CN107749357B - Microswitch for preventing poor contact - Google Patents
Microswitch for preventing poor contact Download PDFInfo
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- CN107749357B CN107749357B CN201711259346.3A CN201711259346A CN107749357B CN 107749357 B CN107749357 B CN 107749357B CN 201711259346 A CN201711259346 A CN 201711259346A CN 107749357 B CN107749357 B CN 107749357B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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Abstract
The invention discloses a microswitch for preventing poor contact, which comprises a shell, wherein a common connector, an elastic assembly which is electrically connected with the common connector and can swing up and down, and a trigger assembly for driving the elastic assembly to move are arranged in the shell, the trigger assembly comprises a trigger rod, a support piece and a transfer block, wherein one end of the support piece is abutted against the lower end of the trigger rod, the other end of the support piece is abutted against the common connector or the shell, and one side of the transfer block is abutted against the elastic assembly, and the other side of the transfer block is abutted against the support piece and can swing. The elastic assembly is used as a driving mechanism of the switch to generate elastic force to realize switch switching, and the switching block and the supporting piece swing before the elastic assembly in the switching process, so that the phenomenon of poor contact or power failure of the elastic assembly when the elastic assembly jumps from normal close to normal open or from normal open to normal close is avoided, the industrial application is safer and more reliable, and the switch has wide application prospect.
Description
Technical Field
The invention relates to a switch, in particular to a microswitch for preventing poor contact.
Background
The microswitch is a switch having a minute contact interval and a snap action mechanism, which performs a switching action with a predetermined stroke and a predetermined force, covered with a case, and having a trigger lever outside thereof, and is called a microswitch because the contact pitch of the switch is relatively small. The external mechanical force acts on the action reed through a transmission element (a press pin, a button, a lever, a roller and the like), and when the action reed is displaced to a critical point, instantaneous action is generated, so that a movable contact at the tail end of the action reed is quickly connected with or disconnected from a fixed contact. When the acting force on the transmission element is removed, the action reed generates reverse action force, and when the reverse stroke of the transmission element reaches the action critical point of the reed, the reverse action is instantly finished. The micro switch has the advantages of small contact distance, short action stroke, small pressing power and quick on-off. The moving speed of the moving contact is independent of the moving speed of the transmission element.
Traditional micro-gap switch includes casing, panel, normally open connector, normal close connector, public connector and the movable sliding vane that switches between normally open connector and normal close connector, and the single shell fragment or the single spring of drive movable sliding vane action, and micro-gap switch that uses on the market at present has a great deal of defect because of the restriction of its self structure, can't satisfy a great deal of industry standard requirement, can not use in the higher occasion or the field of factor of safety requirement, and the market width is low. The specific defects are as follows:
(1) the forced separation between the moving contact and the static contact can not be realized, the requirements of industrial standards are not met, the safety coefficient of a switch is low, and the switch can not be used in occasions with safety field requirements, such as elevators and the like;
(2) through the deformation of a single metal elastic sheet or the tension of a single spring, elastic force is generated to realize the switching of the switch, dead point balance can occur in the process that the contact sheet is switched from normally closed to normally open at the switch jump critical position, so that the switch can have the phenomenon that the normally open or normally closed connector is not electrified or poor contact between a moving contact and a static contact occurs to cause the switch signal to flicker, and equipment cannot be used, for example, a household ice maker and the like.
Therefore, it is desired to solve the above problems.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a microswitch capable of preventing poor contact, which can solve the problem that a switch signal flickers due to non-electrification or poor contact between a moving contact and a static contact caused by a force balance state in the switching process of a switch.
