CN211555712U - Travel switch - Google Patents

Abstract

The application provides a travel switch, which relates to the technical field of travel control equipment and comprises a first trigger component and a second trigger component, wherein the first trigger component and the second trigger component respectively comprise a first trigger part and a second trigger part; a moving member which is movable and to which a magnet is mounted; a blocking member having a blocking portion formed thereon; in the first position of the moving member, the magnet is defined by the blocking portion in such a way that the magnetic field of the magnet acting on the first and second triggering portions is blocked, so that the first and second triggering portions are separated from each other; when the moving member moves to the second position and the third position, the first trigger part and the second trigger part of the two trigger members contact each other under the action of the magnetic field of the magnet, respectively. The travel switch realizes effective control of the magnetic field of the magnet, and solves the technical problems that the time for attracting and disconnecting the reeds of the reed pipe is difficult to control, so that the precision of control equipment is reduced and the travel of the magnet is increased.

Description

Travel switch

Technical Field

The application relates to the technical field of stroke control equipment, in particular to a stroke switch.

Background

The reed of the reed pipe is not disconnected at the position where the reed is attracted by the magnet but is disconnected at the position where the magnet is far away from the reed pipe, so that the stroke of the reed pipe is increased and the control precision is reduced.

However, in the prior art, the intensity of the magnetic field generated by the magnet cannot be accurately controlled, so that the time for attracting and disconnecting the reeds of the reed pipe with each other is difficult to control, and the precision of the control equipment is reduced and the stroke of the magnet is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a travel switch, and aims to solve the technical problems that in a reed switch in the prior art, the magnetic field intensity generated by a magnet cannot be accurately controlled, so that the suction and disconnection timings of reeds of the reed switch are difficult to control, which results in the decrease of the precision and the increase of the travel of a control device.

The present application provides a travel switch including a first trigger member and a second trigger member each including a first trigger portion and a second trigger portion that are separated from each other;

under the action of a magnetic field, the first trigger part and the second trigger part can contact with each other; the travel switch further includes:

a moving member which is movable and to which a magnet is mounted;

a blocking member having a blocking portion formed thereon;

in a first position of the moving member, the magnet is defined by the blocking portion in such a way that the magnetic field of the magnet acting on the first and second trigger portions is blocked, so that the first and second trigger portions are separated from each other;

when the moving member moves to a second position, the first trigger part and the second trigger part of the first trigger member contact each other under the action of the magnetic field of the magnet;

when the moving member moves to a third position, the first trigger part and the second trigger part of the second trigger member contact each other under the action of the magnetic field of the magnet.

Preferably, the travel switch includes:

a first mounting member to which the first trigger member is mounted;

a second mounting member facing the first mounting member, the second trigger member being mounted to the second mounting member;

defining a surface of the first mounting member facing the second mounting member as a first trigger surface and a surface of the second mounting member facing the first mounting member as a second trigger surface;

the blocking member is mounted such that the blocking portion is located between the first and second trigger surfaces.

Preferably, the blocking portion is formed as a blocking through-hole, the magnet being located inside the blocking through-hole in the first position of the moving member; at least part of the magnet is located outside the blocking through hole in the second position and the third position of the moving member;

the moving direction of the moving component is perpendicular to the first trigger surface, and hole portions corresponding to the blocking through holes and allowing the moving component to penetrate through are formed in the first mounting component and the second mounting component.

Preferably, the travel switch further comprises:

a third magnetically permeable member covering a side portion of the blocking member facing the first trigger surface, the third magnetically permeable member being connected to the first mounting member;

a fourth magnetic conductive member covering a side portion of the blocking member facing the second trigger surface, the fourth magnetic conductive member being connected to the second mounting member;

the third magnetic conduction component and the fourth magnetic conduction component correspond to the blocking through hole and are provided with hole parts through which the motion component penetrates;

when viewed along the direction of motion of the motion member:

the third magnetically permeable member overlaps the first trigger member and a portion of the fourth magnetically permeable member overlaps the second trigger member.

