CN212874281U - Novel travel switch - Google Patents

Abstract

The utility model provides a novel travel switch belongs to the technical field of safety control spare. A novel travel switch comprises a shell, a striker, a steel wire, an electromagnetic assembly and a contact; the utility model has the advantages that the shaft sleeve with the circle of flange is sleeved on the striker, and the steel wire matched with the flange is arranged, so that any area of the flange arranged on the shaft sleeve in a circle can be matched with the steel wire, the problem that the flange can not contact the steel wire due to the rotation of the shaft sleeve is avoided, the non-directional installation can be realized, and the assembly is more convenient; in addition, the bottom of the electromagnetic assembly is provided with a fixing hole, and the shell is provided with a mounting hole corresponding to the fixing hole, so that the fixing structure of the electromagnetic assembly is hidden below the electromagnetic assembly, the problem that the spaces on two sides of the electromagnetic assembly are occupied is avoided, wiring is facilitated, and assembly is facilitated; still directly stretch out the protective housing with the both ends of the wire of the coil of electromagnetic component outside, avoided the problem that needs the lead wire in addition, the reliability is higher, and it is more convenient to assemble.

Description

Novel travel switch

Technical Field

The utility model relates to a technical field of safety control spare specifically is to relate to a novel travel switch.

Background

In the application of electric automation, the travel switch is used as a motion limiting structure, and the on-off of a related circuit is realized through the collision of an external related structure on a contact of the travel switch, so that a certain control purpose is achieved.

At present, a travel switch is generally used in a safety protection system of an elevator, a protrusion is arranged at the bottom area of a shaft sleeve of a connecting contact of the existing travel switch, a steel wire matched with the protrusion is arranged in a shell, and the steel wire limits the movement of the shaft sleeve with the protrusion, so that the fixing of the position of the ejected contact is realized, the contact is ensured to be retracted after being collided in the subsequent use process, the disconnection of a safety circuit is realized, and the safety protection of the elevator is realized. However, the protrusion on the shaft sleeve of the travel switch is only arranged in the bottom area, if the shaft sleeve deflects in the using process, the protrusion on the shaft sleeve cannot correspond to the steel wire, and the contact cannot be fixed after being ejected. In addition, the electromagnetic structure in the existing travel switch adopts a structure that fixing pins are led out from two sides to be fixed in the shell, so that the space in the shell and positioned on two sides of the electromagnetic structure is small, the wiring is not favorable, and the later assembly is inconvenient.

Disclosure of Invention

In order to solve the above problems in the prior art, it is an object of the present invention to provide a novel travel switch, wherein a ring of flange is disposed on a shaft sleeve for connecting a contact, the flange is wound on an outer wall of the shaft sleeve, and is in contact with a steel wire through the flange, so that the shaft sleeve can rotate and the flange can still contact the steel wire to realize limiting without arranging a positioning insertion rod on the shaft sleeve, the processing technology is simpler, the direction is not required to be determined during assembly, and the installation is more convenient, in addition, a fixing hole is disposed at the bottom of a housing and below an electromagnetic structure, the electromagnetic structure is fixed in the housing through the fixing hole, so that the fixing structure of the electromagnetic structure is hidden, the occupied space of the electromagnetic structure is reduced, the wiring is facilitated, the later assembly is more convenient, and the two ends of a wire forming a coil in the electromagnetic assembly directly extend out of the housing, thereby avoiding the problems of multiple welding and poor contact caused by the additional, the reliability is higher, and the assembly is also convenient.

The specific technical scheme is as follows:

a novel travel switch having the features comprising:

the device comprises a shell, a first fixing device and a second fixing device, wherein the shell is provided with a box body and an upper cover covering the box body, a partition board is transversely arranged in an inner cavity of the box body and divides the inner cavity of the box body into a control cavity and a reset cavity, a connecting hole is formed in the middle of the partition board, and the control cavity and the reset cavity are communicated through the connecting hole;

the spring is arranged between the contact piece and the insulating sleeve and positioned on one side of the contact piece close to the partition plate;

the steel wire is arranged in the control cavity and positioned below the shaft sleeve, and the steel wire is arranged along the axial direction perpendicular to the shaft sleeve;

the electromagnetic assembly is arranged in the reset cavity, the ejector rod of the electromagnetic assembly is arranged towards the connecting hole, meanwhile, the bottom of the electromagnetic assembly is provided with a fixing hole, a mounting hole corresponding to the fixing hole is formed in the box body and located below the electromagnetic assembly, the fixing hole is connected with the mounting hole through a screw, and meanwhile, two ends of a wire of a coil of the electromagnetic assembly directly extend out of the protective shell of the electromagnetic assembly;

the contact, the contact divide into first contact and second contact, and first contact and second contact all set up in the control chamber and are located the both sides that hit the pole respectively, and first contact and second contact correspond with the both ends that the contact extended out respectively.

