Travel switch device and aerospace equipment

Abstract

The present application relates to the field of aerospace technology, and more specifically, to a travel switch device and aerospace equipment, wherein the length direction of the actuating rod is parallel to a first direction, the micro switch comprises a switch body and a reed installed on the switch body, and in the second direction, two micro switches are located on both sides of the actuating rod, and the reed of one actuating rod is arranged opposite to the reed of another actuating rod, the actuating rod is used to move relative to the housing in the first direction, the actuating rod is used to be in pressure contact with the two reeds under the elastic force of the elastic member, and the actuating rod is used to separate from the two reeds during the process of the elastic member restoring elastic deformation, and the second direction is perpendicular to the first direction. The purpose of the present application is to provide a travel switch device and aerospace equipment in response to at least one technical problem involved in the prior art.

Description

Technical Field

[0001] The present application relates to the field of aerospace technology, and in particular to a travel switch device and aerospace equipment. Background Art

[0002] The limit switch plays an important role in the field of spacecraft mechanisms. It changes its on-off circuit through external triggering and plays the role of feedback status signal. For example, when a satellite separates from a rocket through a satellite-rocket separation mechanism, it can not only feedback the satellite release success signal to the carrier, but also feedback the separation power-on signal to the satellite to power on the satellite; when the solar wing or antenna on the satellite is unfolded, it can feedback the satellite that the hinge mechanism has been unfolded and locked successfully. The feedback signal of the limit switch is used by ground personnel to judge the on-orbit status of the spacecraft mechanism and to troubleshoot any problems.

[0003] The limit switch is usually installed near the satellite mechanism in a small space and plays a key role in judging the status of the mechanism. Therefore, the limit switch must meet the requirements of being as small as possible and as light as possible, and have high reliability requirements. It cannot be accidentally triggered due to vibration environment or other reasons to feedback erroneous signals.

[0004] Currently, if a spacecraft wants to achieve the signal state obtained by selecting an external one-time trigger as needed, it generally needs to use a large number of travel switches, which takes up a large space on the spacecraft. Summary of the invention

[0005] The purpose of the present application is to provide a travel switch device and aerospace equipment in view of at least one technical problem involved in the background technology.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions: One aspect of the present application provides a travel switch device, including a housing, and two micro switches, an elastic member and an actuating rod all mounted on the housing, wherein the length direction of the actuating rod is parallel to a first direction, the micro switch includes a switch body and a reed mounted on the switch body, and in a second direction, the two micro switches are located on both sides of the actuating rod, and the reed of one actuating rod is arranged opposite to the reed of another actuating rod, the actuating rod is used to move relative to the housing in the first direction, the actuating rod is used to be in pressure contact with the two reeds under the elastic force of the elastic member, and the actuating rod is used to separate from the two reeds in the process of the elastic member restoring elastic deformation, and the second direction is perpendicular to the first direction.

[0007] Optionally, the travel switch device provided in the present application also includes a guide sleeve fixed to the housing, the axial direction of the guide sleeve is parallel to the first direction, the elastic member includes a spring, the spring is located in the guide sleeve, and the spring is sleeved outside the actuating rod.

[0008] The beneficial effect of this technical solution is that: in this way, the guide sleeve can guide the movement of the actuating rod in the first direction, so that the actuating rod is not likely to deviate from the movement trajectory and accidentally trigger the reed.

[0009] Optionally, the travel switch device provided in the present application also includes a top pin cap, and the top pin cap, the spring, the guide sleeve and the actuating rod are all coaxially arranged, the top pin cap is sleeved on the spring, and the top pin cap and the guide sleeve are slidably matched in the first direction.

[0010] The beneficial effect of this technical solution is that the sliding cooperation between the top pin cap and the guide sleeve in the first direction further improves the accuracy of guiding the actuator rod, while reducing the vibration of the actuator rod caused by the vibration environment or other reasons, and further reducing the possibility of the actuator rod accidentally triggering the reed.

[0011] Optionally, the actuating rod comprises a first rod portion and a second rod portion which are coaxially arranged and connected to each other, the second rod portion is a threaded rod portion, a threaded hole is formed in the pin cap, and the second rod portion cooperates with the threaded hole.

