Guardrail frame and door guard

Abstract

The utility model discloses a guardrail frame, first frame unit one side is connected with the second frame unit of being able to slide to it relatively, the first frame unit is transversely provided with the first push piece of being able to move to it relatively, when the first push piece moves in and is tightly closed the lateral wall of second frame unit, the relative position of first frame unit and second frame unit is locked, when the first push piece moves out and is loose the lateral wall of second frame unit, first frame unit and second frame unit are unlocked and can slide to each other relatively. The utility model further discloses a door guardrail, and the left fixed frame and right fixed frame are equipped with preceding guardrail frame, and the right fixed frame includes right vertical pole, and the upper end of right vertical pole is equipped with right upper connecting seat, and the lower end of right vertical pole is equipped with right lower connecting seat. The left fixed frame includes left vertical pole, and the upper end of left vertical pole is equipped with left upper connecting seat, and the lower end of left vertical pole is equipped with left lower connecting seat. The utility model discloses guardrail frame and door guardrail adapt to more width specifications door frame, and the adaptability is wide.

Description

[Technical Field]

[0001] This utility model relates to a guardrail frame. This utility model also relates to a door guardrail. [Background Technology]

[0002] Door railings are typically installed on door frames inside rooms to limit the movement of infants and toddlers and ensure their safety. To accommodate different door frame widths, sliding door railing frames are now available on the market. These frames consist of a first frame unit and a second frame unit. If the door frame is wide, the first and second frame units slide to the sides to widen before being installed. If the door frame is narrow, the first and second frame units slide towards each other to narrow before being installed. However, the locking structure for locking the first and second frame units on these frames generally uses locking holes and pins. Because the locking holes are spaced apart, the relative position between the first and second frame units cannot be infinitely adjusted. Locking is only possible when the pin is aligned with a specific locking hole, limiting the range of door frames the railing can fit and its adaptability.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a guardrail frame with a simple structure and wide adaptability.

[0005] This utility model also provides a door guardrail that is simple in structure, widely adaptable, and easy to install.

[0006] This utility model is achieved through the following technical solution:

[0007] A guardrail includes a first frame unit, a second frame unit that can slide relative to the first frame unit is connected to one side of the first frame unit, and a first pusher that can move relative to the first frame unit is transversely inserted inside the first frame unit. When the first pusher moves inward and abuts against the side wall of the second frame unit, the relative position of the first frame unit and the second frame unit is locked. When the first pusher moves outward and releases the side wall of the second frame unit, the first frame unit and the second frame unit are unlocked and can slide relative to each other.

[0008] The first jacking component is a screw and is connected to the first frame unit by threads.

[0009] The first frame unit includes a first upper horizontal bar and a first lower horizontal bar arranged at intervals. Multiple first vertical bars are provided between the first upper horizontal bar and the first lower horizontal bar. At least one first connector is fixedly provided on the first frame unit. The first connector includes a horizontal piece and a first side piece connected to one side of the horizontal piece and bent relative to the horizontal piece. The horizontal piece is fixedly connected to the first frame unit. The first side piece and the first frame unit form a first sliding groove for the second frame unit to slide within.

[0010] There are two first connecting members, one of which is set on the first upper crossbar and the other is set on the first lower crossbar. The opening of the first groove on the upper first connecting member faces downward and the opening of the first groove on the lower first connecting member faces upward. The two first connecting members form a clamping shape for the second frame unit and allow the second frame unit to slide within the two first grooves.

[0011] The first upper crossbar is also connected to an injection-molded plunger. The plunger has an opening groove that divides the plunger into an inner plug part and an outer plug part. The first upper crossbar has a tubular structure. The tube wall of the first upper crossbar is inserted into the opening groove so that the inner plug part is located inside the first upper crossbar and the outer plug part is located outside the first upper crossbar. The inner sidewall of the crossbar abuts against the outer plug part. Fasteners that fix the crossbar, the outer plug part and the first upper crossbar are inserted between them.

[0012] The first groove is also provided with an injection-molded plastic sleeve that is fixed relative to the horizontal piece. The plastic sleeve has a U-shaped longitudinal section and is fitted onto the second frame unit from top to bottom. When the first pusher moves relative to the first frame unit and pushes it, the first pusher pushes the plastic sleeve to deform, so that the plastic sleeve clamps and positions the second frame unit.

