CN212434495U

CN212434495U - Manual reset fixed point switch

Info

Publication number: CN212434495U
Application number: CN202021380282.XU
Authority: CN
Inventors: 肖春林
Original assignee: Changzhou Turin Controller Co ltd
Current assignee: Changzhou Turin Controller Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-01-29
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to a manual reset fixed point switch, which comprises a terminal shell, two terminals respectively fixedly provided with a movable contact and a fixed contact, a disconnecting device for disconnecting the movable contact and the fixed contact, and a manual reset device for restoring the movable contact and the fixed contact to be closed, wherein the two terminals are arranged on the terminal shell in parallel, the fixed contact is fixedly arranged on one of the terminals, and the movable contact is arranged on the other terminal through a non-resettable reed; the disconnecting device comprises a film cover fixedly arranged below the binding post shell, an elastic diaphragm clamped in the film cover and a push rod arranged above the elastic diaphragm, and the push rod is abutted to the lower part of the push rod part; the manual reset device comprises a reset rod arranged above the push rod part, and the reset rod extends out of the binding post shell. The utility model discloses a but not recoverable reed and manual resetting means's cooperation action makes the manual start fixed point switch again after the pressure system troubleshooting, improves the security, easy operation, convenience moreover.

Description

Manual reset fixed point switch

Technical Field

The utility model relates to a manual reset fixed point switch.

Background

The fixed point switch adopts a preset node, when the node is triggered, the normally closed or normally open switch is opened or closed, the node can adopt time limitation or pressure limitation and the like, can be applied to a circuit to realize the open circuit of the circuit, the interruption of current or make the circuit flow to other circuits, and can also be used for measuring the gauge pressure and the absolute pressure of various gases and liquids in the fields of petroleum, chemical industry, metallurgy, electric power, water supply and the like to realize the monitoring, the display, the alarm and the like of medium pressure.

The utility model provides a current fixed point switch connects pressure system, when pressure system breaks down, internal pressure can increase, at this moment, make the diaphragm take place to warp, order to drive the push rod up motion, the connection of disconnection movable contact and stationary contact, current movable contact is connected through deformable reed, when internal pressure diminishes, the diaphragm replies, the push rod falls back, and the movable contact replies under the reset action of reed, resume with the stationary contact be connected, but when pressure system's trouble has not yet been restoreed this moment, the fixed point switch can break off again, so relapse, make fixed point switch damage easily, and service life is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides an improve the security, and convenient operation's manual fixed point switch that resets.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the manual reset fixed point switch comprises a binding post shell, two binding posts which are respectively and fixedly provided with a movable contact and a fixed contact, a disconnecting device for disconnecting the movable contact and the fixed contact, and a manual reset device for restoring the movable contact and the fixed contact to be closed, wherein the two binding posts are arranged on the binding post shell in parallel, the fixed contact is fixedly arranged on one binding post, and the movable contact is arranged on the other binding post through a non-resettable reed;

the reed comprises a fixed part fixedly mounted on the wiring terminal and a contact part fixedly mounted with a movable contact, two arc-shaped sheets and a push rod part, wherein the two arc-shaped sheets are connected with the fixed part and the contact part, the push rod part extends outwards from the contact part;

the disconnecting device comprises a film cover fixedly arranged below the binding post shell, an elastic diaphragm clamped in the film cover and a push rod arranged above the elastic diaphragm, and the push rod is abutted to the lower part of the push rod part;

the manual reset device comprises a reset rod arranged above the push rod part, and the reset rod extends out of the binding post shell.

Wherein, the manual reset device also comprises a reset spring which resets the reset rod.

Wherein, the release link is coaxial to be set up in the terminal shell, and reset spring suit is on the release link, and reset spring's one end supports and leans on in the release link, and the other end supports and leans on in the terminal shell.

Wherein, the upper surface undercut of terminal shell has heavy groove, and reset spring installs in heavy inslot, and the lower extreme supports and leans on in heavy groove tank bottom, and integrated into one piece has the location step on the release link, and reset spring's upper end supports and leans on in the location step.

Wherein, the notch department fixed mounting in heavy groove has fixed cover, and the upper end of location step supports and leans on in fixed cover.

Wherein, outside the terminal shell was all transversely worn out at the both ends of release link, the middle part set up in the push rod portion top of reed, and reset spring's one end is supported and is leaned on in the release link, and the other end supports and leans on in the membrane lid.

The membrane cover comprises an upper membrane cover fixedly installed at the lower end of the binding post shell and a lower membrane cover installed below the upper membrane cover, and the edge of the elastic membrane is clamped between the upper membrane cover and the lower membrane cover.

Wherein, the upper membrane cover extends inwards to form a positioning ring.

Wherein, the top of membrane lid is provided with the direction lid that is used for the direction push rod through the retainer plate is coaxial, and the push rod suit is in the direction lid.