The technical scheme is as follows: in order to achieve the purpose, the invention discloses a microswitch for preventing poor contact, which comprises a shell, wherein a common connector, an elastic assembly which is electrically connected with the common connector and can swing, and a trigger assembly for driving the elastic assembly to move to realize power on and power off are arranged in the shell, the trigger assembly comprises a trigger rod, a support piece which penetrates through the elastic assembly, one end of the support piece is abutted to the lower end of the trigger rod, the other end of the support piece is abutted to the common connector or the shell, and a switching block, one side of which is abutted to the elastic assembly, the other side of which is abutted to the support piece and can. This prevent contact failure's micro-gap switch adopts elastic component to produce elasticity as the actuating mechanism of switch and realizes the switch switching, and at the switching process, swings through switching piece and support piece earlier than elastic component, avoids elastic component to jump to normally open or normally open jump to the normally closed from the normally closed instantaneous contact failure or outage phenomenon appear, and the trade is applied safe and reliable more, has wide application prospect.
A first clamping groove matched with the elastic component is formed in one side face of the transfer block, and a boss matched with the supporting piece is arranged on the side face opposite to the side face. The boss of this switching piece cooperatees with support piece's second draw-in groove, and switching piece is prior to elastic component swing motion when the trigger lever pushes down proximity switch and triggers critical point, and the switching piece rotates and drives the elastic component swing simultaneously, avoids the switch to switch the in-process balance point that appears.
Preferably, a hook hole matched with the elastic component is formed in one side face of the adapter block, and a through hole is formed in the position, corresponding to the hook hole, of the support piece.
Preferably, the upper part of the switching block is provided with an anti-falling stop block for preventing the support piece from falling off, and the support piece is provided with an anti-falling notch matched with the anti-falling stop block at a position corresponding to the anti-falling stop block.
Furthermore, the bottom of the switching block is provided with a guide part for guiding the switching block to trigger and rotate, and a guide contact surface matched with the guide part is arranged on the shell at a position corresponding to the guide part.
Furthermore, the upper part of the switching block is provided with a reset guide surface for guiding the switching block to reset and rotate, and the public connector is provided with a reset contact surface matched with the reset guide surface at a position corresponding to the reset guide surface.
Furthermore, the adapter block is integrally formed by a metal sheet. The ultra-small specification of the part can be realized through the forming processing of the metal sheet with the thickness, so that the application of the micro switch is realized, the cost is saved, and the processing difficulty of the part is reduced.
Preferably, the folded edge at one end of the supporting piece abuts against the lower end of the trigger rod, and a second clamping groove which is connected with the transfer block in a matched mode is formed in the surface, close to the folded edge, of the supporting piece; the movable block of trip of support piece other end is on public connector, and the base edge that is close to trip department is the motion supporting part with public connector adaptation butt.
Furthermore, still be equipped with normally open connector and/or normally closed connector in the casing, elastic component includes and is connected with this public connector electricity, and with the movable contact spring that normally open connector and/or normally closed connector's stationary contact can communicate, the linkage is connected with the elastic component that produces elasticity drive movable contact spring motion on this movable contact spring.
Furthermore, the movable contact piece is provided with a clamping straight edge matched with the switching block and a falling-preventing boss for preventing the movable contact piece from falling off, and an assembling space for penetrating the support piece and the switching block is formed between the falling-preventing boss and the clamping straight edge.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: firstly, the microswitch for preventing poor contact adopts the elastic component as a driving mechanism of the switch to generate elastic force to realize switch switching, and in the switching process, the elastic component swings before the elastic component through the switching block and the supporting piece, so that the phenomenon of poor contact or power failure is avoided when the elastic component jumps from normal close to normal open or from normal open to normal close, the industrial application is safer and more reliable, and the microswitch has wide application prospect; secondly, a boss of the switching block is matched with a second clamping groove of the supporting piece, when the trigger rod is pressed down to approach a trigger critical point of the switch, the switching block swings in advance of the movable contact piece, the switching block rotates and drives the movable contact piece to swing at the same time, and a balance point is prevented from occurring in the switching process of the switch; finally, the designed switch is compact in structure and meets the safety application standard of most industries, and can be independently used as a switch, and also can be used as a core module to be installed on some industrial switch assemblies to realize diversified configurations, such as limit switches, safety door switches, explosion-proof switches, foot switches and the like.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic diagram of an internal structure of embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of an elastic member according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the installation of the elastic member according to embodiment 1 of the present invention;