[0013] The plastic sleeve has upwardly extending portions at both ends, and the horizontal piece is inserted between the two extension portions to fix the plastic sleeve and the horizontal piece relative to each other.

[0014] The other side of the cross plate is provided with a second side plate that is bent relative to it. The second side plate is attached to the side of the first upper cross bar. The first pusher is a screw. The inner plug is fixed with a nut that mates with the screw. The second side plate has a through hole for the first pusher to be exposed. The first upper cross bar has a through hole for the first pusher to pass through.

[0015] The second frame unit is provided with a second connector, and the second connector is provided with a second sliding groove that allows the first frame unit to slide within it. The second frame unit is provided with a second pusher that can move relative to it. When the second pusher abuts against the side wall of the first frame unit, the relative position of the second frame unit and the first frame unit is locked. When the second pusher releases the side wall of the first frame unit and the first pusher releases the side wall of the second frame unit, the second frame unit and the first frame unit unlock each other and can slide relative to each other. The second frame unit includes a second upper crossbar and a second lower crossbar that are spaced apart vertically. Multiple second vertical rods are provided between the second upper crossbar and the second lower crossbar. There are two second connectors, one of which is provided on the second upper crossbar and the other of which is provided on the second lower crossbar. The second sliding groove on the upper second connector faces downward and the second sliding groove on the lower second connector faces upward. The two second connectors form a clamping shape for the first frame unit and allow the first frame unit to slide within the two second sliding grooves.

[0016] A door guardrail includes a left fixing bracket and a right fixing bracket that can be fixed to a door frame. A guardrail frame as described above is provided between the left and right fixing brackets. The right fixing bracket includes a right vertical rod, with an upper right connecting seat at the upper end and a lower right connecting seat at the lower end. A first frame unit has a first upper connecting seat rotatably connected to the upper right connecting seat and a first lower connecting seat rotatably connected to the lower right connecting seat. The left fixing bracket includes a left vertical rod, with an upper left connecting seat at the upper end and a lower left connecting seat at the lower end. A second frame unit has an upper locking seat, with a first locking structure between the upper locking seat and the upper left connecting seat capable of locking both. A lower locking seat is also provided at the lower part of the second frame unit, with a second locking structure between the lower locking seat and the lower left connecting seat.

[0017] The upper right connecting seat includes an upper right seat body detachably connected to the upper end of the right vertical rod. The upper right seat body has an upper right connecting hole for fixing it to the door frame. A right connecting body is detachably connected to the upper right seat body. The right connecting body is sleeved on the upper right seat body and connected by screws. The right connecting body has a connecting post. The first upper connecting seat includes a sleeve sleeved on the connecting post. A connecting shaft rotatably connected to the connecting post is fixed inside the sleeve. A positioning part is provided inside the sleeve. The connecting post has a first positioning groove and a second positioning groove located above the first positioning groove. The first positioning groove and the second positioning groove are connected by an inclined surface. When the positioning part is engaged with the first positioning groove, the guardrail is in a closed state. When the positioning part moves to engage with the second positioning groove, the guardrail is in an open state. The lower end of the connecting shaft has a step extending outward. A first return spring is provided between the step and the inner top surface of the right connecting body, which can push the guardrail to move downward when the positioning part is disengaged from the second positioning groove.

[0018] The lower right connecting seat is provided with a lower right connecting hole for fixing it to the door frame. The lower right connecting seat is also provided with a vertical hole. The first lower connecting seat is provided with a vertical column that can rotate and move up and down within the vertical hole.

[0019] The upper left connecting seat is provided with an upper left connecting hole for fixing it to the door frame, and the lower left connecting seat is provided with a lower left connecting hole for fixing it to the door frame.

[0020] The first locking structure includes a locking hole on the upper left connecting seat, a locking block that can slide inside the upper locking seat and engage or disengage with the locking hole, a first inclined surface on the locking block, a button on the upper side of the upper locking seat that can push the first inclined surface to disengage the locking block from the locking hole when pressed, a second return spring that can push the locking block to slide back to its original position between the upper locking seat and the locking block, and a third return spring that can push the button to reset between the upper locking seat and the button.

