Travel switch assembly and travel switch

Abstract

The utility model relates to a button switch in which a contact recovers to an initial state after an operating force is eliminated, and especially relates to a travel switch assembly and a travel switch. According to the brand new travel switch provided by the utility model, reliable contact and separation between the short-circuit piece and the wiring terminals are realized through guiding cooperation of the feeler lever and the switch main body, and the short-circuit piece and the paired wiring terminals of the travel switch are all arranged beside the feeler lever. The short-circuit piece and the wiring terminal which are oppositely arranged in the front-back direction utilize the space beside the feeler lever, so that the space occupied by the travel switch in the front-back direction is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the button switch of contact point restores initial state when operating force eliminates, especially travel switch assembly and travel switch. BACKGROUND

[0002] At present, connectors capable of self-detecting plugging state are needed in many use occasions. In the implementation of the plugging self-detection function of the connector, the existing method is often to integrate a travel switch assembly in the interior of the socket. For example, a socket and an industrial connector disclosed in the Chinese Utility Model Patent with the authorized announcement number CN214280355U has a guide rod movably installed in the interior main body (i.e. the shell interior installed insulator and the plug-in piece installed in the insulator) of the socket in the plug-in direction. A travel switch is arranged on the rear side of the interior main body in the socket shell. The front end of the guide rod is a free end, and the rear end cooperates with the contact of the travel switch. When the plug is inserted into the socket, the guide rod retreats under the thrust of the plug and touches the travel switch, thereby obtaining the state information of the plug and socket insertion. In some use occasions, the axial size of the connector, i.e. the plug-in size, is required to be as small as possible. In this case, in addition to shortening the axial length of the interior main body of the connector as much as possible, whether the axial length of the travel switch can be shortened is also very crucial.

[0003] As a relatively mature electrical element, the technical principle of the travel switch is relatively simple, and the structural forms are different. For example, a waterproof sealed travel switch disclosed in the Chinese Utility Model Patent with the authorized announcement number CN218730503U and a sealed travel switch for underwater use disclosed in the Chinese Invention Patent with the application publication number CN118588476A. However, the contact rod and the switch body of these travel switches are arranged in the front-rear direction, i.e. the reciprocating movement direction of the contact rod. This results in a larger size of the travel switch in the front-rear direction. For the connector applied to the aircraft, the size requirement is relatively strict. Therefore, these travel switches cannot meet the size requirement. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a travel switch to solve the problem of the larger size of the existing travel switch in the front-rear direction. At the same time, the utility model also aims at providing a travel switch assembly which can be used in the plugging self-detection connector to minimize the space occupied by it in the plug-in direction of the connector.

[0005] The travel switch comprises a switch main body, a touch rod is guided and installed on the switch main body, a short-circuiting piece is fixedly arranged on the touch rod, the short-circuiting piece is beside the touch rod, a pair of terminal clamps are arranged on the switch main body at positions corresponding to the front and back of the short-circuiting piece, the touch rod has a short-circuiting state in which the short-circuiting piece and the terminal clamps simultaneously contact and a breaking state in which the short-circuiting piece and the terminal clamps simultaneously separate in front and back moving strokes.

[0006] Further, the terminal clamp has a pinhole plug-in structure extending front and back, the short-circuiting piece is a U-shaped structure, and the U-shaped opening of the U-shaped short-circuiting piece faces the direction in which the terminal clamp is located; the two parallel edges of the U-shaped short-circuiting piece are pinhole matching structures matched with the pinhole plug-in structure.

[0007] Further, the switch main body comprises a plate-shaped base, a guide seat extending forward is arranged on the plate-shaped base, the touch rod is guided and arranged in the guide seat, a terminal clamp fixing structure is arranged on the plate-shaped base beside the guide seat, the terminal clamp is fixed on the plate-shaped base through the terminal clamp fixing structure, a plate-shaped trigger end is fixed on the front side of the plate-shaped base on the touch rod, the plate-shaped trigger end has an extension part extending perpendicularly to the axis of the touch rod, and the U-shaped short-circuiting piece is fixed on the extension part.

