CN117894618A - Micro-switch and assembling method thereof - Google Patents
Micro-switch and assembling method thereof Download PDFInfo
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- CN117894618A CN117894618A CN202410306451.1A CN202410306451A CN117894618A CN 117894618 A CN117894618 A CN 117894618A CN 202410306451 A CN202410306451 A CN 202410306451A CN 117894618 A CN117894618 A CN 117894618A
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- terminal
- sealing cap
- key
- reed
- elastic sealing
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 76
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 64
- 238000005452 bending Methods 0.000 claims abstract description 56
- 238000003825 pressing Methods 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 16
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000013459 approach Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/005—Apparatus or processes specially adapted for the manufacture of electric switches of reed switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Push-Button Switches (AREA)
Abstract
The invention provides a micro switch and an assembling method thereof. The micro-switch includes: base, casing, terminal subassembly, button and reed. The terminal assembly comprises a supporting terminal and a triggering terminal, wherein the supporting terminal and the triggering terminal are both inserted on the base, and the reed spans the supporting terminal and the triggering terminal. The support terminal is provided with a support bending end and a pressing bending end, the fixed end of the reed is clamped between the support bending end and the pressing bending end, the support bending end is welded with the fixed end, and the pressing bending end is propped against the upper side of the fixed end. A reset elastic piece is arranged between the key and the base, and the tail end of the reed extends and is erected on the key; the shell is provided with an elastic sealing cap which is sleeved on the key. The micro switch can ensure the stability of the reed connecting position, improve the stability and prolong the service life; the elastic sealing cap is conveniently sleeved on the key, the difficulty of traditional manual operation is reduced, meanwhile, the bonding stability is ensured, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of micro-switches, in particular to a micro-switch and an assembly method thereof.
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.
Existing microswitches generally have: the key, the terminal and the reed, the reed is used as a key part, and the connection or disconnection of the control circuit is realized by utilizing the elasticity of the reed. However, the conventional micro-switch has a relatively low service life, and the connection position of the reed is easy to break after being subjected to compression deformation for a plurality of times or for a long time, so that the micro-switch cannot be normally used.
Therefore, how to design a micro-switch and its assembling method, so that it can ensure the stability of the reed connection position, improve the stability of the micro-switch and prolong the service life, which is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a micro switch and an assembly method thereof, which can ensure the stability of the connection position of a reed, improve the stability of the micro switch and prolong the service life; meanwhile, the assembling method of the micro switch is also disclosed, the difficulty of traditional manual operation is reduced, and the working efficiency is improved.
The aim of the invention is realized by the following technical scheme:
a micro-switch, comprising: base, shell, terminal assembly, button and reed; the shell is covered on the base and forms a containing cavity, the terminal assembly is arranged on the base and partially exposed out of the containing cavity, and the key is arranged on the base and partially exposed out of the containing cavity;
the terminal assembly comprises a supporting terminal and a triggering terminal, the supporting terminal and the triggering terminal are both inserted on the base, and the reed spans the supporting terminal and the triggering terminal; the trigger terminal is provided with a trigger bending end which is positioned below the reed;
the support terminal is provided with a support bending end and a pressing bending end, the fixed end of the reed is clamped between the support bending end and the pressing bending end, the support bending end is welded with the fixed end, and the pressing bending end is propped against the upper part of the fixed end;
a reset elastic piece is arranged between the key and the base, and the tail end of the reed extends and is erected on the key; the shell is provided with an elastic sealing cap, and the elastic sealing cap is sleeved on the key.
In one embodiment, the spring is in an integral structure, two parallel and independent elastic arms are arranged on the spring, the tail ends of the two elastic arms are erected on the key, the elastic arms have elastic tendency close to the trigger terminal, and a concave and bent arch notch is formed at the joint of the elastic arms and the fixed end.
In one embodiment, the key is provided with a pressing column and a sliding block seat, the sliding block seat is slidably arranged on the base, and the pressing column is arranged on the sliding block seat and penetrates through the shell; the elastic sealing cap is sleeved on the pressing column, and a mounting groove matched with the elastic sealing cap is formed in the corresponding position of the shell.
In one embodiment, the elastic sealing cap is of a soft rubber structure, and the elastic sealing cap and the bottom of the mounting groove are bonded through glue.