[0021] The upper locking seat has a rotating block that can rotate relative to it on its lower side. The rotating block can stop in two positions: a locking position and a releasing position. When the rotating block is in the locking position, the abutment rod on the rotating block abuts against the locking block to prevent the locking block from disengaging from the locking hole. When the rotating block rotates to the releasing position, the abutment rod disengages from the locking block, creating a space for the locking block to disengage from the locking hole. The upper locking seat has a fourth return spring that can push the rotating block back to its original position.

[0022] The second locking structure includes a locking groove on the lower left connecting seat. A locking block that can engage or disengage from the locking groove is slidably provided in the lower locking seat. A fifth return spring that can push the locking block to reset is provided between the locking block and the lower locking seat. A second inclined surface that can push the locking block out of the locking groove is provided in the locking groove when the first locking structure is unlocked and the guardrail is lifted. A third inclined surface that can press the locking block to slide into the lower locking seat when the guardrail is rotated and closed is provided on the lower left connecting seat. A fourth inclined surface that can press the locking block to slide into the upper locking seat when the guardrail is rotated and closed is provided on the upper left connecting seat.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. When the first frame unit and the second frame unit of the guardrail of this utility model slide relative to each other to the desired position, the first pushing member is moved and pressed against the side wall of the second frame unit. Since the side wall of the second frame unit is pressed against the first pushing member, the second frame unit and the first frame unit cannot slide relative to each other. At this time, the relative position of the first frame unit and the second frame unit is locked. When the first pushing member is moved in the opposite direction and the side wall of the second frame unit is released, the first frame unit and the second frame unit unlock each other and can slide relative to each other. Therefore, the first pushing member can press against any position on the side wall of the second frame unit, thereby realizing stepless adjustment of the relative position of the first frame unit and the second frame unit to adapt to the installation of door frames of more width specifications, with wide adaptability. This utility model door guardrail includes the aforementioned guardrail frame, ensuring that the door guardrail can adapt to door frames of more width specifications. In addition, a left vertical bar is provided between the upper left connecting seat and the lower left connecting seat for connecting with the door frame, and a right vertical bar is provided between the upper right connecting seat and the lower right connecting seat. By setting the left and right vertical bars, the distance between the upper left connecting seat and the lower left connecting seat, as well as the distance between the upper right connecting seat and the lower right connecting seat, is preset, which can reduce the number of times the user has to find the installation position when installing the upper left connecting seat, the lower left connecting seat, the upper right connecting seat, and the lower right connecting seat, making the installation of the door guardrail more convenient and quick. [Attached Image Description]

[0025] Figure 1 This is one of the perspective views of this utility model;

[0026] Figure 2 This is the second perspective view of this utility model;

[0027] Figure 3 This is a schematic diagram of the present invention installed on a door frame;

[0028] Figure 4 This is an exploded view of the present invention;

[0029] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0030] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0031] Figure 7 This is one of the exploded views of the components of this utility model;

[0032] Figure 8 This is one of the cross-sectional views of a component of this utility model;

[0033] Figure 9 This is the second exploded view of a component of this utility model;

[0034] Figure 10 This is the second sectional view of a component of this utility model;

[0035] Figure 11 This is the third exploded view of the components of this utility model;

[0036] Figure 12 This is the fourth exploded view of the components of this utility model;

[0037] Figure 13 This is a perspective view of a component of this utility model;

[0038] Figure 14 This is the third sectional view of a component of this utility model.

Detailed Implementation Methods

[0039] The present invention will be further described below with reference to the accompanying drawings:

[0040] like Figures 1 to 8As shown, a guardrail 100 includes a first frame unit 11. A second frame unit 12 that can slide relative to the first frame unit 11 is connected to one side of the first frame unit 11. A first pusher 21 that can move relative to the first frame unit 11 is transversely inserted inside the first frame unit 11. When the first pusher 21 moves inward and abuts against the side wall of the second frame unit 12, the relative position of the first frame unit 11 and the second frame unit 12 is locked. When the first pusher 21 moves outward and releases the side wall of the second frame unit 12, the first frame unit 11 and the second frame unit 12 are unlocked and can slide relative to each other. When the first frame unit 11 and the second frame unit 12 slide relative to each other to the desired position, the first pushing member 21 is moved and pressed against the side wall of the second frame unit 12. Because the side wall of the second frame unit 12 is pressed against by the first pushing member 21, the second frame unit 12 and the first frame unit 11 cannot slide relative to each other, thus locking their relative positions. When the first pushing member 21 is moved in the opposite direction to release the side wall of the second frame unit 12, the first frame unit 11 and the second frame unit 12 unlock and can slide relative to each other, thereby adjusting the length of the guardrail 100 to accommodate the width of the door frame 200 for installation. Therefore, the first pushing member 21 can press against any position on the side wall of the second frame unit 12, thereby achieving continuous adjustment and locking of the relative positions of the first frame unit 11 and the second frame unit 12, adapting to door frames of more widths and offering wide adaptability.

