CN207409397U

CN207409397U - A kind of travel switch

Info

Publication number: CN207409397U
Application number: CN201721433530.0U
Authority: CN
Inventors: 余丽华
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2018-05-25
Anticipated expiration: 2027-10-31

Abstract

The utility model discloses a kind of travel switches, including housing, accommodating cavity is equipped in housing, at least two groups of moving contacts and the matched static contact of moving contact, push rod and wire connection terminal are equipped in accommodating cavity, push rod is set with housing in slip and the top surface of housing is stretched out in part, push rod is set with moving contact in linkage, static contact is with wire connection terminal in electrical connection, one of which static contact is normally off with moving contact, another group is normally open, and the switching of normally off and normally open is moved by push rod；It is characterized in that：One side of the housing in addition to top surface is equipped with connection jaws, and wire connection terminal sets up separately by two adjacent sides of the side；The utility model has the characteristics that easy-to-connect, space availability ratio are high.

Description

A kind of travel switch

Technical field

The utility model is related to a kind of travel switches.

Background technology

Travel switch can utilize the collision of moving component make its contact action, to realize connection or disjunction control circuit Effect.In general, such switch is used to position or the stroke of limit mechanical movement, make movable machinery by certain position or stroke from Dynamic stopping, counter motion, variable motion or automatic back and forth movement etc..As described in 201420731136.5 document of China Patent No. Travel switch, including one group of long static contact, one group of short static contact, push rod and moving contact, moving contact activity be arranged on two Between group static contact, push rod is set with moving contact in linkage, is realized contact of the moving contact with static contact by push rod, is realized normally closed With the switching of normally opened track circuit.Such travel switch is connected in installation process by stent 4 with control main body；But such structure Travel switch, as shown in Figure 1, push rod is located at directly over travel switch, connect the terminals of long static contact and short static contact Son 11 is respectively positioned on the underface of travel switch and in being arranged side by side, i.e., is located at side by side beside bottom surface, since wire connection terminal 11 is simultaneously Row is set, and causes space more crowded, is unfavorable for assembling and wiring.

The content of the invention

The utility model is mainly solving the technical problems that provide a kind of travel switch with easy-to-connect.

Technical solution is used by the utility model solves its technical problem：A kind of travel switch, including housing, shell Accommodating cavity is equipped in vivo, and at least two groups of moving contacts, static contact matched with moving contact, push rod are equipped in accommodating cavity and is connect Line terminals, push rod is with housing in the top surface for setting and partly stretching out housing is slided, and push rod is with moving contact in linkage setting, stationary contact Head is with wire connection terminal in electrical connection, and one of which static contact is normally off with moving contact, and another group is normally open, is passed through Push rod moves so that the switching of normally off and normally open；Wherein, one side of the housing in addition to top surface is equipped with connection jaws, connects Line terminals set up separately by two adjacent sides of the side.

Set up separately using wire connection terminal on two sides adjacent with side where connection jaws, avoid wire connection terminal side by side It sets, the prior art that compares wire connection terminal is arranged side by side the setting in bottom, adopts the structure, and solves wiring difficulty Problem so that wiring is more easy, while so that more aesthetically pleasing after wiring.

Wherein, housing is included in the upper cover and pedestal being detachably fixed, and accommodating cavity is collectively formed with pedestal in upper cover.

Housing is used and is detachably fixed so that more convenient in subsequent installation maintenance process.

Wherein, pedestal is equipped with screw hole, and tightening portion is equipped in screw hole, and bolt is formed through upper cover and the tightening portion of screw hole It is threadedly coupled.

Tightening portion is specially that aperture is less than screw hole, but is just adapted to bolt so that bolt is formed when through tightening portion Screw thread, since bolt movement generates heat so that bolt is stretched in tightening portion, when tightening portion cools down, tightening portion grip bolt causes Fixation more fastens.

Wherein, further include isolation board, isolation board between two adjacent groups moving contact, between isolation board and moving contact away from With a distance from being moved after being driven more than moving contact drawn stem.

