one side or in the middle of the contact portion, thereby preventing the conductive clamping portion and the contact portion from being repelled by a large current to generate burning loss caused by an arc, and improving short-time endurance of the switch.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides an electric switch, includes the component in insulating casing and the insulating casing at least, the component in the insulating casing is provided with at least and touches the head, it is U type groove or the mountain type structure of constituteing by two sets of U type grooves to touch the head, the opening in U type groove is bigger than the size of middle part or bottom.

Preferably, one side or two sides of the middle or bottom of the U-shaped groove are at least one bevel angle.

Preferably, one side or two sides of the middle part or the bottom of the U-shaped groove are at least one oblique angle, and the oblique angles are straight lines or/and circular arc lines.

Preferably, the contact portion is made of one material or at least two materials.

Preferably, the contact part is made of a conductive material or made of a conductive material and an insulating material together.

Preferably, when the contact part is made of a conductive material and an insulating material together, at least one side of the contact part is made of the conductive material, the other side of the contact part is made of the insulating material, or the two sides of the contact part are made of the insulating material and the conductive material is arranged in the middle of the contact part.

Preferably, when the contact part is a moving contact, the moving contact is a strip, and one end or two ends of the strip moving contact are provided with the contact parts.

Preferably, when the contact part is a static contact, one end of the static contact is provided with the contact part, and the other end is directly or indirectly connected with the wiring terminal.

Preferably, when the contact part is made of a conductive material and an insulating material together, the length of the side made of the conductive material is longer than that of the side made of the insulating material.

Preferably, the element inside the insulating housing is provided with at least a conductive clip part with a spring mating with the contact part.

Preferably, the conductive portion of the contact portion is inserted into or pulled out of the conductive clip portion.

Preferably, the conductive chuck part is a full chuck or a half chuck.

Preferably, the full chuck is a conductive chuck part with elastic parts on two sides, and the half chuck is a hard conductor or a non-conductor with an elastic part on one side and a non-elastic part on the other side of the conductive chuck part.

Preferably, when the contact portion is inserted into the conductive clip portion, the oblique angle structure formed by the contact portion gradually pushes the head portion of the conductive clip portion towards the contact portion, so that the pressure of the conductive clip portion on the contact portion is gradually increased.

Preferably, the contact portions are arranged transversely or longitudinally.

Preferably, the conductive clip parts are arranged transversely or longitudinally.

Preferably, the element in the insulating shell further comprises an operating mechanism and a movable contact supporting insulating piece.

Preferably, the elements within the insulating housing include or do not include an overload protection device.

Preferably, the operating mechanism drives the moving contact supporting insulating member to drive the contact part to perform transverse or longitudinal movement for inserting or pulling out the conductive clip part.

Preferably, the insulating housing is provided with at least a base and a cover.

Preferably, the switch is of one-phase or two-phase or three-phase + N configuration.

The invention has the following beneficial effects:

1. the contact part is arranged into a U-shaped or mountain-shaped structure, and the conductive clamping head parts are correspondingly arranged, so that the clamping parts at two sides or one side of the contact part are enabled to clamp the conductive clamping head parts when the contact part is inserted into the conductive clamping head parts, the conductive clamping head parts are further enabled to clamp the conductive parts at one side or the middle of the contact part, the burning loss caused by electric arc generated by repulsion between the conductive clamping head parts and the contact part due to large current is prevented, and the short-time tolerance capability of the switch is improved.

2. Through setting the contact part into a U-shaped or mountain-shaped structure, when the contact part moves out of the conductive clamping head part, the U-shaped or mountain-shaped structure releases most clamping force of the conductive clamping head part on the contact part, so that the contact part is ensured to move out of the conductive clamping head part under the condition of light load, the abrasion between the conductive clamping head part and the contact part is reduced, and the reliability of the switch operation capability is improved.

3. The contact part is assembled by structural parts made of two different materials, so that the process is simple, the production cost is low, and the assembly is convenient;

4. the switch can be applied to various switches, such as circuit breakers, knife switches, isolating switches and the like, and is wide in application and easy to popularize.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of an internal structure of an electric switch according to a first embodiment of the present invention.

Fig. 2 is a force diagram of the insertion of the contact portion of an electrical switch into the conductive clip portion according to the first embodiment of the present invention.