[0008] Further, the terminal clamp has a terminal clamp exposed from the back side of the plate-shaped base.

[0009] Further, the back end of the terminal clamp has an extension section extending away from the side where the touch rod is located, and the extension section constitutes the terminal clamp.

[0010] Further, a reset compression spring is sleeved on the touch rod between the plate-shaped base and the plate-shaped trigger end to keep the short-circuiting piece and the terminal clamp in the breaking state in a natural state.

[0011] Further, the terminal clamp fixing structure comprises a terminal clamp wrapping section extending forward from the plate-shaped base, the pinhole plug-in structure is in the terminal clamp wrapping section, and the terminal clamp wrapping section has a guide hole in front of the pinhole plug-in structure to guide the pinhole matching structure and the pinhole plug-in structure to be plugged in.

[0012] Further, in the natural state, the pinhole matching structure is in the guide hole.

[0013] The utility model provides a kind of brand-new travel switch, reliable contact and disengagement between short-circuiting piece and terminal clamp are realized by the guiding cooperation of touch rod and switch main body, and the short-circuiting piece and the pair of terminal clamps of this travel switch are all arranged in the side of touch rod, so the space of the side of touch rod is utilized by the short-circuiting piece and the terminal clamp relatively arranged in front and back, so the space occupied by travel switch in front and back direction is shortened.

[0014] The utility model discloses a travel switch assembly, which comprises a driving component and a travel switch arranged at the rear side of the driving component.

[0015] Further, the wiring terminal has a needle hole plug-in structure extending front and back, the short-circuiting piece is a U-shaped structure, and the U-shaped opening of the U-shaped short-circuiting piece faces the direction where the wiring terminal is located, and the two parallel edges of the U-shaped short-circuiting piece are respectively needle hole matching structures matched with the needle hole plug-in structure.

[0016] Further, the switch main body comprises a plate-shaped base, the plate-shaped base is provided with a guide seat extending forward, the touch rod is guided and arranged in the guide seat, the plate-shaped base is provided with a terminal fixing structure on the side of the guide seat, the wiring terminal is fixed on the plate-shaped base through the terminal fixing structure, the plate-shaped touch trigger end is fixed on the front side of the plate-shaped base, the plate-shaped touch trigger end has an extension part extending perpendicularly to the axis of the touch rod, and the U-shaped short-circuiting piece is fixed on the extension part.

[0017] Further, the wiring terminal has a wiring terminal exposed from the rear side of the plate-shaped base.

[0018] Further, the rear end of the wiring terminal has an extension section extending away from the side where the touch rod is located, and the extension section constitutes the wiring terminal.

[0019] Further, the reset compression spring is sleeved on the touch rod between the plate-shaped base and the plate-shaped touch trigger end, so that the short-circuiting piece and the wiring terminal are kept in the open state in the natural state.

[0020] Further, the terminal fixing structure comprises a terminal wrapping section extending forward from the plate-shaped base, the needle hole plug-in structure is arranged in the terminal wrapping section, and the terminal wrapping section is provided with a guide hole in front of the needle hole plug-in structure, so as to guide the needle hole matching structure to be plugged into the needle hole plug-in structure.

[0021] Further, in the natural state, the needle hole matching structure is arranged in the guide hole.

[0022] Further, the driving component is a driven ring body, and the front end of the touch rod is directly or indirectly connected to the driven ring body.

[0023] Further, the travel switch connected to the rear side of the driving component is more than two.

[0024] Further, the driven ring body comprises a connecting ring body and a rotating ring body, the rotating ring body is arranged on the front side of the connecting ring body and rotates around its axis, and the connecting ring body is directly or indirectly connected with the touch rod.

[0025] Further, the driven ring body comprises a thrust bearing, two thrust washers of the thrust bearing, one on the front side and the other on the rear side, constitute the rotating ring body and the connecting ring body respectively, and the driven ring body further comprises a retaining member for retaining a certain front-rear distance between the two thrust washers.

[0026] Further, the connecting ring body is connected with the touch rod through a mounting rod, the connecting ring body is provided with a radial screw hole and a connecting hole extending from the screw hole to the rear end face of the connecting ring body, the front end of the mounting rod extends into the screw hole from the connecting hole, a locking nut is connected to the end of the mounting rod extending into the screw hole, and the front end of the touch rod is connected with the rear end of the mounting rod.