The novel travel switch comprises contacts and contact plates, wherein the contacts and the contact plates are arranged in two groups, the two groups of contact plates are all sleeved on an insulating sleeve and are arranged at intervals in the front and back direction along the axial direction of a collision rod, springs are arranged between each contact plate and the insulating sleeve and are located on one side, close to a partition plate, of each contact plate, meanwhile, the two groups of contact plates are arranged on a box body, the two groups of contact plates are arranged at intervals in the control cavity in the front and back direction along the axial direction of the collision rod, one group of contact plates correspond to one group of contact plates, and a first contact and a second contact in one group of contact plates correspond to two ends of the.

The novel travel switch comprises a contact and a rod body, wherein the contact is located at one end of the rod body, the cross section of the contact is larger than that of the rod body, a step is formed at the joint of the contact and the rod body, the shaft sleeve is sleeved outside the rod body, one end of the shaft sleeve abuts against the step, the other end of the rod body is inserted into the connecting hole, meanwhile, a circle of clamping groove is formed in the outer wall of the rod body, which is located at one end of the rod body inserted into the connecting hole, and a clamping spring is arranged in the clamping groove.

The novel travel switch comprises a sleeve and a blocking ring, the sleeve is sleeved outside a rod body and located on one side, away from a step, of the shaft sleeve, one end of the sleeve abuts against one side, away from the step, of the shaft sleeve, the blocking ring is sleeved on the other end of the sleeve, one end, provided with the blocking ring, of the sleeve abuts against a clamp spring, meanwhile, the outer wall of the sleeve is provided with a round protruding blocking edge, the two sides, located on the blocking edge, of the sleeve are provided with a group of contact pieces and a corresponding spring respectively, and the two groups of contact pieces are separated by the blocking edge.

The novel travel switch comprises a sleeve, a shaft sleeve, a contact piece, a spring sleeve, a spring, a contact piece and a stop ring, wherein the sleeve is provided with a stop ring, the stop ring is arranged on the sleeve, the spring is sleeved on the sleeve, the contact piece is sleeved on the stop ring, the stop ring is sleeved on the sleeve, the spring is sleeved on the sleeve, the stop ring is sleeved on the sleeve, the contact piece is sleeved on the stop ring, the stop ring is sleeved on the sleeve, and the stop ring is sleeved.

Foretell novel travel switch, wherein, the control intracavity just is located and is provided with two bumping posts on the box body, and two bumping posts set up to keep off along with being close to between the contact of axle sleeve, and two bumping posts are located the both sides of insulating cover respectively, and simultaneously, the interval that keeps off between the post is less than the diameter that keeps off the edge.

The novel travel switch is characterized in that a wire outlet hole is formed in the box body and is located on the side wall, away from the control cavity, of the reset cavity.

The novel travel switch is characterized in that one of the two groups of contacts is connected to the safety circuit, the first contact and the second contact of the group of contacts are connected with the two wires of the safety circuit respectively, the two wires of the safety circuit extend out of the box body from the wire outlet of the reset cavity after passing through the partition plate from the control cavity, and the two wires of the safety circuit pass through the two sides of the electromagnetic assembly respectively.

The novel travel switch is characterized in that two wiring ends are arranged on the box body and in the reset cavity, the two wiring ends are respectively located on two sides of the electromagnetic assembly and are respectively connected with two wires of the reset circuit, the two wires of the reset circuit stretch out of the box body from the wire outlet, and meanwhile, two ends of the coil of the electromagnetic assembly, stretching out of the protective shell body, are respectively connected to the two wiring ends.

The novel travel switch is characterized in that the outer wall of the box body is provided with a convex clamping block, the upper cover is provided with a clamping hole corresponding to the clamping block, and the box body is connected with the upper cover in a clamping manner.

The positive effects of the technical scheme are as follows:

the novel travel switch is characterized in that the inner cavity of the box body is divided into a control cavity and a reset cavity through the partition plate, the striker, the shaft sleeve, the steel wire, the insulating sleeve, the contact piece and the contact are arranged in the control cavity, the electromagnetic assembly is arranged in the reset cavity, the insulating sleeve on the striker can bring the contact piece to be separated from the contact when the contact of the striker is collided, the disconnection of a safety circuit is realized, the electromagnetic assembly can push the striker to reset after the electromagnetic assembly is electrified, the shaft sleeve on the striker is limited by the steel wire, the fixation of the position of the contact is realized, the next collision is waited, in addition, the flange matched with the steel wire on the shaft sleeve is wound on the outer wall of the shaft sleeve for one circle, the problem that the flange cannot contact the steel wire due to rotation of the shaft sleeve in the use process is avoided, the reliability is higher, the non-directional installation can be realized, the, the mounting hole that corresponds in the fixed orifices is provided with in the below that just is located electromagnetic component on the box body for electromagnetic component's fixed knot constructs to be hidden, avoid occuping to electromagnetic component both sides space, the wiring of being convenient for has made things convenient for the assembly equally, in addition, still directly stretch out its protective housing with the both ends of the wire that constitutes the coil in the electromagnetic component outside, can directly be connected with reset circuit, the reliability that the wire of having avoided the coil needs other lead-out wires to lead to is low, the loaded down with trivial details problem of process, more do benefit to the assembly.