Fig. 3 is a schematic structural view of a movable contact and a conductive clamping head of an electric switch according to a first embodiment of the present invention.

Fig. 4 is a force diagram of the insertion of the contact portion of an electrical switch into the conductive jaw portion of a second embodiment of the invention.

Fig. 5 is a force diagram of the insertion of the contact portion into the conductive clip portion of an electrical switch according to a third embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of an electrical switch according to a fourth embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a movable contact and a conductive clamping head of an electrical switch according to a fifth embodiment of the present invention.

Fig. 8 is a schematic diagram of the internal structure of an electric switch according to a sixth embodiment of the present invention.

Fig. 9 is a schematic structural view of a movable contact and a conductive clip of an electric switch according to a sixth embodiment of the present invention.

Fig. 10 is a schematic cross-sectional view of a contact portion of an electrical switch according to a sixth embodiment of the present invention inserted into a conductive clip portion.

Fig. 11 is a schematic diagram of the internal structure of an electric switch according to a seventh embodiment of the present invention.

Fig. 12 is a schematic view of a conductive clip part and a stationary contact of an electrical switch according to a seventh embodiment of the present invention.

Fig. 13 is a schematic cross-sectional view of an electrical switch according to a seventh embodiment of the present invention, in which the contact portion has a mountain-shaped structure.

Fig. 14 is a schematic cross-sectional view of a contact portion of an electric switch according to a seventh embodiment of the present invention, the contact portion having a U-shaped configuration.

Fig. 15 is a schematic diagram of the internal structure of an electric switch according to an eighth embodiment of the present invention.

Fig. 16 is a schematic structural view of a movable contact and a conductive clip of an electric switch according to an eighth embodiment of the present invention.

Fig. 17 is a schematic cross-sectional view of a contact portion of an electrical switch according to an eighth embodiment of the present invention inserted into a conductive clip portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For convenience of description, the height direction of the insulating housing 10 mentioned below corresponds to the Y direction shown in fig. 1 and 2, and the length direction of the insulating housing 10 corresponds to the Z direction shown in fig. 15, it should be noted that the directions or positional relationships indicated above are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

First embodiment

Referring to fig. 1, the present embodiment discloses an electrical switch, which includes an insulating housing 10 and an element located in the insulating housing 10, where the insulating housing 10 includes a base and a cover, the base and the cover together enclose to form a cavity, the element includes an operating mechanism 20, a wire inlet end 30, a wire outlet end 40, a conductive clip part 60 and a movable contact support insulator 70, the operating mechanism 20, the wire inlet end 30, the wire outlet end 40, a movable contact 50, the conductive clip part 60 and the movable contact support insulator 70 are all accommodated in the cavity, the conductive clip part 60 is a full clip, the full clip is a conductive clip part having elastic members on two sides, the wire inlet end 30 is electrically connected to the conductive clip part 60 through a first conductor, and the movable contact 50 is electrically connected to the wire outlet end 40 through a second conductor.

The operating mechanism 20 and the movable contact support insulating member 70 are longitudinally arranged along the height direction (i.e. the direction indicated by Y in fig. 1) of the insulating housing 10, and the operating mechanism 20 can drive the movable contact support insulating member 70 to drive the movable contact 50 to longitudinally rotate or translationally move along the height direction of the insulating housing 10 to insert or remove the conductive clip part 60.

Referring to fig. 2-3, the movable contact 50 is made of an integrated conductive material, one end of the movable contact 50 is provided with a contact portion a, the contact portion a is in a mountain shape, the contact portion a includes clamping portions 5012 located at two sides and a conductive portion 5011 located in the middle, two U-shaped grooves are formed between the clamping portions 5012 at two sides and the conductive portion 5011 in the middle, an opening of each U-shaped groove is larger than a width of the middle of the U-shaped groove, one side of the middle or the bottom of each U-shaped groove is an oblique angle, the oblique angles are straight lines, two sides of each U-shaped groove are acute angles, and when the contact portion is inserted into the conductive contact portion 60, the oblique angle structure formed by the contact portion gradually draws the head portion of the conductive contact portion 60 towards the contact portion, so that the pressure of the conductive contact portion 60 on the contact portion is gradually increased.