[0012] The beneficial effect of this technical solution is that it enables the actuating rod to be fixed on the top pin cap, so that it is not easy for the actuating rod and the top pin cap to shake during movement, and thus it is not easy for the reed to be accidentally triggered due to the shaking between the actuating rod and the top pin cap.

[0013] Optionally, the actuator rod also includes a trigger block, which is fixed to one end of the first rod portion away from the second rod portion, and both ends of the trigger block protrude from the first rod portion in the second direction. The trigger block is used to abut against the guide sleeve, and the trigger block is used to be in pressure contact with the reed.

[0014] The beneficial effect of this technical solution is that before the push pin cap is subjected to external pressure, under the limitation of the elastic member, the actuating rod and the push pin cap extend out of the outer shell, and the abutment between the trigger block and the guide sleeve limits the distance between the push pin cap and the actuating rod and the outer shell; when the push pin cap is subjected to external pressure, the trigger block moves toward the reed and triggers the reed, thereby realizing the conduction or disconnection of the passage.

[0015] Optionally, the housing includes two guide rails arranged parallel to each other, the guide rails extend in the first direction, and two guide grooves extending in the first direction are formed on the trigger block, and the two guide grooves are slidingly matched with the two guide rails in a one-to-one correspondence.

[0016] The beneficial effect of this technical solution is that the two guide rails cooperate with the guide grooves on the trigger block to guide the movement of the actuator rod in the first direction, and the guide sleeve and the two guide rails together limit the axial and radial displacement of the actuator rod, so that the travel switch device provided by the present application can be in a relatively stable clamping state.

[0017] Optionally, the guide sleeve has a protruding end protruding from the housing in the first direction, a port is formed on the protruding end, and the ejector cap is used to extend the guide sleeve from the port in the first direction.

[0018] The beneficial effect of this technical solution is that it allows the ejector pin cap to extend from the guide sleeve to replace the actuating rod in contact with the outside world. Since the ejector pin cap is threadedly connected to the actuating rod, the ejector pin cap is easy to replace when damaged, which is more convenient than replacing the actuating rod.

[0019] Optionally, the guide sleeve has a receiving cavity communicated with the port, the elastic member and the ejector pin cap are both located in the receiving cavity, and the size of the ejector pin cap is smaller than the size of the receiving cavity in the first direction.

[0020] The beneficial effect of this technical solution is that when the travel switch device provided by the present application is used in a vibrating environment, the push pin cap can be completely retracted into the guide sleeve under the action of external pressure, reducing the force on the push pin cap, allowing the actuator rod to more stably press the spring sheet, thereby improving the stability and reliability of the movable part of the travel switch device.

[0021] Optionally, the trigger block is used to abut against a guide sleeve so that the distance between one end of the ejector pin cap away from the trigger block and the port is not less than 8 mm.

[0022] The beneficial effect of this technical solution is that it makes the stroke of the actuator rod at least 8 mm, and the stroke has sufficient margin, so it is not easy to output signals by mistake and cause the satellite to malfunction.

[0023] Another aspect of the present application provides a space equipment, including a spacecraft and a travel switch device provided in the present application, wherein the travel switch device is installed on the spacecraft.

[0024] The technical solution provided by this application can achieve at least one of the following beneficial effects: The travel switch device and aerospace equipment provided in the present application include two micro switches, and different contact pins can be connected by cables as needed to change the conduction mode of the micro switch. This greatly reduces the use of single-circuit travel switches, reduces the space occupied by travel switches on the spacecraft, and reduces the weight of the spacecraft. In addition, the reduction in the number of travel switches also reduces the manufacturing cost of aerospace equipment.