[0041] like Figure 4 As shown, the first frame unit 11 includes a first upper horizontal bar 111 and a first lower horizontal bar 112 arranged at intervals, and multiple vertical first vertical bars 113 are provided between the first upper horizontal bar 111 and the first lower horizontal bar 112; the second frame unit 12 includes a second upper horizontal bar 121 and a second lower horizontal bar 122 arranged at intervals, and multiple vertical second vertical bars 123 are provided between the second upper horizontal bar 121 and the second lower horizontal bar 122.

[0042] like Figures 1 to 5 As shown, at least one first connector 31 is fixedly provided on the first frame unit 11. The first connector 31 includes a horizontal piece 313 and a first side piece 311 connected to one side of the horizontal piece 313 and bent relative to the horizontal piece 313. The horizontal piece 313 is fixedly connected to the first frame unit 11. The first side piece 311 and the first frame unit 11 form a first sliding groove 41 for the second frame unit 12 to slide within.

[0043] like Figures 1 to 4As shown, in order to ensure that the first frame unit 11 and the second frame unit 12 are securely locked together and slide smoothly when unlocking each other, there are two first connecting members 31, one of which is set on the first upper crossbar 111 and the other is set on the first lower crossbar 112. The first groove 41 on the upper first connecting member 31 opens downward and the first groove 41 on the lower first connecting member 31 opens upward. The two first connecting members 31 form a clamping shape for the second frame unit 12 and allow the second frame unit 12 to slide within the two first grooves 41.

[0044] like Figure 5 , Figure 7 and Figure 8 As shown, a molded plunger 51 is also connected to the first upper crossbar 111. The plunger 51 has an opening groove 52, which divides the plunger 51 into an inner plug portion 53 and an outer plug portion 54. The first upper crossbar 111 has a tubular structure, and the tube wall of the first upper crossbar 111 is inserted into the opening groove 52, so that the inner plug portion 53 is located inside the first upper crossbar 111 and the outer plug portion 54 is located outside the first upper crossbar 111. The inner sidewall of the cross piece 313 abuts against the outer plug portion 54. Fasteners 55 are inserted between the cross piece 313, the outer plug portion 54, and the first upper crossbar 111 to fix the three together. The injection-molded outer plug portion 54 is provided between the cross piece 313 and the first upper crossbar 111. By utilizing the deformability of the plastic material, the first connector 31 and the first frame unit 11 can be firmly connected. Furthermore, the plunger 51 and the first upper crossbar 111 are connected by a plug-in joint and locked by a fastener 55, ensuring a secure connection. The fastener 55 can be a screw or other connecting component.

[0045] like Figure 5 , Figure 7 and Figure 8 As shown, the first groove 41 is further provided with an injection-molded plastic sleeve 314 fixed relative to the transverse piece 313. The plastic sleeve 314 has a U-shaped longitudinal section and is fitted onto the second frame unit 12 from top to bottom. When the first pusher 21 moves relative to the first frame unit 11 and pushes, the first pusher 21 pushes the plastic sleeve 314 to deform, causing the plastic sleeve 314 to clamp and position the second frame unit 12. The plastic sleeve 314 avoids the first pusher 21 directly pressing against the side wall of the second frame unit 12, which would cause the side wall of the second frame unit 12 to be uneven, thus avoiding the problem of poor sliding caused by the aforementioned unevenness. When the first pusher 21 pushes the plastic sleeve 314, the elastic deformation clamping function of the plastic sleeve 314 is used to lock the second frame unit 12 without damaging the flatness of the side wall of the second frame unit 12. After the first pusher 21 is released, the plastic sleeve 314 releases the second frame unit 12, and the second frame unit 12 can slide back and forth.

[0046] like Figure 5 and Figure 7 As shown, the plastic sleeve 314 has upwardly extending extensions 315 at both ends, and the horizontal piece 313 is inserted between the two extensions 315 so that the plastic sleeve 314 and the horizontal piece 313 are relatively fixed.