In one embodiment, the base is provided with two guide upright posts, and the slide block seat of the key is slidably arranged on the guide upright posts and limited by the guide upright posts;
the top end of the guide upright post is provided with barbs, the sliding block seat is provided with wedge blocks matched with the barbs, the number of the wedge blocks is four, and every two wedge blocks are matched with one guide upright post; the guide upright post is provided with a convex rib, and the two wedge-shaped blocks are clamped on two sides of the convex rib;
the sliding block seat is provided with a deflection limiting edge, and the inner wall of the shell is provided with a deflection limiting groove matched with the deflection limiting edge.
In one embodiment, the reset elastic piece is of a spring structure, a positioning nail is arranged on the base, the reset elastic piece is sleeved on the positioning nail, and two ends of the reset elastic piece are respectively propped against the base and the sliding block seat.
An assembling method of a micro switch, which is used for installing and obtaining the micro switch described in any one of the above, comprises the following steps:
step one, mounting a terminal assembly on a base;
step two, installing the keys on the base;
welding the fixed end of the reed to the support bending end of the support terminal;
step four, the shell cover is arranged on the base;
step five, installing an elastic sealing cap by using an installation tool assembly, so that the elastic sealing cap is sleeved on a pressing column of a key, and simultaneously, the bottom of the elastic sealing cap is bonded with an installation groove through glue; the mounting tool assembly comprises a hollow tool sleeve and a piston sliding in the tool sleeve, a piston rod penetrating through the tool sleeve is arranged on the piston, a avoidance hole matched with the key is formed in the piston, and the tool sleeve is provided with an accommodating opening.
In one embodiment, in the fifth step, the elastic sealing cap is first clamped in the accommodating opening of the jig sleeve, then glue is dipped in the bottom of the elastic sealing cap, then the installation tool assembly and the elastic sealing cap are moved above the key, then the jig sleeve is pressed down so that the bottom of the elastic sealing cap is pressed into the installation groove to achieve glue bonding, then the piston rod is pressed down so that the elastic sealing cap is sleeved on the pressing column, and finally the installation tool assembly is removed.
In conclusion, the micro switch can ensure the stability of the reed connecting position, improve the stability of the micro switch and prolong the service life. The assembling method of the micro switch can realize that the elastic sealing cap is conveniently sleeved on the key, thereby reducing the difficulty of the traditional manual operation; meanwhile, the bonding stability is ensured and the working efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a micro switch according to the present invention;
FIG. 2 is an exploded view of the microswitch shown in FIG. 1;
FIG. 3 is a partial view of the microswitch shown in FIG. 2;
FIG. 4 is an internal structural view of the micro switch shown in FIG. 1;
FIG. 5 is a schematic diagram of the microswitch shown in FIG. 1 in a powered off state;
FIG. 6 is a schematic diagram of the microswitch shown in FIG. 1 in an energized state;
FIG. 7 is a block diagram of a key of the micro switch shown in FIG. 2;
FIG. 8 is a schematic illustration of the assembly of the jog shape in conjunction with an installation tool assembly;
FIG. 9 is a block diagram of the installation tool assembly shown in FIG. 8;
FIG. 10 is a state diagram (one) of the assembly of the jog shape in cooperation with an installation tool assembly;
fig. 11 is a state diagram (two) of the assembly of the jog shape in cooperation with the installation tool assembly.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the present invention provides a micro switch 10, the micro switch 10 includes: base 100, housing 200, terminal assembly 300, key 400, and reed 500. The housing 200 is covered on the base 100 and forms a containing chamber, the terminal assembly 300 is disposed on the base 100 and partially exposed outside the containing chamber, and the key 400 is mounted on the base 100 and partially exposed outside the containing chamber.
As shown in fig. 2 and 3, the terminal assembly 300 includes a supporting terminal 310 and a triggering terminal 320, wherein the supporting terminal 310 and the triggering terminal 320 are both inserted on the base 100, and the reed 500 spans the supporting terminal 310 and the triggering terminal 320. Trigger terminal 320 is provided with trigger bending end 321, trigger bending end 321 is located below reed 500. The support terminal 310 is provided with a support bending end 311 and a press bending end 312, the fixed end 501 of the reed 500 is clamped between the support bending end 311 and the press bending end 312, the support bending end 311 is welded with the fixed end 501, and the press bending end 312 is propped against the upper part of the fixed end 501.