[0027] The utility model discloses a kind of travel switch assemblies, especially applicable to connector needing to realize plug-in detection, the travel switch used in travel switch assembly, reliable contact and disengagement between short-circuiting piece and terminal are realized by touch rod and switch body guiding cooperation, and the short-circuiting piece of the travel switch and the pair of terminal are all arranged in the side of touch rod, so that the space of the side of touch rod is utilized by the short-circuiting piece and terminal relatively arranged in front and back, so as to shorten the space occupied in front and back direction by travel switch, to reduce the space of connector occupied when being used in plug-in detection connector, reduce the size of connector in plug-in direction. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the schematic diagram of plug-in detection connector comprising the travel switch assembly of the utility model;

[0029] Figure 2 It is Figure 1 It is the structural schematic diagram of rear side view angle of the connector shown;

[0030] Figure 3 It is the structural schematic diagram of how the travel switch assembly of the utility model is installed in the main shell of connector after the connecting flange and tail shell part of hidden connector;

[0031] Figure 4 It is the structural schematic diagram of the travel switch assembly of the utility model;

[0032] Figure 5 It is the structural schematic diagram when mounting rod is connected on the touch rod of travel switch;

[0033] Figure 6 It is the structural schematic diagram of the travel switch of the utility model;

[0034] Figure 7 is a perspective view of the travel switch from another viewing angle of the utility model;

[0035] Figure 8 is a perspective view of the travel switch from another viewing angle of the utility model;

[0036] Figure 9 is a sectional view of the drive component and the mounting rod. Figure 6 is a sectional view of the drive component and the mounting rod.

[0037] Figure 10 is a sectional view of the drive component and the mounting rod. Figure 6 is a sectional view of the drive component and the mounting rod.

[0038] Figure 11 is a sectional view of the drive component and the mounting rod.

[0039] In the figure: 1, internal main body; 2, connector housing; 20, main housing; 3, drive component; 30, driven ring body; 31, mounting rod; 32, reset compression spring; 33, locking nut; 301, connecting ring body; 302, rotary ring body; 303, retaining member; 310, outer flange; 311, plate-shaped trigger end; 312, short-circuiting member mounting cavity; 313, insulating pressing plate; 34, touch rod; 4, travel switch; 400, fixed seat; 401, plate-shaped base; 402, terminal wrapping section; 4020, guide hole; 403, guide seat; 411, insertion hole; 412, wiring terminal; 90, tail housing component; 43, short-circuiting member. DETAILED DESCRIPTION

[0040] The features and performance of the utility model are described in further detail below in conjunction with embodiments.

[0041] The travel switch of the utility model is directed to the problem that in the existing direct-acting travel switch, the touch rod and the switch main body are arranged side by side in the front-rear direction (i.e. the reciprocating movement direction of the touch rod), resulting in a relatively large space occupied by the travel switch in the front-rear direction. By adjusting the positional relationship of the touch rod and the switch main body, the switch main body and the touch rod share the space in the front-rear direction, thereby reducing the space occupied by the travel switch in the front-rear direction.

[0042] The utility model is proposed in view of how to reduce the axial dimension of the travel switch when the travel switch is used in a plug-in self-test connector. In order to clearly describe the travel switch and the travel switch assembly of the utility model, the following describes an example of the travel switch assembly in the state of being applied to a plug-in self-test connector.

[0043] One embodiment of the travel switch assembly when used in a plug-in self-test connector is as follows: Figures 1-3As shown, the plug-in detection connector comprises a connector housing 2 and an inner body 1, the connector housing 2 comprises a shell and a tail shell part 90 connected at the rear side of the shell, the shell comprises a ring-shaped main shell 20 surrounding the outer side of the inner body 1, the inner ring hole of the ring-shaped main shell constitutes a body assembly hole for mounting the inner body, the main shell 20 has a locking sleeve extending forward at the periphery of the body assembly hole for thread cooperation with the connecting nut of the adapter connector to achieve a locking connection, the tail shell part 90 is connected to the rear side of the main shell 20 to cover the inner body 1, and the travel switch assembly is mounted on the main shell 20.