[0047] like Figure 5 , Figure 7 and Figure 8 As shown, the other side of the horizontal piece 313 is provided with a second side piece 312 that is bent relative to it. The second side piece 312 abuts against the side of the first upper horizontal bar 111. The first pushing member 21 is a screw. A nut 56 that mates with the screw is fixed inside the inner plug portion 53. The second side piece 312 has a through hole 316 for the first pushing member 21 to be exposed. The first upper horizontal bar 111 has a through hole 114 for the first pushing member 21 to pass through. When the screw is rotated clockwise, it moves inward in cooperation with the nut 56, passes through the through hole 114 and pushes the plastic sleeve 314, thereby locking the second frame unit 12. When rotated counterclockwise, the screw moves outward and loosens the plastic sleeve 314, so that the second frame unit 12 can slide relative to it.

[0048] like Figures 1 to 4As shown, to further ensure that the first frame unit 11 and the second frame unit 12 are firmly locked and slide smoothly after unlocking each other, the second frame unit 12 is provided with at least one second connector 32. The second connector 32 is provided with a second sliding groove 42 that allows the first frame unit 11 to slide inside. A second pusher 22 that can move relative to the second frame unit 12 is transversely inserted through the second frame unit 12. When the second pusher 22 abuts against the side wall of the first frame unit 11, the relative position of the second frame unit 12 and the first frame unit 11 is locked. When the second pusher 22 releases the side wall of the first frame unit 11 and the first pusher 21 releases the side wall of the second frame unit 12, the second frame unit 12 and the first frame unit 11 unlock each other and can slide relative to each other. Therefore, when the first frame unit 11 and the second frame unit 12 are locked together, both the first pushing member 21 and the second pushing member 22 are pressed inward. When it is necessary for the first frame unit 11 and the second frame unit 12 to slide against each other, the first pushing member 21 and the second pushing member 22 can be released. Specifically, in this embodiment, there are two second connecting members 32, one of which is disposed on the second upper crossbar 121 and the other is disposed on the second lower crossbar 122. The second sliding groove 42 on the upper second connecting member 32 opens downward, and the second sliding groove 42 on the lower second connecting member 32 opens upward. The two second connecting members 32 form a clamping shape for the first frame unit 11 and allow the first frame unit 11 to slide within the two second sliding grooves 42. The specific structure of the second connecting member 32 and its connection structure with the second frame unit 12 can adopt the same structure as the first connecting member 31, and will not be described in detail here.

[0049] like Figures 1 to 14As shown, a door guardrail includes a left fixing bracket 62 and a right fixing bracket 61 that can be fixed to a door frame 200. A guardrail frame 100 as described above is provided between the left fixing bracket 62 and the right fixing bracket 61. The length of the guardrail frame 100 can be freely adjusted according to the width of the door frame 200 to adapt to the installation width of the door frame 200, making the door guardrail more adaptable. The right fixing frame 61 includes a right vertical rod 611, with an upper right connecting seat 612 at the upper end and a lower right connecting seat 613 at the lower end. The first frame unit 11 has a first upper connecting seat 115 rotatably connected to the upper right connecting seat 612 and a first lower connecting seat 116 rotatably connected to the lower right connecting seat 613. The left fixing frame 62 includes a left vertical rod 621, with an upper left connecting seat 622 at the upper end and a lower left connecting seat 623 at the lower end. The second frame unit 12 has an upper locking seat 125, with a first locking structure 71 between the upper locking seat 125 and the upper left connecting seat 622 capable of locking the two. The lower part of the second frame unit 12 also has a lower locking seat 126, with a second locking structure 72 between the lower locking seat 126 and the lower left connecting seat 623. A left vertical rod 621 is provided between the upper left connecting seat 622 and the lower left connecting seat 623, and a right vertical rod 611 is provided between the upper right connecting seat 612 and the lower right connecting seat 613. The placement of the left and right vertical rods 621 and 611 pre-sets the distances between the upper left and lower left connecting seats 622 and 623, and between the upper right and lower right connecting seats 612 and 613. This reduces the number of times users need to find the installation positions when installing these connecting seats, making the installation of the gate railing more convenient and faster. Furthermore, when the railing frame 100 is closed, the first locking structure 71 and the second locking structure 72 can lock the railing frame 100 in the closed state, preventing it from opening and ensuring safety. To open the railing frame 100, the first locking structure 71 and the second locking structure 72 are unlocked, and then the railing frame 100 can be rotated to open.