As shown in fig. 4, a reset elastic member 401 is provided between the key 400 and the base 100, and the tip of the reed 500 extends and is mounted on the key 400. The housing 200 is provided with an elastic sealing cap 210 (as shown in fig. 2), and the elastic sealing cap 210 is sleeved on the key 400. The elastic sealing cap 210 serves to prevent moisture, dust, etc. from entering the inside of the case 200 through a gap between the key 400 and the case 200, and the elastic sealing cap 210 can be compressively deformed, the setting of which does not affect the movement of the key 400.
In this embodiment, as shown in fig. 2, the key 400 is provided with a pressing post 410 and a sliding block seat 420, the sliding block seat 420 is slidably disposed on the base 100, and the pressing post 410 is disposed on the sliding block seat 420 and penetrates through the housing 200. The elastic sealing cap 210 is sleeved on the pressing column 410, and a mounting groove 220 matched with the elastic sealing cap 210 is formed in a corresponding position of the shell 200. Preferably, the elastic sealing cap 210 is a soft rubber structure, and the bottom of the elastic sealing cap 210 is bonded with the mounting groove 220 by glue.
The operation principle of the micro switch 10 of the present invention will be described with reference to the above configuration:
in normal operation, as shown in fig. 4 and 5, the fixed end 501 of the reed 500 is welded to the supporting bending end 311 of the supporting terminal 310, and the pressing bending end 312 cooperates with the supporting bending end 311 to clamp the fixed end 501, and the end of the reed 500 extends to the key 400. The reed 500 itself has an elastic force that causes the reed 500 to have a tendency to approach the trigger terminal 320. Since the reset elastic member 401 lifts the key 400, the reed 500 mounted on the key 400 is lifted, so that the reed 500 cannot contact with the trigger terminal 320, and at this time, a communication circuit cannot be formed between the support terminal 310 and the trigger terminal 320, i.e. the power-off state is achieved;
when the key 400 is pressed down by an external force, the end of the reed 500 is no longer subject to a lifting force, the reed 500 approaches and is pressed against the trigger bending end 321 of the trigger terminal 320 under the action of the self elastic force, and at this time, the support terminal 310 and the trigger terminal 320 are electrified (as shown in fig. 6) through the reed 500, that is, in an electrified state.
In the prior art, the fixed end 501 of the reed 500 is typically welded directly to the support terminal 310. In this way, the stress of the deformation of the reed 500 is concentrated at the welded portion, and the welded portion is easily broken after being deformed by pressure a plurality of times or for a long time. In addition, after being deformed by pressure a plurality of times or for a long time, the spring property of the reed 500 may be weakened, thereby causing the micro switch to be not stably triggered. Compared with the prior art, the microswitch 10 of the present invention has two distinct points: "the support terminal 310 is provided with the press-holding bent end 312" and "the reed 500 itself has a tendency to approach the trigger terminal 320". These two differences are specifically designed to solve the above-mentioned technical problems. The specific characteristics and beneficial effects are as follows:
first, the support terminal 310 is provided with a press bending end 312, and the press bending end 312 is matched with the support bending end 311, and the press bending end 312 and the support bending end are used for clamping the fixed end 501 of the reed 500. Thus, when the spring 500 is lifted by the key 400 to deform, the holding bending end 312 will abut against the spring 500, i.e. part of the moment of the spring 500 will be transferred to the holding bending end 312. Thus, the fixed end 501 of the reed 500 is not subjected to an excessive external force. When the key 400 is pressed down, the reed 500 is pressed against the trigger bending end 321 under the action of its own elastic force, and the reed 500 is not excessively deformed due to the support of the trigger bending end 321, so that the fixed end 501 is not subjected to excessive external force. Therefore, the pressing bending end 312 is matched with the supporting bending end 311 to clamp the fixed end 501, so that the external force applied to the welded part of the fixed end 501 in the use process can be effectively reduced, the stress concentration is reduced, and the possibility of fracture is reduced;
secondly, the reed 500 itself has a tendency to approach the trigger terminal 320, and the key 400 lifts the reed 500 so that it cannot contact the trigger terminal 320. In the prior art, the spring 500 is usually pressed and deformed before contacting the trigger terminal 320, but in the present invention, the spring 500 contacts the trigger terminal 320 without external force. Thus, even though the spring performance of the reed 500 is weakened, initially, the key 400 can still lift the reed 500 by virtue of the elastic force of the reset elastic member 401, so that the reed 500 cannot contact with the trigger terminal 320; when the trigger is triggered, the key 400 is pressed down, the reed 500 is influenced by self gravity, and the tail end of the reed is still inclined downwards and is contacted with the trigger bending end 321. That is, even if the elastic performance of the reed 500 is weakened, the micro switch 10 can be operated normally, thereby ensuring stability and extending the service life.