Preferably, the travel switch further comprises:

a first magnetically permeable member covering a side of the magnet facing the first trigger surface;

a second magnetically permeable member covering a side of the magnet facing the second trigger surface;

the sum of the sizes of the third magnetic conductive member, the blocking member and the fourth magnetic conductive member in the moving direction of the moving member is greater than or equal to the sum of the sizes of the first magnetic conductive member, the magnet and the second magnetic conductive member in the moving direction of the moving member.

Preferably, the third magnetically permeable member, the fourth magnetically permeable member and the blocking member are integrally formed; or

The third magnetic conductive member, the fourth magnetic conductive member and the blocking member are assembled to form a whole.

In a second aspect, the present application provides a travel switch comprising a first trigger member comprising first and second trigger portions spaced from one another; under the action of a magnetic field, the first trigger part can be contacted with the second trigger part; the travel switch further includes:

a moving member which is movable and to which a magnet is mounted;

a blocking member having a blocking portion formed thereon;

in the first position of the moving member, the magnet is defined by the blocking portion in such a way that the magnetic field of the magnet acting on the first trigger member is blocked, so that the first and second trigger portions are separated from each other;

when the moving member moves to the second position, the first trigger member brings the first trigger part into contact with the second trigger part under the action of the magnetic field of the magnet.

Preferably, the travel switch further comprises:

a first mounting member to which the first trigger member is mounted;

the blocking member and the first mounting member face each other, and a plane on which a surface of the first mounting member facing the blocking member is located is defined as a first trigger surface.

Preferably, the blocking portion is formed as a blocking through hole, and in the first position of the moving member, the magnet is located inside the blocking through hole, and in the second position of the moving member, at least a part of the magnet is located outside the blocking through hole;

the moving direction of the moving component is perpendicular to the first triggering surface, and the first mounting component is provided with a hole part which corresponds to the blocking through hole and is penetrated by the moving component.

Preferably, the travel switch further comprises:

the third magnetic conduction component covers the side part, facing the first trigger surface, of the blocking component, is connected with the first mounting component, and is provided with a hole part corresponding to the blocking through hole and used for the movement component to penetrate through; a first magnetically permeable member covering a side of the magnet facing the first trigger surface.

A portion of the third magnetically permeable member overlaps the first trigger member when viewed in a direction perpendicular to the first trigger surface;

the third magnetic conduction component and the blocking component are integrally formed; or both the third magnetically permeable member and the blocking member are assembled to form a unitary body.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

The utility model provides a travel switch, in the first position of motion component, the magnetic body is injectd through the separation part of separation component, make two trigger parts part separately each other, in the second position of motion component, two trigger parts of first trigger component contact each other under the magnetic field effect of magnetic body, in the third position of motion component, two trigger parts of second trigger component contact each other under the magnetic field effect of magnetic body, thereby realized the effective control to the magnetic field of magnet, thereby solve the tongue tube among the prior art to a certain extent, the unable accurate control of magnetic field intensity that the magnet produced, make the reed of tongue tube attract each other with the disconnection opportunity difficult to control, lead to the technical problem of the precision decline of controlgear and the stroke increase of magnet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic view of a first embodiment of the travel switch of the present application;

fig. 2 shows a further schematic view of the first embodiment of the travel switch according to the present application.

Reference numerals:

100-a first trigger member; 200-a second trigger member; 1-a first reed; 2-a second reed; 3-a feedback rod; 4-a magnet; 5-a barrier ring; 6-a first magnetic conduction pad; 7-a second magnetically conducting pad; 8-a first magnetic conductive plate; 9-a second magnetic conduction plate; 10-a first mount; 10 a-a first trigger surface; 11-a second mount; 11 a-a second trigger surface; h-magnetic component thickness; h-reluctance thickness.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

FIG. 1 shows a schematic view of a first embodiment of the travel switch of the present application; fig. 2 shows a further schematic view of the first embodiment of the travel switch according to the present application.

Referring to fig. 1 and 2, a first embodiment of a travel switch provided herein includes a first trigger member, a second trigger member, a moving member, a magnet, a blocking member, a first magnetically permeable member, a second magnetically permeable member, a third magnetically permeable member, a fourth magnetically permeable member, a first mount, and a second mount. The connection relationship and the operation principle of the above components will be described in detail below.

