Supporting device and safety carrier

Abstract

The invention provides a supporting device with reliable indication information and a safety carrier. The supporting device comprises a linkage rod and a contact indication structure. The contact indication structure comprises an abutting shell, a pushing piece, an indication piece and a transmission piece. The abutting shell linkage rod moves in the first direction relative to the abutting shell. The pushing piece moves relative to the abutting shell and is provided with a first position and a second position. The pushing piece is located on one side of the linkage rod in the second direction intersecting with the first direction. The indicating piece moves relative to the abutting shell and is provided with first indicating information, and the indicating piece is located on the other side of the linkage rod in the second direction. The transmission piece moves relative to the abutting shell and extends between the pushing piece and the indicating piece. When the pushing piece is located at the first position, the first indication information is hidden in the abutting shell; when the pushing piece is located at the second position, the first indication information is exposed to the abutting shell, and the pushing piece moves towards the second position relative to the abutting shell so as to drive the indication piece and the transmission piece to move relative to the abutting shell.

Description

Technical Field

[0001] This application relates to a support device and a safety vehicle. Background Technology

[0002] Safety vehicles, such as child safety seats, are seating devices designed for children, pets, and others. In the event of a car collision or sudden deceleration, child safety seats typically incorporate support mechanisms to prevent them from sliding forward or rolling over. The child safety seat is installed behind the car seat, with the support mechanism contacting the car floor to enhance installation stability and reliability.

[0003] During use, the support device may not make contact with the car floor, posing a safety hazard to the child safety seat. Related technologies use a contact indicator structure on the child safety seat to determine whether the support device is in contact with the car floor. However, these contact indicators are complex and typically include a flexible pull cord. This flexible cord is prone to jamming during operation, making it inconvenient to use and susceptible to misjudgment, resulting in low reliability. Summary of the Invention

[0004] This application provides a support device and a safety vehicle that can reliably determine whether the device is in contact with the ground.

[0005] According to one aspect of this application, a support device includes a linkage rod and a contact indicating structure. The contact indicating structure includes an abutment shell, a pusher, an indicator, and a transmission member. The linkage rod moves relative to the abutment shell in a first direction. The pusher is movable relative to the abutment shell and has a first position and a second position. The pusher is located on one side of the linkage rod in a second direction intersecting the first direction. The indicator is movable relative to the abutment shell and has first indicating information. The indicator is located on the other side of the linkage rod in the second direction. The transmission member is movable relative to the abutment shell and extends between the pusher and the indicator. When the pusher is in the first position, the first indicating information is hidden within the abutment shell. When the pusher is in the second position, the first indicating information is exposed within the abutment shell. The pusher moves relative to the abutment shell toward the second position to drive both the indicator and the transmission member to move relative to the abutment shell.

[0006] According to one embodiment of this application, the transmission member is pivotally connected to the abutment shell, the transmission member is fixedly connected to the indicator, the pusher is slidably connected to the abutment shell, and the pusher slides relative to the abutment shell toward the second position to drive the transmission member and the indicator to rotate together relative to the abutment shell in a positive direction.

[0007] According to one embodiment of this application, the transmission member includes an abutment portion, the abutment portion and the pusher are located on the same side of the linkage rod in the second direction. When the pusher is located in the first position, at least a portion of the abutment portion is disposed opposite to the pusher in the sliding direction of the pusher. The pusher slides toward the second position to drive the abutment portion to rotate relative to the abutment shell in the positive direction, thereby driving the transmission member and the indicator to rotate together relative to the abutment shell in the positive direction.

[0008] According to one embodiment of this application, the abutting portion includes an abutting plane parallel to the second direction, the pushing member slides along the first direction, and when the pushing member is in the first position, the abutting plane is opposite to the pushing member along the first direction.

[0009] According to one embodiment of this application, when the pusher is located in the first position, the abutting plane is perpendicular to the first direction; when the pusher is located in the second position, the abutting plane is parallel to the first direction.

[0010] According to one embodiment of this application, the transmission member further includes a rotating shaft that extends along the second direction and is pivotally connected to the abutment shell about the second direction, and the abutment portion and the indicator are respectively fixed to the rotating shaft.

[0011] According to one embodiment of this application, the rotating shaft passes through the linkage rod along the second direction, and the linkage rod is slidably connected to the rotating shaft along the first direction.

[0012] According to one embodiment of this application, the contact indicator structure further includes a torsion spring sleeved on the rotating shaft. The torsion spring includes a first lead-out end connected to the abutment shell and a second lead-out end connected to the indicator, or the torsion spring includes a first lead-out end connected to the abutment shell and a second lead-out end connected to the abutment portion.

[0013] According to one embodiment of this application, the contact indication structure further includes a first reset member that drives the transmission member to rotate relative to the abutment shell in a direction opposite to the positive direction. The first reset member is disposed between the indicator member and the abutment shell or between the transmission member and the abutment shell.

[0014] According to one embodiment of this application, the indicator includes a limiting portion, and the abutment shell includes a blocking portion located on one side of the limiting portion in a reverse direction opposite to the positive direction. When the pusher is in the first position, the limiting portion abuts against the blocking portion to prevent the transmission member and the indicator from rotating together relative to the abutment shell in the reverse direction.

[0015] According to one embodiment of this application, the contact indication structure further includes a second reset member, which is located between the pusher and the abutment shell, and drives the pusher to slide toward the first position.

[0016] According to one embodiment of this application, the pushing member slides relative to the abutment shell along the first direction. The pushing member further includes a pushing part, a first limiting part, a second limiting part, a third limiting part, a fourth limiting part, and a fifth limiting part. The second limiting part and the third limiting part are located on both sides of the abutment shell in the second direction, and the fourth limiting part and the fifth limiting part are located on both sides of the abutment shell in the third direction. When the pushing member is in the first position, the pushing part protrudes from the abutment shell, and the first limiting part abuts against the abutment shell along the first direction. When the pushing member is in the second position, at least one of the second limiting part and the third limiting part abuts against the abutment shell along the second direction, and at least one of the fourth limiting part and the fifth limiting part abuts against the abutment shell along the third direction. The first direction, the second direction, and the third direction are mutually perpendicular.

[0017] According to one embodiment of this application, it further includes a support tube, the support tube including a first support tube connected to the abutting shell and a second support tube sleeved outside the first support tube, the second support tube having a plurality of engaging holes arranged along the first direction;

[0018] The support device further includes an adjustment structure, which includes a locking hook, a release button, and a linkage component. The locking hook is disposed inside the first support tube and swings relative to the first support tube around a third direction, which intersects both the first direction and the second direction. The release button slides relative to the first support tube along the third direction. The linkage component is disposed between the locking hook and the release button and includes a linkage rod. The linkage rod is disposed inside the first support tube and slides relative to the first support tube along the first direction. The linkage rod is slidably connected to both the release button and the locking hook. The release button slides along the third direction to drive the linkage rod to slide along the first direction, thereby driving the locking hook to swing relative to the first support tube around the third direction to hook or disengage from any of the locking holes.

[0019] According to another aspect of this application, a safety seat includes a base and a support device of this application. The base is provided with a connector for connecting to a car seat. The support device has an unfolded state away from the base and a folded state fitted to the base. When the support device is in the unfolded state, the pusher is located in the second direction on the side of the linkage rod near the connector, and the indicator is located in the second direction on the side of the linkage rod away from the connector.

[0020] According to one embodiment of this application, the indicator is fixedly connected to the transmission member and the pushing member. The pushing member slides relative to the abutment shell, thereby driving the transmission member and the indicator to slide together relative to the abutment shell. The indicator can deform relative to the abutment shell.

[0021] According to one embodiment of this application, the indicator includes a connecting portion and an elastic arm extending from the connecting portion. The connecting portion is connected to the transmission member. The abutment shell is provided with a sliding channel for the elastic arm to slide. The pushing member slides along the first direction. The sliding channel extends along a third direction. The third direction intersects both the first direction and the second direction. The connecting portion slides along the first direction to drive the elastic arm to slide along the sliding channel and undergo elastic deformation. The first indicator information is disposed on the elastic arm.

[0022] According to one embodiment of this application, the transmission member includes a transmission arm located at least partially on one side of the linkage in a third direction, the third direction intersecting both the first direction and the second direction.

[0023] According to one embodiment of this application, the pushing member is fixedly connected to the transmission member, the indicating member is slidably connected to the transmission member, the pushing member and the transmission member slide relative to the abutment shell along the first direction to drive the indicating member to slide relative to the abutment shell along a third direction, the third direction intersecting both the first direction and the second direction.

[0024] According to one embodiment of this application, the transmission member is a pin extending along the second direction, the indicator is provided with a groove for the pin to slide, the extension direction of the groove intersects with both the first direction and the third direction, and the abutment shell is provided with a groove for the pin to slide along the first direction.

[0025] According to another aspect of this application, a support device includes a linkage rod and a contact indicator structure. The contact indicator structure includes an abutment shell, a pusher, and an indicator. The abutment shell is movably connected to the linkage rod. The pusher is movable relative to the abutment shell and has a first position and a second position, and is spaced apart from the linkage rod. The indicator is movable relative to the abutment shell and has first indicator information. The pusher is movable relative to the abutment shell to drive the indicator to move relative to the abutment shell along a first direction of movement. When the pusher is in the first position, the first indicator information is hidden in the abutment shell. When the pusher is in the second position, the first indicator information is exposed in the abutment shell. The indicator moves relative to the abutment shell along a second direction of movement different from the first direction of movement to drive the linkage rod to move relative to the support tube.

[0026] According to one embodiment of this application, the pusher slides relative to the abutment shell, the indicator rotates relative to the abutment shell, and the pusher slides relative to the abutment shell to drive the indicator to rotate relative to the abutment shell. When the pusher is in the first position, at least a portion of the pusher and at least a portion of the indicator are disposed opposite each other in the sliding direction of the pusher.

[0027] According to one embodiment of this application, the support device includes a drive block, which is slidably connected to the abutment shell and pivotally connected to the indicator. The projections of the drive block and the pusher on a plane perpendicular to the sliding direction of the pusher do not coincide.

[0028] According to one embodiment of this application, the indicator slides relative to the abutment shell to drive the linkage rod to move relative to the support tube.

[0029] According to one embodiment of this application, the support device includes a drive block, which is slidably connected to the abutment shell and the linkage rod. The indicator is connected to the drive block, and the indicator is slidably connected to the abutment shell via the drive block to slide relative to the abutment shell. The drive block slides relative to the abutment shell to drive the linkage rod to slide relative to the support tube.

[0030] According to one embodiment of this application, when the pusher is in the first position, the indicator does not protrude from the abutment shell and hides the first indicator information; when the pusher is in the second position, the indicator protrudes from the abutment shell and exposes the first indicator information.

[0031] According to one embodiment of this application, it further includes a reset rod and a second reset member. The reset rod is connected to the push member and is movable relative to the linkage rod. The second reset member is located between the reset rod and the linkage rod. When the push member is in the second position, the second reset member drives the reset rod to move relative to the linkage rod, thereby driving the push member to move toward the first position.

[0032] According to one embodiment of this application, the device further includes a support tube, which includes a first support tube connected to the abutment shell and a second support tube sleeved outside the first support tube. The second support tube has a plurality of engaging holes arranged along the first direction. The support device further includes an adjustment structure, which includes an engaging hook, a driving block, an indicator, and a linkage assembly. The engaging hook swings relative to the first support tube around a third direction, which intersects both the first and second directions. The driving block is slidably connected to the abutment shell along the third direction. The indicator is connected to the driving block. The linkage assembly is disposed between the engaging hook and the driving block and includes a linkage rod, which is disposed inside the first support tube and slidably connected to it. The linkage rod is slidably connected to both the driving block and the engaging hook. The indicator and the driving block slide along the third direction to drive the linkage rod to slide along the first direction, thereby driving the engaging hook to swing relative to the first support tube around the third direction to hook or disengage from any of the engaging holes.

[0033] According to another aspect of this application, a safety seat includes a base and a support device of this application. The base is provided with a connector for connecting to a car seat. The support device has an unfolded state away from the base and a folded state fitted to the base. When the support device is in the unfolded state, the pusher is located in the second direction on the side of the linkage rod near the connector, and the indicator is located in the second direction on the side of the linkage rod away from the connector.