It is emphasized that in the present invention, the supporting terminal 310 and the triggering terminal 320 are simple in structure and are both of an integrated structure. During processing, the basic shapes of the supporting terminal 310 and the triggering terminal 320 can be manufactured by only one simple stamping; and then bending the corresponding positions of the tail ends of the supporting terminal 310 and the triggering terminal 320. The end of the supporting terminal 310 is cut and divided into a supporting bending end 311 and a pressing bending end 312, and the position of the pressing bending end 312 after molding is higher than the position of the supporting bending end 311, so that the bending equipment needs to bend the two positions respectively.
Thus, compared with the prior art, the terminal assembly 300 has the advantages of simple and reliable structure, convenient processing, low production cost and the like. Moreover, the supporting bending end 311 and the pressing bending end 312 are directly formed at the tail end of the bent supporting terminal 310, and a height difference exists between the supporting bending end 311 and the pressing bending end, so that the reed 500 can be clamped and fixed during preliminary assembly, and the subsequent welding of the fixed end 501 is facilitated.
In this embodiment, as shown in fig. 3, the reed 500 is also in an integral structure, the reed 500 is provided with two parallel and independent elastic arms 502, the ends of the two elastic arms 502 are arranged on the key 400, the elastic arms 502 have an elastic tendency to approach the trigger terminal 320, and a concave and curved arch notch 503 is formed at the connection part of the elastic arms 502 and the fixed end 501. The design of the arched notch 503 can better maintain the elastic performance of the elastic arm 502. The independent design of the two elastic arms 502 is to improve the reliability of the reed 500, when the key 400 is pressed down, if one of the elastic arms 502 is blocked or loses elasticity and cannot work normally, the other elastic arm 502 can still contact the trigger terminal 320 normally, so as to realize circuit conduction. In addition, the structure of the reed 500 can be directly machined by a stamping mode, and the advantage of low machining cost is achieved.
In one embodiment, as shown in fig. 3, two guide posts 110 are disposed on the base 100, and the slider seat 420 of the key 400 is slidably disposed on the guide posts 110 and is limited by the guide posts 110. The top end of the guide upright post 110 is provided with a barb 111, the slide block seat 420 is provided with wedge blocks 421 matched with the barb 111 (as shown in fig. 7), and the number of the wedge blocks 421 is four, and every two wedge blocks 421 are matched with one guide upright post 110. The guide post 110 is provided with a rib 112, and two wedge blocks 421 are clamped on two sides of the rib 112.
During assembly, a worker presses the key 400 downwards from the top end of the guide upright posts 110, and the barbs 111 are in extrusion fit with the inclined surfaces of the wedge-shaped blocks 421, so that the slide block seat 420 is sunk between the two guide upright posts 110; after the slider seat 420 is sunk, the inclined surface of the wedge 421 can no longer be in press fit with the barb 111, so that the slider seat 420 is difficult to pass over the barb 111, i.e. the barb 111 limits the upper height limit of the slider seat 420. Meanwhile, two adjacent wedge blocks 421 can clamp the convex edges 112, so that the sliding block seat 420 is limited by the guide upright post 110, and the sliding block seat 420 can only slide and cannot rotate in the height range of the guide upright post 110, thereby ensuring the stability of the lifting and sliding of the key 400 on the base 100.
Preferably, the sliding block seat 420 is provided with a deflection limiting rib 422 (as shown in fig. 7), and the inner wall of the housing 200 is provided with a deflection limiting groove (not shown) matched with the deflection limiting rib 422. The cooperation of the deflection limiting ribs 422 and the deflection limiting grooves can effectively prevent the occurrence of deflection jamming of the sliding block seat 420 in the lifting sliding process, so that smooth movement of the key 400 is ensured.
Preferably, as shown in fig. 3 and 7, the reset elastic member 401 has a spring structure, the base 100 is provided with a positioning pin 120, the reset elastic member 401 is sleeved on the positioning pin 120, and two ends of the reset elastic member 401 respectively support against the base 100 and the slide block seat 420. The function of the positioning pin 120 is to prevent the reset spring 401 from tilting, dislocating, etc. during operation.