Drawings

Fig. 1 is a view angle diagram of an embodiment of a novel travel switch of the present invention;

fig. 2 is a structural diagram of another view angle of an embodiment of a novel travel switch of the present invention;

fig. 3 is a structural view of the present invention after the upper cover is opened;

FIG. 4 is a structural diagram of a striker according to a preferred embodiment of the present invention;

FIG. 5 is a schematic view of a shaft sleeve according to a preferred embodiment of the present invention;

fig. 6 is a structural diagram of an insulating sheath according to a preferred embodiment of the present invention.

In the drawings: 1. a housing; 11. a box body; 12. an upper cover; 111. a control chamber; 112. a reset chamber; 113. a partition plate; 114. a clamping block; 1111. a bumping post; 1121. mounting holes; 1122. a wire outlet hole; 1123. a terminal; 1131. connecting holes; 2. a ram; 21. a contact; 22. a rod body; 23. a shaft sleeve; 24. an insulating sleeve; 25. a contact piece; 26. a spring; 221. a card slot; 231. a flange; 241. a sleeve; 242. a baffle ring; 2411. blocking edges; 3. a steel wire; 4. an electromagnetic assembly; 41. a top rod; 42. a fixing hole; 5. a contact; 51. a first contact; 52. a second contact; 6. a safety circuit; 7. a reset circuit; 8. a rectifier; 9. a rubber ring.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 6, but the following contents are not intended to limit the present invention.

Fig. 1 is a view angle diagram of an embodiment of a novel travel switch of the present invention; fig. 2 is a structural diagram of another view angle of an embodiment of a novel travel switch of the present invention; fig. 3 is a structural diagram of the present invention after the upper cover is opened. As shown in fig. 1, 2 and 3, the novel travel switch provided by the present embodiment includes: shell 1 and set up lance 2 in shell 1, steel wire 3, electromagnetic component 4 and contact 5, wherein, be provided with on lance 2 with 3 complex axle sleeves 23 of steel wire and with 5 complex contact 25 of contact for when lance 2 is touched, axle sleeves 23 can separate with steel wire 3, and simultaneously, contact 5 separates with contact 25, realizes the disconnection of safety circuit 6, realizes the control to the stroke, in addition, electromagnetic component 4 can promote lance 2 and reset, waits for the collision next time.

Specifically, the housing 1 includes the box body 11 and the upper cover 12 covering the box body 11, and a partition 113 is transversely disposed in the inner cavity of the box body 11, at this time, the partition 113 divides the inner cavity of the box body 11 into the control cavity 111 and the reset cavity 112, and a connecting hole 1131 is formed in the middle of the partition 113, so that the control cavity 111 and the reset cavity 112 are communicated through the connecting hole 1131, thereby providing conditions for resetting the striker 2. In addition, in order to ensure that the striker 2 is in the process of moving.

Specifically, the plunger 2 is disposed in the control cavity 111 and is movable in the control cavity 111, and one end of the plunger 2 is inserted into the connecting hole 1131 and the other end extends out of the case 11, so that the plunger 2 can move along the axial direction thereof. Therefore, in order to prevent the striker 2 from falling off from the connecting hole 1131 during the moving process, a protruding surrounding wall is disposed on one side or both sides of the connecting hole 1131 to extend the length of the connecting hole 1131, so that the allowable moving distance of the striker 2 in the connecting hole 1131 is longer, thereby preventing one end of the striker 2 from falling off from the connecting hole 1131, and the structural reliability is higher. In addition, the contact 21 is arranged at one end of the plunger 2 extending out of the box body 11, and the contact 21 of the plunger 2 is used for receiving the collision of external objects, thereby providing conditions for the subsequent movement of the plunger 2. In addition, a shaft sleeve 23 is fixedly sleeved on the striker 2 in the control cavity 111, and a circle of flange 231 is arranged on the outer wall of the shaft sleeve 23, so that not only is the position fixation realized by the clamping of the flange 231 on the subsequent shaft sleeve 23 through the steel wire 3, but also the shaft sleeve 23 can move along with the striker 2, when the striker 2 is impacted to move, the shaft sleeve 23 can also move, and a structural basis is provided for the separation of the subsequent shaft sleeve 23 and the steel wire 3. Meanwhile, the plunger 2 in the control cavity 111 is fixedly sleeved with an insulating sleeve 24, the insulating sleeve 24 is positioned between the shaft sleeve 23 and the partition 113, so that the insulating sleeve 24 can move along with the plunger 2, the contact 25 is movably sleeved on the insulating sleeve 24, so that the contact 25 can move on the insulating sleeve 24, two ends of the contact 25 respectively extend towards two sides of the plunger 2 and along the radial direction of the plunger 2, a structural basis is provided for connection and separation of the subsequent contact 25 and the contact 5, meanwhile, a spring 26 is arranged between the contact 25 and the insulating sleeve 24 and on one side of the contact 25 close to the partition 113, so that the contact 25 can be limited in the range of the insulating sleeve 24 by the spring 26, a thrust is provided for contact of the subsequent contact 25 and the contact 5, and a thrust is provided for retraction movement of the subsequent plunger 2 after the contact 21 of the subsequent plunger is collided.