[0044] Specifically, the travel switch assembly comprises a travel switch 4 and a driving part 3, the driving part 3 is located radially outside the locking sleeve, and has a driven end located at the front side of the shell and radially outside the locking sleeve, the driving part is connected with the travel switch at the rear side, and the travel switch is triggered during the rearward movement of the driving part to switch the state. The driving part 3 is provided with a reset spring providing an elastic force to the front side, and the shell has a anti-falling stop structure for stopping the driving part 3, which can stop the driving part 3 at the front limit position when the reset spring provides an elastic force to push the driving part 3 forward, and the driven end of the driving part 3 is used to be pushed back when the adapter connector is inserted, and then the on-off state of the travel switch 4 is changed, that is, from the loop on state to the loop off state or vice versa, and the reset spring pushes the driving part 3 forward to return to the front limit position when the adapter connector is pulled out and the on-off state of the travel switch 4 is changed again.

[0045] As shown in the embodiment, Figures 1-4 The driving part 3 comprises a driven ring body 30, and the driven ring body 30 is connected with a mounting rod 31 at the rear side. As the name implies, the driven ring body 30 is a ring structure driven by the adapter connector, and the front end of the driven ring body 30 constitutes a driven end, that is, when the adapter connector is inserted, the adapter connector can push the front end of the driven ring body 30 and push it to move backward. The shell is provided with a mounting rod through hole through which the mounting rod 31 passes from front to back, and the travel switch assembly is installed on the shell by the mounting rod 31. The travel switch 4 is located at the rear side of the driven ring body 30, and the trigger rod of the travel switch 4 can be directly connected with the driven ring body 30, or in the embodiment as shown, the trigger rod of the travel switch 4 is connected with the mounting rod, and when the driven ring body 30 moves backward and drives the mounting rod to move backward, the trigger rod moves backward.

[0046] The number of mounting rods 31 at the rear side of the driven ring body 30 is more than two to ensure the stability of the installation on the connector shell, and when the trigger rod 34 of the travel switch 4 is connected with the mounting rod 31, the number of travel switches 4 is not more than the number of mounting rods 31, that is, the number of travel switches can be equal to or less than the number of mounting rods. From Figure 4As can be seen from the corresponding embodiment, there are two limit switches, which is less than the number of mounting rods. The two limit switches serve as backups for each other or verify each other to ensure the accuracy of the detection signal.

[0047] In the embodiment where the limit switch contact rod is connected to the mounting rod, the return spring is located on the rear side of the mounting rod without the limit switch connected to it. The mounting rod through-hole on the connector housing is a stepped hole with a smaller diameter at the front and a larger diameter at the back. The front end of the mounting rod 31 is located within the smaller diameter section of the mounting rod through-hole. The rear position of the mounting rod 31 has an outer flange 310. The stepped surface of the stepped hole is used to stop and cooperate with the outer flange 310, thereby achieving anti-disengagement in the forward direction. The larger diameter section at the rear end of the mounting rod through-hole accommodates the return spring. The rear end of the return spring abuts against the tail shell component 90, and the front end abuts against the outer flange 310, providing elastic force for the drive component to return forward. For the mounting rod with the limit switch connected to the rear side, the rear side of the mounting rod through-hole has a receiving cavity to accommodate the limit switch. The rear end of the limit switch is fixedly connected to the rear end of the main housing 20.

[0048] Of course, in one embodiment, the driving component can be a linear rod-shaped structure, similar to the guide rod in a socket and industrial connector disclosed in Chinese Utility Model Patent No. CN214280355U cited in the background art. This driving rod is guided and movably installed within the housing in the front-to-back direction. The front end of the driving rod extends to the front side of the housing, beside the plug section, serving as the driven end. The rear end of the driving rod extends into the housing, with the portion inside connecting to a contact rod. An external protruding ring is provided on the driving rod. A return spring, fitted onto the outside of the driving rod, is installed inside the housing. The front end of the return spring presses against the external protruding ring, and the rear end presses against the housing. Alternatively, in another embodiment, the driving component is a long strip. Depending on the usage environment of the limit switch assembly, it can be a linear or curved long strip. One or more limit switches are connected to the rear side of the driving component. When the same driving component moves back and forth, it simultaneously triggers the limit switches connected to its rear side, causing them to switch states.