On the premise of the microswitch 10 based on the above structure, the designer finds that the installation process of the elastic sealing cap 210 is complicated and difficult, mainly because of the following:
on the one hand, since the key 400 is a movable part and cannot be effectively fixed, when the elastic sealing cap 210 is sleeved on the pressing post 410 of the key 400, the key 400 is subject to external pressure to float up and down, which makes the installation of the elastic sealing cap 210 difficult;
on the other hand, when the elastic sealing cap 210 is sleeved on the pressing post 410 of the key 400, the bottom of the elastic sealing cap 210 and the mounting groove 220 are bonded by glue, and the sleeving step and the bonding step are required to be completed rapidly within the same time period according to the requirement of the operation instruction, so as to ensure the stability of glue bonding; if the elastic sealing cap 210 is first sleeved on the pressing post 410 of the key 400, it becomes extremely difficult to adhere glue between the bottom of the elastic sealing cap 210 and the mounting groove 220; if glue is adhered between the bottom of the elastic sealing cap 210 and the mounting groove 220, and then the elastic sealing cap 210 is sleeved on the pressing post 410 of the key 400, the glue is easily adhered to other irrelevant components.
To this end, the present invention also provides an assembling method of the micro switch 10 to solve the above-mentioned technical problems. To accommodate the installation of the elastomeric seal cap 210, the present invention also provides an installation tool assembly 20 for use with the assembly method.
Specifically, as shown in fig. 8 and 9, the mounting tool assembly 20 includes a hollow jig sleeve 600 and a piston 700 sliding in the jig sleeve 600, a piston rod 710 passing through the jig sleeve 600 is disposed on the piston 700, and a avoiding hole 701 matching with the key 400 is formed on the piston 700, and the jig sleeve 600 has an accommodating opening 601. In operation, the operator can use the jig sleeve 600 to clamp the elastic sealing cap 210 and sleeve the elastic sealing cap 210 on the key 400, and the specific operation flow is as follows (please refer to fig. 9, 10 and 11 together):
firstly, the elastic sealing cap 210 is clamped in the accommodating opening 601 of the jig sleeve 600, and the clamped elastic sealing cap 210 is not easy to fall from the accommodating opening 601 because the elastic sealing cap 210 has elasticity;
next, the operator holds the tool sleeve 600 in his palm, touches the piston rod 710 with his thumb (temporarily does not press), dips the bottom of the elastic sealing cap 210 with glue, and then moves the installation tool assembly 20 and the elastic sealing cap 210 over the key 400 (specifically over the press stud 410). The jig sleeve 600 (shown in fig. 10) is preferably pressed down, the bottom of the elastic sealing cap 210 is pressed into the mounting groove 220, and the elastic sealing cap 210 contacts the housing 200 to achieve glue bonding. It should be noted that, during the pressing of the jig sleeve 600, since the pressing post 410 cannot break through the socket at the top of the elastic sealing cap 210, the elastic sealing cap 210 presses the pressing post 410, so that the key 400 moves downward along with the elastic sealing cap 210;
after the jig sleeve 600 is pressed to the bottom, the thumb of the worker presses the piston rod 710 again (as shown in fig. 11), so that the piston 700 compresses the elastic sealing cap 210. At this time, the elastic sealing cap 210 will be deformed initially, the position of the sleeve opening at the top of the elastic sealing cap 210 will be lowered, and the key 400 will be driven to move down until the bottom (the key 400 cannot move any more), at this time, the pressing column 410 will not break through the sleeve opening at the top of the elastic sealing cap 210; as the piston 700 further descends, the deformation of the elastic sealing cap 210 is intensified, and the compression column 410 eventually breaks through the socket at the top of the elastic sealing cap 210 to complete the sleeving, i.e. the top of the compression column 410 enters the avoiding hole 701. It is noted that as the plunger 700 descends, the plunger 700 has a tendency to push the elastomeric seal cap 210 out of the receiving opening 601, and the elastomeric seal cap 210 will remain stable on the key 400 when the operator removes the installation tool assembly 20.
Further, in order to further improve the tightness between the elastic sealing cap 210 and the housing 200, after the glue bonding is completed, a hot riveting process may be further used to perform hot riveting flanging on the elastic sealing cap 210.