Specifically, the steel wire 3 is disposed in the control cavity 111 and below the shaft sleeve 23, and the middle portion of the steel wire 3 is in an empty state, that is, a gap is disposed between the middle portion of the steel wire 3 and the bottom of the box body 11, so as to provide an avoidance space for elastic deformation of the steel wire 3, and the steel wire 3 is disposed along an axial direction perpendicular to the shaft sleeve 23, so that when the striker 2 is in an extended state, the striker 2 drives the shaft sleeve 23 to move, at this time, the flange 231 on the shaft sleeve 23 can be clamped by the steel wire 3, so that the striker 2 cannot drive the shaft sleeve 23 to naturally retract, so as to temporarily fix the position of the contact 21 of the striker 2, thereby providing a condition for the contact 21 of the subsequent striker 2 to be collided by an external component, and after the contact 21 is collided, the striker 2 is subjected to an axial thrust, so that the shaft sleeve 2 drives the shaft sleeve 23 to move, at this time, the shaft sleeve 23 overcomes the limitation of the steel, therefore, the plunger 2 can retract, so that the state of the plunger 2 can be switched, the plunger 2 drives the contact piece 25 on the insulating sleeve 24 to move, and conditions are provided for on-off control of the safety circuit 6.

Specifically, the electromagnetic assembly 4 is disposed in the reset cavity 112 of the box body 11, the electromagnetic assembly 4 further includes the ejector rod 41, the coil and the protection housing, and at this time, the ejector rod 41 of the electromagnetic assembly 4 is disposed toward the connection hole 1131, so that when the ejector rod 41 moves, the ejector rod 41 can push the striker 2 extending into the connection hole 1131, thereby providing a condition for resetting the striker 2. Simultaneously, the bottom of electromagnetic component 4 is provided with fixed orifices 42, preferably, fixed orifices 42 set up on the protection casing, and be provided with the mounting hole 1121 that corresponds with fixed orifices 42 on box body 11 and the below that is located electromagnetic component 4, and fixed orifices 42 and mounting hole 1121 pass through screw connection, make the fixed knot of electromagnetic component 4 construct and be located its below, avoided setting up the fixed knot of electromagnetic component 4 in current structure in its both sides and occupy a large amount of space's problem, thereby make the direction of safety circuit 6 can be smooth pass through in the space of the both sides of electromagnetic component 4, more convenient wiring, do benefit to the assembly in later stage. Meanwhile, two ends of a lead wire forming the coil of the electromagnetic component 4 directly extend out of the protective shell of the electromagnetic component 4, namely, in the production and manufacturing process of the coil of the electromagnetic component 4, two ends of the lead wire of the coil are provided with longer connector lugs, and the remained longer connector lugs directly extend out of the protective shell, so that the subsequent coil is conveniently connected into the reset circuit 7, the problem that the two connectors of the coil are welded with lead-out leads in the existing coil structure and then connected into the reset circuit 7 through the lead-out leads is avoided, not only the connection hidden troubles such as poor contact are eliminated, the reliability is improved, but also the processing procedures are reduced, the installation is more convenient, the later-stage assembly is more facilitated, in addition, an AC/DC rectifier 8 is also arranged in a connection loop of the coil and the reset circuit 7, two ends of the lead wire of the coil are connected onto the rectifier 8 and then connected into the reset circuit 7 through the, the normal operation of the electromagnetic assembly 4 is ensured. In addition, ejector rod 41 that electromagnetic component 4 includes, the installation relation between coil and the protection casing is unanimous with the coil structure commonly used on the market at present, the outside of ejector rod 41 is enclosed and is equipped with the coil, the outside parcel of coil has the protection casing, after the coil circular telegram, the ejector rod 41 removal can be promoted to the magnetic field that the coil produced, consequently, this electromagnetic component 4's inner structure adopts the mode that directly stretches out the protective housing outside to arrange except that the wire both ends of coil, the structural arrangement relation and the connection between ejector rod 41, coil and the protection casing three are not in the protection scope disclosed in this embodiment.