Effect of the isolation board between two adjacent groups moving contact prevents electric arc or climbs electricity, forms electrical isolation；Every Setting with a distance between plate and moving contact, anti-throw-out lever driving are influenced be subject to isolation board.

Wherein, spring is equipped between two adjacent groups moving contact, both ends of the spring offsets respectively at two groups of moving contacts.

Using the setting of spring so that in the process of running, moving contact is contacted with static contact more to be stablized push rod, ensures to connect The efficiency connect.

Wherein, base front surface is equipped with boss.

The setting of boss so that travel switch forms gap in assembling process between stent, facilitates external torsional spring Installation.

Wherein, resetting spring II is further included, push rod bottom is equipped with spring base, and II one end of resetting spring offsets with spring base, The other end offsets with inner walls.

The setting of spring base so that resetting spring II is fixed more convenient, while the effect of resetting spring II causes push rod It easily resets, ensures electrical connection.

Wherein, wire connection terminal is distributed on four angles of pedestal, and notch, terminals are equipped at four corner locations of upper cover Subdivision is exposed by corresponding notch.

Wire connection terminal is located at the setting on four angles of cavity, and four wire connection terminals of the prior art that compares are arranged side by side, adopt With such structure, the internal structure of cavity is changed so that the space availability ratio of cavity greatly improves so that the thickness of static contact It improves, increases its resistance to pressure.

Wherein, upper lid is equipped with isolation bar, and isolation bar is located at close to the wire connection terminal of connection jaws and connecing away from connection jaws Between line terminals.

The setting of isolation bar enhances electrical between the wire connection terminal close to connection jaws and the wire connection terminal away from connection jaws Interval, phenomena such as preventing to climb electricity, electric arc.

Wherein, the cable hole that isolation bar is penetrated with connection jaws formation for conducting wire.

The setting of cable hole so that the cabling more specification between outer lead and wire connection terminal improves whole beauty Property.

Description of the drawings

Fig. 1 is prior art travel switch and the schematic diagram of stent installation；

Fig. 2 is 1 positive structure diagram of the utility model embodiment；

Fig. 3 is the exploded perspective view of the utility model embodiment 1；

Fig. 4 is the structure diagram at 1 back side of the utility model embodiment；

Fig. 5 is the structure diagram of moving contact and spring in the utility model embodiment 1；

Fig. 6 is the internal structure schematic diagram of the utility model embodiment 1；

Fig. 7 is the structure diagram of static contact in the utility model embodiment 1

Fig. 8 is the sectional view in the utility model embodiment 1；

Fig. 9 is 1 travel switch of the utility model embodiment and the schematic diagram of stent installation;

Figure 10 is the structure diagram of the utility model embodiment 2.

Specific embodiment

Embodiment 1：

Referring to the drawings shown in 2-9, a kind of travel switch, including housing 5, housing 5 includes pedestal 1 and upper cover 2, pedestal 1 With 2 the two of upper cover in being detachably connected, internal after the two cooperation to form an accommodating cavity 3,3 is quiet equipped with two groups in accommodating cavity 31, two groups of moving contacts 32 of contact, push rod 33, equipped with the spring 35 and resetting spring II 36 between two groups of moving contacts, static contact 31 include static contact I 311 and static contact II 312, and moving contact 32 includes moving contact I 321 and moving contact II 322；Static contact I 311 with moving contact I 321 be normally off, and static contact II 312 and moving contact II 322 are normally open, are made by the movement of push rod 33 The switching of normally off and normally open is obtained, two groups of static contacts 31 are that contact 39 is set with 32 contact portion of moving contact herein, Contact 39 is specially truncated cone-shaped, and top surface is plane.

