CN211748308U - Bed guardrail - Google Patents

Abstract

The utility model belongs to the technical field of bed guardrail, in particular to bed guardrail, this structure application is on bed guardrail, including two side posts and the presser foot of connection below the side post that are located left and right sides, be provided with the litter on the inboard/side post of side post, the activity is provided with the lifter on two litter, the middle part of lifter is provided with the hand (hold), is provided with the button on the hand (hold), the middle part activity of lifter is provided with the bolt, and two bolts set up respectively in the both sides of hand (hold), are provided with actuating mechanism behind button and the bolt, press the button, and actuating mechanism drives two bolts and contracts to the lifter inside; when the bolt is driven by the button, the bolt contracts towards the inside of the lifting rod, the bolt is separated from the side upright post, and the lifting rod can slide up and down on the sliding rod; an object of the utility model is to provide an installation and dismantlement are convenient, easy operation's over-and-under type bed guardrail.

Description

Bed guardrail

Technical Field

The utility model belongs to the technical field of the bed guardrail, in particular to bed guardrail.

Background

With the continuous improvement of living standard of people, people pay more attention to sleep quality and safety, a protective article, namely a bed guardrail, can be installed at the bedside and is fixedly arranged on the bedside, so that bed users, such as infants and children, can be effectively prevented from carelessly falling down from the bed, and bed articles can be prevented from falling off from the bedside, the product application is wide, the traditional bed guardrail is enclosed by upright rods and is installed by screws, and the disassembly and maintenance are troublesome.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide an over-and-under type bed guardrail which is convenient to install and disassemble and simple to operate.

The purpose of the utility model is realized like this:

a bed guardrail comprises two side columns positioned at the left side and the right side and a presser foot connected below the side columns, wherein slide rods are arranged on the inner sides/side columns of the side columns, lifting rods are movably arranged on the two slide rods, a handle is arranged in the middle of each lifting rod, a button is arranged on each handle, bolts are movably arranged in the lifting rods, the two bolts are respectively arranged at the two sides of the handle,

a driving mechanism is arranged between the button and the bolts, the button is pressed, the driving mechanism drives the two bolts to contract towards the inside of the lifting rod,

under the condition that the bolt is not driven by the button, the bolt extends out of the lifting rod and can be pinned on the side upright post; when the bolt is driven by the button, the bolt contracts towards the inside of the lifting rod, the bolt is separated from the side upright post, and the lifting rod can slide up and down on the sliding rod.

The lifting rod comprises a left rod body and a right rod body, the handle is arranged between the left rod body and the right rod body, one end of the left rod body is a left sliding block, the other end of the left rod body is a left locking piece, one end of a bolt is connected to the left locking piece, the other end of the bolt penetrates through the left sliding block and is exposed outside, and the left sliding block is arranged on the sliding rod in a sliding mode; one end of the right rod body is a right sliding block, the other end of the right rod body is a right locking piece, one end of a bolt is connected to the right locking piece, the other end of the bolt penetrates through the right sliding block and is exposed outside, and the right sliding block is arranged on the sliding rod in a sliding mode.

The left sliding block is fixedly arranged on the left rod body, the left locking piece is movably arranged in the left rod body, a left spring is arranged in the left rod body, one end of the left spring abuts against the left locking piece, the other end of the left spring abuts against the left rod body, and the left spring gives a force for the bolt to extend out of the left sliding block; the right slider sets firmly on the right body of rod, the activity of right locking piece sets up in the right body of rod, is provided with right spring in the right body of rod, and right spring one end supports and leans on right locking piece, and the other end supports and leans on the right body of rod, and right spring gives the bolt and stretches out the power of right slider.

The driving mechanism comprises a button and a locking shaft, a transverse notch is formed in the left rod body, the locking shaft is fixedly arranged on the left locking piece, two ends of the locking shaft extend out of the transverse notch, and the transverse moving range of the left locking piece is limited under the action of the locking shaft; the right rod body is also provided with a transverse notch, the right locking piece is also fixedly provided with a locking shaft, two ends of the locking shaft extend out of the transverse notch, and the transverse moving range of the right locking piece is limited under the action of the locking shaft; the button is provided with the slant notch, the slant notch with the both ends adaptation that stretches out of locking axle presses the button, and left and right locking piece carries out lateral shifting and realizes that the bolt is to the left body of rod and the right body of rod internal contraction under the effect of slant notch.

