CN218957579U - Micro-gap switch of installation stability - Google Patents

Abstract

The utility model relates to a stably-installed micro switch which comprises a driving rod, a shell, a button, a public terminal, a normally-closed terminal and a normally-open terminal, wherein the normally-open terminal and the normally-closed terminal are both positioned on the right side of the shell, the driving rod is rotatably installed on the upper side of the shell, the button is positioned on a rotating track of the driving rod, the micro switch further comprises a first fixed contact and a second fixed contact, a support is arranged in the shell, a first slot and a second slot are respectively arranged on the support, the first slot is in interference fit with the normally-closed terminal, the second slot is in interference fit with the normally-open terminal, a moving contact is arranged on the public terminal, and the moving contact is positioned between the first fixed contact and the second fixed contact. By adopting the scheme, the micro switch is provided, and the normally-used installation stability is avoided because the normally-closed terminal and the normally-open terminal shake when in use by arranging the bracket in the shell to limit and fix the positions of the normally-closed terminal and the normally-open terminal.

Description

Micro-gap switch of installation stability

Technical Field

The utility model relates to the field of micro switches, in particular to a stably-installed micro switch.

Background

The micro switch is a kind of switch with micro contact interval and fast acting mechanism, and is covered with casing and has driving rod with relatively small contact interval, so that the micro switch is also called sensitive switch.

Chinese patent CN202121544727.8 discloses a high-voltage heavy-current micro switch, which sets up a magnet through the side of moving contact, so that the generated arc will be drawn and repelled in two directions due to the influence of magnetic field, so that the arc track becomes longer, the arc is extinguished more quickly, the contact loss is reduced, and the electrical life is prolonged.

However, in the matching process of the movable contact and one of the fixed contacts, vibration or excessive button pressing pressure caused by the use environment of the micro switch may cause shaking of the reed and the movable contact, and shaking of the reed and the movable contact may also drive the fixed contact positioned on the normally closed terminal and the normally open terminal to shake, thereby affecting normal use of the micro switch.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the micro switch which is stable to install and prevents the normally-closed terminal and the normally-open terminal from shaking when in use by arranging the bracket in the shell so as to limit and fix the positions of the normally-closed terminal and the normally-open terminal.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel electric power transmission device is characterized by comprising a driving rod, a shell, a button, a public terminal, a normally closed terminal and a normally open terminal, wherein the normally open terminal and the normally closed terminal are both positioned on the right side of the shell, the driving rod is rotatably arranged on the upper side of the shell, the button is positioned on the rotating track of the driving rod, and the normally closed terminal and the normally open terminal are correspondingly distributed from top to bottom, and the novel electric power transmission device is characterized in that: still including being located the first stationary contact on the normally closed terminal and being located the second stationary contact on the normally open terminal, fixed mounting has the support in the casing, be provided with the first slot that supplies the normally closed terminal to wear to establish and the second slot that supplies the normally open terminal to wear to establish on the support respectively, first slot and normally closed terminal interference fit, second slot and normally open terminal interference fit, be provided with the moving contact on the common terminal, the moving contact is located between first stationary contact and the second stationary contact.

The utility model is further provided with: the normally open terminal sequentially comprises a first connecting section, a second connecting section and a third connecting section from left to right, wherein the second connecting section is mutually perpendicular to the third connecting section, the third connecting section penetrates through the second slot and is in interference fit with the second slot, a third slot communicated with the second slot is arranged on the support, and the second connecting section penetrates through the third slot.

The utility model is further provided with: the public terminal comprises a first fixed section and a second fixed section, a fourth slot for the first fixed section to penetrate is arranged below the second slot, a first matching hole for the second fixed contact to penetrate is arranged on the third connecting section, a second matching hole is arranged on the support corresponding to the first matching hole, and the second fixed contact is fixedly arranged on the third connecting section and the lower end face of the second fixed contact abuts against the upper end face of the fixed section.