In an embodiment, the first and second trigger members 100 and 200 each comprise a first and second trigger part, which may be a first and second spring leaf 1 and 2, respectively. Taking the first spring 1 as an example, the first spring 1 can be made of a magnetizable metal material and has elasticity, so that the first spring 1 can bend under the action of a magnetic field with certain intensity. Similarly, the second leaf spring 2 can have the same properties as the first leaf spring 1, and will not be described in detail herein. In an embodiment, as shown in fig. 1 and 2, taking as an example the first reed 1 and the second reed 2 of the first trigger member 100, the first end of the first reed 1 and the first end of the second reed 2 may be connected via an intervening part so that they are brought into a state of being separated from each other, the intervening part being formed of an insulating material, the purpose of which will be described later. A first trigger member 100 including the first reed 1, the second reed 2, and the intervening part may be inserted into the first mount 10 such that a portion of the first reed 1 exposed to an outer side part of the first mount 10 and a portion of the second reed 2 exposed to an outer side part of the first mount 10 face each other.

Thus, due to the above-mentioned properties of the first spring 1 and the second spring 2, when the first spring 1 and the second spring 2 are acted by a magnetic field, the two springs are magnetized to bend towards each other and further attract and contact, so that the two circuits are conducted under the condition that the first spring 1 and the second spring 2 are respectively and electrically connected to the circuit, and conversely, when the magnetic field intensity applied to the first spring 1 and the second spring 2 is insufficient, the two springs are reset to be separated from each other so as to disconnect the two circuits. That is, the intermediate portion is formed of an insulating material in order to prevent the first spring plate 1 and the second spring plate 2 from being separated from each other and thus electrically connecting the circuits electrically connected to each other.

To facilitate the description of the positions of the components described below, referring to the orientation shown in fig. 1, the lower surface of first mounting seat 10 may be defined as first trigger surface 10a, and the upper surface of second mounting seat 11 may be defined as second trigger surface 11 a. The first and second mounting seats 10 and 11 may be mounted facing each other so that the first and second triggering surfaces 10a and 11a are parallel. Furthermore, the first spring 1 and the second spring 2 shown in fig. 1 may both be parallel to the first activation surface 10 a. The description of the component positions will be further made below in the orientation shown in fig. 1.

In an embodiment, a third magnetically permeable member may be mounted to the first activation surface 10a and a fourth magnetically permeable member may be mounted to the second activation surface 11 a. In an embodiment, the third magnetic conductive member may be a first magnetic conductive plate 8, the fourth magnetic conductive member may be a second magnetic conductive plate 9, both the first magnetic conductive plate 8 and the second magnetic conductive plate 9 are formed of a magnetic conductive material, and two surfaces facing each other may be parallel. As shown in fig. 1, the parts of the first and second magnetic conductive plates 8 and 9 extend into the space between the first and second triggering members, and the purpose of the parts is to transmit the action of the magnetic field of the magnet to the first and second reeds 1 and 2 of the first triggering member 100 via the first magnetic conductive plate 8 and to the first and second reeds 1 and 2 of the second triggering member 200 via the second magnetic conductive plate 9, so as to compensate the magnetic field action reduced by the distance between the magnet and the first and second reeds 1 and 2, and ensure accurate triggering of the triggering member.

In an embodiment, a blocking member, which may be a blocking ring 5, may be mounted between the first and second trigger surfaces 10a, 11 a. The blocking ring 5 is formed with a blocking portion by which a magnet mounted to the moving member can be defined, which will be described in detail below.

Above-mentioned separation portion can be the separation through-hole, and the separation through-hole can run through separation portion along vertical direction, and the cross section of separation through-hole can be circular, and the separation through-hole forms into columniform shape promptly. In an embodiment, the first magnetic conductive plate 8 and the second magnetic conductive plate 9 may be formed with hole portions having a size greater than or equal to an inner diameter of the blocking through hole, and the first mounting seat 10 and the second mounting seat 11 may also be formed with hole portions having a size greater than or equal to an inner diameter of the blocking through hole, so that both ends of the blocking through hole are communicated with an external environment in a state where the blocking ring 5 is mounted between the first magnetic conductive plate 8 and the second magnetic conductive plate 9.