The upper end of the oblique notch is provided with an opening.

The left rod body and the right rod body are internally provided with elastic buckles, the elastic buckle extends out of the left rod body and the right rod body, the handle is provided with a hole site matched with the extending end of the elastic buckle, and when the left rod body and/or the right rod body extend into the handle, the extending end of the elastic buckle is locked on the hole site.

The safety piece is arranged between the button and the handle, the safety piece is arranged on the handle, and the button can be driven only when the safety piece is pressed down.

The button is provided with a longitudinal notch, two ends of the longitudinal notch are provided with large openings, the safety piece extends out of the support shaft, the end part of the support shaft extends out of a large-diameter end, the large-diameter end can move in the large opening but cannot enter the longitudinal notch, the support shaft can move in the large opening and the longitudinal notch, the support shaft is sleeved with a spring, one end of the spring is abutted against the safety piece, one end of the spring is abutted against the button, the spring gives the outward movement force to the safety piece and enables the large-diameter end to be located in the large opening

The big opening of the upper end of the longitudinal notch is open.

Longitudinal through holes are formed in the side edges of the left sliding block and the right sliding block, and lifting rods are sleeved in the longitudinal through holes.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses need drive insurance piece earlier, after the big footpath end of insurance piece breaks away from big opening, the user drives the hand (hold) and goes up the button again, and the button can drive two bolts and to the inside shrink of lifter, separates between bolt and the side pillar, and the lifter can slide from top to bottom on the litter to the user realizes the lift of the lifter of bed guardrail. The safety piece and the button are arranged on the handle, so that a user can operate the safety piece and the button with one hand, when the user holds the handle, the user firstly presses the safety piece and then presses the button with fingers, and certainly, the safety piece and the button can be operated separately, wherein one hand firstly drives the safety piece, and then the other hand drives the button. The actual operation mode varies from person to person, and both operation modes are possible. The user only needs to operate on the handle to realize the lifting of the lifting rod of the bed guardrail, and the operation is simple.

2. The utility model discloses a lifter divide into the left body of rod and the right body of rod, is provided with between the left and right body of rod the hand (hold). When the user assembles, only one end of the left locking piece of the left rod body and one end of the right locking piece of the right rod body need to be inserted into the handle, and when the elastic buckles in the left rod body and the right rod body are fastened on the handle, the lifting rod is assembled in place. The two ends of the lifting rod can be sleeved on the sliding rod only by the longitudinal through holes at the side edges of the left sliding block and the right sliding block. The installation is simple, need not supporting instrument.

3. The utility model discloses a do not have the spring in the hand (hold), utilize the spring of the interior reset bolt of the left and right body of rod to control, the structure is more simplified. The utility model discloses set up actuating mechanism's core part button and locking axle respectively on two different spare parts, the button sets up on the hand (hold), the locking axle sets firmly on left locking piece and have the locking piece spare and mobile establishing in left body of rod and right body of rod, for avoiding both interference in the assembly, the upper end of slant notch is the opening, the opening realizes button and locking axle separation and cooperation between them, guarantee the stability of structure, simplify spare part, optimize the cooperation relation, it is simpler to let the structure.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is a second schematic structural diagram of the present invention;

fig. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is an enlarged schematic view of FIG. 3 at B;

fig. 6 is one of the schematic views of the explosion structure of the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 6 at C;

FIG. 8 is an enlarged schematic view of FIG. 6 at D;

fig. 9 is a second schematic diagram of the explosion structure of the present invention;

FIG. 10 is an enlarged view of the structure of FIG. 9 at E;

FIG. 11 is an enlarged view of the structure of FIG. 9 at F;

FIG. 12 is an enlarged view of the structure of FIG. 9 at G;

FIG. 13 is a schematic view of the safety member of the present invention;

fig. 14 is a second schematic structural view of the safety device of the present invention.