FIG. 5 is a schematic structural view of a supporting member according to embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of a transfer block in embodiment 1 of the present invention;
FIG. 7 is a schematic view showing the structure of a common connector in embodiment 1 of the present invention;
FIG. 8 is an enlarged schematic view of FIG. 2;
FIG. 9 is a schematic view showing the internal structure of example 1 of the present invention with the casing removed;
FIG. 10 is a schematic view of a partial explosion in example 1 of the present invention;
FIG. 11 is a schematic view showing another internal structure in embodiment 1 of the present invention;
FIG. 12 is an enlarged schematic view of FIG. 11;
FIG. 13 is a schematic structural view of another supporting member according to embodiment 1 of the present invention;
FIG. 14 is a schematic structural diagram of another transfer block in embodiment 1 of the present invention;
FIG. 15 is a schematic view showing the internal structure of embodiment 2 of the present invention;
fig. 16 is a schematic structural view of the movable contact piece of embodiment 2 of the present invention;
FIG. 17 is a schematic view showing the internal structure of embodiment 3 of the present invention;
FIG. 18 is a schematic view showing the internal structure of example 3 of the present invention with the casing removed;
fig. 19 is a schematic structural view of the movable contact piece of embodiment 3 of the present invention;
FIG. 20 is a schematic structural diagram of a transfer block in embodiment 3 of the present invention;
FIG. 21 is a schematic structural view of a support member according to embodiment 3 of the present invention;
FIG. 22 is a schematic view showing the structure of a common connector in embodiment 3 of the present invention;
fig. 23 is a schematic structural diagram of embodiment 4 of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
As shown in fig. 1 and fig. 2, the microswitch for preventing poor contact comprises a shell 1 and a surface cover 9 matched with the shell 1, wherein a normally open connector 10, a normally closed connector 11, a common connector 2, an elastic assembly 3, a trigger assembly, a forced separation transition piece 7 and a forced separation deflector rod 8 are arranged in the shell. A normally open connector 10, a normally closed connector 11 and a public connector 2 with one end extending out of the shell are arranged in the shell 1, an elastic component 3 which is electrically connected with the public connector 2 and is correspondingly arranged between static contacts of the normally open connector 10 and the normally closed connector 11 and can be switched and communicated is arranged in the shell 1, and a trigger component for driving the elastic component 3 to move to realize power on and power off is arranged in the shell; the trigger assembly comprises a trigger rod 4, a support piece 5 and a transfer block 6, wherein one end of the support piece penetrates through the elastic assembly 3 and is abutted to the lower end of the trigger rod 4, the other end of the support piece is abutted to the common connector 2, one side of the transfer block is abutted to the elastic assembly 3, the other side of the transfer block is abutted to the support piece 5, and the transfer block can swing.
One ends of the normally open connector 10, the normally closed connector 11 and the public connector 2 are located in the shell 1, the other ends of the normally open connector 10, the normally closed connector 11 and the public connector 2 extend out of the shell to serve as switch terminals, and static contacts used for being conducted with the elastic assembly 3 are arranged on the normally open connector 10 and the normally closed connector 11 respectively. The normally open connector 10 and the normally closed connector 11 are positioned on the same side of the shell 1 in parallel, the common connector 2 is positioned on the other side of the shell 1, and a normally open contact positioned below the elastic component 3 is arranged at the left end of the normally open connector 10 and used for being connected with or disconnected from the elastic component 3; the left end of the normally closed connector 11 is provided with a normally closed contact positioned above the elastic component 3 and used for realizing conduction or disconnection with the elastic component 3. The elastic component 3 is abutted against the public connector 2 to realize electric connection with the public connector and is correspondingly arranged between static contacts of the normally open connector 10 and the normally closed connector 11 to be switched and communicated, and the elastic component 3 is switched and communicated with the normally open connector 10 and the normally closed connector 11 to realize switching of a switch.