[0034] An embodiment of the above application has at least the following advantages or beneficial effects:

[0035] The support device of this application includes a support tube, a linkage rod, and a contact indicating structure. The contact indicating structure includes an abutment shell, a pusher, an indicator, and a transmission component. The pusher and the indicator are located on opposite sides of the linkage rod. The pusher can switch between a first position and a second position relative to the abutment shell, driving the transmission component and the indicator to move during the switching process. When the pusher is in the first position, the first indicating information on the indicator is hidden in the abutment shell; when the pusher is in the second position, the first indicating information on the indicator is exposed in the abutment shell. The user can determine whether the support device is in contact with the ground by observing the first indicating information.

[0036] In the support device of this application, the transmission path from the pusher to the indicator is short, the movement is smooth, and jamming is not likely to occur, which helps to reduce misjudgment of whether or not the ground is touched, and ensures the safety and reliability of use. Attached Figure Description

[0037] FIG. 1A This is a perspective view of an embodiment of the safety vehicle of this application, wherein the support device is in an deployed state.

[0038] FIG. 1B yes FIG. 1A The right view.

[0039] FIG. 1C This is a perspective view of an embodiment of the safety vehicle of this application, wherein the support device is in a folded state.

[0040] FIG. 2A A perspective view of the support device of this application in a ground-contact state is shown, in which the second support tube is hidden.

[0041] FIG. 2B The diagram shows a perspective view of the support device of this application in an uncontacted state, in which the second support tube is hidden.

[0042] FIG. 3A This is a cross-sectional perspective view of the first embodiment of the support device of this application.

[0043] FIG. 3B A perspective view of the first embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0044] FIG. 3C A cross-sectional view of the first embodiment of the support device of this application is shown.

[0045] FIG. 3D A perspective view of the first embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0046] FIG. 3E A partial perspective view of the first embodiment of the support device of this application is shown, in which a portion of the contact shell of the contact indicator structure is hidden.

[0047] FIG. 3F A cross-sectional view of the contact indication structure in the first embodiment of the support device of this application is shown, wherein the support device is in an uncontacted state.

[0048] FIG. 3G A cross-sectional view of the contact indicator structure in the first embodiment of the support device of this application is shown, wherein the support device is in a ground-contact state.

[0049] FIG. 3HA cross-sectional view of another location of the contact indication structure in the first embodiment of the support device of this application is shown, showing the second reset member, wherein the support device is in an uncontacted state.

[0050] FIG. 4A The diagram shows a partial perspective view of the first embodiment of the support device of this application in a non-grounded state, in which part of the contact indication structure abutment shell is hidden, and the position of the abutment part is shown.

[0051] FIG. 4B The diagram shows a partial perspective view of the first embodiment of the support device of this application in a non-grounded state, in which part of the contact shell of the contact indicator structure is hidden, and the position of the indicator is shown.

[0052] FIG. 4C The diagram shows a partial perspective view of the first embodiment of the support device of this application in an intermediate state, in which part of the contact indicator structure is hidden and the position of the contact portion is shown.

[0053] FIG. 4D The diagram shows a partial perspective view of the first embodiment of the support device of this application in an intermediate state, in which part of the contact shell of the contact indicator structure is hidden, and the position of the indicator is shown.

[0054] FIG. 4E A partial perspective view of the first embodiment of the support device of this application in the ground contact state is shown, in which part of the contact indication structure abutting shell is hidden, and the position of the abutting part is shown.

[0055] FIG. 4F A partial perspective view of the first embodiment of the support device of this application in the ground-contact state is shown, in which part of the contact shell of the contact indicator structure is hidden, and the position of the indicator is shown.

[0056] FIG. 5A A partial exploded view of a second embodiment of the support device of this application is shown, in which the first support tube is hidden.

[0057] FIG. 5B A partial cross-sectional view of a second embodiment of the support device of this application is shown, wherein the support device is in a non-grounded state.

[0058] FIG. 5C A partial cross-sectional view of a second embodiment of the support device of this application is shown, wherein the support device is in a ground-contact state.

[0059] FIG. 5D A perspective view of the pusher, transmission member, and indicator member in the second embodiment of the support device of this application is shown, wherein the support device is in an uncontacted state.

[0060] FIG. 5E A perspective view of the pusher, transmission member, and indicator member in the second embodiment of the support device of this application is shown, wherein the support device is in an uncontacted state.

[0061] FIG. 5F A partial perspective view of the second embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0062] FIG. 6A A partial exploded view of the third embodiment of the support device of this application is shown, in which the linkage rod is hidden.

[0063] FIG. 6B A partial perspective view of the third embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0064] FIG. 6C A cross-sectional view of the contact indication structure in the third embodiment of the support device of this application is shown, wherein the support device is in an uncontacted state.

[0065] FIG. 6D A cross-sectional view of the contact indication structure in the third embodiment of the support device of this application is shown, wherein the support device is in a ground-contact state.

[0066] FIG. 6E A partial perspective view of the third embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0067] FIG. 7A A partial perspective view of the fourth embodiment of the support device of this application is shown, in which the support tube, linkage rod, part of the contact shell of the contact indicator structure and part of the adjustment structure are hidden.

[0068] FIG. 7B A cross-sectional view of the contact indication structure in the fourth embodiment of the support device of this application is shown, wherein the support device is in an uncontacted state.

[0069] FIG. 7C A cross-sectional view of the contact indicator structure in the fourth embodiment of the support device of this application is shown, wherein the support device is in a ground-contact state.

[0070] FIG. 7D The image shows a partial front view of the fourth embodiment of the support device of this application in a non-grounded state along one of the second directions, concealing part of the contact indicator structure's abutment shell and showing the indicator element.

[0071] FIG. 7E The image shows a partial front view of the fourth embodiment of the support device of this application in a non-grounded state along another direction from the second direction, in which part of the contact indication structure abutment shell is hidden, and the pushing part is shown.

[0072] FIG. 7FThe image shows a partial front view of the fourth embodiment of the support device of this application in a ground-contact state along one of the second directions, in which a portion of the contact shell of the contact indicator structure is hidden, and the indicator is shown.

[0073] FIG. 7G The image shows a partial front view of the fourth embodiment of the support device of this application in a ground-contact state along one of the second directions, in which a portion of the contact shell of the contact indicator structure is hidden, and the pushing part is shown.

[0074] FIG. 7H A partial perspective view of the fifth embodiment of the support device of this application is shown, in which the support tube, linkage rod, part of the contact shell of the contact indicator structure and part of the adjustment structure are hidden.

[0075] FIG. 7I A partial perspective view of the fifth embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0076] FIG. 8A A partial exploded view of the sixth embodiment of the support device of this application is shown, in which the linkage rod is hidden.

[0077] FIG. 8B A partial perspective view of the sixth embodiment of the support device of this application is shown, in which the support tube, a portion of the contact shell of the contact indicator structure, and a portion of the adjustment structure are hidden.

[0078] FIG. 8C The following is a partial longitudinal sectional view of the sixth embodiment of the support device of this application in the ground-contact state, showing the cooperation relationship between the linkage rod and the drive block.

[0079] FIG. 8D The following is a partial cross-sectional view of the sixth embodiment of the support device of this application in a non-grounded state, showing the cooperation relationship between the pusher and the indicator.

[0080] FIG. 8E The following is a partial cross-sectional view of the sixth embodiment of the support device of this application in the ground-contact state, showing the cooperation relationship between the pusher and the indicator.

[0081] FIG. 8F The image shows a partial perspective view of the sixth embodiment of the support device of this application in a non-grounded state.

[0082] FIG. 8G The image shows a partial perspective view of the sixth embodiment of the support device of this application in the ground-contact state. Detailed Implementation

[0083] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the figures denote the same or similar structures, and the same terms denote the same or similar structures, and therefore their detailed descriptions will be omitted. In different embodiments, although some of the same terms may use different reference numerals, the structures of these same terms are the same or similar.

[0084] The safety vehicle of this application can be a child safety seat or a pet safety seat installed in a car seat; in other embodiments, the safety vehicle can also be a stroller, a crib, a baby dining table, etc. The safety vehicle of this application includes a support device, and it is necessary to confirm whether the support device is in place. In other embodiments, any device that includes a support device and requires confirmation of whether the support device is in place can also be applied to the support device of this application.

[0085] The structure of the safety vehicle described in this application will be described in detail below, taking a child safety seat as an example.

[0086] like FIG. 1A and FIG. 1B As shown, the child safety seat includes a base 110, a seat 120, and a support device, wherein the base 110 can be fixed to a car seat; the seat 120 is used to carry occupants such as children or pets; and the support device is used to prevent the child safety seat from tipping over.

[0087] The base 110 is provided with a connector 150 for connecting to the car seat.

[0088] The support device has a rod-like structure. When the support device is in the unfolded state, one end of the support device is connected to the base 110, and the other end is supported on the car floor, so as to be set away from the base 110.

[0089] like FIG. 1C As shown, in some embodiments, the support device is foldable for easy storage. When the support device is folded, it fits against the base 110 to reduce the space occupied by the child safety seat after storage.

[0090] like FIG. 1A and FIG. 1BAs shown, in some embodiments, to accommodate various car models with different seat heights from the floor, the support device is extendable. Specifically, the support device includes a support tube 130, which includes a first support tube 132 and a second support tube 131 sleeved outside the first support tube 132. One end of the second support tube 131 is connected to the base 110. One end of the first support tube 132 is supported on the car floor. The other end of the first support tube 132 can be retracted into or extend beyond the other end of the second support tube 131, thereby adjusting the length of the support tube 130 to accommodate various car models with different seat heights from the floor.

[0091] To ensure that the length of the support tube 130 remains at the adjusted length and does not expand or contract further, the support device of this application is also provided with an adjustment structure. This adjustment structure can lock the first support tube 132 and the second support tube 131, which are movable relative to each other, after the length of the support tube 130 has been adjusted. When it is necessary to readjust the length of the support tube 130 again, the locking of the first support tube 132 and the second support tube 131 can be released. Specifically, some components in the adjustment structure are movably connected to the support tube 130.

[0092] In this application, the direction parallel to the extension direction of the support tube 130 is defined as the first direction Z, and the two directions intersecting with the first direction Z are defined as the second direction X and the third direction Y, and the second direction X and the third direction Y also intersect each other. (See Figures 1 to...) FIG. 8G In the corresponding embodiment, the first direction Z, the second direction X, and the third direction Y are all mutually perpendicular. When the support device is in FIG. 1A and FIG. 1B In the unfolded state shown, the support device is located on the side of the base 110 away from the connector 150 in the second direction X, that is, the support device and the connector 150 are located on both sides of the base 110 in the second direction X.

[0093] To check whether the support device is firmly supported on the car floor, the support device of this application is also provided with a contact indicator structure 133. This contact indicator structure 133 is located along the first direction Z at the end of the support tube 130 away from the base 110. Specifically, as... FIG. 1A As shown, the contact indicator structure 133 is located at the end of the first support tube 132 away from the second support tube 131.

[0094] See FIG. 2A ,from FIG. 2AAs can be seen, when the support device is in the ground-contact state, that is, when the support device is stably supported on the car floor, the first indication information 321 (i.e., safety indication information) of the contact indication structure 133 in the support device is exposed outside the contact indication structure 133. The user can observe the first indication information 321, thereby confirming that the support device is in the ground-contact state and the child safety seat is safely supported on the car floor by the support device.

[0095] See FIG. 2B ,from FIG. 2B As can be seen, when the support device is not in contact with the ground, i.e., when the support device is not stably supported on the car floor, the user cannot observe the safety indication information 321 in the contact indication structure 133. Instead, the user can observe the second indication information 322 (i.e., safety warning information) at this time. This means that the child safety seat is not yet stably supported on the car floor and needs to be adjusted and processed until the first indication information 321 can be observed. Therefore, the contact indication structure 133 in the support device of this application can effectively display the ground contact status of the safety vehicle and avoid the danger caused by it.