[0049] The specific structure of limit switch 4 is as follows: Figures 5-10 As shown, the switch includes a switch body, a contact rod 34 is guided and mounted on the switch body, a shorting member 43 is fixedly connected to the contact rod 34, the shorting member 43 is located beside the contact rod 34, and a pair of terminals are provided on the switch body at positions corresponding to the shorting member 43. During the forward and backward movement of the contact rod 34, it has a short-circuit state in which the shorting member 43 and the pair of terminals are in contact at the same time, and an open-circuit state in which the shorting member and the pair of terminals are disengaged at the same time.

[0050] The switch body includes a main base, which serves as the supporting base for the switch body. It is used to fix the switch body to the relevant equipment and to install related components of the limit switch. In the specific embodiment shown in the figure, the main base includes a fixing seat 400, which is used to fix the switch body to the relevant equipment. Figure 3 As can be seen, when the limit switch assembly is used in the plug-in self-test connector, the mounting base 400 is fixedly connected to the rear end face of the main housing 20 by screws, and the other structures of the limit switch are sealed and installed in the receiving cavity of the main housing 20. The main body also includes a plate-shaped base 401 connected to the front side of the mounting base 400. The plate-shaped base 401 is provided with a guide seat 403 extending forward. The contact rod 34 is guided and inserted into the guide seat 403. The plate-shaped base 401 has a terminal fixing structure on the side of the guide seat 403. The wiring terminal is fixed to the plate-shaped base 401 by the terminal fixing structure. The contact rod 34 has a plate-shaped trigger end 311 fixed on the front side of the plate-shaped base 401. The plate-shaped trigger end 311 has an extension portion extending perpendicular to the axis of the contact rod 34. The shorting member 43 is fixed on the extension portion. Since the shorting member and the wiring terminal are both conductive parts, the plate-shaped trigger end 311, the mounting base 400 and the plate-shaped base 401 are all made of insulating material.

[0051] In one embodiment, the shorting element can be a conductive sheet, and the terminal block is a conductive pin extending forward and backward. During the backward movement of the contact rod, the conductive sheet simultaneously abuts against the two conductive pins, thus establishing a conductive circuit. When the contact rod returns to its forward position, the conductive sheet separates from the two conductive pins, thus breaking the conductive circuit. Figures 5-10 In the illustrated embodiment, the terminal block has a pinhole insertion structure extending forward and backward. The shorting member 43 is a U-shaped structure, with the U-shaped opening facing the terminal block. The two parallel sides of the U-shaped shorting member are pinhole mating structures that mate with the pinhole insertion structure. The pinhole mating structure shortens the distance between the pin and the socket by adjusting their respective lengths in the forward and backward directions, allowing the contact rod to switch the circuit on / off with a smaller forward and backward movement. Specifically, in one embodiment, the pinhole insertion structure is a socket, and the pinhole mating structure is a pin 411; that is, the terminal block includes a socket 411, and the two parallel sides of the U-shaped shorting member are pins. Of course, in other embodiments, the two can be interchanged.

[0052] To facilitate wiring of the terminal blocks, the terminal blocks have a terminal 412 protruding from the rear side of the plate-shaped base. In one embodiment, the terminal 412 can extend directly rearward. Considering that the rear side of the plate-shaped base 401 has a mounting base 400, in order to avoid interference between the terminal block and the mounting base 400, and to reduce the dimensions in the front-to-back direction, Figures 7-10In the shown embodiment, the rear end of the terminal has an extension extending away from the side where the contact lever is located, and the extension forms the terminal end 412. That is, the terminal includes a front and rear extension, and the rear end of the extension has a terminal hole formed therein, which forms the terminal end 412.