The reference numbers in the figures mean:

1-side upright post; 10-a connecting rod; 11-a limiting hole; 2-presser foot; 3-a slide rod; 4-a lifting rod; 41-left rod body;

411-left rod lateral notch; 42-right rod body; 421-right rod body transverse notch; 51-a handle; 52-a button; 521-oblique notches; 522-longitudinal slot; 523-large opening; 53-a fuse; 531-fulcrum;

532-large diameter end; 61-left slider; 611-left slider mount; 612-left slider slide;

613-left slider longitudinal through hole; 62-a bolt; 63-left locking piece; 64-left spring; 71-right slider;

711-right slider mount; 712-right slider slide; 73-right locking piece; 74-right spring; 8-locking the shaft; 81-positioning the shaft; 9-elastic buckling; 91-extending end of elastic buckle.

Detailed Description

The invention will be further described in the following with reference to the accompanying drawings in which:

referring to fig. 1 to 12, a bed fence comprises two side columns 1 at the left and right sides and a presser foot 2 connected below the side columns 1, wherein a slide rod 3 is arranged on the inner side/side column 1 of the side column 1, preferably a slide rod 3 is arranged on the inner side of the side column 1 as shown in fig. 1 and 2, two slide rods 3 are movably provided with a lifting rod 4, the middle part of the lifting rod 4 is provided with a handle 51, the handle 51 is provided with a button 52, the inside of the lifting rod 4 is movably provided with a bolt 62, the two bolts 62 are respectively arranged at the two sides of the handle 51 and are actually used as a complete bed guardrail, the lifting rod 4 is also sleeved with a supporting cloth, when the lifting rod 4 is positioned at the uppermost end of the side upright post 1, the support cloth is unfolded to realize shielding, when the lifting rod 4 is positioned at the lowest position, the lifting rod 4 drives the support cloth to realize putting down, and the bed guardrail has no shielding effect; the lifting rod 4 is provided with a supporting cloth which is designed in the prior art, and therefore, the supporting cloth is not marked by the attached drawings.

A driving mechanism is arranged between the button 52 and the bolts 62, and when the button 52 is pressed, the driving mechanism drives the two bolts 62 to contract towards the inside of the lifting rod 4,

under the condition that the bolt 62 is not driven by the button 52, the bolt 62 extends out of the lifting rod 4 and can be pinned on the side upright 1; when the latch 62 is driven by the button 52, the latch 62 is retracted into the lifter 4, the latch 62 is separated from the side post 1, and the lifter 4 can slide up and down on the slide bar 3.

The lifting rod 4 comprises a left rod body 41 and a right rod body 42, the handle 51 is arranged between the left rod body 41 and the right rod body 42, one end of the left rod body 41 is a left sliding block 61, the other end of the left rod body 41 is a left locking piece 63, one end of a bolt 62 is connected to the left locking piece 63, the other end of the bolt 62 penetrates through the left sliding block 61 and is exposed outside, and the left sliding block 61 is arranged on the sliding rod 3 in a sliding mode; one end of the right rod body 42 is a right sliding block 71, the other end of the right rod body 42 is a right locking piece 73, one end of a bolt 62 is connected to the right locking piece 73, the other end of the bolt 62 penetrates through the right sliding block 71 and is exposed outside, and the right sliding block 71 is arranged on the slide rod 3 in a sliding mode.

The left sliding block 61 is fixedly arranged on the left rod body 41, the left locking piece 63 is movably arranged in the left rod body 41, a left spring 64 is arranged in the left rod body 41, one end of the left spring 64 abuts against the left locking piece 63, the other end of the left spring abuts against the left rod body 41, actually, a positioning shaft 81 is fixedly arranged on the left rod body 41, the left spring 64 abuts against the positioning shaft 81, and the left spring 64 gives a force to the bolt 62 to extend out of the left sliding block 61; the right slider 71 is fixedly arranged on the right rod body 42, the right locking piece 73 is movably arranged in the right rod body 42, a right spring 74 is arranged in the right rod body 42, one end of the right spring 74 abuts against the right locking piece 73, the other end of the right spring abuts against the right rod body 42, and the right spring 74 gives a force for the bolt 62 to extend out of the right slider 71. The inner structure of the left rod 41 and the inner structure of the right rod 42 are substantially the same.