[0096] In general, the support device of this application includes a support tube 130, an adjustment structure, and a contact indicator structure 133. The contact indicator structure 133 includes an abutment shell, a pusher 31, an indicator 32, and a transmission member 3. The abutment shell is fixedly connected to the support tube 130. The abutment shell is used to abut against the car floor when the support device is in position. The pusher 31 is used to continuously contact the car floor during the process from when the support device is not in position to when it is in position. The pusher 31 is movable relative to the abutment shell and has a first position and a second position. The indicator 32 is used to indicate whether the support tube 130 is stably supported. The indicator 32 is movable relative to the abutment shell and has a first indication information 321. The indicator 32 and the pusher 31 are spaced apart. The transmission member 3 is movable relative to the abutment shell and extends between the pusher 31 and the indicator 32. The pusher 31 is movable relative to the abutment shell to drive the indicator 32 and the transmission member 3 to move relative to the abutment shell, but does not drive any component of the adjustment structure to move relative to the abutment shell or the support tube 130. When the pusher 31 is in the first position, the first indication information 321 is hidden within the abutment housing; when the pusher 31 is in the second position, the first indication information 321 is exposed within the abutment housing. The first position corresponds to the support device being in an off-ground state, and the second position corresponds to the support device being in a ground-contact state, thus reminding the user whether the support device is properly installed. Typically, when the pusher 31 is in the first position, it at least partially protrudes from the abutment housing to contact the car floor before the abutment housing. When the pusher 31 is subjected to the abutment force of the car floor, it will move relative to the abutment housing.

[0097] Support device embodiment 1

[0098] See FIG. 3A , FIG. 3B and FIG. 3C The second support tube 131 is provided with a plurality of engaging holes 1310 arranged along the first direction Z. The adjustment structure includes an engaging hook 137, two release buttons 138, a linkage assembly, and an elastic element 15. The adjustment structure is disposed on the first support tube 132. The engaging hook 137, the two release buttons 138, and some components of the linkage assembly can move relative to the first support tube 132, while the elastic element 15 will undergo elastic deformation relative to the first support tube 132. When the engaging hook 137 engages with the engaging hole 1310 on the second support tube 131, it restricts the relative movement between the first support tube 132 and the second support tube 131 to fix the length of the support tube 130. When the engaging hook 137 disengages from the engaging hole 1310 on the second support tube 131, the first support tube 132 and the second support tube 131 can move relative to each other to adjust the length of the support tube 130. The linkage component is located between the release button 138 and the locking hook 137. The release button 138 moves relative to the first support tube 132 to drive the locking hook 137 to disengage from the locking hole 1310 via the linkage component. The elastic element 15 is engaged with the locking hook 137 in the locking hole 1310 via the linkage component.

[0099] The linkage assembly includes a linkage rod 134, a limiting rod 141, and a driving rod 142 that are movable relative to the first support tube 132. The limiting rod 141 and driving rod 142 are fixedly connected to the engaging hook 137, while the linkage rod 134 is movably connected to the engaging hook 137 via the limiting rod 141 and driving rod 142. The release button 138 moves relative to the first support tube 132 to drive the linkage rod 134 to move relative to the first support tube 132. The linkage rod 134 moves relative to the first support tube 132 to drive the driving rod 142 and the limiting rod 141 to move together relative to the first support tube 132, thereby causing the engaging hook 137 to move relative to the first support tube 132, thus hooking or disengaging from the engaging hole 1310 of the second support tube 131.

[0100] Specifically, the linkage assembly also includes a positioning plug 143, which is fixed to the first support tube 132 and located inside the first support tube 132. A limiting rod 141 passes through the positioning plug 143, the linkage rod 134, and the locking hook 137 along the third direction Y, and the limiting rod 141 is pivotally connected to the positioning plug 143. Specifically, the limiting rod 141 will rotate relative to the positioning plug 143 around the third direction Y, thereby indirectly rotating relative to the first support tube 132. The drive rod 142 passes through the positioning plug 143, the linkage rod 134, and the locking hook 137 along the third direction Y. The drive rod 142 is movably connected to the positioning plug 143. Specifically, the positioning plug 143 is also provided with a clearance hole 1349 for the drive rod 142 to slide. The clearance hole 1349 extends along the second direction X, so that the drive rod 142 can slide in the clearance hole 1349 along the extension direction of the clearance hole 1349. This allows the locking hook 137 to move along the second direction X with the drive rod 142, and at the same time drive the limiting rod 141, which is fixedly connected to the locking hook 137, to rotate around the third direction Y. It can be seen that the clearance hole 1349 is a hole that allows the drive rod 142 to move around the position of the limiting rod 141. Therefore, the clearance hole 1349 can also be an arc-shaped hole extending around the limiting rod 141. The drive rod 142 is spaced apart from the limiting rod 141 along the first direction Z, and the drive rod 142 is closer to the hook of the engaging hook 137 than the limiting rod 141, so that the driving hook can move with a large displacement when rotating around the third direction Y to engage or disengage from the engaging hole 1310.

[0101] The linkage rod 134 moves relative to the first support tube 132 along the first direction Z, that is, the linkage rod 134 can move within the first support tube 132 along the extension direction of the first support tube 132. The linkage rod 134 is provided with a sliding hole 1347 through which the limiting rod 141 passes. The sliding hole extends along the first direction Z, so that when the linkage rod 134 moves relative to the first support rod 132 along the first direction Z, the limiting rod 141 can slide within the sliding hole 1347 along the extension direction of the sliding hole 1347. The linkage rod 134 is also provided with a drive hole 1346 through which the drive rod 142 passes. The drive hole 1346 extends in a direction that intersects with the first direction Z and the second direction X, so that when the linkage rod 134 moves relative to the first support rod 132 in the first direction Z, the drive rod 142 can slide in the drive hole 1346 along the extension direction of the drive hole 1346. Specifically, the drive rod 142 is displaced in the second direction X, and the clearance hole 1349 just provides the space for the drive rod 142 to displace in the second direction X.

[0102] In some other embodiments, the limiting rod 141 may be fixedly connected to the positioning plug 143, and the locking hook may rotate and swing around the limiting rod 141.

[0103] Along the first direction Z, one end of the linkage rod 134 is movably connected to the limiting rod 141, the driving rod 142, and the locking hook 137, while the other end of the linkage rod 134 is movably connected to two release buttons 138. Specifically, the two release buttons 138 are located on both sides of the linkage rod 134 in the third direction Y, and can move relative to the linkage rod 134 in the third direction Y. The movement of the two release buttons 138 relative to the linkage rod 134 in the third direction Y can drive the linkage rod 134 to move relative to the first support tube 132 in the first direction Z.

[0104] More specifically, such as FIG. 3C As shown, the end of the first support tube 132 away from the second support tube 131 is fixedly connected to the abutment shell. The linkage rod 134 extends into the abutment shell along the first direction Z, while the two release buttons 138 are slidably connected to the abutment shell along the third direction Y. The limiting rod 141, the driving rod 142, and the positioning plug 143 are located at the end of the linkage rod 134 away from the abutment shell in the first direction Z. A tapered block 1340 is provided at the end of the linkage rod 134 that is movably connected to the release button 138. The tapered block 1340 has a first inclined surface 1341 on each side of the third direction Y, and the first inclined surface 1341 is inclined relative to the first direction Z and the third direction Y. Each release button 138 is block-shaped, and each release button 138 has a second inclined surface 1381 on the side near the linkage rod 134. The second inclined surface 1381 is parallel to the first inclined surface 1341, so that when the two release buttons 138 are subjected to force and slide towards each other in the third direction Y, the sliding cooperation between the second inclined surface 1381 and the first inclined surface 1341 causes the linkage rod 134 to move away from the second support tube 132 in the first direction Z, thereby driving the locking hook 137 in the first support tube 132 to rotate around the third direction Y to disengage from the locking hole 1310 of the second support tube 131.

[0105] like FIG. 3C As shown, the elastic element 15 is disposed between the linkage rod 134 and the abutment shell along the first direction Z, and is used to drive the linkage rod 134 to move along the first direction Z toward the side closer to the second support tube 132, thereby driving the locking hook 137 in the first support tube 132 to rotate around the third direction Y to hook onto the locking hole 1310 of the second support tube 131. Specifically, the elastic element 15 is a compression spring, which is located between the end of the linkage rod 134 away from the locking hook 137 and the abutment shell in the first direction Z. When the two release buttons 138 are subjected to force and slide towards each other relative to the abutment shell along the third direction Y, the linkage rod 137 compresses the compression spring. When the force applied to the two release buttons 138 is removed, the compression spring drives the linkage rod 134 to reset.

[0106] See FIG. 3D to FIG. 3GThe pusher 31 is located on one side of the linkage 134 in the second direction X, and the indicator 32 is located on the other side of the linkage 134 in the second direction X. The transmission member 3 extends between the pusher 31 and the indicator 32. The transmission member 3 is fixedly connected to the indicator 32. The transmission member 3 rotates relative to the abutment shell, so that both the transmission member 3 and the indicator 32 rotate relative to the abutment shell, while the pusher 31 slides relative to the abutment shell. The pusher 31 slides towards the second position to drive the transmission member 3 and the indicator 32 to rotate together relative to the abutment shell in the positive direction.

[0107] The structure of each component of the contact indicator structure in the first embodiment of the support device of this application is described in detail below. First, the structure of the abutment shell is introduced.

[0108] See FIG. 3F and FIG. 3G The contact indicator structure 133 includes a contact shell comprising a top wall 211 and a bottom wall 221 arranged opposite to each other in the first direction Z, and a surrounding wall 212 connecting the top wall 211 and the bottom wall 221. The top wall 211 and the bottom wall 221 may be rectangular in shape. The top wall 211, the surrounding wall 212, and the bottom wall 221 together form an internal space. The top wall 211 is located near the second support tube 131, and the bottom wall 221 is located away from the second support tube 131, for contacting the vehicle floor. The first support tube 132 and the linkage rod 137 pass through the top wall 211 and are inserted into the internal space of the contact shell along the first direction Z, and the aforementioned elastic element 15 is provided between the linkage rod 137 and the bottom wall 221. In this embodiment, the transmission member 3 and the indicator member 32 are located inside the contact shell, and the pushing member 31 is at least partially located inside the contact shell.

[0109] The top wall 211 is provided with a through hole or a transparent window 2110, through which the first indication information 321 of the indicator 32 is exposed to the outside of the contact indication structure 133 and can be observed by the user. The through hole or transparent window 2110 is located on the same side of the linkage rod 134 as the indicator 32 in the second direction X, and is arranged opposite to the indicator 32 in the first direction Z.

[0110] The enclosure wall 212 and the top wall 211 form the upper cover of the contact indicator structure 133, and correspondingly, the bottom wall 221 forms the lower cover of the contact indicator structure 133. The enclosure wall 212 and the top wall 211 can be integrally formed. In some other embodiments, the enclosure wall 212 and the top wall 211 can also be connected by an inlay, a snap-fit, or other fixed connection method.

[0111] The enclosure 212 and the bottom wall 221 can be detachably connected. For example, multiple fixing posts 222 are formed near the edge of the surface of the bottom wall 221 adjacent to the top wall 211. These fixing posts 222 are distributed along the second direction X on two opposite sides of the bottom wall 221, and the enclosure 212 is connected to the bottom wall 221 by tightly fitting with the multiple fixing posts 222. In addition to fixing the upper cover, the fixing posts 222 also strengthen the lower cover. Furthermore, the fixing posts 222 have a certain height in the first direction Z, thereby making the connection between the upper and lower covers more secure. At the same time, the fixing posts 222 of a certain height have a guiding function, making the assembly of the upper and lower covers smoother.

[0112] In some embodiments, an anti-slip layer 226 may also be provided on the end face of the bottom wall 221 away from the top wall 211 (see...). FIG. 3C The anti-slip layer 226 can be made of materials such as rubber. The anti-slip layer 226 is mainly used to increase the friction with the car floor and also has a cushioning effect.

[0113] See FIG. 3D The bottom wall 221 of the abutment shell has a central mounting chamber, which includes a front wall 223 and a rear wall 224 arranged opposite each other in the second direction X. Each of the front wall 223 and the rear wall 224 has a mounting hole 2200 in its middle section, and the two mounting holes 2200 are arranged opposite each other in the second direction X. The bottom wall 221 of the abutment shell has a through hole 2210 for the pusher 31 to slide, thereby achieving a sliding connection between the pusher 31 and the abutment shell. Reinforcing ribs 2211 are formed around the through hole 2210 on the bottom wall 221.