The utility model is further provided with: still include first wire, second wire and third wire, the casing left side from the top down is provided with first perforation, second perforation and third perforation respectively, the casing is located first fenestrate right side and is provided with the encapsulating groove, encapsulating groove and first perforation, second perforation and third perforation intercommunication each other, first wire wears to establish first perforation and with normally closed terminal fixed connection, second wire wears to establish second perforation and with first linkage segment fixed connection, third wire wears to establish third perforation and with first fixed segment fixed connection.

The utility model is further provided with: still include reed, copper son and movable piece, the reed is located between movable contact and the common terminal, be provided with first through groove on the second fixed section, the one end and the movable contact fixed connection of reed, other end fixed mounting just wears to establish first through groove in the movable piece, copper son is including the section of pressing that is located the button below, the up end of pressing the section offsets with the lower terminal surface of button, be provided with the second through groove on the second fixed section, the second through groove is worn to establish to copper son's one end, presses section fixed mounting in the movable piece.

The utility model is further provided with: still include sealing washer and retainer plate, be provided with the movable groove that supplies the vertical activity of button on the casing, the button bottom is provided with the location section, the radius of location section is greater than the radius of movable groove, the retainer plate is located the location section top, the sealing washer includes that first section of wearing to establish and second wear to establish the section, be provided with the spread groove of inwards facing on the button, the second wears to establish the section cover and establishes the spread groove and with spread groove fixed connection, first section fixed mounting wears to establish on the retainer plate.

The utility model is further provided with: the positioning ring and the sealing ring are made of silica gel, and the circumference of the positioning ring is fixedly connected with the shell.

Through adopting above-mentioned technical scheme, because normally closed terminal and the first slot interference fit on the support, normally open terminal and the second slot interference fit on the support, in micro-gap switch's use, when service environment causes to cause vibration to micro-gap switch or presses button pressure too big and cause reed and moving contact's rocking, because normally closed terminal and normally open terminal can be stabilized and restricted and fix on the support, can not be influenced and produce vertical rocking thereby influence micro-gap switch's normal use.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of an embodiment of the present utility model;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is an enlarged view of B in FIG. 1;

FIG. 4 is an enlarged view of C in FIG. 1;

fig. 5 is an enlarged view of D in fig. 1.

In the figure: 1-actuating lever, 2-housing, 3-button, 4-common terminal, 5-normally closed terminal, 6-normally open terminal, 7-first fixed contact, 8-second fixed contact, 9-movable contact, 10-first slot, 11-second slot, 12-first connecting section, 13-second connecting section, 14-third slot, 15-first fixed section, 16-second fixed section, 17-fourth slot, 18-first mating hole, 19-second mating hole, 20-first wire, 21-second wire, 22-third wire, 23-first through hole, 24-second through hole, 25-third through hole, 26-glue-pouring slot, 27-reed, 28-copper seed, 29-movable piece, 30-first through slot, 31-pressing section, 32-second through slot, 33-sealing ring, 34-positioning ring, 35-movable slot, 36-positioning section, 37-first through section, 38-second through section, 39-connecting slot, 40-third bracket and 41-third bracket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, the utility model discloses a stably-installed micro switch, which consists of a driving rod 1, a shell 2, a button 3, a public terminal 4, a normally-closed terminal 5 and a normally-open terminal 6, wherein the normally-open terminal 6 and the normally-closed terminal 5 are both positioned on the right side of the shell 2, the driving rod 1 is rotatably installed on the upper side of the shell 2, the button 3 is positioned on a rotating track of the driving rod 1, the normally-closed terminal 5 and the normally-open terminal 6 are correspondingly distributed up and down, the micro switch further comprises a first fixed contact 7 positioned on the normally-closed terminal 5 and a second fixed contact 8 positioned on the normally-open terminal 6, a bracket 40 is arranged in the shell 2, a first slot 10 for the normally-closed terminal 5 to penetrate through and a second slot 11 for the normally-open terminal 6 to penetrate through are respectively arranged on the bracket 40, the first slot 10 is in interference fit with the normally-closed terminal 5, the second slot 11 is in interference fit with the normally-open terminal 6, a moving contact 9 is arranged on the public terminal 4, the moving contact 9 is positioned between the first fixed contact 7 and the second fixed contact 8, and works on the principle that: the driving rod 1 is pressed, at the moment, the driving rod 1 downwards applies force to press the button 3, and the button 3 downwards presses to drive the moving contact 9 to downwards move, so that the moving contact is separated from the first fixed contact 7 and matched with the second fixed contact 8; when the driving rod 1 is released, the pressure borne by the button 3 disappears, the button 3 moves upwards to drive the movable contact 9 to move upwards and separate from the second fixed contact 8 to be matched with the first fixed contact 7, in sum, the purpose of changing the state of the micro switch is achieved by pressing the driving rod 1 to realize the up-and-down movement of the button 3, and because the normally closed terminal 5 is in interference fit with the first slot 10 on the support 40, the normally open terminal 6 is in interference fit with the second slot 11 on the support 40, in the use process of the micro switch, when the use environment causes vibration to the micro switch or the pressure of pressing the button 3 is too large to cause the shake of the reed 27 and the movable contact 9, the normally closed terminal 5 and the normally open terminal 6 can be stably limited and fixed on the support 40 and cannot be influenced to generate vertical shake so as to influence the normal use of the micro switch.