The left slider 61 is composed of a left slider fixing part 611 and a left slider sliding part 612 which are detachably connected, the left slider fixing part 611 is fixed with the end part of the left rod body 41, and the left slider sliding part 612 is sleeved on the sliding rod 3; the right slider 71 is composed of a right slider fixing part 711 and a right slider sliding part 712 which are detachably connected, the right slider fixing part 711 is fixed with the end part of the right rod body 42, the right slider sliding part 712 is sleeved on the slide rod 3, and the left slider 61 and the right slider 71 are divided into two parts for more convenient assembly.

The driving mechanism comprises a button 52 and a locking shaft 8, a left rod body transverse notch 411 is formed in the left rod body 41, the locking shaft 8 is fixedly arranged on the left locking piece 63, two ends of the locking shaft 8 extend out of the left rod body transverse notch 411, and under the action of the locking shaft 8, the transverse moving range of the left locking piece 63 is limited; the right rod body 42 is also provided with a right rod body transverse notch 421, the right locking piece 73 is also fixedly provided with a locking shaft 8, two ends of the locking shaft 8 extend out of the right rod body transverse notch 421, and the transverse moving range of the right locking piece 73 is limited under the action of the locking shaft 8; the button 52 is provided with an oblique notch 521, the oblique notch 521 is matched with the two extending ends of the locking shaft 8, the button 3 is pressed, the left and right locking pieces 63 and 73 move transversely under the action of the oblique notch 521, and the bolt 62 is retracted into the left rod body 41 and the right rod body 42.

The utility model discloses set up actuating mechanism's core part button 52 and locking axle 8 respectively on two different spare parts, button 52 sets up on hand (hold) 51, locking axle 8 sets firmly on left locking piece 63 and have locking piece 71 and mobile the establishing in left body of rod 41 and right body of rod 42, for avoiding both interference in the assembly, the upper end of slant notch 521 is the opening, the separation and the cooperation of button 52 and locking axle 8 both are realized to the opening, guarantee the stability of structure, simplify spare part, optimize the cooperation relation, let the structure simpler. The handle 51 has no spring, and the spring of the reset bolt 62 in the left and right rod bodies 41 and 42 is used for control, so that the structure is simplified.

The utility model discloses a handle, including left body of rod 41 and right body of rod 42, be provided with the hasp 9 in the left body of rod 41 and the right body of rod 42, in fact for avoiding the hasp 9 and the interference between left locking piece 63 and the right locking piece 73, left locking piece 63 and right locking piece 73 middle part are provided with the dead slot of keeping away, and hasp 9 and left locking piece 63/right locking piece 73 do not touch under the effect of dead slot, as shown in fig. 7, left body of rod 41 and right body of rod 42 are stretched out to hasp 9 part, set up the hole site with the stretch out end adaptation of hasp 9 on the hand (hold) 51, when left body of rod 41 and/or right body of rod 42 stretched into in the hand (hold) 51, the end that stretches.

The components taken by the user are divided into the left rod 41, the right rod 42 and the handle 51, and the left rod 41, the right rod 42 and the handle 51 are assembled. The specific structure is as follows: a left sliding block 61 is fixed at one end of the left rod body 41, a left locking piece 63 is movably arranged at the other end of the left rod body 41, the left locking piece 63 is matched with a transverse notch in the left rod body 41 through a locking shaft 8 for limiting, a bolt 62 is connected to the left locking piece 63, the bolt 62 penetrates through the left sliding block 61 and is exposed outside, a left spring 64 is arranged in the left rod body 41, the bolt 62 is provided with a force stretching out of the left sliding block 61 by the left spring 64, and a positioning elastic buckle 9 is further arranged in the left rod; the right rod body 42 and the left rod body 41 have the same structure; a button 52 is limited on the lower opening of the handle 51, a safety piece 53 is also arranged between the button 52 and the handle 51, and a spring is arranged between the safety piece 53 and the button 52. When the user assembles, only one end of the left locking member of the left rod 41 and one end of the right locking member of the right rod 42 need to be inserted into the handle 51, and when the elastic buckles 9 in the left rod 41 and the right rod 42 are fastened on the handle 51, the assembling of the lifting rod 4 is completed. The two ends of the lifting rod 4 are only required to be sleeved on the slide rod 3 through the longitudinal through holes at the side edges of the left slide block 61 and the right slide block 71. The installation is simple, need not supporting instrument.