[0025] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of a three-dimensional structure of an implementation manner of a travel switch device provided in an embodiment of the present application; Figure 2 A schematic diagram of an exploded structure of an implementation manner of a travel switch device provided in an embodiment of the present application; Figure 3 A partial three-dimensional structural schematic diagram of an implementation manner of a housing provided in an embodiment of the present application; Figure 4 A schematic diagram of a partial top view of an embodiment of a housing provided in an embodiment of the present application; Figure 5 A schematic diagram of a three-dimensional structure of an implementation of a top pin cap provided in an embodiment of the present application; Figure 6 A schematic diagram of a three-dimensional structure of an implementation manner of an actuating rod provided in an embodiment of the present application; Figure 7 A schematic diagram of a three-dimensional structure of an implementation of a micro switch provided in an embodiment of the present application; Figure 8 A schematic diagram of a partial internal structure of an implementation of a travel switch device provided in an embodiment of the present application in one state; Fig. 9 for Figure 8 A local enlarged schematic diagram of the middle A; Fig.10 A schematic diagram of a partial internal structure of an implementation manner of a travel switch device provided in an embodiment of the present application in another state.

[0028] Reference numerals: 100, housing; 110, bottom housing; 111, mounting flange; 112, cable outlet hole; 113, upper cover mounting boss; 114, guide rail; 115, micro switch mounting boss; 116, guide sleeve; 120, upper cover; 130, countersunk screw; 200, trigger mechanism assembly; 210, top pin cap; 211, threaded hole; 220, elastic member; 230, actuating rod; 231, second rod portion; 232, annular limiting portion; 233, trigger block; 234, first rod portion; 300, conduction loop assembly; 310, micro switch; 311, trigger head; 312, reed; 313, first contact pin; 314, second contact pin; 315, third contact pin; 316, mounting hole; 317, switch body; 320, screw; 330, nut. DETAILED DESCRIPTION

[0029] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] At present, spacecraft generally use single-circuit travel switches, whose working principle is that the actuator rod is in the on state when pressed and in the off state when released, or in the off state when pressed and in the on state when released. Once the conduction mode of the single-circuit travel switch is determined, it cannot be changed. If you want to change the state of the obtained signal in one trigger, you must install more single-circuit travel switches with different conduction modes, and then choose which single-circuit travel switch to use according to your needs. This makes the travel switches occupy a large space on the spacecraft together, brings a large load to the spacecraft, and increases the manufacturing cost of aerospace equipment.

[0033] For this reason, Figures 1 to 10 As shown, one aspect of the present application provides a travel switch device, including a housing 100, and two micro switches 310, an elastic member 220 and an actuating rod 230, all of which are installed on the housing. The length direction of the actuating rod 230 is parallel to the first direction. The micro switch 310 includes a switch body 317 and a reed 312 installed on the switch body 317. In the second direction, the two micro switches 310 are located on both sides of the actuating rod 230, and the reed 312 of one actuating rod 230 is arranged opposite to the reed 312 of the other actuating rod 230. The actuating rod 230 is used to move relative to the housing 100 in the first direction. The actuating rod 230 is used to be in pressure contact with the two reeds 312 under the elastic force of the elastic member 220, and the actuating rod 230 is used to separate from the two reeds 312 during the process of the elastic member 220 restoring elastic deformation. The second direction is perpendicular to the first direction.

[0034] The micro switch 310 used in the present application is a prior art, and generally includes a switch body 317, and a reed 312 and three contact pins all mounted on the switch body 317. The three contact pins are connected to the cables in different ways. When the reed 312 is triggered to press the trigger head 311, the on-off state is different. For example, the three contact pins of the micro switch 310 are respectively the first contact pin 313, the second contact pin 314 and the third contact pin 315. If two cables are respectively connected to the first contact pin 313 and the second contact pin 314, when the reed 312 is pressed down, the two ends of the cable are in a disconnected state, and when the reed 312 bounces up, the two ends of the cable are in a conducting state; if the two cables are respectively connected to the first contact pin 313 and the third contact pin 315, when the reed 312 is pressed down, the two ends of the cable are in a conducting state, and when the reed 312 bounces up, the two ends of the cable are in a disconnected state. In the travel switch device provided by the present application, the two micro switches 310 can be used together to provide two conduction signals or two disconnection signals when the two reeds 312 are in a pressed state, and correspondingly, two disconnection signals or two conduction signals are provided in a released state; or, the two reeds 312 provide one conduction signal and one disconnection signal when they are in a pressed state, and correspondingly, one disconnection signal and one conduction signal are provided in a released state. Of course, the travel switch device provided by the present application may include more than two micro switches 310 (for example, 3 to 6 micro switches 310, such as 4 or 5 micro switches 310), thereby obtaining more conduction modes. Preferably, a plurality of through holes are provided on the side wall of the housing 100, and each contact pin can extend from each through hole in a one-to-one correspondence.