The normally open terminal 6 sequentially comprises a first connecting section 12, a second connecting section 13 and a third connecting section 41 from left to right, the second connecting section 13 is perpendicular to the third connecting section 41, the third connecting section 41 penetrates through the second slot 11 and is in interference fit with the second slot 11, a third slot 14 communicated with the second slot 11 is arranged on the support 40, the second connecting section 13 penetrates through the third slot 14, when the normally open terminal 6 penetrates through the second slot 11, the second connecting section 13 can penetrate through the third slot 14 and the third slot 14 to be in interference fit, the position of the normally open terminal 6 on the support 40 is further limited, and when the use environment causes vibration or excessive pressure of the push button 3 to press the reed 27 and shake of the movable contact 9, the normally open terminal 6 can be stably limited on the fixed support 40.

Preferably, the common terminal 4 includes a first fixing section 15 and a second fixing section 16, the bracket 40 is located below the second slot 11 and is provided with a fourth slot 17 for the first fixing section 15 to pass through, the third connecting section 41 is provided with a first matching hole 18 for the second fixed contact 8 to pass through, the bracket 40 is provided with a second matching hole 19 corresponding to the first matching hole 18, the second fixed contact 8 is fixedly installed on the third connecting section 41, the lower end surface of the second fixed contact is abutted against the upper end surface of the first fixing section 15, 1. The fourth slot 17 limits the position of the common terminal 4 in the housing 2, so that the common terminal 4 can be stably installed in the housing 2; 2. because the lower end surface of the second fixed contact 8 abuts against the upper end surface of the first fixed section 15 after the first fixed section 15 of the common terminal 4 is penetrated through the fourth slot 17, the common terminal 4 can support the second fixed contact 8, and further, the second fixed contact 8 tends to shake downwards when the reed 27 and the movable contact 9 shake due to vibration of the micro switch or excessive pressure of the push button 3 caused by external use environment; 3. because the second fixed contact 8 sequentially penetrates through the first matching hole 18 and the second matching hole 19, the lower end face of the second fixed contact 8 abuts against the upper end face of the first fixed section 15, and therefore the second fixed contact 8 limits the third connecting section 41 and the first fixed section 15, and the third connecting section 41 and the first fixed section 15 cannot shake vertically.