A safety member 53 is provided between the button 52 and the handle 51, the safety member 53 being provided on the handle 51, the button 52 being actuatable when the safety member 53 is depressed. The button 52 is provided with a longitudinal notch 522, two ends of the longitudinal notch 522 are provided with large openings 523, the safety member 53 extends out of a fulcrum 531, the end part of the fulcrum 531 extends out of a large-diameter end 532, the large-diameter end 532 can move in the large opening 523 but cannot enter the longitudinal notch 522, the fulcrum 531 can move in the large opening 523 and the longitudinal notch 522, a spring is sleeved outside the fulcrum 531, one end of the spring abuts against the safety member 53, the other end of the spring abuts against the button 52, and the spring gives the outward movement force to the safety member 53 and enables the large-diameter end 532 to be located in the large opening 523. When the user presses the safety piece, the large-diameter end moves inwards to be separated from the restraint of the large opening, the small-diameter end is positioned in the large opening 523 and the longitudinal notch 522, the button can be driven freely, and when the safety piece is released, the safety piece can enter the large opening 523 under the action of the spring to wait for the next operation. The large diameter ends are located in the large openings 523 at both ends of the longitudinal slot 522 to effect a locking retention of the button 52, i.e., to effect a continued retraction and a continued release of the latch 62.

The handle 51 has no spring, and the spring of the reset bolt 62 in the left and right rod bodies 41 and 42 is used for control, so that the structure is simplified. The utility model discloses set up actuating mechanism's core part button 52 and locking axle 8 respectively on two different spare parts, button 52 sets up on hand (hold) 51, locking axle 8 sets firmly on left locking piece 63 and right locking piece 73 and mobile establishment in left body of rod 41 and right body of rod 42, for avoiding both interference in the assembly, the upper end of slant notch 521 is the opening, the separation and the cooperation of button 52 and locking axle 8 both are realized to the opening, guarantee the stability of structure, simplify spare part, optimize the cooperation relation, let the structure simpler vertical through-hole has been seted up to left side slider and right slider side, vertical through-hole endotheca is equipped with the lifter.

The utility model discloses an operating procedure does: the safety piece is driven firstly, after the large-diameter end of the safety piece is separated from the large opening, a user drives the button on the handle, the button can drive the two bolts to shrink towards the inside of the lifting rod, the bolts and the side upright posts are separated, and the lifting rod can slide up and down on the sliding rod, so that the lifting of the lifting rod of the bed guardrail is realized by the user. The safety piece and the button are arranged on the handle, so that a user can operate the safety piece and the button with one hand, when the user holds the handle, the user firstly presses the safety piece and then presses the button with fingers, and certainly, the safety piece and the button can be operated separately, wherein one hand firstly drives the safety piece, and then the other hand drives the button. The actual operation mode is different from person to person, and people with bigger hands can operate with one hand, and people with smaller hands can operate separately, and both operation modes can be used. Just can realize the unblock through twice step, guarantee the safety in utilization, avoid the maloperation, set up respectively in two different position of hand (hold) as preferred insurance spare and button, as shown in fig. 1 and 7, the user only needs to operate the lifter that can realize the bed guardrail on the hand (hold) and goes up and down easy operation.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a bed guardrail, is provided with litter (3) on inboard/side column (1) of side column (1) including two side columns (1) that are located left and right sides and connect presser foot (2) in side column (1) below, and two litter (3) go up the activity and are provided with lifter (4), its characterized in that: a handle (51) is arranged in the middle of the lifting rod (4), a button (52) is arranged on the handle (51), a bolt (62) is movably arranged in the lifting rod (4), the two bolts (62) are respectively arranged on two sides of the handle (51),

a driving mechanism is arranged between the button (52) and the bolts (62), the button (52) is pressed, the driving mechanism drives the two bolts (62) to contract towards the inside of the lifting rod (4),

under the condition that the bolt (62) is not driven by the button (52), the bolt (62) extends out of the lifting rod (4) and can be pinned on the side upright post (1); when the bolt (62) is driven by the button (52), the bolt (62) contracts towards the inside of the lifting rod (4), the bolt (62) is separated from the side upright post (1), and the lifting rod (4) can slide up and down on the slide rod (3).