[0035] The travel switch device provided by the present application includes two micro switches 310, and different contact pins can be connected by cables as needed to change the conduction mode of the micro switch 310, which greatly reduces the use of single-circuit travel switches, reduces the space occupied by travel switches on the spacecraft, and reduces the weight of the spacecraft; in addition, the reduction in the number of travel switches also reduces the manufacturing cost of aerospace equipment. In the embodiment of the present application, the housing 100 preferably includes a bottom shell 110, an upper cover 120 and a countersunk screw 130, and the bottom shell 110 and the upper cover 120 form a relatively closed space and are installed by the countersunk screw 130.

[0036] Optionally, the travel switch device provided in the embodiment of the present application further includes a guide sleeve 116 fixed to the housing 100, the axial direction of the guide sleeve 116 is parallel to the first direction, and the elastic member 220 includes a spring, the spring is located in the guide sleeve 116, and the spring is sleeved outside the actuating rod 230. In this way, the guide sleeve 116 can guide the movement of the actuating rod 230 in the first direction, so that the actuating rod 230 is not likely to deviate from the movement trajectory and erroneously trigger the reed 312.

[0037] Optionally, the travel switch device provided in the embodiment of the present application further includes a pin cap 210, wherein the pin cap 210, the spring, the guide sleeve 116 and the actuating rod 230 are coaxially arranged, the pin cap 210 is sleeved on the spring, and the pin cap 210 and the guide sleeve 116 are slidably matched in the first direction. The pin cap 210 and the guide sleeve 116 are slidably matched in the first direction to further improve the accuracy of guiding the actuating rod 230, and at the same time, the vibration of the actuating rod 230 caused by the vibration environment or other reasons is reduced, and the possibility of the actuating rod 230 triggering the reed 312 by mistake is further reduced.

[0038] Alternatively, if Figure 6 As shown, the actuating rod 230 includes a first rod portion 234 and a second rod portion 231 which are coaxially arranged and connected to each other, the second rod portion 231 being a threaded rod portion, a threaded hole 211 being formed in the top pin cap 210, and the second rod portion 231 being matched with the threaded hole 211. This enables the actuating rod 230 to be fixed on the top pin cap 210, so that the actuating rod 230 and the top pin cap 210 are not likely to shake during the movement, and thus it is not likely to cause the spring leaf 312 to be accidentally triggered due to the shaking between the actuating rod 230 and the top pin cap 210. Preferably, the actuating rod 230 further includes an annular limiting portion 232, which is located between the first rod portion 234 and the second rod portion 231. The annular limiting portion 232 protrudes from the first rod portion 234 in the radial direction of the first rod portion 234, and the annular limiting portion 232 abuts against the top pin cap 210 to limit the size of the second rod portion 231 entering into the top pin cap 210.

[0039] Optionally, the actuating rod 230 further includes a trigger block 233, the trigger block 233 is fixed to one end of the first rod portion 234 away from the second rod portion 231, and both ends of the trigger block 233 protrude from the first rod portion 234 in the second direction, the trigger block 233 is used to abut against the guide sleeve 116, and the trigger block 233 is used to be in pressure contact with the reed 312. Before the pin cap 210 is subjected to external pressure, under the limitation of the elastic member 220, the actuating rod 230 and the pin cap 210 extend out of the housing 100, the trigger block 233 abuts against the guide sleeve 116 to limit the distance that the pin cap 210 and the actuating rod 230 extend out of the housing 100, and when the pin cap 210 is subjected to external pressure, the trigger block 233 moves toward the reed 312 and triggers the reed 312, thereby realizing the passage conduction or disconnection. In the second direction, both sides of the trigger block 233 are chamfered, and the chamfered surface is arranged away from the guide sleeve 116. The chamfer is used to trigger the micro switch 310 to turn it on or off.