As shown in fig. 3 and 4, the elastic assembly 3 of the present invention includes a moving contact 301 and an elastic member, the elastic member is a tongue piece 302 integrally formed with the moving contact 301, one end of the tongue piece 302 is integrally formed with the moving contact 301, and the other end is freely cantilevered, wherein the free end of the tongue piece 302 abuts against the common connector 2 to realize electrical connection with the common connector 2; the movable contact piece 301 and the tongue piece 302 are of an integral structure. One end of the movable contact piece 301 is provided with a contact structure as a movable contact, the movable contact piece 301 is a sheet structure with a middle hollow area, the hollow area on one side of the sheet structure close to the contact structure is integrated with one end of the tongue piece, the hollow area close to the free cantilever end of the tongue piece is provided with a clamping straight edge 304 matched with the switching block 6, the part close to the clamping straight edge 304 is also provided with a falling-preventing boss 305 used for preventing the movable contact piece 301 from falling off, and an assembly space used for penetrating the support piece 5 and the switching block 6 is formed between the falling-preventing boss 305 and the clamping straight edge 304. The other end of the free cantilever of the tongue piece and the drop-preventing projection 305 form an assembly space for passing the common connector 2 therethrough. The two long edges at the outer side of the movable contact piece 301 are bent outwards to form a standing plate 311 with a shoulder 310, and the standing plate 311 can be used for enhancing the strength of the movable contact piece and preventing deformation.
As shown in fig. 5, 6 and 8, the supporting member 5 of the present invention is a bent member, and one end of the supporting member 5 has a folded edge 501 and the other end has a hook 503. The hem 501 abuts against the lower end of the trigger rod 4, and a second clamping groove 502 which is connected with the boss 602 on the adapter block 6 in a matched mode is formed in the surface, close to the hem 501. The hook 503 at the other end of the support 5 is movably clamped on the notch 202 of the public connector 2, and the bottom edge 504 close to the hook 503 is a motion supporting part adapted and abutted with the public connector 2. A first clamping groove 601 matched with the clamping straight edge 303 of the movable contact piece 301 is formed in one side face of the adapter block 6, and a boss 602 matched with the second clamping groove 502 of the supporting piece 5 is arranged on the side face opposite to the side face. The boss of this switching piece cooperatees with support piece's second draw-in groove 502, and the switching piece is earlier in the movable contact spring swing motion when the trigger lever pushes down proximity switch and triggers the critical point, and the switching piece rotates and drives the movable contact spring swing simultaneously, avoids the switch to switch the in-process balance point that appears. As shown in fig. 11 to 14, the adaptor block 6 of the present invention further includes a falling-off prevention stopper 603 for preventing the support 5 from falling off, and a corresponding falling-off prevention notch 505 is formed in the support 5 at a position corresponding to the falling-off prevention stopper 603. As shown in fig. 6 and 8, the bottom of the adapter block 6 has a guiding portion 606 for guiding the adapter block 6 to trigger rotation, and a corresponding guiding contact surface 101 is provided on the housing 1 at a position corresponding to the guiding portion 606. During the depression of the trigger lever, the guide 606 of the adapter block 6 comes into contact with the guide contact surface 101 of the housing 1 and rotates. As shown in fig. 7 and 8, the transfer block 6 has a reset guide surface 607 at the upper part thereof for guiding the transfer block 6 to rotate for reset, and a reset contact surface 204 corresponding to the reset guide surface 607 on the common connector 2. During the reset of the trigger lever, the reset guide surface 607 of the adapter block 6 contacts the reset contact surface 204 of the common connector 2 and performs reset rotation. The adapter block 6 is integrally formed from sheet metal. The ultra-small specification of the part can be realized through the forming processing of the metal sheet with the thickness, so that the application of the micro switch is realized, the cost is saved, and the processing difficulty of the part is reduced.