Specifically, the contact 5 is divided into a first contact 51 and a second contact 52, at this time, the first contact 51 and the second contact 52 are both disposed in the control cavity 111 and respectively located at two sides of the plunger 2, and the first contact 51 and the second contact 52 respectively correspond to two ends of the extended contact 25, so that when the plunger 2 moves, the plunger 2 can drive the contact 25 to move through the insulating sleeve 24, so that two ends of the contact 25 contact the first contact 51 and the second contact 52, that is, the first contact 51 and the second contact 52 are conducted through the contact 25, or two ends of the contact 25 are respectively separated from the first contact 51 and the second contact 52, that is, the first contact 51 and the second contact 52 are disconnected due to the separation of the contact 25, thereby implementing on-off control of the safety circuit 6.

More specifically, contact 5 and contact 25 in the box body 11 all are provided with two sets ofly, and two sets of contacts 25 all overlap and locate on insulating cover 24 and be around the axial of lance 2 interval arrangement, are provided with the clearance between two sets of contacts 25 promptly, conveniently realize insulating, and the moving direction of two sets of contacts 25 is unanimous simultaneously, has guaranteed that the on-off control of two sets of contacts 25 is unanimous. And, all be provided with spring 26 between every contact 25 and the insulating cover 24, spring 26 all is located the contact 25 and is close to one side of baffle 113, even make every group contact 25 all be supported tightly by spring 26, not only can make contact 25 compress tightly by spring 26 when contacting contact 5, prevent the emergence of contact failure scheduling problem, still make when contact 21 is collided and make the striking pin 2 receive the axial force that contracts, spring 26 can further promote the striking pin 2 and remove, provide the condition for striking pin 2 drives contact 25 and separates from contact 5. In addition, two sets of contacts 5 are all arranged on the box body 11, and two sets of contacts 5 are arranged in the control cavity 111 in the axial direction of the striking rod 2 at intervals in the front-back direction, and one set of contacts 5 corresponds to one set of contact pieces 25, and the first contact 51 and the second contact 52 in one set of contacts 5 correspond to two ends of the corresponding set of contact pieces 25 respectively, at this time, in order to ensure that the contact effect of the two sets of contact pieces 25 and the corresponding contacts 5 is the same, the distance between the two sets of contacts 5 can be the same as the distance between the two sets of contact pieces 25. In addition, in the use process, one group of the contacts 5 and the corresponding group of the contact pieces 25 can be selected to realize the connection of one safety circuit 6, and two groups of the contacts 5 and the corresponding two groups of the contact pieces 25 can be simultaneously selected to realize the simultaneous connection of two safety circuits 6, so that the selectivity is higher, and the adaptability is higher.

Fig. 4 is a structural diagram of a lance according to a preferred embodiment of the present invention. As shown in fig. 1 to 4, the plunger 2 includes a contact 21 and a rod 22, at this time, the contact 21 is located at one end of the rod 22, the contact 21 extends out of the case 11, the contact 21 can move along with the rod 22, and the cross section of the contact 21 is larger than that of the rod 22, and a step is formed at the connection position of the contact 21 and the rod 22, that is, the plunger 2 forms a structure with a "T" shaped longitudinal section, and a bushing 23 is sleeved outside the rod 22 and one end of the bushing 23 abuts against the step, the bushing 23 is located in the control cavity 111, that is, one end of the bushing 23 can be limited by the step, so as to prevent the movement of the bushing 23, provide a condition for realizing the limitation of the plunger 2 by subsequently clamping the bushing 23 by the steel wire 3, and the other end of the rod 22 is inserted into the connection hole 1131, so that the two ends of the plunger 2 are installed, thereby ensuring the stability of the. Meanwhile, a circle of clamping groove 221 is formed in the outer wall of the rod body 22 and located at one end, inserted into the connecting hole 1131, of the rod body, a clamping spring is clamped in the clamping groove 221 and can be conveniently separated from the clamping groove 221, a structure for limiting is arranged at one end, close to the partition plate 113, of the rod body 22, and accordingly the subsequent installation of the insulating sleeve 24 is facilitated.

Fig. 5 is a structural diagram of a shaft sleeve according to a preferred embodiment of the present invention. As shown in fig. 1 to 3 and 5, the sleeve 23 is provided with a central hole, the central hole of the sleeve 23 is used for installing the rod body 22 of the striker 2, the sleeve 23 is arranged in a cylindrical structure, one end of the sleeve 23 close to the step on the striker 2 is arranged in a conical surface, and a circle of flange 231 for matching with the steel wire 3 is arranged at the position of the maximum end of the conical surface of the sleeve 23, so that after the flange 231 on the sleeve 23 slides over the steel wire 3, the sleeve 23 can not touch the steel wire 3 any more, thereby ensuring the reliability of the movement of the striker 2 and having a more reasonable structural design.