[0040] Optionally, the housing 100 includes two guide rails 114 arranged in parallel with each other, the guide rails 114 extending in the first direction, and two guide grooves extending in the first direction are formed on the trigger block 233, and the two guide grooves are in sliding cooperation with the two guide rails 114 in a one-to-one correspondence. The two guide rails 114 cooperate with the guide grooves on the trigger block 233 to guide the movement of the actuating rod 230 in the first direction, and the guide sleeve 116 and the two guide rails 114 together limit the displacement of the actuating rod 230 in the axial direction and the radial direction, so that the travel switch device provided by the present application can be in a relatively stable compression state.

[0041] Optionally, the guide sleeve 116 has a protruding end protruding from the housing 100 in the first direction, and a port is formed on the protruding end, and the ejector cap 210 is used to extend the guide sleeve 116 from the port in the first direction. This allows the ejector cap 210 to extend from the guide sleeve 116, replacing the actuating rod 230 to contact the outside world. Since the ejector cap 210 is threadedly connected to the actuating rod 230, the ejector cap 210 is easy to replace when damaged, which is more convenient than replacing the actuating rod 230. In the embodiment of the present application, preferably, a spring stopper is formed on the guide sleeve 116, and the spring stopper is arranged away from the protruding end. The spring stopper is a ring structure on the inner wall of the guide sleeve 116, and the middle through hole is used for the actuating rod 230 to pass through. The elastic member 220 is located in the accommodating cavity of the guide cylinder, and the end plate of the elastic member 220 abuts against the spring stopper.

[0042] Alternatively, if Fig. 9 As shown, the guide sleeve 116 has a receiving cavity connected to the port, the elastic member 220 and the pin cap 210 are both located in the receiving cavity, and the size of the pin cap 210 is smaller than the size of the receiving cavity in the first direction. This allows the pin cap 210 to be completely retracted into the guide sleeve 116 under the action of external pressure when the travel switch device provided by the present application is used in a vibration environment, reducing the force on the pin cap 210, allowing the actuating rod 230 to more stably press the spring sheet 312, and improving the stability and reliability of the movable part of the travel switch device.

[0043] Optionally, the trigger block 233 is used to abut against the guide sleeve 116 so that the distance between the end of the top pin cap 210 away from the trigger block 233 and the port is not less than 8mm. In the prior art, the trigger stroke of the actuating rod 230 is not long enough. For example, the total stroke is 5mm. The circuit state of the actuating rod 230 remains unchanged from the fully compressed state to 0~2.5mm before release, and the circuit state changes 2.5~5mm after release. The switch stroke does not leave enough margin, which is easy to output signals by mistake, causing the satellite to malfunction. The travel switch device provided by the present application enables the trigger block 233 to abut against the guide sleeve 116 so that the distance between the end of the top pin cap 210 away from the trigger block 233 and the port is not less than 8mm. That is to say, the stroke of the actuating rod 230 is at least 8mm. The stroke has enough margin, and it is not easy to output signals by mistake, and it is not easy to cause the satellite to malfunction.

[0044] Preferably, Figure 2 As shown, the travel switch device provided in the embodiment of the present application includes a trigger mechanism assembly 200 including a top pin cap 210, an elastic member 220 and an actuating rod 230. The elastic member 220 is located inside the top pin cap 210, with one end abutting against the top pin cap 210 and the other end abutting against the bottom shell 110 to provide an outward separation force. The front end of the actuating rod 230 is threadedly connected to the top pin cap 210, and the top pin cap 210 will drive the actuating rod 230 to move outward during the pushing process of the elastic member 220.

[0045] Preferably, the conductive circuit assembly 300 provided in the embodiment of the present application mainly includes a mature shelf product micro switch 310, a screw 320 and a nut 330, and the screw 320 and the nut 330 together fasten the micro switch 310 to the bottom shell 110.

[0046] like Figure 3 As shown, preferably, the bottom shell 110 includes a mounting flange 111, through which the satellite can be installed; the bottom shell 110 is provided with a cable outlet hole 112 and an upper cover mounting boss 113, there are 4 upper cover mounting bosses 113, each of which is provided with a threaded hole inside, for the countersunk screw 130 to press the upper cover 120 onto the bottom shell 110; the bottom shell 110 has a micro switch mounting boss 115, the micro switch mounting boss 115 has 2 through holes, the switch body 317 is formed with a mounting hole 316, and the switch body 317 is mounted on the micro switch mounting boss 115 through the mounting hole 316; the guide sleeve 116 is an outer square and an inner circle, and the inner circle feature and the outer circle of the top pin cap 210 can be a clearance fit, so that the top pin cap 210 can slide inside the guide sleeve 116, and a small round hole is left at the bottom of the guide sleeve 116 for the actuator rod 230 to pass through and be screwed to the top pin cap 210.