As shown in fig. 2 and fig. 9, a forced separation transition piece 7 and a forced separation shift lever 8 which can rotate and are linked with each other are arranged in the shell 1 of the present invention, the forced separation transition piece 7 has a shift end matched with the trigger rod 4, and the forced separation shift lever 8 has a separation end located above the elastic component 3; the trigger rod 4 moves downwards to push the poking end to drive the forced separation transition piece 7 to rotate anticlockwise, and the forced separation transition piece 7 is linked to trigger the forced separation poking rod 8 to rotate clockwise, so that the separation end pushes the elastic component 3 to move downwards. The trigger rod 4 is provided with a trigger groove 401 matched with the toggle end of the forced separation transition piece 7, and the trigger rod 4 pushes the toggle end when moving downwards until the upper edge of the trigger groove 401 is contacted with the toggle end. As shown in fig. 10, the forcible separation transition piece 7 is rotatably connected to the common connector 2, and the common connector 2 is provided with a connecting rod 201 for passing through the forcible separation transition piece 7. The forced separation shift lever 8 is rotatably connected to the housing 1. This prevent micro-gap switch of contact failure utilizes forced separation transition piece and forced separation driving lever to realize the forced separation between normally closed contact and the movable contact piece among the switch switching process, has improved the factor of safety of switch, satisfies safety switch trade user demand.
As shown in fig. 2, the working process of the present invention is as follows:
the trigger lever is pressed down: the trigger rod 4 moves downwards under the action of external force, the lower surface of the trigger rod 4 contacts with the upper surface of the support piece to drive the support piece 5 to rotate around the bottom edge 504 of the movement support part, the boss 602 of the switching block 6 is matched with the second clamping groove 502 of the support piece 5 to drive the switching block 6 to move downwards together, the first clamping groove 601 of the switching block 6 is matched with the clamping straight edge 303 of the movable contact piece 301, so that the movable contact piece 301 is driven to move downwards, and the movable contact piece 301 enables the movable contact and the normally closed stationary contact to keep in contact and electrify under the action of elastic force. When the switch is in a jump critical state, the switching block 6 is in contact rotation with the shell 1, the boss 602 of the moving rotating block 6 is perpendicular to the notch 202 of the public end connector 2 and rapidly rotates downwards, the switching block 6 rotates downwards and simultaneously drives the movable contact piece 301 to rotate, the movable contact piece 301 is rapidly switched from the normally closed fixed contact to the normally open fixed contact, so that poor contact or power failure phenomena are avoided at the jump position of the switch, the trigger rod 4 continues to move downwards, the upper edge of the trigger groove 401 of the trigger rod 4 is in contact with the poking end of the forced separation transition piece 7 to push the forced separation transition piece 7, the forced separation transition piece 7 rotates anticlockwise, the forced separation transition piece 7 is in contact with the forced separation poking rod 8, the forced separation poking rod 8 is enabled to rotate clockwise, and if the movable contact piece does not jump, the forced separation poking rod 8 can forcibly separate the.
The reset process of the trigger lever is as follows: in the reset process of the trigger lever 4 under the action of the elastic force of the elastic component 3, when the switch is in a jump critical state, the switching block 6 is in contact rotation with the public end connector 2, the boss 602 of the switching block 6 is perpendicular to the notch 202 of the public end connector 2 and rapidly rotates upwards, the switching block 6 rotates upwards and simultaneously drives the movable contact 301 to rotate, the movable contact 301 is rapidly switched from the normally open stationary contact to the normally closed stationary contact, so that poor contact or power failure between the stationary contact and the stationary contact is avoided at a switch jump position, the upward force generated by the switch jump causes the forced separation shift lever 8 to rotate anticlockwise, and the switch continues to return until stopping.
This prevent micro-gap switch of contact failure adopts the movable contact spring to produce elasticity as the actuating mechanism of switch and realizes the switch switching, and at the switching process, swings through switching piece and support piece earlier than the movable contact spring, avoids the movable contact spring to jump to normally open or normally open jump to normally closed from the normally closed instantaneous contact failure or outage phenomenon appear, and the trade is applied safe and reliable more, has wide application prospect.