[0114] In this embodiment, the installation chamber also includes a first U-shaped wall 227 and a second U-shaped wall 228 arranged opposite each other along a third direction Y. The front wall 223, the rear wall 224, the first U-shaped wall 227, and the second U-shaped wall 228 together form a relatively enclosed installation chamber, improving structural strength. The installation chamber houses the conical block 1341 of the linkage rod 134, which can move within the installation chamber along a first direction Z. The first support tube 131 is sleeved outside the installation chamber.

[0115] Each of the first U-shaped wall 227 and the second U-shaped wall 228 of the abutment shell has an opening 2280. The two openings 2280 are arranged opposite each other along the third direction Y and penetrate the corresponding U-shaped wall along the third direction Y. Similarly, the enclosure wall 212 of the abutment shell has two mounting ports 2112 arranged opposite each other along the third direction Y and penetrate the enclosure wall 212 along the third direction Y. The first support tube 132 has two through holes 1321 arranged opposite each other along the third direction Y and penetrate the first support tube 132 along the third direction Y. The two mounting ports 2112, the two through holes 1321 and the two openings 2280 are aligned with each other along the third direction Y and are interconnected.

[0116] The release button 138 extends from the outside of the abutment housing through the mounting port 2112, the through port 1321 and the opening 2280 into the mounting chamber, and is linked with the conical block 1340 of the linkage rod 134 located in the mounting chamber.

[0117] See FIG. 3B and FIG. 3C The release button 138 has a through hole 1380 extending through the release button 138 along a first direction Z. The through hole 1380 is an elongated hole extending along a third direction Y. Two fixing ribs 2111 protrude from the top wall 211 of the abutment housing corresponding to the two through holes 1380 of the two release buttons 138. The dimension of the fixing ribs 2111 in the third direction Y is smaller than that of the through hole 1380. The release button 138 can be slidably connected to the abutment housing along the third direction Y through these fixing ribs 2111. The above is just one example of a specific installation method for the release button 138. In this application, the installation method of the release button 138 can be varied, as long as it can achieve a slidable connection to the abutment housing along the third direction Y. These will not be listed here.

[0118] Furthermore, the contact indicator structure also includes two screws 16, which are respectively fixed to the bottom wall 221 of the abutment shell and the two fixing ribs 2111. This enhances the structural strength of the fixing ribs 2111, and during long-term use, it can not only prevent the fixing ribs 2111 from being damaged by repeated impacts from the release button 138, but also enhance the connection strength between the upper and lower covers of the abutment shell, which is beneficial to extending the service life of the contact indicator structure.

[0119] The structure of the pusher 31 in this embodiment will now be described in detail.

[0120] See FIG. 3B and FIG. 3D In the contact indication structure of this embodiment, when the support device is in the unfolded state, the pusher 31 and the connector 150 are located on the same side of the linkage 134 in the second direction X (see...). FIG. 1B ).

[0121] The pusher 31 slides relative to the abutment shell, for example, the pusher 31 slides relative to the abutment shell along the first direction Z to slide into contact with the abutment shell. The pusher 31 is at least partially housed within the abutment shell and at least partially protrudes from the abutment shell. Since the pusher 31 is located on one side of the linkage 134 in the second direction X, even if the pusher 31 and the linkage 134 move in the same direction, there will be no interference with the linkage 134.

[0122] The pusher 31 includes a pusher 314, a first limiting part, a second limiting part, a third limiting part, a fourth limiting part, and a fifth limiting part. When the pusher 31 is in the first position, the pusher 314 protrudes from the through hole 2210 into the bottom wall 221 of the abutment shell along the first direction Z toward the side away from the top wall 211 to abut against the car floor. The first limiting part abuts against the bottom wall 221 in the vertical direction to prevent the pusher 31 from disengaging from the abutment shell along the first direction Z toward the side away from the top wall 211. When the pusher 31 is in the second position, the second limiting part and the third limiting part abut against the abutment shell in the second direction X in opposite directions to prevent the pusher from wobbling in the second direction X. The fourth limiting part and the fifth limiting part abut against the abutment shell in the third direction Y in opposite directions to prevent the pusher from wobbling in the third direction Y.

[0123] See FIG. 3D As an example, the pusher 31 may include two vertical arms 311, a connecting plate 312, two rear extension arms 313, and a downwardly extending push portion 314. The two vertical arms 311 are spaced apart from each other in the third direction Y.

[0124] The connecting plate 312 is connected to the inner side of the two vertical arms 311 in the third direction Y. The connecting plate 312 protrudes towards the indicator 32 in the second direction X relative to the two vertical arms 311 and is arranged in a U-shape. The two rear extension arms 313 are formed by extending from the ends of the two vertical arms 311 away from the top wall 211 in the first direction Z along the second direction X towards the side away from the indicator 32. The pushing part 314 is connected to the ends of the two rear extension arms 313 away from the top wall 211 in the first direction Z and protrudes towards the side away from the top wall 211. The pushing part 314 can be cylindrical or columnar.

[0125] See FIG. 3E The end of the pusher 31 away from the top wall 211, that is, the end of the pusher part 314 of the pusher 31 away from the top wall 211, can also be provided with a ground contact member 35, which can be made of a material with a cushioning effect such as rubber.

[0126] The connecting plate 312, the two rear extension arms 313, and the pushing part 314 together form a driving cavity. The rear extension arms 313 are connected to or integrally formed with a mating part 315. In some other embodiments, the mating part 315 may also be connected to the pushing part 314.

[0127] In some embodiments, the rear wall 224 of the mounting chamber has two notches 2240, which are symmetrically arranged in the third direction Y relative to the mounting holes 2200 on the rear wall 224. The two vertical arms 311 of the pusher 31 can be respectively disposed in the two notches 2240. The connecting plate 312 surrounds the rear wall 224 located between the two notches 2240 and is located between the front wall 223 and the rear wall 224 in the second direction X. The rear extension arm 313 and the push part 314 are disposed on the side of the vertical arm 311 away from the front wall 223 in the second direction X, and protrude outward from the first support tube 132. The rear extension arm 313 and the first support tube 132 are partially opposite each other in the first direction Z. Therefore, the first support tube 132 also provides space for the rear extension arm 313 to slide along the first direction Z, while allowing the push part 314 to be at least partially received in the through hole 2210. In this way, the pusher 31 is installed into the abutment shell.

[0128] Two rear extension arms 313 extend outwards in the third direction Y to form protrusions 3130 on opposite sides. The projection of the protrusions 3130 along the first direction Z onto the bottom wall 221 is located outside the through hole 2210 and opposite the reinforcing rib 2211 along the first direction Z. When the pusher 31 slides downwards to the first position, the protrusions 3130 abut against the reinforcing rib 2211 of the bottom wall 221 along the first direction Z. The surface of the protrusions 3130 that abuts against the bottom wall 221 is the first limiting part.

[0129] Two limiting posts 2212 are also provided on the bottom wall 221. The two limiting posts 2212 are located on both sides of the through hole 2210 in the third direction Y, and protrude from the rear wall 224 in the second direction X toward the side away from the front wall 223, and protrude from the first support tube 132. The protrusion 3130 on the surface of the protrusion 3130 near the front wall 223 in the second direction X contacts and engages with the limiting post 2212. Through the contact and engagement between the protrusion 3130 and the limiting post 2212, the movement of the pushing member 31 toward the front wall 223 is restricted on the one hand, and the sliding of the pushing member 31 is made smoother in the other direction. That is, the limiting post 2212 plays a guiding role, and the surface of the protrusion 3130 abutting against the limiting post 2212 is the second limiting part. Furthermore, the rear wall 224 is housed within the space formed by the U-shaped connecting plate 312 to guide the pusher 31 to slide along the first direction Z. Simultaneously, the surface of the connecting plate 312 in the second direction X can contact and engage with the rear wall 224 to restrict the pusher 31 from moving away from the front wall 223 in the second direction X during its sliding along the first direction Z and in the second position. In other words, the connecting plate 312 abuts against the surface of the rear wall 224 as a third limiting portion.

[0130] Two vertical arms 311 are located within two notches 2240. Each vertical arm 311 abuts against two opposing surfaces of the corresponding notch 2240 in the third direction Y along two opposite directions, thereby limiting the wobbling of the pusher 31 in the third direction Y during sliding in the first direction Z and in the second position. Simultaneously, two rear extension arms 313 abut against adjacent limiting posts 2212 in two opposite directions, also limiting the wobbling of the pusher 31 in the third direction Y during sliding in the first direction Z and in the second position. In other words, the two surfaces of each vertical arm 311 abut against two opposing surfaces of the corresponding notch 2240 in the third direction Y along two opposite directions; these two surfaces of the vertical arm 311 are the fourth and fifth limiting portions, respectively. Similarly, the two surfaces of the two rear extension arms 313 abutting against adjacent limiting posts 2212 in two opposite directions are also the fourth and fifth limiting portions. In some other embodiments, the two types of fourth and fifth limiting portions need not exist simultaneously; only one of them needs to be selected.

[0131] The structure of transmission component 3 in this embodiment will be described in detail below.

[0132] The transmission member 3 rotates relative to the abutment shell; for example, the transmission member 3 is pivotally connected to the abutment shell about a second direction X. In this embodiment, the transmission member 3 includes a rotating shaft 30 and an abutment portion 34.

[0133] The rotation shaft 30 extends along the second direction X and is pivotally connected to the abutment housing. See also FIG. 3D For example, the rotating shaft 30 is rotatable about the second direction X and is located in two mounting holes 2200, but will not be displaced relative to the abutting shell in the first direction Z, the second direction X and the third direction Y.

[0134] During the sliding process of the pusher 31, since the connecting plate 312 is always located between the front wall 223 and the rear wall 224 and is opposite to the mounting holes 2200 on the front wall 223 and the mounting holes 220 on the rear wall 224, the connecting plate 312 is provided with a through hole 3120 for the rotating shaft 30 to pass through. Since the pusher 31 will move relative to the rotating shaft 30 along the first direction Z, the through hole 3120 will extend along the first direction Z, so that when the pusher 31 moves relative to the rotating shaft 30 along the first direction Z, the rotating shaft 30 can slide in the through hole 3120. At the same time, since when the pusher 31 moves to the second position along the first direction Z, the pusher 314 will interfere with the rotating shaft 30 in the first direction Z, the pusher 314 is provided with a relief notch 3140 for avoiding the rotating shaft 30 (see FIG. 4A ).

[0135] In some other embodiments, the via 3120 is not necessary. For example, the pusher 31 does not include the connecting plate 312, or the connecting plate 312 does not have a portion opposite to the mounting hole 2200 on the front wall 223 and the mounting hole 220 on the rear wall 224 in the second direction X during the sliding of the pusher 31. That is, if there is no motion interference between the connecting plate 312 and the rotating shaft 30, the via 3120 does not need to be provided. Similarly, if there is no motion interference between the pusher 314 and the rotating shaft 30, the pusher 314 may not have the avoidance notch 3140.

[0136] See FIG. 3A , 3D In configuration 3E, the rotating shaft 30 passes through the front wall 223 and the rear wall 224 along the second direction X and through the first support tube 132, so that the two ends of the rotating shaft 30 in the second direction X are exposed in the first support tube 132 and housed within the abutment shell. Since the rotating shaft 30 will not displace relative to the first support tube 132 in the first direction Z, the second direction X, or the third direction Y, but will only rotate relative to the first support tube 132 around the second direction X, the first support tube 132 and the abutment shell can be fixedly connected together by the rotating shaft 30 without separation. The first support tube 132 is provided with a through hole 3141 for the rotating shaft 30 to pass through.

[0137] See FIG. 3D and FIG. 3E Specifically, the outer surfaces of the first U-shaped wall 227 and the second U-shaped wall 228 of the installation chamber protrude toward the first support tube 132 to form ribs 2281. Since there is a gap between the second support tube 132 and the installation chamber, the protruding length of the ribs 2281 is greater than the gap between the second support tube 132 and the installation chamber, thereby reducing the swaying of the second support tube 132 relative to the abutting shell. Of course, in some other embodiments, ribs 2281 can also be formed on the front wall 223 and the rear wall 224 protruding toward the second support tube 132.

[0138] During the sliding process of the pusher 31, since the linkage rod 134 always exists in the second direction X, located between the front wall 223 and the rear wall 224 and opposite to the mounting hole 2200 on the front wall 223 and the mounting hole 220 on the rear wall 224, the linkage rod 134 is also provided with a clearance hole 1345 for the rotating shaft 30 to pass through. Since the linkage rod 134 will move relative to the rotating shaft 30 in the first direction Z, the clearance hole 1345 will extend in the first direction Z, so that when the linkage rod 134 moves relative to the rotating shaft 30 in the first direction Z, the rotating shaft 30 can slide in the clearance hole 1345, thereby allowing the linkage rod 134 to be slidably connected to the abutment shell through the rotating shaft 30.