[0047] Preferably, Figure 5As shown, the pin cap 210 is a cylinder, one end of which is a circular thin wall, and the other end is provided with a threaded hole 211, and the threaded hole 211 is used for threading with the actuating rod 230.

[0048] Another aspect of the present application provides a spacecraft including a spacecraft and a travel switch device provided in an embodiment of the present application, wherein the travel switch device is installed on the spacecraft.

[0049] The aerospace equipment provided in the present application adopts the travel switch device provided in the present application, including two micro switches 310. Different contact pins can be connected by cables as needed to change the conduction mode of the micro switch 310. This greatly reduces the use of single-circuit travel switches, reduces the space occupied by travel switches on the spacecraft, and reduces the weight of the spacecraft. In addition, the reduction in the number of travel switches also reduces the manufacturing cost of aerospace equipment.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A travel switch device, characterized in that: It includes a shell, and two micro switches, an elastic member and an actuating rod all installed on the shell, the length direction of the actuating rod is parallel to the first direction, the micro switch includes a switch body and a reed installed on the switch body, in the second direction, the two micro switches are located on both sides of the actuating rod, and the reed of one actuating rod is arranged opposite to the reed of the other actuating rod, the actuating rod is used to move relative to the shell in the first direction, the actuating rod is used to be in pressure contact with the two reeds under the elastic force of the elastic member, and the actuating rod is used to separate from the two reeds in the process of the elastic member restoring elastic deformation, and the second direction is perpendicular to the first direction.

2. The travel switch device according to claim 1, characterized in that: It also includes a guide sleeve fixed to the shell, the axial direction of the guide sleeve is parallel to the first direction, the elastic member includes a spring, the spring is located in the guide sleeve, and the spring is sleeved outside the actuating rod.

3. The travel switch device according to claim 2, characterized in that: It also includes a pin cap, wherein the pin cap, the spring, the guide sleeve and the actuating rod are coaxially arranged, the pin cap is sleeved on the spring, and the pin cap and the guide sleeve are slidably matched in the first direction.

4. The travel switch device according to claim 3, characterized in that: The actuating rod comprises a first rod portion and a second rod portion which are coaxially arranged and connected to each other. The second rod portion is a threaded rod portion. A threaded hole is formed in the pin cap, and the second rod portion cooperates with the threaded hole.

5. The travel switch device according to claim 4, characterized in that: The actuating rod also includes a trigger block, which is fixed to one end of the first rod portion away from the second rod portion, and both ends of the trigger block protrude from the first rod portion in the second direction. The trigger block is used to abut against the guide sleeve, and the trigger block is used to be in pressure contact with the spring leaf.

6. The travel switch device according to claim 5, characterized in that: The housing includes two guide rails arranged parallel to each other, the guide rails extend in the first direction, and the trigger block is formed with two guide grooves extending in the first direction, and the two guide grooves are in sliding cooperation with the two guide rails in a one-to-one correspondence.

7. The travel switch device according to claim 5, characterized in that: The guide sleeve has a protruding end protruding from the housing in the first direction, a port is formed on the protruding end, and the ejector cap is used to extend the guide sleeve from the port in the first direction.

8. The travel switch device according to claim 7, characterized in that: The guide sleeve has a receiving cavity communicated with the port, the elastic member and the ejector cap are both located in the receiving cavity, and the size of the ejector cap is smaller than the size of the receiving cavity in the first direction.

9. The travel switch device according to claim 7, characterized in that: The trigger block is used to abut against the guide sleeve so that the distance between the end of the ejector pin cap away from the trigger block and the port is not less than 8 mm.

10. Aerospace equipment, characterized in that The invention comprises a spacecraft and a travel switch device as claimed in any one of claims 1 to 9, wherein the travel switch device is installed on the spacecraft.

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