Fig. 6 is a structural diagram of an insulating sheath according to a preferred embodiment of the present invention. As shown in fig. 1 to fig. 3 and fig. 6, the insulating sleeve 24 sleeved on the plunger 2 further includes a sleeve 241 and a stop ring 242, the sleeve 241 is sleeved outside the rod 22 and located on one side of the shaft sleeve 23 away from the step, and one end of the sleeve 241 abuts against one side of the shaft sleeve 23 away from the step, so that one end of the sleeve 241 is abutted by the shaft sleeve 23, and the limitation of the end of the sleeve 241 is realized. And, the cover is equipped with fender ring 242 on the other end of sleeve 241, and sleeve 241 cover is equipped with the one end that keeps off ring 242 and leans on the jump ring, realizes the spacing to the sleeve 241 other end promptly through the jump ring, and, the outer edge of jump ring still blocks fender ring 242, avoids keeping off ring 242 and drops from sleeve 241, and structural reliability is higher, is fixed in axle sleeve 23 and insulating cover 24 on lance 2 through step and the jump ring on lance 2 promptly for axle sleeve 23 and insulating cover 24 can follow lance 2 synchronous motion. Meanwhile, a circle of convex blocking edge 2411 is arranged on the outer wall of the sleeve 241 and in the middle of the sleeve 241, at this time, two spaces are formed on the sleeve 241 through the blocking edge 2411, namely, along the axial direction of the sleeve 241, a space is formed between the shaft sleeve 23 and the blocking edge 2411, another space is formed between the blocking edge 2411 and the blocking ring 242, a group of contact pieces 25 and a corresponding spring 26 are respectively arranged on two sides of the blocking edge 2411 on the sleeve 241, the two groups of contact pieces 25 are separated by the blocking edge 2411, namely, a group of contact pieces 25 and a corresponding spring 26 are sleeved in the space formed between the shaft sleeve 23 and the blocking edge 2411, a group of contact pieces 25 and a corresponding spring 26 are also sleeved in the other space formed between the blocking edge 2411 and the blocking ring 242, namely, two groups of contact pieces 25 and spring 26 are formed, and thus the structure arrangement of two groups of contacts 5 in the box body 11 is.

More specifically, one set of the contact pieces 25 and the corresponding spring 26 are sleeved outside one end of the sleeve 241 close to the shaft sleeve 23, that is, the contact pieces 25 and the spring 26 are sleeved in a space formed between the shaft sleeve 23 and the blocking edge 2411, and the other set of the contact pieces 25 and the corresponding spring 26 are sleeved outside one end of the sleeve 241 provided with the blocking ring 242, that is, the contact pieces 25 and the spring 26 are sleeved in another space formed between the blocking edge 2411 and the blocking ring 242. In addition, two ends of the spring 26 corresponding to the contact 25 close to the shaft sleeve 23 respectively abut against the contact 25 and the blocking edge 2411, two ends of the spring 26 corresponding to the other contact 25 respectively abut against the contact 25 and the blocking ring 242, that is, the two springs 26 respectively abut against the two contacts 25 on the shaft sleeve 23 and the blocking edge 2411, and the position of the contact 25 on the insulating sleeve 24 can be changed by compressing the corresponding spring 26 on the insulating sleeve 24, so that conditions are provided for subsequently pressing the contact 25 on the corresponding contact 5 and retracting the striking rod 2.

More specifically, in the control chamber 111 and be located box body 11 and be provided with two fender post 1111, two fender posts 1111 set up and keep off along 2411 and be close to between the contact 25 of axle sleeve 23, and two fender posts 1111 are located the both sides of insulating cover 24 respectively, and simultaneously, the interval that keeps off between the post 1111 is less than and keeps off along 2411's diameter, and, the diameter that sets up spring 26 still is less than the interval that keeps off between the post 1111 when being less than the diameter that keeps off along 2411, make when the lance 2 is in the state of stretching out, two keep off can withstand and keep off along 2411, prevent the problem that lance 2 excessively stretches out, and structural reliability is higher.

More specifically, on box body 11 and be located reset chamber 112 and seted up wire hole 1122 on deviating from the lateral wall of control chamber 111 one side, even wire hole 1122 sets up in the tip that box body 11 deviates from one side that contact 21 stretches out, avoided current structure to set up wire hole 1122 in the below of box body 11 or the problem that side need set up sunken groove that pushes away, guaranteed the wholeness of box body 11 outward appearance, aesthetic measure is higher, and processing technology is simpler.