Preferably, the dustproof potting device further comprises a first wire 20, a second wire 21 and a third wire 22, wherein a first perforation 23, a second perforation 24 and a third perforation 25 are respectively arranged on the left side of the shell 2 from top to bottom, a glue pouring groove 26 is arranged on the right side of the first perforation 23, the glue pouring groove 26 is communicated with the first perforation 23, the second perforation 24 and the third perforation 25, the first wire 20 penetrates through the first perforation 23 and is fixedly connected with the normally closed terminal 5, the second wire 21 penetrates through the second perforation 24 and is fixedly connected with the first connecting section 12, the third wire 22 penetrates through the third perforation 25 and is fixedly connected with the first fixing section 15, (the wire and the terminal are fixedly connected in a mode of removing an insulating layer on the wire by 6-8 mm, then inserting the exposed wire into a terminal, screwing a screw driver is used for screwing the tail end), after the first wire 20 penetrates through the first perforation 23 and is fixedly connected with the normally closed terminal 5, the second wire 21 penetrates through the second perforation 24 and is fixedly connected with the first perforation 12 and is fixedly connected with the third perforation 25, the first wire 22 penetrates through the glue pouring groove 25 and is fixedly connected with the first perforation 25, the dustproof potting device is fixedly connected with the first perforation 15; 2. pouring the pouring sealant into the sealant pouring groove 26 can further prevent the normally closed terminal 5, the first connecting section 12 and the first fixing section 15 which are positioned on the bracket 40 from shaking along with the vibration of the micro switch from the outside.

The second fixing section 16 is provided with a second through groove 32, one end of the copper rod 28 penetrates through the second through groove 32, the pressing section 31 is integrally formed on the movable sheet 29, the glue filling groove 26 is filled with pouring glue to complete connection of the first lead 20 and the normally closed terminal 5, the second lead 21 and the first connecting section 12, and the third lead 22 and the first fixing section 15, at this time, the common terminal 4 is micro-movably mounted in the housing 2 and does not shake along with vibration of the micro-switch caused by the outside, so that after the button 3 is pressed downwards, the button 3 generates downward pressure on the pressing section 31, at this time, since the pressing section 31 is fixedly mounted on the movable plate 29 (as the pressing section 31 is moved downwards, the other end of the copper 28 moves in the second through groove 32), the pressing section 31 moves downwards, and further drives the reed 27 fixedly mounted in the movable plate 29 to move downwards (at this time, the reed 27 passes through the first through groove 30 and moves in the first through groove 30 along with the up-down movement of the button 3), so that the movable contact 9 moves downwards to be separated from the first fixed contact 7, and cooperates with the second fixed contact 8, the reed 27, the copper member 28 and the movable piece 29 can be stably mounted in the housing 2 and move in response to the up-and-down movement of the push button 3, thereby switching the state of the micro switch.

The push button comprises a shell 2, and is characterized by further comprising a sealing ring 33 and a positioning ring 34, wherein a movable groove 35 for vertically moving the push button 3 is formed in the shell 2, a positioning section 36 is formed in the bottom of the push button 3, the radius of the positioning section 36 is larger than that of the movable groove 35, the positioning ring 34 is positioned above the positioning section 36, the sealing ring 33 comprises a first penetrating section 37 and a second penetrating section 38, the push button 3 is provided with an inwards concave connecting groove 39, the second penetrating section 38 is sleeved with the connecting groove 39 and is fixedly connected with the connecting groove 39 in a clamping, bonding and other modes, the first penetrating section 37 is fixedly arranged on the positioning ring 34, 1. When the pressure acting on the push button 3 disappears, the push button 3 moves upwards, the upward moving track of the push button 3 can be limited due to the fact that the radius of the positioning section 36 is larger than that of the movable groove 35, the push button 3 can move stably in the movable groove 35, and the push button 3 can be prevented from being separated from the movable groove 35; 2. the second penetrating segment 38 is sleeved with an inwards concave connecting groove 39 and fixedly connected with the connecting groove 39, so that the second penetrating segment 38 cannot move vertically relative to the button 3 and is separated from the button 3; 3. the sealing ring 33 and the positioning ring 34 are positioned on the circumference of the button 3, so that the micro switch short circuit caused by the external water vapor entering from the movable groove 35 can be effectively prevented; 4. the second penetrating segment 38 is fixed on the connecting groove 39, and the first penetrating segment 37 is fixed on the positioning ring 34, so that the sealing ring 33 can smoothly move along with the up-and-down movement of the button 3, and is always located in the circumferential direction of the button 3.