1 top of pedestal is equipped with stroke groove I 15, and stroke groove I 15 is between wire connection terminal I 111 and wire connection terminal II 112； Stroke groove II 16 is equipped at 2 correspondence course slot I 15 of upper cover herein, guiding is collectively formed with II 16 the two of stroke groove in stroke groove I 15 Structure；Housing 5 is stretched out at 33 top of push rod, and the size of push rod 33 is adapted to stroke groove I 15 and stroke groove II 16, and push rod 33 is expert at It is slided in journey slot I 15 and stroke groove II 16, push rod 33 is equipped with through hole II 332, and through hole II 332 is specifically along the radial direction side of push rod 33 To opening up, 33 bottom of push rod is set there are two the convex block 331 diagonally set, and two 331 corresponding surfaces of convex block are cambered surface, two convex blocks 331 form spring base 333 with the bottom surface of push rod 33, and II 36 one end of resetting spring offsets with spring base 333, the other end and housing 5 Inner wall offsets.

Card slot 37 is equipped on two groups of moving contacts 34,37 size of card slot is adapted with the width of push rod 33, two moving contacts 34 in through hole II 332 and buckle is fixed on inside push rod 33, and is in be arranged in parallel up and down.

Two groups of 34 corresponding surfaces of moving contact are equipped with locating slot 38, and spring 35 is located between two moving contacts 34, while spring 35 Both ends are separately fixed in locating slot 38 so that 35 both ends of spring offset with two moving contacts 34；The another kind of spring 35 herein Mounting means is：Two moving contacts 34 exceed the height of push rod 33, and spring 35 is set on push rod 33 and is moved respectively with two and touched First 34 offset, fixed spring 35.

It is set on pedestal 1 there are four wire connection terminal 11 and screw hole 12, wire connection terminal 11 is located at four angles of pedestal 1 respectively On so that switch internal space availability ratio increases, while prevents two neighboring wire connection terminal 11 from generating electric arc, and influencing it normally makes With.Two are one group in four wire connection terminals 11, and upper and lower two groups of wire connection terminals 11 are set in parallel, two wire connection terminals in one group In setting is disconnected between 11, conducting is connected with static contact 31 by moving contact 32.

Position limiting structure, static contact I 311 and static contact II 312 are formed between four wire connection terminals 11 and the side wall of pedestal 1 Include fixed part 313 and contact site 314, fixed part 313 is fastened in position limiting structure, and static contact 31 is consolidated by position limiting structure Fixed, contact site 314 is static contact 31 and 32 contact portion of moving contact；The pressure-resistant of static contact 31 is usually subject to its thickness effect, If its thickness increases, pressure-resistant also to enhance, therefore the size of position limiting structure is adapted to the thickness that static contact is actually needed herein, specific big I is adjusted according to actual demand；The group number of wire connection terminal 11 can be adjusted according to actual demand herein, differed and be set to two groups.

1 side wall of pedestal is equipped with connection jaws 131, and notch 25, wire connection terminal 11 are equipped at four corner locations of upper cover 2 Point exposed by corresponding notch 25, upper cover 2 is located at one side outside pedestal 1 equipped with four groups of isolation bars 22, and four groups of isolation bars 22 enclose Around notch 25, one side of four groups of isolation bars 22 towards connection jaws 131 offers cable hole 24, positioned at close to the two of connection jaws 131 Cable hole 24 on a isolation bar 22 is formed by isolation bar 22 and connection jaws 131, is located remotely from two isolation bars of connection jaws 131 22 cable hole 24 is opened in it and corresponds on one side of connection jaws 131.Isolation bar 22 can form the effect of electrical isolation, prevent Phenomena such as climbing electricity, the effect of cable hole 24 are connected for conducting wire, and conducting wire is through connection jaws 131 and cable hole 24 with connecing Line terminals 11 connect.

Upper cover 2 be equipped with 12 corresponding through hole I 21 of screw hole and spacer 23, tightening portion 27, bolt are equipped in screw hole It through upper cover and the tightening portion 27 of screw hole, is formed and is threadedly coupled so that pedestal 1 forms an accommodating cavity 3 with upper cover 2 so that For pedestal 1 with upper cover in detachable fixation, the specially aperture of the portion of tightening herein 27 is less than the aperture of screw hole, but the hole in tightening portion 27 Footpath is just adapted to bolt so that bolt forms screw thread when through tightening portion 27, since bolt movement generates heat so that bolt is stretched Enter to tightening portion 27, when tightening portion 27 cools down, 27 grip bolt of tightening portion causes fixation more to fasten.