[0050] like Figure 4 , Figure 6 , Figure 9 as well as Figures 12 to 14As shown, the upper right connecting seat 612 includes an upper right seat body 6121 detachably connected to the upper end of the right vertical rod 611. The upper right seat body 6121 has an upper right connecting hole 6122 for fixing it to the door frame 200. The lower right connecting seat 613 has a lower right connecting hole 614 for fixing it to the door frame 200. The lower right connecting seat 613 also has a vertical hole 615. The first lower connecting seat 116 has a vertical column 117 that can rotate and move up and down within the vertical hole 615. The upper left connecting seat 622 has an upper left connecting hole 624 for fixing it to the door frame 200. The lower left connecting seat 623 has a lower left connecting hole 625 for fixing it to the door frame 200. In actual installation, the connection with the door frame 200 can be achieved by inserting screws into the lower right connection hole 614, upper right connection hole 6122, upper left connection hole 624, and lower left connection hole 625.

[0051] like Figure 6 , Figures 12 to 14As shown, a right connecting body 6123 is detachably connected to the upper right seat 6121. The right connecting body 6123 is sleeved on the upper right seat 6121 and connected by screws 6126. When the screws 6126 are removed, the guardrail frame 100 can be lifted upwards to achieve quick disassembly of the entire guardrail frame 100. The right connecting body 6123 is provided with a connecting post 6124. The first upper connecting seat 115 includes a sleeve 1151 sleeved onto the connecting post 6124. A connecting shaft 1152 rotatably connected to the connecting post 6124 is fixed inside the sleeve 1151. A positioning part 1153 is provided inside the sleeve 1151. The connecting post 6124 is provided with a first positioning groove 81 and a second positioning groove 82 located above the first positioning groove 81. The first positioning groove 81 and the second positioning groove 82 are connected by an inclined surface 83. When the positioning part 1153 engages with the first positioning groove 81, the guardrail frame 100 is in a closed state. When the positioning part 1153 moves to engage with the second positioning groove 82, the guardrail frame 100 is in an open state. The lower end of the connecting shaft 1152 is provided with an outwardly extending step 1154. A first return spring 84 is provided between the step 1154 and the inner top surface 6125 of the right connecting body 6123, which can push the guardrail frame 100 to move downward when the positioning part 1153 disengages from the second positioning groove 82. When the guardrail frame 100 is in the closed state, the positioning part 1153 engages with the first positioning groove 81. When the guardrail frame 100 needs to be opened, the first locking structure 71 and the second locking structure 72 are unlocked first, and then the guardrail frame 100 is rotated. The positioning part 1153 moves upward along the inclined plane 83, and the entire guardrail frame 100 rises. When the positioning part 1153 engages with the second positioning groove 82, the guardrail frame 100 stops at a higher position and is positioned, thus maintaining the open state of the guardrail frame 100. At this time, the first return spring 84 is compressed. When the guardrail frame 100 needs to be closed, the guardrail frame 100 is rotated, causing the positioning part 1153 to disengage from the second positioning groove 82. Under the action of the first return spring 84, the guardrail frame 100 descends while rotating until the first locking structure 71 and the second locking structure 72 engage again.

[0052] like Figure 10 and Figure 11As shown, the first locking structure 71 includes a locking hole 711 on the upper left connecting seat 622. The upper locking seat 125 contains a locking block 712 that can slide within it and engage or disengage from the locking hole 711. The locking block 712 has a first inclined surface 713. The upper side of the upper locking seat 125 has a button 714 that, when pressed, pushes against the first inclined surface 713 to disengage the locking block 712 from the locking hole 711. A second return spring 715 is provided between the upper locking seat 125 and the locking block 712 to push the locking block 712 back to its original position. A push button 714 is provided between the upper locking seat 125 and the button 714. The upper locking seat 125 has a third return spring 716 for resetting. A rotating block 717 that can rotate relative to the upper locking seat 125 is provided on its lower side. The rotating block 717 can stop in two positions: a locking position and an unlocking position. When the rotating block 717 stops in the locking position, the abutment rod 718 on the rotating block 717 abuts against the locking block 712 to prevent the locking block 712 from disengaging from the locking hole 711. When the rotating block 717 rotates to the unlocking position, the abutment rod 718 disengages from the locking block 712, making room for the locking block 712 to disengage from the locking hole 711. The upper locking seat 125 has a fourth return spring 719 that can push the rotating block 717 to reset. The second locking structure 72 includes a locking groove 721 on the lower left connecting seat 623. A locking block 722 that can engage or disengage from the locking groove 721 is slidably provided in the lower locking seat 126. A fifth return spring 723 that can push the locking block 722 to reset is provided between the locking block 722 and the lower locking seat 126. A second inclined surface 724 that can push the locking block 722 out of the locking groove 721 when the first locking structure 71 is unlocked and the guardrail frame 100 is lifted is provided in the locking groove 721. A third inclined surface 725 that can squeeze the locking block 722 to slide into the lower locking seat 126 when the guardrail frame 100 is rotated and closed is provided on the lower left connecting seat 623.