In an embodiment, the moving member may be the feedback rod 3, and the feedback rod 3 may be formed as a rod member having a cylindrical shape, and an outer diameter thereof may be slightly smaller than an inner diameter of the blocking through hole. One end (hereinafter referred to as a magnet end) of the feedback rod 3 may be formed with a cavity that can be sealed, the magnet 4 may be mounted in the cavity, and the magnet 4 may be preferentially a permanent magnet.

In an embodiment, the barrier ring 5 may be formed of a magnetically permeable material. When the magnet end of the feedback rod 3 is located in the blocking through hole (i.e. the first position of the feedback rod 3), and the magnet 4 can be completely accommodated in the blocking through hole, the magnetic field of the magnet 4 forms a magnetic field loop via the blocking ring 5, so that the magnetic field is equivalent to being blocked by the blocking ring 5, and does not act on any set of the first spring plate 1 and the second spring plate 2. When the magnet end of the feedback rod 3 moves towards the outside of the blocking through hole (i.e. moves downwards or upwards), the magnet gradually moves out of the blocking through hole, and when part of the magnet is located outside the blocking through hole (i.e. the second position and the third position of the feedback rod 3, the feedback rod 3 has a second position reached by moving upwards and a third position reached by moving downwards relative to the blocking ring 5), taking the second position as an example, the magnetic field of the magnet acts on the first spring 1 and the second spring 2 of the first triggering member 100 by being transmitted through the first magnetic conductive plate 8, so that the first spring 1 and the second spring 2 are attracted together by magnetic force, and similarly, the situation when the feedback rod 3 is in the third position is also similar. The blocking through hole is positioned between the first trigger surface 10a and the second trigger surface 11a, and the contrast of the up-down stroke of the feedback rod 3 is stronger due to the installation of the clamping mode, so that the checking of the stroke when the precision is failed is facilitated. In an embodiment, the feedback rod 3 may be mounted on a moving mechanism, the moving mechanism may have a moving direction same as an axial direction of the feedback rod 3 (i.e., an axial direction of the blocking through hole), and the moving mechanism drives the feedback rod 3 to move, so that the travel switch completes the above-mentioned on-off process.

In an embodiment, the upper side and the lower side of the magnet 4 located in the cavity of the feedback rod 3 may be further covered with a first magnetic conductive pad 6 and a second magnetic conductive pad 7, respectively, and the first magnetic conductive pad 6 and the second magnetic conductive pad 7 may both be formed of a magnetic conductive material. When the magnet is accommodated in the blocking through hole of the blocking ring 5, the first magnetic conduction pad 6 and the second magnetic conduction pad 7 can be accommodated in the blocking through hole and participate in the conduction of the magnetic field loop, and the magnetic field of the magnet 4 is further prevented from being applied to the outer side of the blocking ring 5. In the embodiment, as described above, the distance of the feedback lever 3 moved from the first position to the second position (third position) may be understood as the stroke of the stroke switch. Under the condition that the first magnetic guide pad 6 and the second magnetic guide pad 7 are not arranged, the blocking ring 5 is possibly insufficient in blocking a magnetic field, so that the first reed 1 and the second reed 2 can still be attracted under the action of the magnetic field when in the first position, therefore, the arrangement of the first magnetic guide pad 6 and the second magnetic guide pad 7 increases the control precision of the travel switch, and the working reliability of the travel switch is ensured.

It should be noted that, when the feedback rod 3 is located at the first position in the present embodiment, the first spring plate 1 and the second spring plate 2 are not affected by the magnetic field of the magnet 4 at all, or the blocked magnetic field of the first spring plate 1 and the second spring plate 2 is not enough to attract the first spring plate 1 and the second spring plate 2 to each other.