[0053] As a kind of switch, when the operating force is eliminated, the contact restores to the initial state, in the shown embodiment, the reset compression spring 32 is sleeved between the plate-shaped base 401 and the plate-shaped trigger end 311 on the contact lever 34, so that the shorting piece and the terminal end are in the open circuit state in the natural state. The reset compression spring 32 can reliably realize the automatic reset of the travel switch, and the reset compression spring 32 is arranged at this position, which is simple in structure and convenient to assemble.

[0054] The terminal end can be fixed on the plate-shaped base in various forms, such as directly injection molding the terminal end on the plate-shaped base, or forcibly installing the terminal end in the mounting hole of the plate-shaped base. Figures 7-10 In the shown embodiment, the terminal fixing structure includes a terminal wrapping section 402 extending forward from the plate-shaped base, and the terminal wrapping section 402 has a mounting hole for mounting the pin hole fitting structure. The pin hole fitting structure is located in the terminal wrapping section, and the terminal wrapping section has a guide hole 4020 in front of the pin hole fitting structure. The guide hole 4020 is in communication with the mounting hole in front and back, so as to guide the pin hole fitting structure and the pin hole fitting structure to be inserted. The rear end of the mounting hole is open, the terminal end is installed from the rear end of the mounting hole, and after the travel switch is installed on the corresponding equipment, the front side of the fixing seat 400 is attached to the rear end surface of the plate-shaped base 401, and the rear end of the terminal end is stopped, so as to ensure the reliable installation of the terminal end in the mounting hole. The extension section on the terminal end extends out of the fixing seat 400.

[0055] The shorting piece can be fixed on the plate-shaped trigger end 311 in various forms, such as directly injection molding the terminal end on the plate-shaped base. Figures 7-10 In the shown embodiment, the plate-shaped trigger end 311 has a shorting piece mounting cavity 312 on the extended part, and the U-shaped shorting piece is installed in the shorting piece mounting cavity 312 from front to back. An insulating pressing plate 313 is bonded or clamped to the plate-shaped trigger end 311 at the front end opening of the shorting piece mounting cavity 312, so as to fix the shorting piece 43 in the plate-shaped base.

[0056] As mentioned above, the contact lever 34 of the travel switch can be directly connected with the driving part, or connected with the driving part through the mounting rod 31. When the contact lever 34 of the travel switch is directly connected with the driving part, a connecting hole can be arranged on the driving part, the contact lever is inserted into the connecting hole and fixed by a jack screw, or the connecting hole on the driving part is a threaded hole, and the contact lever 34 has a threaded section at the front end, which are screwed together. When the contact lever 34 of the travel switch is connected with the driving part through the mounting rod 31, as shown inFigures 10-11 As shown, the rear end of the mounting rod 31 is provided with a threaded hole, and the front end of the contact rod 34 is provided with a threaded section, and the contact rod 34 is screwed into the threaded hole through the threaded section to realize the connection between the mounting rod and the contact rod. The fixed connection between the plate-shaped triggering end 311 and the contact rod 34 can be adhesion or strong assembly, and in Figures 10-11 In the embodiment shown, that is, in the threaded connection mode between the mounting rod and the contact rod, the plate-shaped triggering end 311 is sleeved on the contact rod 34, the contact rod 34 is provided with a stop flange, and the plate-shaped triggering end 311 is clamped between the stop flange and the mounting rod, so as to realize the relative fixed position relationship between the short-circuiting piece and the contact rod.

[0057] In the above-mentioned embodiment, the short-circuiting piece is located at the front side of the terminal, and of course in some other embodiments, the contact rod has a rod section extending to the rear side of the switch body, and the short-circuiting piece is relatively fixed on the part of the contact rod located at the rear side of the switch body, at this time, the terminal is located at the front side of the short-circuiting piece, and the switch body is in a loop conduction state in a natural state, and the short-circuiting piece is separated from the terminal in the process of moving the contact rod backward, and the loop is disconnected.