[0139] The abutment part 34 and the pusher 31 are located on the same side of the linkage 134 in the second direction X, such as FIG. 3DAs shown, the abutment portion 34 is also located on the side of the rear wall 224 away from the front wall 223 in the second direction X, that is, outside the installation chamber and outside the first support tube 132. The abutment portion 34 and the rotating shaft 30 can also be an integral structure.

[0140] In this embodiment, see FIG. 4A The abutment portion 34 is fixed to the end of the rotating shaft 30 away from the indicator 32. When the support device is in the un-bottomed state, that is, when the pusher 31 is in the first position, the abutment portion 34 is disposed opposite to at least a portion of the pusher 31 in the first direction Z, so that when the pusher slides along the first direction Z toward the second position, it can abut against the abutment portion 34, thereby driving the abutment portion 34 and the rotating shaft 30 to rotate together in the positive direction around the second direction X, that is, driving the entire transmission member 3 to rotate in the positive direction around the second direction X. When the pusher 31 is in the second position, the abutment portion 34 can be located in the drive cavity of the pusher 31.

[0141] In this embodiment, see FIG. 3D The indicator 32 is fixed to the end of the rotating shaft 30 away from the abutment portion 34, so that the rotation of the rotating shaft 30 can drive the indicator 32 to rotate. The abutment portion 34 and the rotating shaft 30 can also be an integral structure. At the same time, the indicator 32 is also located on the side of the front wall 223 away from the rear wall 224 in the second direction X, that is, outside the installation chamber and outside the first support tube 132. The indicator 32 is arranged opposite to the through hole or transparent window 2110 in the first direction Z. Therefore, by rotating the indicator 32, the first indicator information 321 or the second indicator information 322 can be selectively displayed in the through hole or transparent window 2110 to be exposed to the abutment shell.

[0142] In some embodiments, the abutment portion 34 may include a fixing portion 341 and an extension portion 342. The fixing portion 341 is sleeved on and fixedly connected to the rotating shaft 30, and the extension portion 342 extends outward from the fixing portion 341. Specifically, when the pusher 31 is in the first position, the extension portion 342 is disposed opposite to the mating portion 315 of the pusher 31 along the first direction Z to cooperate with the mating portion 315 of the pusher 31. When the pusher 31 slides towards the second position along the first direction Z (specifically, when the pusher 31 slides towards the second support foot 131 along the first direction Z), the mating portion 315 in the pusher 31 causes the abutment portion 34 to rotate in the positive direction, thereby driving the rotating shaft 30 to rotate in the positive direction around the second direction X.

[0143] In some embodiments, the abutting portion 34 is provided with an abutting plane 346 (see...). FIG. 4ADuring the rotation of the transmission member 3, the abutment plane 346 remains parallel to the second direction X. A portion of the abutment plane 346 is located on the fixed portion 341, and a portion is located on the extension portion 342. The abutment plane 346 cooperates with the mating portion 315 of the push member 31. That is, when the push member 31 slides towards the second position along the first direction Z, the mating portion 315 of the push member 31 always abuts against the abutment plane 346 and slides along the abutment plane 346, causing the drive member 342 to rotate in the positive direction around the second direction X. When the push member 31 is in the first position, the abutment plane 346 on the extension portion 342 is positioned opposite the mating portion 315 along the first direction Z, and the abutment plane 346 is perpendicular to the sliding direction of the push member 31 (i.e., the first direction Z) (see [reference]). FIG. 4A This allows the pushing member 31 to effectively drive the abutment portion 34 to rotate in the positive direction of the second direction X; during the process of the pushing member 31 sliding from the first position to the second position, the mating portion 315 slides along the extension direction of the abutment plane 346 from the abutment plane 346 on the extension portion 342 to the abutment plane 346 on the fixing portion 341; when the pushing member 31 is in the second position, the abutment plane 346 on the fixing portion 341 is disposed opposite to the mating portion 315 along the second direction X, and the abutment plane 346 is also parallel to the sliding direction of the pushing member 31 (see...). FIG. 4E ).

[0144] In the first embodiment of the support device of this application, the contact indication structure further includes a first reset member that drives the transmission member 3 to rotate in the opposite direction (opposite to the forward direction) relative to the abutment shell about the second direction X. The first reset member is disposed between the indicator member 32 and the abutment shell or between the drive part 34 and the abutment shell. When the support device is in the ground contact state, the first reset member drives the transmission member 3 and the indicator member 32 to rotate in the opposite direction, and drives the push member 31 to slide in the first direction Z toward the first position to extend out of the abutment shell, so that the first indication information 321 is hidden in the abutment shell, and the second indication information 322 is displayed in the through hole or transparent window 2110.

[0145] See FIG. 3E , FIG. 3F , FIG. 3G In this embodiment, the first reset component is a torsion spring 33 installed on the rotating shaft 30. The torsion spring 33 includes a helical body 331 and a first lead-out end 332 and a second lead-out end 333 connected to the helical body 331.

[0146] In this embodiment, the helical body 331 of the torsion spring 33 and the indicator 32 are located on the same side of the front wall 223 in the second direction X, and are located outside the first support tube 132. The helical body 331 of the torsion spring 33 is sleeved on the rotating shaft 30. The second lead-out end 333 of the torsion spring 33 is connected to the indicator 32, and the first lead-out end 332 passes through the first support tube 132 and is connected to the contact shell of the contact indicator structure 133, specifically connected to the front wall 223.

[0147] The connection between the first lead-out end 332 of the torsion spring 33 and the abutment shell can be varied. For example, see... FIG. 3D , FIG. 3E The front wall 223 of the mounting chamber of the abutment shell is provided with a hanging hole 2230, and the first lead-out end 332 can be hooked into the hanging hole 2230. A through hole 3140 is provided on the first support tube 132 corresponding to the position of the hanging hole 2230, and the first lead-out end 332 of the torsion spring 33 can pass through the through hole 3140 and be hooked into the hanging hole 2230. In some other embodiments, hooks for the first lead-out end 332 to be hooked can be provided on the front wall 223 of the mounting chamber of the abutment shell or on the first support tube 132.

[0148] The connection between the second lead 333 of the torsion spring 33 and the indicator 32 can be varied. For example, see... FIG. 3E , FIG. 3F The indicator 32 is sleeved and fixed outside the rotating shaft 30, and the inside of the indicator 32 is hollow. The spiral body 331 of the torsion spring 33 is located inside the hollow indicator 32 and is covered by the indicator 32. The second lead end 333 of the torsion spring 33 abuts against the inner side of the indicator 32.

[0149] In addition, the torsion spring 33 can also be installed on the drive unit 34 and the abutment housing. The specific connection method between the first lead-out end 332 and the abutment housing is similar to that described above, and the specific connection method between the second lead-out end 333 and the drive unit 34 is similar to that between the second lead-out end 333 and the indicator 32, which will not be described again here.

[0150] The structure of indicator 2 in this embodiment will be described in detail below.

[0151] like FIG. 3F , FIG. 3G As shown, in some embodiments, the indicator 32 includes a cylindrical connecting portion 323 and a limiting portion 324 extending outward from the connecting portion 323. The connecting portion 323 is fixed to the rotating shaft 30 and is covered by a helical body 331 of a torsion spring.

[0152] The first instruction information 321 is disposed on the outer surface of the connecting part 323; further, the outer surface of the connecting part 323 is also provided with a second instruction information 322, and the second instruction information 322 and the first instruction information 321 can be disposed adjacent to each other.

[0153] See FIG. 3G When the support device is in the ground-contact state, the first indicator information 321 is exposed and can be observed by the user, while the second indicator information 322 is hidden. See also FIG. 3F When the support device is not in contact with the ground, the second indicator information 322 is exposed and can be observed by the user, while the first indicator information 321 is hidden. The first indicator information 321 and the second indicator information 322 can be contrasting colors, for example, the first indicator information 321 is green and the second indicator information 322 is red. In other embodiments, the first indicator information 321 and the second indicator information 322 can also have different structures, patterns, etc., for easy differentiation.

[0154] In this embodiment, the abutment shell includes a blocking portion 225 located on one side of the limiting portion 324 in the opposite direction. When the pushing member 31 is in the first position, the limiting portion 324 abuts against the blocking portion 225 to prevent the transmission member 3 and the indicator member 32 from rotating together relative to the abutment shell in the opposite direction. This ensures that the torsion spring 33 applies a reverse rotational force to the transmission member 3 and the indicator member 32, and does not allow the second indication information (safety warning information) to move away from the through hole or transparent window 2110 and be hidden inside the abutment shell. In other words, it ensures that the first indication information (safety indication information) 321 is hidden inside the contact indication structure 133.

[0155] See FIG. 3E The blocking part 225 protrudes upward from the bottom wall 221 of the abutment shell toward the top wall 211 and is disposed near the indicator 32, and is integrally formed with one of the fixing posts 222.

[0156] In the first embodiment of the support device of this application, the contact indicator structure further includes a second reset member, which is located between the push member 31 and the abutment shell, and drives the push member 31 to slide along the first direction Z toward the first position.

[0157] like FIG. 3H As shown, the second reset member is a compression spring 17, which is disposed between the top wall 211 of the abutment shell and the pusher 31, and is used to drive the pusher 31 to slide toward the first position. That is, when the pusher 31 is in the first position, the compression spring 17 causes the pushing part 314 of the pusher 31 to extend out of the bottom wall 221 of the contact indicator structure 133.

[0158] Since the pushing member 31 is spaced apart from the abutting part 34 in the first direction Z when in the first position, that is, after the abutting part 34 rotates in the opposite direction X due to the torsion spring 33 until the abutting plane 346 is perpendicular to the mating part 315, the abutting part 34 will not exert a force on the pushing member 31 to drive the pushing member 31 to move towards the first position in the first direction Z. At this time, the pushing member 31 can be driven to move to the first position by the second reset member. Of course, in some other embodiments, the second reset member may not be provided, and the pushing member 31 can be moved to the first position by the weight of the first reset member and the pushing member 31 itself.

[0159] See FIG. 4A to FIG. 4F , FIG. 4A to FIG. 4F The process of the support device of this application changing from a non-grounded state to a grounded state in a first embodiment is shown.

[0160] When the support device is not in contact with the ground, the state of the pushing member 31 is as follows: FIG. 4A and 4B As shown, the pushing part 314 of the pushing member 31 extends out of the bottom wall 221 of the contact indicator structure 133. The pushing part 314 of the pushing member 31 and the abutting part 34 are spaced apart by a distance in the first direction Z, that is, the mating part 315 of the pushing member 31 and the abutting surface 346 of the abutting part 34 do not contact each other. At this time, the pushing member 31 is in the first position, and at least one of the first limiting part, the second limiting part, and the third limiting part, and at least one of the fourth limiting part and the fifth limiting part of the pushing member 31 will abut against the abutting shell to limit the shaking of the pushing member 31 in the first direction Z, the second direction X, and the third direction Y.

[0161] When the support device is not in contact with the ground, the state of the indicator 32 is as follows: FIG. 4B As shown, the limiting portion 324 of the indicator 32 abuts against the blocking portion 225 on the bottom wall 221, and the second indicator information 322 on the indicator 32 is exposed outside the contact indicator structure 133, that is, the second indicator information 322 corresponds to the through hole or transparent window 2110 of the top cover (see FIG. 3C ).

[0162] The supporting device is in the intermediate state between the state of not touching the ground and the state of touching the ground, and the state of the pushing member 31 is as follows: FIG. 4C As shown, under the action of an external force applied by the car floor to the pushing member 31 along the first direction Z toward the top wall 211, the distance between the pushing member 31 and the abutting part 34 in the first direction Z gradually decreases until the mating part 315 of the pushing member 31 abuts the abutting plane 346, driving the abutting part 34 to rotate, as... FIG. 4CAs shown, the abutment portion 34 rotates an angle around the second direction X in the positive direction, causing the rotating shaft 30 and the indicator 32 to rotate through the same angle. During the sliding of the pusher 31 towards the second position along the first direction Z, at least one of the second and third limiting portions, and at least one of the fourth and fifth limiting portions of the pusher 31, abut against the abutment shell to limit the swaying of the pusher 31 in the second direction X and the third direction Y. The contact engagement between the limiting post 2212 on the bottom wall 221 and the pusher 31, and the contact engagement between the rear wall 224 located between the two notches 2240 and the connecting plate 312, serve a guiding function.