In an embodiment, fig. 1 and 2 show one way of movement of the feedback rod 3, which has been described in detail in the above description. In this movement mode, the movement direction of the feedback rod 3 can be perpendicular to the first triggering surface 10a (and of course perpendicular to the second triggering surface 11a, the first magnetic conductive plate 8 and the second magnetic conductive plate 9), which is beneficial to design the stroke of the feedback rod 3 according to actual needs, so as to standardize the design.

In an embodiment, the sum of the sizes of the first magnetic conductive pad 6, the magnet 4, and the second magnetic conductive pad 7 in the moving direction of the feedback rod 3 (i.e., the distance between the upper end surface of the first magnetic conductive pad 6 and the lower end surface of the second magnetic conductive pad 7 in fig. 1 and 2) may be defined as a magnetic assembly thickness H, and the sizes of the first magnetic conductive plate 8, the blocking ring 5, and the second magnetic conductive plate 9 in the moving direction of the feedback rod 3 (i.e., the distance between the first trigger surface 10a and the second trigger surface 11a in fig. 1 and 2) may be defined as a magnetic blocking thickness H. In an embodiment, the magnetic blocking thickness H may be greater than or equal to the magnetic assembly thickness H to effectively block the magnetic field of the magnet 4, and at the same time, the stroke of the feedback rod 3 may be adjusted for the magnetic blocking thickness H.

That is, when the feedback rod 3 is located at the first position, the portions of the first magnetic conductive plate 8 and the second magnetic conductive plate 9, which are attached to the blocking ring 5, are allowed to participate in blocking magnetism of the magnet 4, that is, the first magnetic conductive plate 8 and the second magnetic conductive plate 9 have two functions: the magnetic field is transferred to the two reeds belonging to the same trigger component and the magnetic resistance effect is achieved when the feedback rod 3 is located at the first position, the first magnetic conduction plate 8 and the second magnetic conduction plate 9 are further beneficial to improving the precision of the travel switch, and the on (the two reeds of one trigger component attract) and the off (the two reeds of one trigger component are separated) of the travel switch are more sensitive. In this case, it will be appreciated that in the first position of the feedback rod 3, it is also possible that part of the magnet 4 is accommodated in the blocking portion, for example the lower end surface of the magnet 4 extends beyond the lower end of the blocking through hole, but still above the second activation surface 11 a. It will also be appreciated that, where the above relationship between the reluctance thickness H and the magnet assembly thickness H is satisfied, it is not particularly limited whether the magnet and the magnetically conductive pad mounted to the magnet are completely received in the blocking through-hole when the first leaf spring 1 and the second leaf spring 2 are caused to separate from each other in the first position of the feedback rod 3, whereas it is not particularly limited whether the magnet and the magnetically conductive pad mounted to the magnet 4 are completely removed from the blocking through-hole when the first leaf spring 1 and the second leaf spring 2 are caused to attract each other in the second position of the feedback rod 3.

Advantageously, the shorter the distance the first magnetically conductive pad 6 passes through the first trigger surface 10a, the more the two leaves of the first trigger member 100 engage, the more the travel switch can accommodate the small travel scenario, and the more precise the control can be accomplished, as is the case for the second magnetically conductive pad 7.

Still taking the first position and the second position of the feedback rod 3 in the first embodiment as an example to continue the description, in the embodiment, the adjustment of the magnetic blocking thickness H may mainly be to adjust the depth of the blocking through hole, and the stroke of the feedback rod 3 may be adjusted relatively simply by replacing different blocking portions.

In addition, the travel switch provided by the present application further includes a second embodiment (not shown in the drawings), which will be described below. The second embodiment differs from the first embodiment in that the second embodiment is a single position travel switch. The circuit comprises only one first trigger component, and the circuit is conducted by the attraction of the first reed and the second reed which are deformed under the action of a magnetic field. Therefore, in the embodiment, a first mounting seat and a first magnetic conduction plate mounted on the mounting seat are correspondingly provided.