More specifically, one of the two sets of contacts 5 is connected to the safety circuit 6, i.e. only one of the sets of contacts 5 is selected to connect to a safety circuit 6 in the present embodiment. And the first contact 51 and the second contact 52 in the set of contacts 5 are respectively connected with two wires of the safety circuit 6, i.e. the safety circuit 6 is switched on and off by communicating the first contact 51 and the second contact 52 through the contact 25 of the corresponding set. And two wires of the safety circuit 6 extend out of the box body 11 from the wire outlet 1122 of the reset cavity 112 after passing through the partition board 113 from the control cavity 111, and the two wires of the safety circuit 6 pass through the two sides of the electromagnetic assembly 4 respectively, so that enough wiring spaces are reserved in the box body 11 and at the two sides of the electromagnetic assembly 4, the problem that the wiring spaces at the two sides are not enough due to the fact that the fixing structures of the electromagnetic assembly 4 are arranged at the two sides of the electromagnetic assembly 4 is avoided, the structure is more reasonable to set, and the assembly is more facilitated.

More specifically, two terminals 1123 are disposed on the box body 11 and inside the reset cavity 112, the two terminals 1123 are respectively located at two sides of the electromagnetic assembly 4, the two terminals 1123 are respectively connected with two conducting wires of the reset circuit 7, and the two conducting wires of the reset circuit 7 extend out of the box body 11 from the wire outlet 1122, meanwhile, two ends of the coil of the electromagnetic component 4 extending out of the protective shell are respectively connected to the two terminals 1123, at this time, two ends of the coil extending out of the protective shell are respectively connected to the rectifier 8, the rectifier 8 is connected to the terminals 1123 through conducting wires, namely, two ends of the coil of the electromagnetic component 4 are communicated with the external reset circuit 7 through two terminals 1123 arranged in the box body 11, the wiring is convenient, and the problem that the reset circuit 7 pulls the lead of the coil is also avoided, the structure is more reliable, the reset circuit 7 supplies power to the coil, and the ejector rod 41 in the electromagnetic component 4 is driven.

More specifically, be provided with bellied fixture block 114 on the outer wall of box body 11, be provided with the card hole that corresponds with fixture block 114 on the upper cover 12, box body 11 is connected for the joint with upper cover 12, and after the spare part installation in the box body 11 was finished, on locating box body 11 with upper cover 12 lid, only need with fixture block 114 card go into the card downthehole can, made things convenient for the installation of upper cover 12 on box body 11, made things convenient for the assembly equally.

As the preferred embodiment, the shaft sleeve 23 is provided with an embedding hole at one end against which the sleeve 241 abuts, and the embedding hole is coaxially arranged in the center hole of the shaft sleeve 23, so that the end of the sleeve 241 abutting against the shaft sleeve 23 can be inserted into the embedding hole, and the shaft sleeve 23 and the insulating sleeve 24 form a whole, thereby facilitating the subsequent integral installation on the plunger 2 and being more beneficial to the later assembly.

As a preferred embodiment, a rubber ring 9 is arranged in the wire outlet 1122 on the box body 11, and the wires of the safety circuit 6 and the reset circuit 7 both penetrate through the rubber ring 9, i.e., the wires are stabilized, so that the wires are protected, sealing can be realized, water, dust and the like are prevented from entering the box body 11, and the structural design is more reasonable.

The novel travel switch provided by the embodiment comprises a shell 1, a striker 2, a steel wire 3, an electromagnetic assembly 4 and a contact 5; the shaft sleeve 23 with the circle of the flange 231 is sleeved on the impact rod 2, and the steel wire 3 matched with the flange 231 is arranged at the bottom of the shaft sleeve 23, so that the shaft sleeve 23 can be limited by the steel wire 3 when the impact rod 2 drives the shaft sleeve 23 to move, the shaft sleeve 23 arranged on the shaft sleeve 23 in a circle does not need to distinguish directions, any region can be matched with the steel wire 3, the problem that the flange 231 cannot contact the steel wire 3 due to rotation in the using process of the shaft sleeve 23 is avoided, the reliability is higher, the non-directional installation can be realized, and the assembly is more convenient; in addition, a fixing hole 42 is formed in the bottom of the electromagnetic component 4, and a mounting hole 1121 corresponding to the fixing hole 42 is formed in the housing 1 and located below the electromagnetic component 4, so that the fixing structure of the electromagnetic component 4 is hidden below the electromagnetic component 4, the problem that two side spaces are occupied due to the fact that the fixing structure is arranged on two sides of the electromagnetic component 4 is solved, wiring is facilitated, and assembly is facilitated; still directly stretch out the protective housing with the both ends of the wire of electromagnetic component 4's coil outside, avoided the problem that needs the lead wire in addition, the reliability is higher, and it is more convenient to assemble.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims (10)