[0053] like Figures 9 to 11As shown, when the guardrail frame 100 needs to be opened, the rotating block 717 is rotated first so that the abutment rod 718 is no longer opposite the locking block 712, making room for the movement of the locking block 712. Then, the button 714 is pressed, and the button 714 pushes the locking block 712 to disengage from the locking hole. At this time, the first locking structure 71 is unlocked. Then, the guardrail frame 100 is rotated. During the rotation, the guardrail frame 100 rises along the inclined surface 83. During this process, the second inclined surface 724 pushes the locking block 722 to retract into the lower locking seat 126 so that the locking block 722 exits from the locking groove 721. At this time, the second locking structure 72 is also unlocked until the guardrail frame 100 rotates and rises to the position where the positioning part 1153 and the second positioning groove 82 are engaged. The open state of the guardrail frame 100 is maintained. When it is necessary to close the guardrail frame 100, simply lift the guardrail frame 100 and rotate it to disengage the positioning part 1153 from the second positioning groove 82. At this time, under the action of the first return spring 84, the guardrail frame 100 rotates and descends. During the rotation, the locking block 722 contacts and is pressed against the third inclined surface 725, and the locking block 712 contacts and is pressed against the fourth inclined surface 710. Until the locking block 722 is aligned with the locking groove 721 and the locking block 712 is aligned with the locking hole 711, the fifth return spring 723 and the second return spring 715 respectively push the locking block 722 and the locking block 712 to reset, thereby achieving re-engagement.

[0054] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A guardrail frame (100), characterized in that: The system includes a first frame unit (11), one side of which is connected to a second frame unit (12) that can slide relative to it. A first pusher (21) that can move relative to it is transversely inserted inside the first frame unit (11). When the first pusher (21) moves inward and abuts against the side wall of the second frame unit (12), the relative positions of the first frame unit (11) and the second frame unit (12) are locked. When the first pusher (21) moves outward and releases the side wall of the second frame unit (12), the first frame unit (11) and the second frame unit (12) unlock each other and can slide relative to each other.

2. The guardrail frame according to claim 1, characterized in that: The first pusher (21) is a screw and is connected to the first frame unit (11) by a thread.

3. The guardrail frame according to claim 1, characterized in that: The first frame unit (11) includes a first upper horizontal bar (111) and a first lower horizontal bar (112) spaced apart vertically. Multiple vertical first vertical bars (113) are provided between the first upper horizontal bar (111) and the first lower horizontal bar (112). At least one first connector (31) is fixedly provided on the first frame unit (11). The first connector (31) includes a horizontal piece (313) and a first side piece (311) connected to one side of the horizontal piece (313) and bent relative to the horizontal piece (313). The horizontal piece (313) is fixedly connected to the first frame unit (11). The first side piece (311) and the first frame unit (11) form a first sliding groove (41) for the second frame unit (12) to slide inside.

4. The guardrail frame according to claim 3, characterized in that: There are two first connectors (31), one of which is set on the first upper crossbar (111) and the other is set on the first lower crossbar (112). The first groove (41) on the upper first connector (31) opens downward and the first groove (41) on the lower first connector (31) opens upward. The two first connectors (31) form a clamping shape for the second frame unit (12) and allow the second frame unit (12) to slide in the two first grooves (41).