Further, screw hole 12 connects pedestal 1 and cavity so that bolt is solid through through hole I 21 and screw hole 12 and stent 4 It is fixed so that switch links together with stent 4；After pedestal 1 coordinates with upper cover 2, spacer 23 is located at moving contact I 321 and moves Between contact II 322.It is set on pedestal 1 there are four boss 17, two of which boss 17 is turned on screw hole 12, one of boss 17 Close to 33 top position of push rod, another boss 17 is away from 33 top of push rod, and four boss 17 are so that the lift of 1 overall leveling of pedestal It is high so that gap to be formed between pedestal 1 and stent 4, convenient for the placement of external torsional spring.

Embodiment 2：

Referring to the drawings shown in 10, difference lies in be equipped with connection jaws to embodiment 2 on the bottom of pedestal 1 with embodiment 1 131, two wire connection terminals, 11 isolation bar 22 close to connection jaws 131 forms cable hole 24 with connection jaws 131, away from connection jaws Isolation bar 22 on 131 two wire connection terminals 11 is equipped with cable hole 24, and cable hole 24 is oppositely arranged, and isolation bar 22 forms one Cabling channel 26；26 one end of cabling channel is connected with the cable hole 24 on two wire connection terminals 11 away from connection jaws 131, the other end It is connected with connection jaws 131, the effect of cable hole 24 is connected for conducting wire, and conducting wire is through connection jaws 131, cabling channel 26 and walks String holes 24 is connected with wire connection terminal 11.

Claims

1. a kind of travel switch, including housing, accommodating cavity is equipped in housing, be equipped in accommodating cavity at least two groups of moving contacts, Static contact matched with moving contact, push rod and wire connection terminal, push rod is set with housing in slip and housing is stretched out in part Top surface, push rod are set with moving contact in linkage, and static contact is with wire connection terminal in electrical connection, one of which static contact and moving contact For normally off, another group is normally open, and the switching of normally off and normally open is moved by push rod；Its feature exists In：One side of the housing in addition to top surface is equipped with connection jaws, and wire connection terminal sets up separately by two adjacent sides of the side.

2. travel switch as described in claim 1, it is characterised in that：Housing is included in the upper cover and pedestal being detachably fixed, Accommodating cavity is collectively formed with pedestal in upper cover.

3. travel switch as claimed in claim 2, it is characterised in that：Pedestal is equipped with screw hole, and tightening portion, spiral shell are equipped in screw hole Bolt is formed and is threadedly coupled through upper cover and the tightening portion of screw hole.

4. travel switch as claimed in claim 1 or 2, it is characterised in that：Isolation board is further included, isolation board is located at two adjacent groups Between moving contact, the distance between isolation board and moving contact are more than the distance moved after the driving of moving contact drawn stem.

5. travel switch as claimed in claim 4, it is characterised in that：Spring, spring two are equipped between two adjacent groups moving contact End offsets respectively at two groups of moving contacts.

6. travel switch as described in claim 1, it is characterised in that：Base front surface is equipped with boss.

7. travel switch as described in claim 1, it is characterised in that：Resetting spring II is further included, push rod bottom is equipped with spring Seat, II one end of resetting spring offset with spring base, and the other end offsets with inner walls.

8. travel switch as claimed in claim 2, it is characterised in that：Wire connection terminal is distributed on four angles of pedestal, upper cover Four corner locations at be equipped with notch, connection terminal portion is exposed by corresponding notch.

9. travel switch as claimed in claim 8, it is characterised in that：Upper lid is equipped with isolation bar, and isolation bar is located at by proximity Between the wire connection terminal of the wire connection terminal of line mouth and separate connection jaws.

10. travel switch as claimed in claim 9, it is characterised in that：Isolation bar is penetrated with connection jaws formation for conducting wire Cable hole.