In this embodiment, the manner of mounting the first spring on the first mounting seat may be the same as that in the first embodiment, and the definition of the first trigger plane is also the same, which is not described herein again. The first magnetic conductive plate may be mounted on the first trigger plane, that is, the lower end surface of the first mounting seat, and the mounting manner of the first magnetic conductive plate may also be the same as that in the first embodiment. In this embodiment, the travel switch may include only the first magnetic conductive pad, and the first magnetic conductive pad may be disposed on the upper end surface of the magnet. That is, in the present embodiment, the blocking ring, the first magnetic conductive pad and the first magnetic conductive plate only need to block the magnetic field of the magnet toward the first trigger member side together (for example, when the moving direction of the feedback rod is perpendicular to the first trigger surface). In addition, in the second embodiment, the above description still applies to the magnet and the accommodation relationship between the magnetic conductive pad mounted on the magnet and the blocking portion.

In accordance with the above-described features, some manufacturing processes and usage scenarios of the travel switch will be described in detail below. Taking the first embodiment of the travel switch as an example, in the embodiment, the first magnetic conduction pad 6 and the second magnetic conduction pad 7 can be mounted on the magnet 4 by a fastener such as a screw, or can be mounted by rolling, and the blocking ring 5, the first magnetic conduction plate 8, and the second magnetic conduction plate 9 can also be formed into a whole in the above manner, in this case, the case is suitable for the occasion that the travel needs to be changed frequently, and the detachable connection can give more adjustment space for technicians. Or, the blocking ring 5, the first magnetic conduction plate 8 and the second magnetic conduction plate 9 can be formed into an integrally formed structure, so that the magnetic-field-limiting device is suitable for occasions with relatively fixed requirements on the stroke, and the assembly time is shortened. Similarly, the manufacturing process of the blocking ring and the first magnetic conductive plate in the second embodiment may also be integrally formed or separately assembled like the above, and the beneficial effects are the same, and are not described herein again.

Aiming at a use scene, a holding area (a magnet 4 is positioned in the area, and two reeds are not attracted enough) of a magnetic induction travel switch in the prior art is beyond an induction area (the two reeds are attracted when the magnet 4 is positioned in the area), the range of the holding area is usually 3mm to 8mm, so that the normal on-off of a circuit can be controlled only by increasing the travel of the magnet 4, and the magnetic induction travel switch cannot be applied to a small-travel scene. In addition, when the travel switch is faced with severe environments such as high temperature, high pressure, irradiation and the like, the environments need to be isolated from the components of the travel switch to form a shielding structure, and the shielding structure usually needs to be debugged for many times after the travel switch is installed due to the invisible magnet 4, so that the labor and material cost is wasted, and the potential safety hazard is increased.

The travel switch provided by the embodiment is actually equivalent to realize the sudden enhancement and disappearance of the magnetic field around the reed, so that the holding area is positioned in the sensing area, the travel required by the feedback rod 3 is effectively reduced, and the travel switch can be suitable for small-travel application scenes and simultaneously makes it possible to adopt a magnet with higher magnetic field strength. In addition, because it is comparatively accurate, need not adjust after the installation, saved time and cost, through adopting the magnetic material of high magnetic conductivity and the magnet 4 of adaptation, the stroke of travel switch in this embodiment can be controlled in the scope of being less than or equal to 1 mm.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all changes that can be made in the details of the description and drawings, or directly/indirectly implemented in other related technical fields, are intended to be embraced therein without departing from the spirit of the present application.

Claims (10)

1. A travel switch comprising a first trigger member and a second trigger member, each comprising first and second trigger portions that are separate from one another;

under the action of a magnetic field, the first trigger part and the second trigger part can contact with each other; characterized in that, travel switch still includes:

a moving member which is movable and to which a magnet is mounted;

a blocking member having a blocking portion formed thereon;

in a first position of the moving member, the magnet is defined by the blocking portion in such a way that the magnetic field of the magnet acting on the first and second trigger portions is blocked, so that the first and second trigger portions are separated from each other;

when the moving member moves to a second position, the first trigger part and the second trigger part of the first trigger member contact each other under the action of the magnetic field of the magnet;

when the moving member moves to a third position, the first trigger part and the second trigger part of the second trigger member contact each other under the action of the magnetic field of the magnet.