Specifically, the inner surface of the left clamping portion 5012 forms an acute angle θ with the left side of the conductive portion 5011, and the inner surface of the right clamping portion 5012 forms an acute angle θ with the right side of the conductive portion 5011.

In this embodiment, the movable contact 50 is a long strip, the contact portion is disposed at one end of the movable contact, the conductive clip portion 60 is correspondingly disposed in a mountain-shaped opening direction of the contact portion a, the conductive clip portion 60 includes four pairs of clip contact fingers 601, an elastic member 602, a support seat 603, a set screw 604 and a rivet 605, the clip contact fingers 601 are conductive bodies and are arranged in bilateral symmetry, and are respectively riveted and fixed on the elastic member 602 through the rivet 605, the elastic member 602 is fixed on the support seat 603 through the set screw 604, the clip contact fingers 601 are electrically connected with the wire inlet end 30 through the first conductor, the first conductor is preferably a flexible wire, and the clip contact fingers 601 are provided with a conductive contact surface 6011 and a head arc surface 6012.

As shown in fig. 2, a moving direction of the movable contact 50 longitudinally inserted into the conductive clip part 60 is defined as a Y direction, a left-right transverse moving direction of the clip contact finger 601 is defined as an X direction, when the movable contact 50 moves while being inserted into the conductive clip part 60, the conductive portion 5011 is firstly inserted into the conductive contact surface 6011 of the clip contact finger 601 and pushes the conductive contact surface 6011 of the clip contact finger 601 away from both sides along the X direction to generate an initial contact pressure, then an inner side surface of the clamping part 5012 contacts with the head arc surface 6012 of the clip contact finger 601, the contact part a is pressed by the operating mechanism 20 along the Y direction F1 to make the contact part a continue to move downward along the Y direction, at this time, the head arc surface 6012 of the clip contact finger 601 is tangent to the inner side surface 6012 of the clamping part 5012, the head arc surface 6012 is pressed by a pressure F2 perpendicular to the inner side surface of the clamping part 5012, the component FX of the pressure F2 along the X direction causes the head arc surface 6012 of the collet contact finger 601 to move toward the conductive body of the conductive portion 5011, so that the conductive contact surface 6011 of the collet contact finger 601 and the conductive body of the conductive portion 5011 are gradually clamped, until the component of the reaction force of the pressure F2 along the Y direction to F3 is balanced with the pressure F1 applied to the movable contact 50 (without gravity and friction), the contact a stops moving, the movable contact 50 and the conductive collet 60 are in a static balance state, and static mechanical analysis shows that the pressures F1= F3Sin θ, F2= F3 (a pair of forces with equal magnitude and opposite directions), FX = F2Cos θ, and FX = F1 an θ is obtained by substituting the formula into ctsolution, that is the clamping force of the collet contact 601, the pressure applied by the contact a and the inner side surface of the clamping portion 5012 and the side surface of the conductive portion 5011 form an acute angle When θ =45 °, ctan θ =1, when θ < 45 °, ctan θ > 1, and the acute angle θ is smaller, the larger the value of Ctan θ, therefore, the structure where the inner side surface of the clamping portion 5012 forms an acute angle θ with the side surface of the conductive portion 5011 can increase the pressing force along the Y direction of the contact portion a by several times and convert the pressing force along the X direction into the clamping force along the conductive clip portion 60, thereby ensuring that the temperature rise requirement and the short-circuit current tolerance in the case where the clip contact finger 601 carries the rated current are not repelled, and further improving the short-time tolerance of the electrical switch, and simultaneously when the operating mechanism 20 drives the supporting insulator 70 to drive the movable contact 50 to extract the conductive clip portion 60, the inner side surface of the clamping portion 5012 is rapidly separated from the arc surface 6012 of the head portion 601, thereby releasing most of the conductive clip portion 5011 of the conductive portion 60, and ensuring that the conductive clip portion 60 is extracted under the condition where the conductive clip portion 60 is under a smaller pressure, the condition, thereby greatly improving the reliability of the operation of the electrical switch.

The switch of the embodiment is a two-phase switch structure, and the switch structure can also be applied to a one-phase, three-phase or three-phase + N structure switch.