By the above assembly method, on one hand, the elastic sealing cap 210 can be conveniently sleeved on the key 400, so that the difficulty of traditional manual operation is reduced; on the other hand, while the elastic sealing cap 210 is sleeved on the pressing post 410 of the key 400, the bottom of the elastic sealing cap 210 is adhered to the mounting groove 220 by glue. The sleeving step and the bonding step are completed rapidly within the same time period, so that the bonding stability of the glue is ensured, and the working efficiency is improved.
Preferably, the piston 700 is provided with a limiting piece 720 (as shown in fig. 9), the limiting piece 720 abuts against the inner wall of the jig sleeve 600, and the limiting piece 720 is used for preventing the piston 700 from being laterally deviated in the sliding process, so as to cause a clamping stagnation phenomenon during pressing.
Next, an assembly method of the entire micro switch 10 is described, including the steps of:
1. mounting the terminal assembly 300 on the base 100;
2. mounting the key 400 on the base 100;
3. welding the fixed end 501 of the reed 500 to the support bent end 311 of the support terminal 310;
4. cover the case 200 to the base 100;
5. the elastic sealing cap 210 is mounted by using the mounting tool assembly 20 such that the elastic sealing cap 210 is sleeved on the pressing post 410 of the key 400, and simultaneously, the bottom of the elastic sealing cap 210 is bonded with the mounting groove 220 by glue.
In summary, the micro switch 10 of the present invention can ensure the stability of the connection position of the reed 500, cope with the elastic degradation of the reed 500, improve the stability of the micro switch 10 and prolong the service life. According to the micro-switch assembly method, on one hand, the elastic sealing cap 210 can be conveniently sleeved on the key 400, so that the difficulty of traditional manual operation is reduced; on the other hand, while the elastic sealing cap 210 is sleeved on the pressing post 410 of the key 400, the bottom of the elastic sealing cap 210 is adhered to the mounting groove 220 by glue. The sleeving step and the bonding step are completed rapidly within the same time period, so that the bonding stability of the glue is ensured and the working efficiency is improved.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A microswitch, comprising: base, shell, terminal assembly, button and reed; the shell is covered on the base and forms a containing cavity, the terminal assembly is arranged on the base and partially exposed out of the containing cavity, and the key is arranged on the base and partially exposed out of the containing cavity;
the terminal assembly comprises a supporting terminal and a triggering terminal, the supporting terminal and the triggering terminal are both inserted on the base, and the reed spans the supporting terminal and the triggering terminal; the trigger terminal is provided with a trigger bending end which is positioned below the reed;
the support terminal is provided with a support bending end and a pressing bending end, the fixed end of the reed is clamped between the support bending end and the pressing bending end, the support bending end is welded with the fixed end, and the pressing bending end is propped against the upper part of the fixed end;
a reset elastic piece is arranged between the key and the base, and the tail end of the reed extends and is erected on the key; the shell is provided with an elastic sealing cap, and the elastic sealing cap is sleeved on the key.
2. The micro-switch according to claim 1, wherein the reed is of an integrated structure, the reed is provided with two side-by-side independent elastic arms, the tail ends of the two elastic arms are arranged on the key, the elastic arms have an elastic trend close to the trigger terminal, and a concave and curved arch notch is formed at the joint of the elastic arms and the fixed end.
3. The micro-switch according to claim 1, wherein the key is provided with a pressing post and a sliding block seat, the sliding block seat is slidably arranged on the base, and the pressing post is arranged on the sliding block seat and penetrates through the shell; the elastic sealing cap is sleeved on the pressing column, and a mounting groove matched with the elastic sealing cap is formed in the corresponding position of the shell.
4. A microswitch according to claim 3 wherein the resilient sealing cap is of flexible rubber construction and is glued to the bottom of the mounting groove.
5. The micro-switch according to claim 3, wherein the base is provided with two guide posts, and the slide block seat of the key is slidably arranged on the guide posts and limited by the guide posts;
the top end of the guide upright post is provided with barbs, the sliding block seat is provided with wedge blocks matched with the barbs, the number of the wedge blocks is four, and every two wedge blocks are matched with one guide upright post; the guide upright post is provided with a convex rib, and the two wedge-shaped blocks are clamped on two sides of the convex rib;
the sliding block seat is provided with a deflection limiting edge, and the inner wall of the shell is provided with a deflection limiting groove matched with the deflection limiting edge.