Wherein, the outer cover of the binding post shell is provided with a protective outer cover.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up not recoverable reed and manual resetting means's cooperation action, make restart fixed point switch after the pressure system troubleshooting, improve the security, manual resetting means easy operation, convenience moreover.

Drawings

Fig. 1 is a schematic diagram of a transverse cross-sectional structure of a first embodiment of the manual reset fixed-point switch of the present invention.

Fig. 2 is a schematic view of the three-dimensional structure of the reed connecting terminal of the manual reset fixed-point switch of the present invention.

Fig. 3 is a schematic diagram of a transverse cross-sectional structure of a second embodiment of the manual reset fixed point switch of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments. In the following description, any concept relating to the directionality or orientation of up, down, left, right, front and rear is given with respect to the position shown in the figures being described, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Example one

As shown in figure 1, the manual reset fixed point switch of the utility model comprises a terminal shell 1, two disconnecting devices which are respectively fixedly provided with a movable contact 21 and a fixed contact 22 and disconnect the movable contact 21 and the fixed contact 22, and a manual reset device which enables the movable contact 21 and the fixed contact 22 to be restored to be closed, two parallel devices are arranged on the terminal shell 1, the fixed contact 22 is fixedly arranged on one of the two devices, the movable contact 21 is arranged on the other device through a non-resettable reed 4, the movable contact 21 is arranged right above the fixed contact 22, during normal use, the movable contact 21 is abutted against the fixed contact, the circuit is closed and in a normally open state, when a pressure system breaks down, when the pressure rises, a diaphragm is forced to move, a push rod is pushed upwards, so that the movable contact and the fixed contact are separated, after the fault is eliminated, only the manual reset reed is needed, the movable, the loop is closed.

The outer cover of the terminal shell 1 is provided with a protective outer cover 3, and a space is reserved between the inner wall of the protective outer cover and the outer wall of the terminal shell 1, so that a power line at a terminal position can be conveniently connected.

As shown in fig. 2, the spring plate 4 includes a fixing portion 41 riveted to the terminal 2 and a contact portion 42 fixedly mounted with the movable contact 21, two arc-shaped pieces 43 each connecting the fixing portion 41 and the contact portion 42, and a push rod portion 44 extending outward from the contact portion 42, the two arc-shaped pieces 43 are respectively disposed at both ends of the spring plate 4, one of the arc-shaped pieces 43 is bent upward, the other arc-shaped piece is bent downward, and the push rod portion 44 is disposed in a gap between the two arc-shaped pieces 43. Because the reed is not recoverable, the reed can not automatically recover when the push rod falls back, and can not recover by manual reset.

The disconnecting device comprises a film cover 51 fixedly installed below the terminal housing 1, an elastic diaphragm 52 clamped in the film cover 51, a push rod 53 installed above the elastic diaphragm 52 and a joint 56 fixedly installed below the film cover 51, wherein the joint 56 is connected with a pressure system, the push rod 53 is abutted to the lower part of the push rod part 44, and during operation, the diaphragm is upwards deformed under the action of pressure to push the push rod to move upwards, so that a reed is driven to move upwards, and a movable contact is forced to be separated from a static contact.

The membrane cover 51 includes an upper membrane cover 511 fixedly mounted on the lower end of the terminal housing 1, and a lower membrane cover 512 mounted under the upper membrane cover 511, and the edge of the elastic membrane 52 is sandwiched between the upper membrane cover 511 and the lower membrane cover 512 to realize the fixed mounting of the membrane.

The upper membrane cover 511 is extended inward with a positioning ring 513 to limit the deformation degree of the membrane, and avoid the membrane from being deformed excessively to protect the membrane.

A guide cover 55 for guiding the push rod 53 is coaxially arranged above the membrane cover 51 through a fixing ring 54, and the push rod 53 is sleeved in the guide cover 55 to play a role in positioning the push rod and avoid the push rod from deviating.

Above-mentioned manual resetting means includes that the coaxial reset rod 61 that sets up in terminal shell 1 and the reset spring 62 that makes reset rod 61 reset, and this reset rod 61 sets up in push-rod portion 44 top, sets up between two terminals to outside stretching out terminal shell 1, reset spring 62 suit is on reset rod 61, and reset spring 62's one end is supported and is leaned on in reset rod 61, and the other end supports and leans on in terminal shell 1. When resetting, only need down press the release link, order about the reed and move down, make movable contact and stationary contact, let go up the release link after, the release link is replied under reset spring's effect.

The upper surface undercut of terminal shell 1 has heavy groove 11, and reset spring 62 installs in heavy groove 11, and the lower extreme supports and leans on in heavy groove 11 tank bottom, is provided with location step 611 on the release link 61, and reset spring 62's upper end supports and leans on in location step 611, realizes reset spring's fixed mounting to utilize threaded connection can realize the adjustment of reset spring's restoring force.

The notch of this heavy groove 11 department fixed mounting has fixed cover 63, and the upper end of location step 611 supports and leans on in fixed cover 63 for inject the release link, avoid the gag lever post roll-off heavy groove.