1. A novel travel switch, comprising:

the box body is arranged in the box body, the upper cover is covered on the box body, a partition board is transversely arranged in an inner cavity of the box body, the partition board divides the inner cavity of the box body into a control cavity and a reset cavity, a connecting hole is formed in the middle of the partition board, and the control cavity is communicated with the reset cavity through the connecting hole;

the spring comprises a spring;

the steel wire is arranged in the control cavity and positioned below the shaft sleeve, and the steel wire is arranged along an axial direction perpendicular to the shaft sleeve;

the electromagnetic assembly is arranged in the reset cavity, the ejector rod of the electromagnetic assembly faces the connecting hole, meanwhile, a fixing hole is formed in the bottom of the electromagnetic assembly, a mounting hole corresponding to the fixing hole is formed in the box body and located below the electromagnetic assembly, the fixing hole is connected with the mounting hole through a screw, and meanwhile, two ends of a lead forming a coil of the electromagnetic assembly directly extend out of the protective shell of the electromagnetic assembly;

the contact is divided into a first contact and a second contact, the first contact and the second contact are arranged in the control cavity and are respectively positioned on two sides of the collision rod, and the first contact and the second contact respectively correspond to two ends of the extended contact sheet.

2. The novel travel switch as claimed in claim 1, wherein there are two sets of the contacts and the contacts, two sets of the contacts are sleeved on the insulating sleeve and are arranged in a front-back spacing manner along the axial direction of the striker, and the spring is arranged between each contact and the insulating sleeve, the spring is located on one side of the contact close to the partition, meanwhile, two sets of the contacts are arranged on the box body, two sets of the contacts are also arranged in a front-back spacing manner along the axial direction of the striker in the control cavity, one set of the contacts corresponds to one set of the contacts, and the first contact and the second contact in one set of the contacts correspond to two ends of the corresponding set of the contacts respectively.

3. The novel travel switch of claim 2, wherein the striker comprises a contact and a rod body, the contact is located at one end of the rod body, the cross section of the contact is larger than that of the rod body, a step is formed at the joint of the contact and the rod body, the shaft sleeve is sleeved outside the rod body, one end of the shaft sleeve abuts against the step, the other end of the rod body is inserted into the connecting hole, meanwhile, a circle of clamping groove is formed in the outer wall of the rod body, which is located at one end of the rod body inserted into the connecting hole, and a clamping spring is clamped in the clamping groove.

4. The novel travel switch of claim 3, wherein the insulating sleeve comprises a sleeve and a blocking ring, the sleeve is sleeved outside the rod body and located on one side of the shaft sleeve, which is far away from the step, one end of the sleeve abuts against one side of the shaft sleeve, which is far away from the step, the blocking ring is sleeved on the other end of the sleeve, one end of the blocking ring abuts against the snap spring, meanwhile, a circle of raised blocking edge is arranged on the outer wall of the sleeve and located in the middle of the sleeve, a group of the contact pieces and a corresponding spring are respectively arranged on the sleeve and located on two sides of the blocking edge, and the two groups of the contact pieces are separated by the blocking edge.

5. The novel travel switch as claimed in claim 4, wherein one set of the contact pieces and the corresponding spring sleeves are arranged outside one end of the sleeve close to the sleeve, the other set of the contact pieces and the corresponding spring sleeves are arranged outside one end of the sleeve provided with the retaining ring, two ends of the spring corresponding to the contact pieces close to the sleeve respectively abut against the contact pieces and the retaining edge, and two ends of the spring corresponding to the other contact piece respectively abut against the contact pieces and the retaining ring.

6. The novel travel switch as claimed in any one of claims 4 or 5, wherein two posts are disposed in the control chamber and on the case, the two posts are disposed between the blocking edge and one of the contact pieces adjacent to the bushing, and the two posts are disposed on two sides of the insulating bushing, and the distance between the two posts is smaller than the diameter of the blocking edge.

7. The novel travel switch as claimed in claim 6, wherein a wire outlet is formed in a side wall of the box body, which is located on a side of the reset chamber away from the control chamber.

8. The novel travel switch of claim 7, wherein one of the two sets of contacts is connected to a safety circuit, the first and second contacts of the set of contacts are respectively connected to two wires of the safety circuit, both wires of the safety circuit extend out of the box body from the wire outlet of the reset cavity after passing through the partition plate from the control cavity, and the two wires of the safety circuit respectively pass through two sides of the electromagnetic assembly.

9. The novel travel switch as claimed in claim 7, wherein two terminals are disposed on the case and in the reset cavity, the two terminals are respectively disposed on two sides of the electromagnetic assembly, the two terminals are respectively connected to two wires of the reset circuit, the two wires of the reset circuit extend out of the case from the wire hole, and two ends of the coil of the electromagnetic assembly, which extend out of the protective case, are respectively connected to the two terminals.

10. The novel travel switch according to claim 1, wherein a protruding fixture block is arranged on the outer wall of the box body, a fixture hole corresponding to the fixture block is arranged on the upper cover, and the box body is connected with the upper cover in a clamping manner.

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