[0163] The indicator 32 is in the intermediate state between the non-grounding state and the grounding state of the support device, as follows: FIG. 4D As shown, driven by the rotating shaft 30, the limiting part 324 of the indicator 32 disengages from the blocking part 225 and continues to rotate in the positive direction around the second direction X, so that the second indicator information 322 on the indicator 32 is gradually hidden in the abutment shell, while the first indicator information 321 is gradually exposed to the abutment shell.

[0164] When the support device is in contact with the ground, the state of the pushing member 31 is as follows: FIG. 4E As shown, the bottom wall 221 of the contact indicator structure 133 will abut against the car floor (i.e., the support device is fully supported on the car floor), and the mating part 315 of the pusher 31 abuts against the abutting plane 346 along the second direction X. At this time, the pusher 31 is in the second position, and at least one of the second and third limiting parts, and at least one of the fourth and fifth limiting parts will abut against the abutting shell to limit the pusher 31 from swaying in the second direction X and the third direction Y.

[0165] When the support device is in contact with the ground, the state of the indicator 32 is as follows: FIG. 4F As shown, driven by the rotating shaft 30, the indicator 32 rotates so that the first indicator information 321 on the indicator 32 is exposed outside the abutment shell, and the second indicator information 322 is hidden inside the abutment shell.

[0166] Support device embodiment 2

[0167] See FIG. 5A to FIG. 5F The second embodiment of the support device of this application includes a support tube 130, an adjustment structure and a contact indicator structure 133.

[0168] The support tube 130 and the adjustment structure are the same as those in the first embodiment of the support device of this application, and will not be described again here.

[0169] The contact indicator structure 133 includes an abutment shell, an indicator, a transmission member 46, and a pusher 41, all of which are fixedly connected. The pusher 41 slides relative to the abutment shell along a first direction Z, thereby driving the transmission member and the indicator to slide together relative to the abutment shell, and the indicator also deforms relative to the abutment shell.

[0170] See FIG. 5A and FIG. 5B In the second embodiment of the support device of this application, the structure of the upper and lower covers of the abutment shell is basically the same as that of the first embodiment, and the structure of the top wall 211 is slightly different: the top wall 211 is provided with two through holes or transparent windows 2110 spaced apart along the third direction Y. The structure of the mounting chamber on the bottom wall 221 is slightly different: two notches 2231 are added to the front wall 223 of the mounting chamber, and the two notches 2231 on the front wall 223 can correspond one-to-one with the two notches 2240 on the rear wall 224 along the second direction X.

[0171] The bottom wall 221 of the abutment shell is provided with two guide posts 229 spaced apart along the third direction Y. The guide posts 229 extend along the first direction Z and are located on the side of the front wall 223 away from the rear wall 224 in the second direction X, and are located outside the first support tube 132. The two guide posts 229 are arranged adjacent to the two notches 2231 of the front wall 223.

[0172] like FIG. 5B As shown, there is a gap between the top of each guide post 229 and the top wall 211 of the abutment housing. The two gaps respectively form part of two sliding channels 220, which extend in the third direction Y and along the inner side of the top wall 211.

[0173] See FIG. 5D and FIG. 5E As an example, the pusher 41 may include two vertical arms 413 disposed opposite each other along a third direction Y, a rear connecting plate 414 connecting the two vertical arms 413, a pusher portion 412, and two protrusions 4122. The pusher portion 412 may be cylindrical or cylindrical and can slide relative to the abutment shell along a first direction Z. The two protrusions 4122 are respectively formed by the surface of the pusher portion 412 near the top wall 211 extending outward in two opposite directions along the third direction Y. The two vertical arms 413 are respectively formed by the surface of the pusher portion 412 near the top wall 211 extending toward the top wall 211 on both sides in the third direction Y.

[0174] As an example, the transmission member 46 includes two L-shaped transmission arms 463 and a front connecting plate 464. The two transmission arms 463 are formed by two vertical arms 413 extending away from the pusher 412, respectively. It is understood that the two vertical arms 413 are also spaced apart along a third direction Y. The front connecting plate 464 connects the two ends of the two transmission arms 463 away from the vertical arms 413, that is, the front connecting plate 464 extends along a third direction Y. The L-shaped transmission arms 463 include portions extending along a second direction X and portions extending along a first direction Z.

[0175] See FIG. 5D and FIG. 5E The indicator includes a connecting portion 433 connected to the transmission member and two elastic arms 434 extending from the connecting portion 433. The two elastic arms 434 are spaced apart in a third direction Y and are mirror-symmetrically arranged relative to a first direction Z. Specifically, the connecting portion 433 is connected to the middle of the front connecting plate 464 in the third direction Y. The two elastic arms 434 extend from the connecting portion 43 in opposite directions in the third direction Y. Each elastic arm 434 includes a portion extending in the third direction Y and a portion bent relative to both the third direction Y and the first direction Z.

[0176] like FIG. 5D As shown, when the support device is not in contact with the ground, the portion of the elastic arm 434 extending along the third direction Y is shorter, while the portion bending relative to the third direction Y and the first direction Z is longer; as FIG. 5E As shown, when the support device is in the ground-contact state, the portion of the elastic arm 434 extending along the third direction Y is longer, while the portion bending relative to the third direction Y and the first direction Z is shorter.

[0177] See 5B and FIG. 5C The two elastic arms 434 of the indicator are respectively located within the two sliding channels 220 of the abutment shell. The two elastic arms 434 can deform along the third direction Y, so as to elastically extend away from each other along the third direction Y to deform, or elastically retract towards each other to restore deformation. FIG. 5B As shown, the elastic arm 434 is also provided with a locking part 4340 at its free end. When the support device is not in contact with the ground, the locking part 4340 of the elastic arm 434 can be locked along the third direction Y to the side of the guide post 229 away from the other guide post 229, so as to prevent the elastic arm 434 from disengaging from the corresponding sliding channel 220.

[0178] Each elastic arm 434 has a first indicator information 431 on its surface near the top wall 211. Furthermore, each elastic arm 434 also has a second indicator information 432 on its surface near the top wall 211. The two elastic arms 434 and the two through holes or transparent windows 2110 are arranged opposite each other along the first direction Z.

[0179] SeeFIG. 5A and FIG. 5F The two transmission arms 463 of the transmission component 46 are located on both sides of the linkage rod 134 in the third direction Y. The two vertical arms 413 of the pusher 41 are disposed in the two notches 2240 of the rear wall 224 of the installation chamber. The rear connecting plate 414 of the pusher 41 is located on the side of the rear wall 224 away from the front connecting plate 464 in the second direction X. The portions of the two transmission arms 463 of the transmission component 46 extending along the first direction Z are disposed in the two notches 2231 of the front wall 223 of the installation chamber.

[0180] See FIG. 5A and FIG. 5F In this embodiment, the contact indicator structure 133 may further include a fixed shaft 42 and a second reset member 44. The fixed shaft 42 is the same as the rotation shaft 30 in the first embodiment, and will not be described again here. Since the pusher 41 does not drive the fixed shaft 42 to rotate, even if the shaft pin 42 can rotate relative to the abutment shell, the fixed shaft 42 will not rotate relative to the abutment shell because there is no corresponding element to drive the fixed shaft 42 to rotate. In some other embodiments, the fixed shaft 42 may also be fixedly connected to the abutment shell.

[0181] The second reset member 44 is disposed between the fixed shaft 42 and the pushing member 41. The second reset member 44 can be a compression spring, which can reset the pushing member 41 after sliding. The pushing part 412 is provided with a notch 4120, which is used to prevent the pushing member 41 from interfering with the fixed shaft 42 during the sliding of the first direction Z. A spring seat 4121 is provided in the notch 4120. The spring seat 4121 extends into the second reset member 44 along the first direction Z to facilitate the installation of the elastic member 44 and to position the second reset member 44 to prevent the second reset member 44 from being displaced in the second direction X and the third direction Y during the sliding of the pushing member 41.

[0182] To avoid motion interference, the rear connecting plate 414 of the transmission component 46 is provided with a long groove 4140, which extends along the first direction Z, and the fixed shaft 42 can slide within the long groove 4140 along the first direction Z.

[0183] See FIG. 5B When the support device is not in the bottom-touching state, the pushing part 412 of the pushing member 41 is in the first position, that is, it extends out and abuts the bottom wall 221 of the housing, and the protrusion 4122 of the pushing member 41 abuts the bottom wall 221. The second indication information 432 on the elastic arm 434, which serves as an indicator, is exposed through the through hole or transparent window 2110 of the top wall 211.

[0184] See FIG. 5C and FIG. 5FWhen the car floor applies an external force toward the top wall 211 to the pusher 41, the pusher 41 slides relative to the abutment shell until the abutment shell contacts the car floor. The sliding of the pusher 41 causes the two elastic arms 434 to elastically extend in the two sliding channels 220 in the third direction Y away from each other, so that the first indicator information 431 on the elastic arm 434 faces the through hole or transparent window 2110 on the top cover of the abutment shell and is exposed to the outside of the abutment shell, while the second indicator information 432 on the elastic arm 434 is hidden in the abutment shell, which means that the support device is in the bottoming state.

[0185] When the car floor does not exert an external force on the pusher 41 toward the top wall 211, that is, after the external force is removed, under the action of the second reset member 44, the pusher 41 slides out of the bottom wall 221, causing the two elastic arms 434 to retract in the corresponding sliding channel 220 along the third direction Y toward each other, so that the first indicator information 431 on the elastic arm 434 is hidden inside the abutment shell. When the second indicator information 432 is provided on the elastic arm 434, the second indicator information 432 is directly opposite the through hole or transparent window 2110 on the top cover of the abutment shell and is exposed outside the abutment shell (see FIG. 5B ).

[0186] Support device embodiment three

[0187] See FIG. 6A to FIG. 6E The third embodiment of the support device in this application includes a support tube 130, an adjustment structure, and a contact indicator structure 133.

[0188] The support tube 130 and the adjustment structure are the same as those in the first embodiment of the support device of this application, and will not be described again here.

[0189] The contact indicator structure 133 includes an abutment shell, an indicator, a transmission member 46, and a pusher 41, all of which are fixedly connected. The pusher 41 slides relative to the abutment shell along a first direction Z, thereby driving the transmission member and the indicator to slide together relative to the abutment shell, and the indicator also deforms relative to the abutment shell.

[0190] See FIG. 6A and FIG. 6C The contact shell in the contact indicator structure 133 in this embodiment is similar to that in the second embodiment, except that:

[0191] See FIG. 6A The two guide pillars 229 are located between the two gaps 2231 in the front wall 223.

[0192] See FIG. 6C The top wall 211 has only one through hole or transparent window 2110.

[0193] See FIG. 6CIn this third embodiment, the mounting chamber, based on the second embodiment, has a through hole 2282 on each of the two opposite portions of the second U-shaped wall 228 along the second direction X. The two through holes 2282 are arranged opposite each other along the second direction X, and a guide shaft 47 passes through the two through holes 2282 along the second direction X. The end point of the guide shaft 47 near the top wall 211 is approximately flush with the surface of the two guide posts 229 near the top wall 211. Thus, a sliding channel 230 is formed between the guide shaft 47, the two guide posts 229, and the top wall 211 of the abutment shell. The sliding channel 230 extends along the third direction Y and along the inner side of the top wall 211. The other structures of the abutment shell in this embodiment are the same as in the second embodiment, and will not be described again here.

[0194] See FIG. 6A and FIG. 6B In this embodiment, the transmission member 46 includes an L-shaped transmission arm 463 extending from a vertical arm 413 of the pusher 41 in a third direction Y toward the side away from the rear connecting plate 414, and a front connecting plate 464 extending from the lower end of the transmission arm 463 toward the side away from the rear connecting plate 414. The L-shaped transmission arm 463 has a portion extending along the second direction X and a portion extending along the first direction Z.