[0058] In some embodiments, the driven ring body 30 can be a common one-piece ring body structure. In the plug-in detection connector, when the adapter plug is locked and connected with the socket, the locking nut of the adapter plug gradually pushes the driven ring body 30 during the rotation process of the locking nut on the locking sleeve, at this time, since the locking nut performs a rotating forward action, in order to reduce the friction resistance of the locking nut during the rotation process, and to avoid the abrasion of the driven ring body 30, such as Figure 4 , 11 In an embodiment shown, the driven ring body 30 includes a connecting ring body 301 and a rotating ring body 302, the rotating ring body 302 is rotationally arranged at the front side of the connecting ring body 301 around its own axis, the connecting ring body 301 is connected with the mounting rod 31, and the front end face of the rotating ring body 302 constitutes the driven end. In this way, in the process that the locking nut abuts against the rotating ring body 302 and pushes it to move backward, the rotating ring body 302 can itself rotate, which to some extent reduces the friction between the locking nut and the driven ring body 30.

[0059] The relative rotation assembly mode between the rotating ring body 302 and the connecting ring body 301 is not limited, for example, the connecting ring body 301 is a circular ring with a square cross section, the rotating ring body 302 is a ring body structure bent by a thin wall and has a C-shaped cross section with an opening facing backward, the C-shaped opening avoids the connection between the mounting rod 31 and the connecting ring body 301, and the rotating ring body 302 is wrapped around the connecting ring body 301 and can freely rotate relative to the rotating ring body 302. For example, Figure 11In the shown embodiment, the driven ring body 30 comprises a thrust bearing, two thrust washers of which constitute the rotary ring body 302 at the front side and the connecting ring body 301 at the rear side. The rotary ring body 302 and the connecting ring body 301 are formed by using the existing mature thrust bearing, which is convenient to obtain and simple to manufacture. In order to avoid the two thrust washers from being scattered freely, the driven ring body 30 in the embodiment further comprises a retaining member 303 for retaining a certain front-rear distance between the two thrust washers. As can be seen from the drawings, the retaining member 303 used in the embodiment is a retaining sleeve, the rear end of which is connected to the outer circumferential surface of the connecting ring body 301 by force-fitting or screwing, and the front end forms an inward turning edge and is stopped by the rotary ring body 302. As can be further seen from the drawings, the outer edge of the front end surface of the rotary ring body 302 is provided with a ring groove, and the inward turning edge is located in the ring groove and the front side surface is not higher than the front end surface of the rotary ring body 302, so as to avoid interference with the locking nut of the mating connector.

[0060] The connection between the connecting ring body 301 and the mounting rod 31 can be in various modes, such as welding, or a threaded hole is provided on the rear end surface of the connecting ring body 301, and a threaded section is provided on the front end of the mounting rod 31, and the mounting rod 31 is connected to the connecting ring body 301 by screwing. Figure 11 In the shown embodiment, the connecting ring body 301 is provided with a radial through screw hole, and a connecting hole extending rearward through the connecting ring body 301 to the rear end surface of the connecting ring body 301 is also provided, and the front end of the mounting rod 31 has a small-diameter section, the small-diameter section extends into the screw hole from the connecting hole, and a locking nut 33 is connected to the end portion extending into the screw hole. The positioning in the front-rear direction is achieved by the stop between the annular end surface of the rear end of the small-diameter section of the mounting rod 31 and the rear end surface of the connecting ring body 301, so as to ensure the position accuracy when the mounting rod 31 is mounted on the connecting ring body 301.

[0061] The structure of the travel switch assembly is introduced above in the case of being applied to the connector, and of course the travel switch assembly of the utility model is not limited to being applied to the plug-pull self-detecting connector, and is also applicable to other application fields. Of course, when being applied to other devices, the corresponding fixed seat and the plate-shaped base are fixedly connected, the plate-shaped trigger end and the touch rod are fixedly connected, and the other devices need to have the anti-disengagement structure for preventing the touch rod from being disengaged from the front side of the switch main body under the elastic force of the reset compression spring.

[0062] Embodiment of the travel switch of the utility model: the specific structure is same as the travel switch structure in the travel switch assembly introduced above, and no further description is given herein.

[0063] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, and the patent protection scope of the present application is subject to the claims, and any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A travel switch characterized by, The switch body is provided with a pair of terminal posts (412) corresponding to the front and back of the shorting piece (43), and the shorting piece (43) and the pair of terminal posts (412) are simultaneously contacted in the shorting state and are simultaneously separated in the open state in the front and back moving stroke of the touch rod (34).