Second embodiment

Referring to fig. 4, the present embodiment discloses an electrical switch with another structure, which is different from the first embodiment in that one side of the middle and the bottom of the U-shaped groove is an oblique angle, and the oblique angle is a circular arc line.

Specifically, a U-shaped groove is formed between the clamping portion 5012 on the left side and the conductive portion 5011 in the middle, the middle and the bottom of the inner side wall of the clamping portion 5012 on the left side are arc surfaces, and the section of each arc surface is an oblique angle of an arc line; similarly, a U-shaped groove is formed between the right clamping portion 5012 and the middle conductive portion 5011, the middle portion and the bottom portion of the inner side wall of the right clamping portion 5012 are arc surfaces, and the cross section of each arc surface is an oblique angle of an arc line. The inner arc surface of the left clamping portion 5012 forms an acute angle with the left side of the conductive portion 5011, and the inner arc surface of the right clamping portion 5012 forms an acute angle with the right side of the conductive portion 5011.

Third embodiment

Referring to fig. 5, the difference between the electrical switch structure disclosed in this embodiment and the first and second embodiments is that the middle of one side of the U-shaped groove is an arc line, the bottom of the U-shaped groove is a straight line, and one side of the U-shaped groove is an oblique angle formed by combining the arc line and the straight line.

Specifically, a U-shaped groove is formed between the clamping portion 5012 on the left side and the conductive portion 5011 in the middle, the middle of the inner side wall of the clamping portion 5012 on the left side is an arc surface, the bottom of the inner side wall of the clamping portion 5012 on the left side is a flat inclined surface, and the middle and the bottom of the cross section of the inner side wall of the clamping portion 5012 on the left side are oblique angles formed by combining an arc line and a straight line; similarly, a U-shaped groove is formed between the right-side clamping portion 5012 and the middle conductive portion 5011, the middle portion of the inner side wall of the right-side clamping portion 5012 is an arc surface, the bottom portion thereof is a flat inclined surface, and the middle portion and the bottom portion of the cross section of the inner side wall of the right-side clamping portion 5012 are oblique angles formed by combining an arc line and a straight line.

Fourth embodiment

Referring to fig. 6-7, the present embodiment discloses an electrical switch with another structure, which is different from the first embodiment in that the contact portion includes a U-shaped clamping member 80 and a conductive member, the conductive member is disposed at an end portion of the movable contact 50, the U-shaped clamping member 80 is fixed on the conductive member, two side walls of the U-shaped clamping member 80 are disposed at two sides of the conductive member, and the U-shaped clamping member 80 and the conductive member together form a mountain-shaped structure of the contact portion.

Two U-shaped grooves are formed between two side walls of the U-shaped clamping piece 80 and the conductive piece, the opening parts of the two U-shaped grooves are larger than the middle part, one side of the middle part of each U-shaped groove is an oblique angle which is a straight line, and two side surfaces of each U-shaped groove are acute angles, and particularly, the inner side surface of one side wall of the U-shaped clamping piece 80 and one side of the conductive piece are acute angles; the inner side surface of the other side wall of the U-shaped clamping member 80 and the other side surface of the conductive member form an acute angle, although one side of the U-shaped groove in this embodiment forms an oblique angle, the oblique angle may also be an arc line or a combination of an arc line and a straight line.

In this embodiment, the U-shaped clamping member 80 is fixed to the movable contact 50 by a screw or a rivet, a mounting gap is provided between the U-shaped clamping member 80 and the conductive member, so that the U-shaped clamping member 80 can slightly swing relative to the movable contact 50, thereby ensuring that the U-shaped clamping member 80 contacts with the arc surfaces of the head portions on both sides of the conductive clip part 60, the U-shaped clamping member 80 is made of a conductive material or an insulating material, when the U-shaped clamping member 80 is made of an insulating material and the conductive member is made of a conductive material, the length of the conductive member is longer than that of the U-shaped clamping member 80, and the remaining mechanisms are similar to those described in the first embodiment, and are not described herein again.

Compared with the first embodiment, the electric switch provided by the embodiment has the advantages of simpler process structure, lower processing cost and stronger practicability.