Example two

As shown in fig. 3, the second embodiment is different from the first embodiment in that the reset rod 61 is disposed along the radial direction of the terminal housing 1, two ends of the reset rod extend out of the terminal housing 1, the middle of the reset rod is disposed above the push rod portion 44 of the spring plate 4, two reset springs 62 are disposed, one of the two sides of the reset rod is disposed, one end of the reset rod abuts against the reset rod 61, and the other end of the reset rod abuts against the guide cover 55; when the device works, the reset rods at the two ends are pressed to reset the pressing reeds, so that the movable contact and the fixed contact are closed. Because the release link sets up in the side, need not extract the switch and can operate, the operation of being more convenient for.

A channel 7 is arranged in the space between the wiring terminal shell 1 and the protective outer cover 3, a reset rod passes through the channel 7 to play a positioning role, and the channel wall 71 can be integrally formed on the inner wall of the protective outer cover 3; all seted up guide way 72 on the passageway wall 71 of both sides, reset lever 61 outwards extends has the guide block, and the guide block is installed in the guide way, plays the limited guide effect to the reset lever.

Finally, it should be noted that: the above embodiments are merely illustrative of the technical solutions of the present invention, and not limitative thereof; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A manual reset fixed point switch is characterized in that: the fixed point switch comprises a terminal shell (1), two terminals (2) which are fixedly provided with a movable contact (21) and a fixed contact (22) respectively, a disconnecting device which enables the movable contact (21) and the fixed contact (22) to be disconnected, and a manual reset device which enables the movable contact (21) and the fixed contact (22) to be restored to be closed, wherein the two terminals (2) are arranged on the terminal shell (1) in parallel, the fixed contact (22) is fixedly arranged on one of the terminals (2), and the movable contact (21) is arranged on the other terminal (2) through a non-resettable reed (4);

the reed (4) comprises a fixing part (41) fixedly mounted on the binding post (2) and a contact part (42) fixedly mounted with the movable contact (21), two arc-shaped pieces (43) which are connected with the fixing part (41) and the contact part (42) respectively, and a push rod part (44) extending outwards from the contact part (42), wherein the two arc-shaped pieces (43) are arranged at two ends of the reed (4) respectively, one arc-shaped piece (43) is bent upwards, the other arc-shaped piece is bent downwards, and the push rod part (44) is arranged in a gap between the two arc-shaped pieces (43);

the disconnecting device comprises a film cover (51) fixedly installed below the terminal housing (1), an elastic diaphragm (52) clamped in the film cover (51), and a push rod (53) installed above the elastic diaphragm (52), wherein the push rod (53) abuts against the lower part of the push rod part (44);

the manual reset device comprises a reset rod (61) arranged above the push rod part (44), and the reset rod (61) extends out of the binding post shell (1).

2. The manual reset fixed point switch of claim 1 wherein the manual reset means further comprises a reset spring (62) that resets the reset lever (61).

3. The manual reset fixed point switch according to claim 2, wherein the reset rod (61) is coaxially arranged in the terminal housing (1), the reset spring (62) is sleeved on the reset rod (61), one end of the reset spring (62) abuts against the reset rod (61), and the other end of the reset spring abuts against the terminal housing (1).

4. The manual reset fixed point switch according to claim 3, wherein the upper surface of the terminal housing (1) is recessed downward to form a sunken groove (11), the reset spring (62) is installed in the sunken groove (11), the lower end of the reset spring abuts against the bottom of the sunken groove (11), the reset rod (61) is integrally formed with a positioning step (611), and the upper end of the reset spring (62) abuts against the positioning step (611).

5. The manual reset fixed point switch according to claim 4, wherein a fixed sleeve (63) is fixedly installed at the notch of the sinking groove (11), and the upper end of the positioning step (611) abuts against the fixed sleeve (63).

6. The manual reset fixed point switch according to claim 2, wherein both ends of the reset rod (61) transversely penetrate out of the terminal housing (1), the middle part of the reset rod is arranged above the push rod part (44) of the reed (4), one end of the reset spring (62) abuts against the reset rod (61), and the other end abuts against the membrane cover (51).

7. The manual reset fixed point switch according to claim 1, wherein the membrane cover (51) comprises an upper membrane cover (511) fixedly mounted on the lower end of the terminal housing (1) and a lower membrane cover (512) mounted below the upper membrane cover (511), and the edge of the elastic membrane (52) is clamped between the upper membrane cover (511) and the lower membrane cover (512).

8. The manual reset fixed point switch of claim 7, wherein the upper membrane cover (511) is extended inward with a positioning ring (513).

9. The manual reset fixed point switch according to claim 1, wherein a guide cover (55) for guiding the push rod (53) is coaxially arranged above the membrane cover (51) through a fixing ring (54), and the push rod (53) is sleeved in the guide cover (55).

10. The manual reset fixed point switch according to claim 1, characterized in that a protective cover (3) is arranged outside the binding post shell (1).