[0195] See FIG. 6A and FIG. 6B In this embodiment, the indicator includes a connecting portion 433 and an elastic arm 434 extending from the connecting portion 433. The connecting portion 433 is connected to the front connecting plate 464, and the elastic arm 434 is located in the sliding channel 230 to slide along a third direction Y, such that the elastic arm 434 can elastically extend away from the connecting portion 433 or elastically retract towards the connecting portion 433 along the third direction Y. A first indicator information 431 and a second indicator information 432 are provided on the surface of the elastic arm 434 near the top wall 211. The elastic arm 434 includes a portion extending along the third direction Y, a portion extending along a first direction Z, and a portion bent relative to the third direction Y and the first direction Z. The bent portion of the elastic arm 434 surrounds a guide shaft 47.

[0196] See FIG. 6A and FIG. 6E The transmission arm 463 is located on the Y side of the linkage rod 13 in the third direction, and the portion of the transmission arm 463 extending along the first direction Z is disposed in a notch 2231 on the front wall 223 of the installation chamber.

[0197] See FIG. 6DWhen the car floor applies an external force toward the top wall 211 to the pusher 41, the sliding of the pusher 41 causes the elastic arm 434 to elastically extend along the third direction Y away from the connecting part 433 in the sliding channel 230, so that the part of the elastic arm 434 extending along the third direction Y gradually becomes longer, while the part of the elastic arm 434 extending along the first direction Z gradually becomes shorter. When the first indicator information 431 on the elastic strip 43 is aligned with the through hole or transparent window 2110 on the abutment shell cover, the user observes the first indicator information 431 and can determine that this embodiment is in the ground contact state and can safely use the support device and safety vehicle.

[0198] See FIG. 6C When the car floor does not exert an external force on the pusher 41 toward the top wall 211, that is, after the external force is removed, under the action of the elastic member 44, the pusher 41 slides out of the bottom wall 221, causing the elastic strip 43 to elastically retract in the sliding channel 230 along the third direction Y towards the side near the connecting part 433. This causes the portion of the elastic arm 434 extending along the third direction Y to gradually shorten, while the portion of the elastic arm 434 extending along the first direction Z to gradually lengthen, until the first indicator information 431 on the elastic strip 43 is hidden inside the contact indicator structure 133. When the second indicator information 432 is provided on the elastic strip 43, the second indicator information 432 is directly opposite the through hole or transparent window 2110 on the abutment housing cover and is exposed outside the contact indicator structure 133 (see FIG. 5B ).

[0199] Support device embodiment four

[0200] See FIG. 7A to FIG. 7G The fourth embodiment of the support device in this application includes a support tube 130, an adjustment structure, and a contact indicator structure 133.

[0201] The support tube 130 and the adjustment structure are the same as those in the first embodiment of the support device of this application, and will not be described again here. The contact indicator structure 133 includes an abutment shell, an indicator, a transmission member, and a pushing member 51.

[0202] The transmission component and the pusher component 51 are fixedly connected, and the indicator component is slidably connected to the transmission component. The pusher component 51 slides relative to the abutment shell, thereby causing the transmission component to slide relative to the abutment shell as well, which in turn drives the indicator component to slide relative to the abutment shell in a direction different from the sliding direction of the pusher component and the transmission component. Specifically, the pusher component 51 slides relative to the abutment shell in a first direction Z, while the indicator component can slide relative to the abutment shell in a third direction Y.

[0203] In the fourth embodiment of the support device of this application, the transmission component is a pin 54 extending in the front-rear direction, the indicator component is provided with a sloping groove 53 for the pin 54 to slide, the extension direction of the sloping groove 53 intersects with the first direction Z and the third direction Y, the abutment shell is provided with a sliding groove 2233 for the pin 54 to slide along the first direction Z, and the first support tube 132 is provided with a long groove 1320 for the pin 54 to slide along the first direction Z. The following will illustrate various structures of the contact indicator structure 133 in the fourth embodiment of the support device of this application.

[0204] See FIG. 7A and FIG. 7B In the fourth embodiment of the support device of this application, the upper cover, lower cover, mounting chamber, etc. of the contact shell of the contact indicator structure are similar to those in the first embodiment of the contact indicator structure, except that:

[0205] The top wall 211 has two through holes or transparent windows 2110 spaced apart along the third direction Y.

[0206] The front wall 223 and rear wall 224 of the installation chamber are each provided with a sliding groove 2233 in their middle sections. The sliding groove 2233 is an elongated groove extending along the first direction Z. The two sliding grooves 2233 are opposite each other along the second direction X. The pin 54 passes through the two sliding grooves 2233 along the second direction X, and the two sliding grooves 2233 also serve as sliding guides for the pin 54 in the first direction Z. The first support tube 132 is provided with an elongated groove 1320 corresponding to the position of the sliding groove 2233 (see...). FIG. 7D ), so that the shaft pin 54 passes through along the second direction X, and the shape and structure of the long groove 1320 on the first support tube 132 can be consistent with the shape and structure of the slide groove 2233 on the mounting chamber.

[0207] The front wall 223 and rear wall 224 of the installation chamber are each provided with two mounting holes 2234 symmetrically arranged along the third direction Y relative to the slide groove 2233. The two mounting holes 2234 of the front wall 223 and the two mounting holes 2234 of the rear wall 224 correspond to each other along the second direction X. The first support tube 132 is provided with through holes corresponding to the positions of the mounting holes 2234.

[0208] See FIG. 7A and FIG. 7B The fourth embodiment of the support device in this application further includes two connecting pins 60. Each connecting pin 60 passes through a through hole in the first support tube 132 and mounting holes 2234 in the front wall 223 and the rear wall 224, respectively, connecting the support tube 132 to the contact indicator structure 133. The connecting pins 60 have the same structure as the rotating shaft 30 in the first embodiment, only differing in position. Of course, in other embodiments, the connecting pins 60 can be fixedly connected to the first support tube 132, the front wall 223, and the rear wall 224.

[0209] As an example, the pusher 51 may include two vertical arms 511, a connecting arm 512, and a pusher 514. The two vertical arms 511 are arranged opposite each other in a third direction Y; the connecting arm 512 is connected to the ends of the two vertical arms 511 near the top wall 211 in a first direction Z, and protrudes in a second direction X away from the vertical arms 511, and the connecting arm 512 may be U-shaped; the pusher 514 is connected to the ends of the two vertical arms 511 away from the top wall 211, extends in a direction away from the top wall 211, and is located on the side of the vertical arms 511 in the second direction X away from the connecting arm 512, and the pusher 514 may be cylindrical or columnar.

[0210] See FIG. 7A , FIG. 7E and FIG. 7G The pushing part 514 has a protrusion 5140 extending towards the top wall 211 at the middle of its end near the top wall 211. Two spring seats 5141 are symmetrically arranged on both sides of the protrusion 5140 in the third direction Y. Two second reset members 55 are respectively installed on the two spring seats 5141. The second reset members 55 can be compression springs, located between the top wall 211 and the pushing part 51, and can reset the moving pushing part 51.

[0211] See FIG. 7A , FIG. 7B and FIG. 7C The indicator in the fourth embodiment of the support device of this application includes an elongated indicator strip 52. The indicator strip 52 extends along the third direction Y. The indicator strip 52 is located on the side of the indicator near the top wall 211. The surface of the indicator strip 52 adjacent to the top wall 211 is provided with two first indicator messages 521 arranged at intervals along the third direction Y.

[0212] In some other embodiments, the surface of the indicator bar 52 adjacent to the top wall 211 is provided with two second indicator information 522 in other areas besides the first indicator information 521, and the two second indicator information 522 are spaced apart along the third direction Y.

[0213] See FIG. 7D and FIG. 7F It can be seen that the two ends of the indicator strip 52 abut against the two connecting pins 60 in the direction of the bottom wall 221 in the third direction Y, so as to ensure that the two ends of the indicator strip 52 will not tilt in the direction of the third direction Y.

[0214] The indicator bar 52 of the indicator is fixed with a groove 53 on the side near the bottom wall 221, forming an acute angle α between the groove 53 and the indicator bar 52. The acute angle α between the groove 53 and the indicator bar 52 can be in the range of 20°-70°, for example, 30°, 40°, 50°, 55°, and 60° are all feasible. The pin 54 is fixed to the pusher 51 and passes through the groove 53 in the second direction X.

[0215] See FIG. 7D to FIG. 7G , FIG. 7D to FIG. 7G The process of the support device according to the fourth embodiment of this application changing from a non-grounded state to a grounded state is shown.

[0216] When the support device is not in contact with the ground, such as FIG. 7D and FIG. 7E As shown, the pusher 51 extends out of the bottom wall 221 of the contact housing of the contact indicator structure 133, the pin 54 is located at the end of the inclined groove 53 near the bottom wall 221, the second indicator information 522 on the indicator is exposed upward outside the contact indicator structure 133, that is, the second indicator information 522 corresponds to the through hole or transparent window 2110 of the top cover, and the first indicator information 521 is hidden inside the contact housing 133 of the contact indicator structure.

[0217] When the support device is in contact with the ground, such as FIG. 7C , FIG. 7F and FIG. 7G As shown, under the upward force applied to the pusher 51 by the car floor, the pusher 51 slides towards the top wall 211 along the first direction Z until the abutment shell contacts the car floor. The pin 54 slides along the first direction Z with the pusher 51 to the end of the inclined groove 53 near the top wall 211, thereby driving the indicator to slide in the positive direction of the third direction Y, so that the first indicator information 521 on the indicator is exposed upward to the contact indicator structure 133, that is, the first indicator information 521 corresponds to the through hole or transparent window 2110 of the top cover.

[0218] When the external force acting on the pusher 51 is removed, under the action of the second reset member 55, the pusher 51 slides away from the top wall 211 along the first direction Z, so that the pusher 514 and the ground contact member 35 extend out of the bottom wall 221 of the contact indicator structure 133; during this process, the pin 54 slides with the pusher 51 to the end of the inclined groove 53 near the bottom wall, and drives the indicator to slide in the opposite direction of the third direction Y along the inclined groove 53, so that the second indicator information 522 on the indicator faces upward to correspond to the through hole or transparent window 2110 of the top cover, and the first indicator information 521 is hidden in the abutment shell of the contact indicator structure 133.

[0219] Support device embodiment five

[0220] See FIG. 7H and FIG. 7I The fifth embodiment of the support device in this application includes a support tube 130, an adjustment structure, and a contact indicator structure 133.

[0221] The fifth embodiment of the support device differs from the fourth embodiment only in that the top wall 211 has only one through hole or transparent window 2110. The surface of the indicator strip adjacent to the top wall 211 is provided with only one first indicator information 521 and one second indicator information 522.

[0222] The other structures, functions, and operation processes of the support device in the fifth embodiment of this application are the same as those in the fourth embodiment, and will not be described again here.

[0223] Support device embodiment six

[0224] See FIG. 8A , FIG. 8B The sixth embodiment of the support device in this application includes a support tube 130, an adjustment structure, and a contact indicator structure 133.

[0225] The support tube 130 is the same as that in the first embodiment of the support device of this application, and will not be described again here.

[0226] The adjustment structure includes a linkage rod 134, a locking hook 137, two drive blocks 67, and two indicator elements 62. The linkage rod 134 and the locking hook 137 are the same as those in the first embodiment of the support device of this application, and will not be described again here. However, in this embodiment, there are no two release buttons 138 as in the first embodiment of the support device of this application. Instead, in this embodiment, two release buttons 138 are formed by a one-to-one connection of two drive blocks 67 and two indicator elements 62.

[0227] like FIG. 8B As shown, two drive blocks 67 are spaced apart and positioned opposite each other within the abutment housing along the third direction Y. Neither drive block 67 is exposed in the abutment housing for user operation. The two drive blocks 67 are slidably connected to the abutment housing via fixing ribs 2111. Each drive block 67 has a through hole 670 identical to the through hole 1380 on the release button 138, for slidable connection with the fixing rib 2111. Two indicator elements 62 are located outside the two drive blocks 67 in the third direction Y and are exposed in the abutment housing for user operation.

[0228] Specifically, each indicator 62 is connected to a drive block 67 located on the same side in the third direction Y, and the indicator 62 and the drive block 67 can slide together relative to the housing in the third direction Y to replace the release button 138 sliding relative to the housing in the third direction Y, thereby driving the linkage rod 134 to slide in the first direction Z within the first support tube 132.