Fifth embodiment

Referring to fig. 8-10, the present embodiment discloses an electrical switch, which includes an insulating housing 10, an operating mechanism 20, a wire inlet end 30, a wire outlet end 40, a movable contact 50, a conductive clip part 60, and a movable contact supporting insulator 70, wherein the operating mechanism 20, the wire inlet end 30, the wire outlet end 40, the movable contact 50, the conductive clip part 60, and the movable contact supporting insulator 70 are all accommodated in a cavity of the insulating housing 10, unlike the first embodiment, one end of the movable contact 50 is provided with a contact part a, the contact part a is U-shaped, an opening size of a U-shaped groove of the contact part a is larger than a middle size, one side of the U-shaped groove is an oblique angle, the oblique angle is a straight line, the contact part a includes a clamping part and a conductive part 5021, an included angle between an inner side surface 5022 of the clamping part and an inner side surface 5021 of the conductive part is an acute angle θ, the clamping part and the conductive part may be integrally formed of a conductive part, or the clamping part is formed of an insulating material, and when the clamping part is formed of an insulating material, the clamping part is longer than a length of the conductive part.

Correspondingly, the conductive clip part 60 is configured as a half clip structure corresponding to the U-shaped contact part, the half clip is a conductive clip part with an elastic part on one side, and an inelastic hard conductor or a non-conductor on the other side, when the moving contact is inserted downward into the conductive clip part, the inner side surface of the conductive part contacts with the conductive contact surface of the clip contact finger of the conductive clip part first, and then the inner side surface of the clamping part contacts with the head arc surface of the clip contact finger, so that the clip contact finger is clamped by the contact part step by step, and the mechanism of the matching action of the contact part and the conductive clip part is the same as that of the first embodiment, which is not described herein again.

Compared with the first embodiment and the second embodiment, the electric switch moving contact provided by the embodiment has the advantages of simpler structure, lower processing and material cost and suitability for occasions with lower cost requirements.

Sixth embodiment

Referring to fig. 11-14, the present embodiment discloses an electrical switch, which includes an insulating housing 10, an operating mechanism 20, a wire inlet end 30, a wire outlet end 40, a movable contact 50, a conductive clip part 60, a movable contact supporting insulating part 70, and a fixed contact 90, where the operating mechanism 20, the wire inlet end 30, the wire outlet end 40, the movable contact 50, the conductive clip part 60, the movable contact supporting insulating part 70, and the fixed contact 90 are all accommodated in a cavity of the insulating housing 10, and unlike the first embodiment, in the present embodiment, one end of the fixed contact 90 is provided with a contact part a, and the other end is connected to the wire inlet end 30, the contact part a is a U-shaped groove or a mountain-shaped structure composed of two groups of U-shaped grooves, and two sides of the U-shaped groove form an acute angle θ. The conductive clip part 60 is fixed to the movable contact 50 in a conductive connection manner, the conductive clip part 60 can move to insert or extract the contact part a of the fixed contact 90 along with the movable contact 50 under the driving of the operating mechanism 20, and the matching mechanism in the inserting and extracting process is similar to that described in the first embodiment, and is not described herein again.

Seventh embodiment

Referring to fig. 15-17, this embodiment discloses an electrical switch, which includes an insulating housing 10, an operating mechanism 20, a wire inlet end 30, a wire outlet end 40, a movable contact 50, a conductive clip part 60, and a movable contact supporting insulator 70, wherein the operating mechanism 20, the wire inlet end 30, the wire outlet end 40, the movable contact 50, the conductive clip part 60, and the movable contact supporting insulator 70 are all accommodated in a cavity of the insulating housing 10, unlike the first embodiment, in this embodiment, the operating mechanism 20 and the movable contact supporting insulator 70 are transversely arranged along a length direction (i.e. a direction Z in fig. 15) of the insulating housing 10, the operating mechanism 20 can drive the movable contact supporting insulator 70 to drive the movable contact 50 to transversely rotate or translate along the length direction of the insulating housing 10, the movable contact 50 is also provided with a U-shaped or mountain-shaped contact portion a as described in the first and third embodiments, the contact portions a are provided at two ends of the movable contact 50, the contact portion a is a U-shaped groove or a mountain-shaped structure composed of two groups of U-shaped grooves, the opening size of the U-shaped groove is larger than the middle support, one side of the U-shaped groove is an oblique angle, the oblique angle is a straight line, two sides of the U-shaped groove form an acute angle θ, the movable contact 50 is a cuboid extending from the contact portion a to the movable contact support insulator 70, the contact portion a is correspondingly provided with the conductive clip portion 60, the contact portion a can be inserted into or withdrawn from the conductive clip portion 60 under the driving of the operating mechanism 20 and the movable contact support insulator 70, and the matching action mechanism in the insertion and withdrawal process is similar to that in the first embodiment, and will not be described herein again.