Example 2
As shown in fig. 15 and 16, the structure of embodiment 2 is the same as that of embodiment 1, except that: the elastic member 3 of the present invention includes a movable contact piece 301 and a spring piece 303 having one end abutting on the movable contact piece 301 and the other end abutting on the common connector 3. One end of the movable contact piece 301 can be provided with a contact structure as a movable contact, the movable contact piece 301 is a sheet structure with a middle hollow area, the hollow area on one side of the sheet structure, which is close to the contact structure, is provided with a reed connecting groove 306 which is abutted against a reed, the hollow area opposite to the reed connecting groove 306 is provided with a clamping straight edge 304 which is matched with the adapter block 6, the part which is close to the clamping straight edge 304 is also provided with a falling-preventing boss 305 for preventing the movable contact piece 301 from falling off, and an assembling space for penetrating the support 5 and the adapter block 6 is formed between the falling-preventing boss 305 and the clamping straight edge 304. One end of the reed 303 is abutted against the reed connecting groove 306, and an assembly space for penetrating the public connector 2 is formed between the other end of the free cantilever and the anti-falling boss 305; the free cantilevered end of the spring 303 abuts the second notch 203 in the common connector 2. The two long edges at the outer side of the movable contact piece 301 are bent outwards to form a standing plate 311 with a shoulder 310, and the standing plate 311 can be used for enhancing the strength of the movable contact piece and preventing deformation.
The working process is as follows: same as in example 1.
Example 3
As shown in fig. 17 to 20, the structure of embodiment 3 is the same as that of embodiment 1, except that: the trigger component comprises a trigger rod 4, a support piece 5 and a transfer block 6, wherein one end of the support piece is abutted to the lower end of the trigger rod 4, the other end of the support piece is abutted to the public connector 2, one side of the transfer block is abutted to the elastic component 3, the other side of the transfer block is abutted to the support piece 5, and the transfer block can swing. The elastic component 3 comprises a movable contact piece 301 and a tension spring 307, one end of which is hooked on the movable contact piece 301, and the other end of which is hooked on a hooking hole 604 on the adapter block 6. The movable contact piece 301 is provided with a tension spring connecting hole 308 hooked with the tension spring 307 and a connecting edge 309 abutted with the common connector 2. As shown in fig. 21, a through hole 506 is formed on the support 5 at a position corresponding to the hooking hole 604. As shown in fig. 22, the second notch 203 of the public connector is connected with the notch 202 into a whole, and the hook 503 of the supporting member is movably clamped at the edge of the notch 202 of the public connector; one end of the tension spring 307 is hooked with the tension spring connecting hole 308 on the movable contact 301, and the other end is hooked with the hooking hole 604 on the switching block 6 through the second notch 203 of the common connector 2 and the through hole 506 of the supporting piece.
The working process is as follows: same as in example 1.
Example 4
As shown in fig. 21, the structure of embodiment 4 is the same as that of embodiment 1, except that: an elastic return element for returning the support element 5 is also arranged in the housing 1, and comprises a spring 12, and the spring 12 is abutted against the lower part of the support element 5.
The working process is as follows: same as in example 1.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "inner", "outer", and the like refer to orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that are conventionally used for placing products of the present invention, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention. It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (9)
1. A microswitch for preventing poor contact is characterized in that: the power supply device comprises a shell (1), wherein a public connector (2), an elastic assembly (3) which is electrically connected with the public connector (2) and can swing and a trigger assembly which is used for driving the elastic assembly (3) to move to realize power on and off are arranged in the shell (1), the trigger assembly comprises a trigger rod (4), a support piece (5) of which one end is abutted against the lower end of the trigger rod (4) and the other end is abutted against the public connector (2) or the shell (1), and a switching block (6) of which one side is abutted against the elastic assembly (3) and the other side is abutted against the support piece (5) and can swing; the bottom of the transfer block (6) is provided with a guide part (606) for guiding and triggering rotation, and a matched guide contact surface (101) is arranged on the shell (1) at a position corresponding to the guide part (606).
2. The micro switch for preventing poor contact according to claim 1, wherein: a first clamping groove (601) matched with the elastic component (3) is formed in one side face of the transfer block (6), and a boss (602) matched with the supporting piece (5) is arranged on the side face opposite to the side face.
3. The micro switch for preventing poor contact according to claim 1, wherein: one side surface of the adapter block (6) is provided with a hooking hole (604) matched with the elastic component (3), and a through hole (506) is formed in the position, corresponding to the hooking hole (604), on the support piece (5).