6. The micro-switch according to claim 3, wherein the reset elastic member has a spring structure, the base is provided with a positioning pin, the reset elastic member is sleeved on the positioning pin, and two ends of the reset elastic member are respectively abutted against the base and the sliding block seat.
7. A method for assembling a micro-switch is characterized in that,
a microswitch for installation according to any one of claims 3 to 6, comprising the steps of:
step one, mounting a terminal assembly on a base;
step two, installing the keys on the base;
welding the fixed end of the reed to the support bending end of the support terminal;
step four, the shell cover is arranged on the base;
step five, installing an elastic sealing cap by using an installation tool assembly, so that the elastic sealing cap is sleeved on a pressing column of a key, and simultaneously, the bottom of the elastic sealing cap is bonded with an installation groove through glue; the mounting tool assembly comprises a hollow tool sleeve and a piston sliding in the tool sleeve, a piston rod penetrating through the tool sleeve is arranged on the piston, a avoidance hole matched with the key is formed in the piston, and the tool sleeve is provided with an accommodating opening.
8. The method of assembling a microswitch as in claim 7 wherein,
in the fifth step, the elastic sealing cap is clamped in the accommodating opening of the jig sleeve, glue is dipped in the bottom of the elastic sealing cap, then the installation tool component and the elastic sealing cap are moved to the position above the key, the jig sleeve is pressed down so that the bottom of the elastic sealing cap is pressed into the installation groove to achieve glue bonding, the piston rod is pressed down so that the elastic sealing cap is sleeved on the pressing column, and finally the installation tool component is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410306451.1A CN117894618B (en) | 2024-03-18 | 2024-03-18 | Micro-switch and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410306451.1A CN117894618B (en) | 2024-03-18 | 2024-03-18 | Micro-switch and assembling method thereof |
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| CN117894618A true CN117894618A (en) | 2024-04-16 |
| CN117894618B CN117894618B (en) | 2024-05-24 |
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|---|---|---|---|---|
| JPH05225855A (en) * | 1992-02-15 | 1993-09-03 | Matsushita Electric Works Ltd | Small switch |
| JP2003068164A (en) * | 2001-08-28 | 2003-03-07 | Matsushita Electric Works Ltd | Switch |
| KR101255681B1 (en) * | 2012-02-09 | 2013-04-17 | 주식회사 에이 씨 에스 | Lock switch |
| CN106128828A (en) * | 2016-08-29 | 2016-11-16 | 仝达机电工业（惠州）有限公司 | A kind of novel switched |
| US20180025855A1 (en) * | 2016-07-22 | 2018-01-25 | Alps Electric Co., Ltd. | Switch device and method for manufacturing switch device |
| CN213212003U (en) * | 2020-08-18 | 2021-05-14 | 珠海市惟达电子有限公司 | Push switch |
| CN218004680U (en) * | 2022-06-08 | 2022-12-09 | 珠海市惟达电子有限公司 | Push switch structure |
| CN218975317U (en) * | 2022-11-10 | 2023-05-05 | 珠海市惟达电子有限公司 | Improved structure of push switch |
-
2024
- 2024-03-18 CN CN202410306451.1A patent/CN117894618B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05225855A (en) * | 1992-02-15 | 1993-09-03 | Matsushita Electric Works Ltd | Small switch |
| JP2003068164A (en) * | 2001-08-28 | 2003-03-07 | Matsushita Electric Works Ltd | Switch |
| KR101255681B1 (en) * | 2012-02-09 | 2013-04-17 | 주식회사 에이 씨 에스 | Lock switch |
| US20180025855A1 (en) * | 2016-07-22 | 2018-01-25 | Alps Electric Co., Ltd. | Switch device and method for manufacturing switch device |
| CN106128828A (en) * | 2016-08-29 | 2016-11-16 | 仝达机电工业（惠州）有限公司 | A kind of novel switched |
| CN213212003U (en) * | 2020-08-18 | 2021-05-14 | 珠海市惟达电子有限公司 | Push switch |
| CN218004680U (en) * | 2022-06-08 | 2022-12-09 | 珠海市惟达电子有限公司 | Push switch structure |
| CN218975317U (en) * | 2022-11-10 | 2023-05-05 | 珠海市惟达电子有限公司 | Improved structure of push switch |
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| Publication number | Publication date |
|---|---|
| CN117894618B (en) | 2024-05-24 |
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