5. The guardrail frame according to claim 3, characterized in that: The first upper crossbar (111) is also connected to an injection-molded plunger (51). The plunger (51) is provided with an opening groove (52). The opening groove (52) divides the plunger (51) into an inner plug part (53) and an outer plug part (54). The first upper crossbar (111) has a tubular structure. The tube wall of the first upper crossbar (111) is inserted into the opening groove (52) so that the inner plug part (53) is located inside the first upper crossbar (111) and the outer plug part (54) is located outside the first upper crossbar (111). The inner sidewall of the cross piece (313) abuts against the outer plug part (54). Fasteners (55) are provided to fix the cross piece (313), the outer plug part (54) and the first upper crossbar (111).

6. The guardrail frame according to claim 5, characterized in that: The first groove (41) is also provided with a plastic sleeve (314) that is injection molded and fixed relative to the cross piece (313). The plastic sleeve (314) has a U-shaped longitudinal section and is fitted onto the second frame unit (12) from top to bottom. When the first pusher (21) moves relative to the first frame unit (11) and pushes, the first pusher (21) pushes the plastic sleeve (314) to deform, so that the plastic sleeve (314) clamps and positions the second frame unit (12).

7. The guardrail frame according to claim 6, characterized in that: The plastic sleeve (314) has upwardly extending extensions (315) at both ends, and the horizontal piece (313) is inserted between the two extensions (315) so that the plastic sleeve (314) and the horizontal piece (313) are relatively fixed.

8. The guardrail frame according to claim 5, characterized in that: The other side of the horizontal piece (313) is provided with a second side piece (312) that is bent relative to it. The second side piece (312) is attached to the side of the first upper horizontal bar (111). The first push member (21) is a screw. The inner plug (53) is fixed with a nut (56) that cooperates with the screw. The second side piece (312) is provided with a through hole (316) for the first push member (21) to be exposed. The first upper horizontal bar (111) is provided with a through hole (114) for the first push member (21) to pass through.

9. The guardrail frame according to claim 1, characterized in that: The second frame unit (12) is provided with a second connector (32), and the second connector (32) is provided with a second sliding groove (42) in which the first frame unit (11) can slide. The second frame unit (12) is provided with a second pusher (22) that can move relative to it. When the second pusher (22) abuts against the side wall of the first frame unit (11), the relative position of the second frame unit (12) and the first frame unit (11) is locked. When the second pusher (22) releases the side wall of the first frame unit (11) and the first pusher (21) releases the side wall of the second frame unit (12), the second frame unit (12) and the first frame unit (11) unlock each other, allowing them to slide relative to each other. The second frame unit (12) includes a second upper horizontal bar (121) and a second lower horizontal bar (122) arranged at intervals. Multiple vertical second vertical bars (123) are provided between the second upper horizontal bar (121) and the second lower horizontal bar (122). There are two second connectors (32), one of which is set on the second upper horizontal bar (121) and the other is set on the second lower horizontal bar (122). The second groove (42) on the upper second connector (32) opens downward and the second groove (42) on the lower second connector (32) opens upward. The two second connectors (32) form a clamping shape for the first frame unit (11) and allow the first frame unit (11) to slide in the two second grooves (42).

10. A door guardrail, characterized in that: The system includes a right fixing bracket (61) and a left fixing bracket (62) that can be fixed to a door frame (200). A guardrail frame (100) as described in any one of claims 1 to 9 is provided between the right fixing bracket (61) and the left fixing bracket (62). The right fixing bracket (61) includes a right vertical rod (611). The upper end of the right vertical rod (611) is provided with a right upper connecting seat (612), and the lower end of the right vertical rod (611) is provided with a right lower connecting seat (613). The first frame unit (11) is provided with a first upper connecting seat (115) that is rotatably connected to the right upper connecting seat (612). The first frame unit (11) is also provided with a connecting seat to the right lower connecting seat (613). The first lower connecting seat (116) is rotatably connected; the left fixed frame (62) includes a left vertical rod (621), the upper end of the left vertical rod (621) is provided with a left upper connecting seat (622), the lower end of the left vertical rod (621) is provided with a left lower connecting seat (623), the second frame unit (12) is provided with an upper locking seat (125), the upper locking seat (125) and the left upper connecting seat (622) are provided with a first locking structure (71) that can lock the two, the lower part of the second frame unit (12) is also provided with a lower locking seat (126), the lower locking seat (126) and the left lower connecting seat (623) are provided with a second locking structure (72).

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