2. The travel switch of claim 1 wherein, The terminal post (412) has a pinhole insertion structure extending front and back, the shorting piece (43) is a U-shaped structure, and the U-shaped opening of the U-shaped shorting piece (43) faces the direction where the terminal post (412) is located, and the two parallel edges of the U-shaped shorting piece (43) are respectively pinhole matching structures matched with the pinhole insertion structure.

3. The travel switch of claim 2, wherein, The switch body includes a plate-shaped base (401), the plate-shaped base (401) is provided with a guide seat (403) extending forward, the touch rod (34) is guided and installed in the guide seat (403), the plate-shaped base (401) is provided with a terminal fixing structure on the side of the guide seat (403), the terminal post (412) is fixed on the plate-shaped base (401) through the terminal fixing structure, the plate-shaped base (401) is fixed with a plate-shaped trigger end (311) on the front side of the plate-shaped base (401), and the plate-shaped trigger end (311) has an extension part extending perpendicularly to the axis of the touch rod (34). The U-shaped shorting piece (43) is fixed on the extension part.

4. The travel switch of claim 3 wherein, The terminal post (412) has a terminal post (412) exposed from the rear side of the plate-shaped base (401).

5. The travel switch of claim 4 wherein, The rear end of the terminal post (412) has an extension section extending away from the side where the touch rod (34) is located, and the extension section constitutes the terminal post (412).

6. The travel switch according to any one of claims 3 to 5, characterized in that The touch rod (34) is sleeved with a reset compression spring (32) between the plate-shaped base (401) and the plate-shaped trigger end (311) to keep the shorting piece (43) and the terminal post (412) in the open state in the natural state.

7. The travel switch of claim 6 wherein, The terminal fixing structure includes a terminal wrapping section (402) extending forward from the plate-shaped base (401), the pinhole insertion structure is in the terminal wrapping section (402), and the terminal wrapping section (402) has a guide hole (4020) in front of the pinhole insertion structure for guiding the pinhole matching structure and the pinhole insertion structure to be inserted.

8. The travel switch of claim 7 wherein, In the natural state, the pinhole matching structure is in the guide hole (4020).

9. A travel switch assembly characterized by, The drive component (3) is a driven ring body (30), and the front end of the touch rod (34) is directly or indirectly connected with the driven ring body (30) at a certain position in the circumference of the driven ring body (30).

10. The travel switch assembly of claim 9, wherein, The drive component (3) is a driven ring body (30), and the front end of the touch rod (34) is directly or indirectly connected with the driven ring body (30) at a certain position in the circumference of the driven ring body (30).

11. The travel switch assembly of claim 9 or 10, wherein, The drive component (3) is a driven ring body (30), and the front end of the touch rod (34) is directly or indirectly connected with the driven ring body (30) at a certain position in the circumference of the driven ring body (30).

12. The travel switch assembly of claim 10, wherein, The driven ring body (30) comprises a connecting ring body (301) and a rotating ring body (302), the rotating ring body (302) is arranged on the front side of the connecting ring body (301) and rotates around its own axis, and the connecting ring body (301) is directly or indirectly connected with the touch rod (34).

13. The travel switch assembly of claim 12, wherein, The driven ring body (30) comprises a thrust bearing, two thrust washers of the thrust bearing, one on the front side and constituting the rotating ring body (302), and the other on the rear side and constituting the connecting ring body (301), and a retaining member (303) for keeping a certain front-rear distance between the two thrust washers.

14. The travel switch assembly of claim 12 or 13, wherein, The connecting ring body (301) is connected with the touch rod (34) through a mounting rod (31), the connecting ring body (301) is provided with a radial screw hole and a connecting hole extending from the screw hole to the rear end face of the connecting ring body (301), the front end of the mounting rod (31) extends into the screw hole from the connecting hole, a locking nut (33) is connected at the end of the mounting rod (31) extending into the screw hole, and the front end of the touch rod (34) is connected with the rear end of the mounting rod (31).

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