2. The travel switch of claim 1, wherein the travel switch comprises:

a first mounting member to which the first trigger member is mounted;

a second mounting member facing the first mounting member, the second trigger member being mounted to the second mounting member;

defining a surface of the first mounting member facing the second mounting member as a first trigger surface and a surface of the second mounting member facing the first mounting member as a second trigger surface;

the blocking member is mounted such that the blocking portion is located between the first and second trigger surfaces.

3. The travel switch of claim 2,

the blocking portion is formed as a blocking through hole, and the magnet is located inside the blocking through hole in the first position of the moving member; at least part of the magnet is located outside the blocking through hole in the second position and the third position of the moving member;

the moving direction of the moving component is perpendicular to the first trigger surface, and hole portions corresponding to the blocking through holes and allowing the moving component to penetrate through are formed in the first mounting component and the second mounting component.

4. The travel switch of claim 3, further comprising:

a third magnetically permeable member covering a side portion of the blocking member facing the first trigger surface, the third magnetically permeable member being connected to the first mounting member;

a fourth magnetic conductive member covering a side portion of the blocking member facing the second trigger surface, the fourth magnetic conductive member being connected to the second mounting member;

the third magnetic conduction component and the fourth magnetic conduction component correspond to the blocking through hole and are provided with hole parts through which the motion component penetrates;

when viewed along the direction of motion of the motion member:

the third magnetically permeable member overlaps the first trigger member and a portion of the fourth magnetically permeable member overlaps the second trigger member.

5. The travel switch of claim 4, further comprising:

a first magnetically permeable member covering a side of the magnet facing the first trigger surface;

a second magnetically permeable member covering a side of the magnet facing the second trigger surface;

the sum of the sizes of the third magnetic conductive member, the blocking member and the fourth magnetic conductive member in the moving direction of the moving member is greater than or equal to the sum of the sizes of the first magnetic conductive member, the magnet and the second magnetic conductive member in the moving direction of the moving member.

6. The travel switch of claim 5,

the third magnetic conductive member, the fourth magnetic conductive member and the blocking member are integrally formed; or

The third magnetic conductive member, the fourth magnetic conductive member and the blocking member are assembled to form a whole.

7. A travel switch comprising a first trigger member comprising first and second trigger portions that are separate from one another; under the action of a magnetic field, the first trigger part can be contacted with the second trigger part; characterized in that, travel switch still includes:

a moving member which is movable and to which a magnet is mounted;

a blocking member having a blocking portion formed thereon;

in the first position of the moving member, the magnet is defined by the blocking portion in such a way that the magnetic field of the magnet acting on the first trigger member is blocked, so that the first and second trigger portions are separated from each other;

when the moving member moves to the second position, the first trigger member brings the first trigger part into contact with the second trigger part under the action of the magnetic field of the magnet.

8. The travel switch of claim 7, further comprising:

a first mounting member to which the first trigger member is mounted;

the blocking member and the first mounting member face each other, and a plane on which a surface of the first mounting member facing the blocking member is located is defined as a first trigger surface.

9. The travel switch of claim 8,

the blocking portion is formed as a blocking through hole, and in the first position of the moving member, the magnet is located inside the blocking through hole, and in the second position of the moving member, at least a part of the magnet is located outside the blocking through hole;

the moving direction of the moving component is perpendicular to the first triggering surface, and the first mounting component is provided with a hole part which corresponds to the blocking through hole and is penetrated by the moving component.

10. The travel switch of claim 9, further comprising:

the third magnetic conduction component covers the side part, facing the first trigger surface, of the blocking component, is connected with the first mounting component, and is provided with a hole part corresponding to the blocking through hole and used for the movement component to penetrate through; a first magnetically permeable member covering a side of the magnet facing the first trigger surface;

a portion of the third magnetically permeable member overlaps the first trigger member when viewed in a direction perpendicular to the first trigger surface;

the third magnetic conduction component and the blocking component are integrally formed; or both the third magnetically permeable member and the blocking member are assembled to form a unitary body.

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