[0229] Each indicator 62 will also have a different movement relative to the drive block 67 and the abutment shell on the same side than sliding in the Y direction. Specifically, each indicator 62 will rotate relative to the drive block 67 and the abutment shell on the same side in the rotation direction W.

[0230] Specifically, each indicator 62 is connected to a drive block 67 on the same side via a pivot 65. The pivot 65 and the through hole 670 of the drive block 67 on the same side are spaced apart in the third direction Y. The pivot 65 passes through the drive block 67 on the same side along the second direction X and is fixedly connected to the indicator 62, thereby connecting the drive block 67 and the indicator 62 together. At the same time, the pivot 65 can rotate relative to the drive block 67 on the same side about the second direction X, so that the indicator 62 can also rotate relative to the drive block 67 and the abutment shell on the same side about the second direction X, that is, rotate along the rotation direction W. It can be seen that the rotation direction W is set around the second direction X.

[0231] See FIG. 8A to FIG. 8G The contact indicator structure includes an abutment shell, a pusher 61, and two indicator elements 62. The abutment shell is similar to that of the first embodiment of the support device in this application, but it lacks the fixing post 222 and the reinforcing rib 2211, which will not be described in detail here. The pusher 61 slides relative to the abutment shell to drive the indicator elements 62 to rotate relative to the abutment shell. The indicator elements 62 are provided with first indication information 621. The pusher 61 slides relative to the abutment shell to drive the indicator elements 62 to rotate relative to the abutment shell, thereby revealing the first indication information 621.

[0232] The pusher 61 in the contact indicator structure of the sixth embodiment of the support device of this application is described below.

[0233] See FIG. 8A and FIG. 8B In this embodiment, the pusher 61 in the contact indicator structure 133 can slide relative to the abutment shell along the first direction Z and can extend out of the bottom wall 221 of the abutment shell.

[0234] The pusher 61 includes a body 610 and two push arms 613. The two push arms 613 are connected to the body 610 or integrally formed with it. The two push arms 613 extend outward from the body 610 on both sides in a third-direction Y direction.

[0235] When the support device is not in contact with the ground, the body 610 of the pusher 61 extends out of the bottom end of the support device.

[0236] As an example, the body 610 of the pusher 61 may include two vertical arms 611, a connecting plate 612, and a pusher 614. The two vertical arms 611 are arranged opposite each other in the third direction Y; the connecting plate 612 is connected between the two vertical arms 611, and the connecting plate 612 may be U-shaped, protruding in the second direction X away from the vertical arms 611. The pusher 614 is connected to the ends of the two vertical arms 611 away from the top wall 211 and extends away from the top wall 211, and the pusher 614 may be cylindrical or columnar; the pusher arm 613 extends outward from the pusher 614 in the third direction Y.

[0237] The indicator 62 in the contact indicator structure of the sixth embodiment of the support device of this application is described below.

[0238] See FIG. 8D and FIG. 8E When the pusher 61 is in the first position, that is, when the support device is not in contact with the ground, the indicator 62 and at least part of the pusher 61, which are located on the same side of the third direction Y, are arranged opposite each other in the first direction Z. This allows the two push arms 613 of the pusher 61 to slide along the first direction Z, thereby driving the two indicators 62 to rotate relative to the drive block 67 and the abutment shell, and driving the indicators 62 to protrude out of the abutment shell to display the first indication information 621 of the indicator 62. However, the two push arms 613 will not drive the drive block 67 to move along the third direction Y.

[0239] In this embodiment, when the indicator 62 slides together with the drive block 67 along the third direction Y relative to the abutting shell, it does not drive the pusher 61 to slide along the first direction Z; while the pusher 61 sliding along the first direction Z only drives the indicator to rotate relative to the drive block 67 in the rotation direction W, and does not drive the drive block 67 to slide along the third direction Y. It can be seen that the drive block 67 and the pusher 61 are not set on each other's movement paths, and their movement directions are different, so as to ensure that when adjusting the length of the support tube 130, the display of the first indication information 621 of the indicator 62 will not be affected; and the display of the first indication information 621 of the indicator 62 will not affect the length adjustment of the support tube 130. In this embodiment, the indicator 62 has two different movement directions. When the indicator 62 moves along one movement direction, it drives the drive block 67 to move together, but does not drive the pusher 61 to move; when the indicator 62 moves along the other movement direction, it is driven by the pusher 61 to expose or hide the first indication information 621. Therefore, in this embodiment, the indicator 62 not only has the function of information indication, but also the function of driving the linkage rod.

[0240] See FIG. 8A As an example, the indicator 62 includes two opposing sector plates 623 and an arc plate 624 connected to the two sector plates 623, and the first indicator information 621 is disposed on the outer surface of the arc plate 624.

[0241] Furthermore, the indicator 62 also includes a sealing plate 625, which is connected to two sector plates 623 and an arc plate 624. The two sector plates 623, the arc plate 624 and the sealing plate 625 together form a cavity, that is, the indicator 62 has a hollow structure, is lightweight, moves easily and is not prone to jamming.

[0242] The contact indication mechanism may further include a first reset member 64, which is disposed on the pivot 65. The first reset member 64 has a tendency to hide the first indication information 621 on the indicator 62 within the contact indication structure.

[0243] As an example, the first reset member 64 is a torsion spring, which includes a helical body 641 and a first lead-out end 642 and a second lead-out end 643 connected to the helical body 641. The helical body 641 is sleeved on the pivot shaft 65. The first lead-out end 642 abuts against the drive member 67, and the second lead-out end 643 abuts against the indicator member 62, for example, against the sealing plate 625.

[0244] See FIG. 8D , FIG. 8E The sixth embodiment of the support device of this application further includes a reset rod 135 and a second reset member 136. The linkage rod 134 has a receiving groove 1343 extending along the first direction Z. The reset rod 135 is disposed in the receiving groove 1343 and can slide within the receiving groove 1343 along the first direction Z. The end of the reset rod 135 near the bottom wall 221 in the first direction Z abuts against the pusher 61 of the contact indicator structure 133. The second reset member 136 is, for example, a compression spring, disposed between the end of the reset rod 135 away from the bottom wall 221 in the first direction Z and the groove wall 1344 of the receiving groove 1343 away from the bottom wall 221 in the first direction Z.

[0245] like FIG. 8D and FIG. 8F As shown, when the support device is not in contact with the ground, under the action of the second reset member 136, a part of the pushing part 614 of the pusher 61 and the ground contact member 35 extend out of the bottom wall 21 of the contact indicator structure 133; the first indicator information 621 of the indicator 62 is blocked by the abutment shell and cannot be observed by the user, but the sealing plate 625 of the indicator 62 is exposed in the abutment shell for the user to press along the third direction Y.

[0246] See FIG. 8F The shape of the sealing plate 625 of the indicator 62 can be consistent with the mounting opening 2112 on the abutment housing. When the support device is not in contact with the ground, the sealing plate 625 of the indicator 62 is disposed in the mounting opening 2112 of the enclosure 212 and closes the mounting opening 2112, which not only improves the appearance but also prevents dust, debris, etc. from entering the contact indicator structure. In some other embodiments, the size of the sealing plate 625 can also be slightly smaller than the mounting opening 2112.

[0247] See FIG. 8E and FIG. 8G FIG. 8GWhen the pusher 61 is subjected to an external force, such as a force exerted by the car floor towards the top wall 211, the pusher 61 slides relative to the abutment shell along the third direction Z until the abutment shell abuts against the car floor. At this point, the end of the pusher arm 613 contacts the indicator 62, and the pusher arm 613 drives the indicator 62 to rotate forward about the pivot axis 65, causing the indicator 62 to protrude outward from the mounting opening 2112 of the contact indicator structure, exposing the first indicator information 621 of the indicator 62 so that it can be observed by the user. This indicates that the support device is in the ground contact state. During the sliding process of the pusher 61, the pusher 61 pushes the reset rod 135 upward, thereby compressing the second reset member 136.

[0248] After the external force is removed, under the elastic force of the second reset member 136, the reset rod 135 slides downward, causing the pushing part 614 of the push member 61 to extend out of the bottom wall 221 of the contact indicator structure 133; during this process, under the action of the first reset member 64, the indicator 62 rotates in the opposite direction around the pivot axis 65, causing the indicator 62 to be housed in the abutment shell of the contact indicator structure, so that the first indicator information 621 on the indicator 62 is hidden in the abutment shell, and the user cannot observe the first indicator information 621. At this time, it indicates that the support device is in a non-grounded state.

[0249] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0250] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0251] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0252] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A support device, characterized in that, include: Linkage rod; and The contact indicator structure includes: The abutting shell, and the linkage rod moves relative to the abutting shell along a first direction; A pusher is movable relative to the abutment shell and has a first position and a second position. The pusher is located on one side of the linkage rod in the second direction intersecting the first direction. An indicator, movable relative to the abutment shell and provided with first indicating information, is located on the other side of the linkage rod in the second direction; and A transmission element, movable relative to the abutment housing and extending between the pusher and the indicator; When the pusher is in the first position, the first indication information is hidden in the abutment shell; when the pusher is in the second position, the first indication information is exposed in the abutment shell, and the pusher moves relative to the abutment shell toward the second position to drive the indication and the transmission to move relative to the abutment shell.

2. The support device as claimed in claim 1, wherein the transmission member is pivotally connected to the abutment shell, the transmission member is fixedly connected to the indicator member, the pushing member is slidably connected to the abutment shell, and the pushing member slides relative to the abutment shell toward the second position to drive the transmission member and the indicator member to rotate together relative to the abutment shell in the positive direction.

3. The support device as claimed in claim 2, wherein the transmission member includes an abutment portion, the abutment portion and the pusher are located on the same side of the linkage rod in the second direction, and when the pusher is located in the first position, at least a portion of the abutment portion is disposed opposite to the pusher in the sliding direction of the pusher, and the pusher slides toward the second position to drive the abutment portion to rotate relative to the abutment shell in the positive direction, thereby driving the transmission member and the indicator to rotate together relative to the abutment shell in the positive direction.

4. The support device as claimed in claim 3, wherein the abutting portion includes an abutting plane parallel to the second direction, the pushing member slides along the first direction, and when the pushing member is located in the first position, the abutting plane is opposite to the pushing member along the first direction.

5. The support device as claimed in claim 4, wherein when the pushing member is in the first position, the abutting plane is perpendicular to the first direction; and when the pushing member is in the second position, the abutting plane is parallel to the first direction.

6. The support device as claimed in claim 3, wherein the transmission member further comprises a rotating shaft extending along the second direction and pivotally connected to the abutment shell about the second direction, and the abutment portion and the indicator are respectively fixed to the rotating shaft.

7. The support device as claimed in claim 2, wherein the contact indication structure further includes a first reset member that drives the transmission member to rotate relative to the abutment shell in a direction opposite to the positive direction, the first reset member being disposed between the indicator member and the abutment shell or between the transmission member and the abutment shell.

8. The support device as claimed in claim 2, wherein the indicator includes a limiting portion, and the abutment shell includes a blocking portion located on one side of the limiting portion in a reverse direction opposite to the positive direction, wherein when the pusher is in the first position, the limiting portion abuts against the blocking portion to prevent the transmission member and the indicator from rotating together relative to the abutment shell in the reverse direction.

9. The support device according to any one of claims 1 to 8 further includes a support tube, the support tube including a first support tube connected to the abutment shell and a second support tube sleeved outside the first support tube, the second support tube having a plurality of engaging holes arranged along the first direction; The support device further includes an adjustment structure, the adjustment structure comprising: The locking hook is located inside the first support tube and swings relative to the first support tube around a third direction, the third direction intersecting both the first direction and the second direction; The release button slides relative to the first support tube along the third direction; A linkage component, located between the locking hook and the release button, includes a linkage rod, which is located inside the first support tube and slides relative to the first support tube along the first direction. The linkage rod is slidably connected to both the release button and the locking hook. The release button slides along the third direction to drive the linkage rod to slide along the first direction, thereby driving the locking hook to swing relative to the first support tube around the third direction to hook or disengage from any of the locking holes.

10. A child safety seat, characterized in that, include: The base is equipped with connectors for attaching to car seats; and The support device according to any one of claims 1-9 has an unfolded state away from the base and a folded state attached to the base. When the support device is in the unfolded state, the pusher is located in the second direction on the side of the linkage rod closer to the connector, and the indicator is located in the second direction on the side of the linkage rod away from the connector.

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