4. The micro switch for preventing poor contact according to claim 1, wherein: the upper part of the transfer block (6) is provided with an anti-falling stop block (603) for preventing the transfer block (6) from falling off from the support piece (5), and the support piece (5) is provided with an anti-falling notch (505) matched with the anti-falling stop block (603).
5. The micro switch for preventing poor contact according to claim 1, wherein: the transfer block (6) is provided with a reset guide surface (607) for guiding the transfer block (6) to reset and rotate, and the common connector (2) is provided with a reset contact surface (204) which is matched with the reset guide surface (607) at the position corresponding to the reset guide surface.
6. The micro switch according to any one of claims 1 to 5, wherein: the transfer block (6) is integrally formed by a metal sheet.
7. The micro switch for preventing poor contact according to claim 1, wherein: a folded edge (501) at one end of the support (5) abuts against the lower end of the trigger rod (4), and a second clamping groove (502) which is in adaptive connection with the switching block (6) is formed in the surface close to the folded edge (501); the hook (503) at the other end of the support piece (5) can movably abut against the public connector (2), and the bottom edge (504) close to the hook (503) is a motion supporting part which is in fit abutting joint with the public connector (2).
8. The micro switch for preventing poor contact according to claim 1, wherein: the shell (1) is also internally provided with a normally open connector (10) and/or a normally closed connector (11), the elastic assembly (3) comprises a movable contact piece (301) which is electrically connected with the common connector (2) and can be communicated with a fixed contact of the normally open connector (10) and/or the normally closed connector (11), and the movable contact piece (301) is connected with an elastic piece for generating elastic force to drive the movable contact piece (301) to move in a linkage manner.
9. The micro switch for preventing poor contact according to claim 8, wherein: the movable contact piece (301) is provided with a clamping straight edge (304) matched with the switching block (6) and an anti-falling boss (305) for preventing the movable contact piece from falling off, and an assembling space for penetrating the support piece (5) and the switching block (6) is formed between the anti-falling boss (305) and the clamping straight edge (304).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259346.3A CN107749357B (en) | 2017-12-04 | 2017-12-04 | Microswitch for preventing poor contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259346.3A CN107749357B (en) | 2017-12-04 | 2017-12-04 | Microswitch for preventing poor contact |
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| Publication Number | Publication Date |
|---|---|
| CN107749357A CN107749357A (en) | 2018-03-02 |
| CN107749357B true CN107749357B (en) | 2020-10-02 |
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| CN201711259346.3A Active CN107749357B (en) | 2017-12-04 | 2017-12-04 | Microswitch for preventing poor contact |
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| CN1093317C (en) * | 1996-10-15 | 2002-10-23 | 欧姆龙公司 | Switching device |
| FR2862809B1 (en) * | 2003-11-20 | 2006-03-10 | Crouzet Automatismes | MICROSWITCH |
| KR101016212B1 (en) * | 2008-10-23 | 2011-02-25 | 거성엔지니어링 주식회사 | Micro switch |
| CN201298474Y (en) * | 2008-12-05 | 2009-08-26 | 郑建中 | Microswitch |
| JP5691584B2 (en) * | 2010-07-05 | 2015-04-01 | オムロン株式会社 | switch |
| CN202796570U (en) * | 2012-09-17 | 2013-03-13 | 宁波嘉林电子有限公司 | Synchronous twin microswitch |
| CN204045416U (en) * | 2014-07-09 | 2014-12-24 | 东莞市华精电子有限公司 | A kind of spring plate microswitch |
| CN107017107B (en) * | 2017-06-05 | 2018-12-25 | 漳州聚安美电气科技有限公司 | The double limit universal switches of the fine motion of dual spring |
| CN207542086U (en) * | 2017-12-04 | 2018-06-26 | 漳州聚安美电气科技有限公司 | A kind of microswitch of preventing poor contact |
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2017
- 2017-12-04 CN CN201711259346.3A patent/CN107749357B/en active Active
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| CN107749357A (en) | 2018-03-02 |
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