Compared with the movable contact of the first embodiment which moves longitudinally, the movable contact of the electric switch of the embodiment moves transversely, and the mountain-shaped or U-shaped structure of the contact part can be suitable for various switches of different types, so that the application occasions of the electric switch are improved.

The above is merely a preferred embodiment of the present invention, and those skilled in the art can make various changes or modifications to the embodiment of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (21)

1. The utility model provides an electric switch, includes the component in insulating casing and the insulating casing at least, its characterized in that, component in the insulating casing is provided with at least the contact portion, the contact portion is U type groove or the mountain type structure of constituteing by two sets of U type grooves, the opening in U type groove is bigger than the size of middle part or bottom.

2. The electrical switch of claim 1, wherein one or both sides of the middle or bottom of said U-shaped groove are at least one beveled.

3. The electrical switch of claim 2, wherein one or both sides of the middle or bottom of the U-shaped groove are at least one bevel, and the bevel is a straight line or/and a circular arc.

4. An electrical switch according to claim 1, wherein said contact portion is made of one material or at least two materials.

5. An electrical switch according to claim 4, wherein said contact portion is made of an electrically conductive material or is made of an electrically conductive material and an insulating material.

6. An electrical switch according to claim 1 or 4, wherein the contacts are made of a conductive material and an insulating material, and at least one of the contacts is made of a conductive material, the other of the contacts is made of an insulating material, the two of the contacts are made of an insulating material, and the other of the contacts is made of a conductive material.

7. The electrical switch of claim 1, wherein when said contact portion is a movable contact, said movable contact is elongated, and one or both ends of said elongated movable contact are provided with contact portions.

8. The electrical switch of claim 1, wherein when the contact portion is a stationary contact, one end of the stationary contact is provided with the contact portion, and the other end is directly or indirectly connected to a connection terminal.

9. An electrical switch according to claim 4, wherein the contact portion is formed of a conductive material and an insulating material, and the length of the side of the conductive material is longer than the side of the insulating material.

10. An electrical switch according to claim 1, wherein the element in the insulating housing is provided with at least a conductive clip part with a resilient member mating with the contact part.

11. An electrical switch according to claim 10, wherein the conductive portion of the contact portion is inserted into or extracted from the conductive clip portion.

12. An electrical switch according to claim 10, wherein said conductive jaw portion is a full or half jaw.

13. The electrical switch of claim 12, wherein said full cartridge is a conductive cartridge having an elastic member on both sides, and said half cartridge is a rigid conductor or non-conductor having an elastic member on one side of the conductive cartridge and a non-elastic member on the other side of the conductive cartridge.

14. An electrical switch according to claim 1 or 10, wherein the contact portion is adapted to be inserted into the conductive clip portion such that the angled configuration of the contact portion gradually forces the head portion of the conductive clip portion towards the contact portion, thereby gradually increasing the pressure of the conductive clip portion against the contact portion.

15. An electrical switch according to claim 1, wherein said contacts are arranged laterally or longitudinally.

16. An electrical switch according to claim 10, wherein said conductive clip portions are disposed in either a transverse or longitudinal direction.

17. The electrical switch of claim 1, wherein said components within said insulating housing further comprise an operating mechanism, a movable contact supporting insulator.

18. An electrical switch according to claim 1, wherein the components within the insulating housing may or may not include overload protection means.

19. The electrical switch of claim 17, wherein said operating mechanism drives said moving contact support insulator to move said moving contact portion laterally or longitudinally to insert or remove said conductive clip portion.

20. An electrical switch according to claim 1, wherein the insulating housing is provided with at least a base and a cover.

21. An electrical switch according to claim 1, wherein said switch is of one or two phase or three phase + N configuration.

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