Preferably, the positioning ring 34 and the sealing ring 33 are made of silica gel, and the circumference of the positioning ring 34 is fixedly connected with the casing 2 in a bonding manner, etc., and the silica gel is made of: 1. good elasticity can be maintained in natural environment; 2. the water is not permeable, so that external water vapor is prevented from entering the shell 2 from between the button 3 and the positioning ring 34 and between the button and the sealing ring 33, and the micro switch is prevented from being short-circuited; 3. the coating property is strong.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a micro-gap switch of installation stability comprises actuating lever, casing, button, common terminal, normally closed terminal and normally open terminal, normally open terminal and normally closed terminal all are located the right side of casing, the actuating lever rotates and installs in the casing upside, the button is located the rotation orbit of actuating lever, normally closed terminal and normally open terminal are about corresponding the distribution, its characterized in that: still including being located the first stationary contact on the normally closed terminal and being located the second stationary contact on the normally open terminal, fixed mounting has the support in the casing, be provided with the first slot that supplies the normally closed terminal to wear to establish and the second slot that supplies the normally open terminal to wear to establish on the support respectively, first slot and normally closed terminal interference fit, second slot and normally open terminal interference fit, be provided with the moving contact on the common terminal, the moving contact is located between first stationary contact and the second stationary contact.

2. The installation-stable micro-switch of claim 1, wherein: the normally open terminal sequentially comprises a first connecting section, a second connecting section and a third connecting section from left to right, wherein the second connecting section is mutually perpendicular to the third connecting section, the third connecting section penetrates through the second slot and is in interference fit with the second slot, a third slot communicated with the second slot is arranged on the support, and the second connecting section penetrates through the third slot.

3. The installation-stable micro-switch of claim 2, wherein: the public terminal comprises a first fixed section and a second fixed section, a fourth slot for the first fixed section to penetrate is arranged below the second slot, a first matching hole for the second fixed contact to penetrate is arranged on the third connecting section, a second matching hole is arranged on the support corresponding to the first matching hole, and the second fixed contact is fixedly arranged on the third connecting section and the lower end face of the second fixed contact abuts against the upper end face of the fixed section.

4. A mounting-stable micro-switch as claimed in claim 3, wherein: still include first wire, second wire and third wire, the casing left side from the top down is provided with first perforation, second perforation and third perforation respectively, the casing is located first fenestrate right side and is provided with the encapsulating groove, encapsulating groove and first perforation, second perforation and third perforation intercommunication each other, first wire wears to establish first perforation and with normally closed terminal fixed connection, second wire wears to establish second perforation and with first linkage segment fixed connection, third wire wears to establish third perforation and with first fixed segment fixed connection.

5. The installation-stable micro-switch of claim 4, wherein: still include reed, copper son and movable piece, the reed is located between movable contact and the common terminal, be provided with first through groove on the second fixed section, the one end and the movable contact fixed connection of reed, other end fixed mounting just wears to establish first through groove in the movable piece, copper son is including the section of pressing that is located the button below, the up end of pressing the section offsets with the lower terminal surface of button, be provided with the second through groove on the second fixed section, the second through groove is worn to establish to copper son's one end, presses section fixed mounting in the movable piece.

6. The installation-stable micro-switch of claim 1, wherein: still include sealing washer and retainer plate, be provided with the movable groove that supplies the vertical activity of button on the casing, the button bottom is provided with the location section, the radius of location section is greater than the radius of movable groove, the retainer plate is located the location section top, the sealing washer includes that first section of wearing to establish and second wear to establish the section, be provided with the spread groove of inwards facing on the button, the second wears to establish the section cover and establishes the spread groove and with spread groove fixed connection, first section fixed mounting wears to establish on the retainer plate.

7. The installation-stable micro-switch of claim 6, wherein: the positioning ring and the sealing ring are made of silica gel, and the circumference of the positioning ring is fixedly connected with the shell.

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