2. The bed guardrail of claim 1, wherein: the lifting rod (4) comprises a left rod body (41) and a right rod body (42), the handle (51) is arranged between the left rod body and the right rod body (41,42), one end of the left rod body (41) is provided with a left sliding block (61), the other end of the left rod body (41) is provided with a left locking piece (63), one end of a bolt (62) is connected onto the left locking piece (63), the other end of the bolt (62) penetrates through the left sliding block (61) and is exposed outside, and the left sliding block (61) is arranged on the sliding rod (3) in a sliding mode; one end of the right rod body (42) is a right sliding block (71), the other end of the right rod body (42) is a right locking piece (73), one end of a bolt (62) is connected to the right locking piece (73), the other end of the bolt (62) penetrates through the right sliding block (71) and is exposed outside, and the right sliding block (71) is arranged on the sliding rod (3) in a sliding mode.

3. The bed guardrail of claim 2, wherein: the left sliding block (61) is fixedly arranged on the left rod body (41), the left locking piece (63) is movably arranged in the left rod body (41), a left spring (64) is arranged in the left rod body (41), one end of the left spring (64) abuts against the left locking piece (63), the other end of the left spring (64) abuts against the left rod body (41), and the left spring (64) gives a force to the bolt (62) to extend out of the left sliding block (61); the right slider (71) is fixedly arranged on the right rod body (42), the right locking piece (73) is movably arranged in the right rod body (42), a right spring (74) is arranged in the right rod body (42), one end of the right spring (74) abuts against the right locking piece (73), the other end of the right spring (74) abuts against the right rod body (42), and the right spring (74) gives the force of the bolt (62) stretching out of the right slider (71).

4. The bed guardrail of claim 2 or 3, wherein: the driving mechanism comprises a button (52) and a locking shaft (8), a transverse notch is formed in the left rod body (41), the locking shaft (8) is fixedly arranged on the left locking piece (63), two ends of the locking shaft (8) extend out of the transverse notch, and under the action of the locking shaft (8), the transverse moving range of the left locking piece (63) is limited; a transverse notch is also formed in the right rod body (42), a locking shaft (8) is also fixedly arranged on the right locking piece (73), two ends of the locking shaft (8) extend out of the transverse notch, and the transverse moving range of the right locking piece (73) is limited under the action of the locking shaft (8); the button (52) is provided with an oblique notch (521), the oblique notch (521) is matched with the two extending ends of the locking shaft (8), the button (52) is pressed, the left locking piece (63) and the right locking piece (73) move transversely under the action of the oblique notch (521), and the bolt (62) is retracted into the left rod body (41) and the right rod body (42).

5. The bed guardrail of claim 4, wherein: the upper end of the oblique notch (521) is an opening.

6. The bed guardrail of claim 2 or 3, wherein: be provided with in the left side body of rod (41) and the right side body of rod (42) bullet and detain (9), bullet detain (9) part and stretch out left side body of rod (41) and the right side body of rod (42), set up the hole site of detaining the end adaptation with stretching out of bullet knot (9) on hand (51), when the left side body of rod (41) and/or the right side body of rod (42) stretch into hand (51) in, the end that stretches out of bullet knot (9) locks on the hole site.

7. The bed guardrail of claim 1, wherein: a safety piece (53) is arranged between the button (52) and the handle (51), the safety piece (53) is arranged on the handle (51), and the button (52) can be driven only when the safety piece (53) is pressed.

8. The bed guardrail of claim 7, wherein: the button (52) is provided with a longitudinal notch (522), two ends of the longitudinal notch (522) are provided with a large opening (523), the safety piece (53) extends out of the fulcrum shaft (531), the end part of the fulcrum shaft (531) extends out of a large-diameter end (532), the large-diameter end (532) can move in the large opening (523) but cannot enter the longitudinal notch (522), the fulcrum shaft (531) can move in the large opening (523) and the longitudinal notch (522), the fulcrum shaft (531) is externally sleeved with a spring, one end of the spring is abutted against the safety piece (53), one end of the spring is abutted against the button (52), and the spring gives the outward movement force to the safety piece (53) and enables the large-diameter end (532) to be positioned in the large opening (523).

9. The bed guardrail of claim 8, wherein: the large opening (523) at the upper end of the longitudinal notch (522) is open.

10. The bed guardrail of claim 2, wherein: longitudinal through holes are formed in the side edges of the left sliding block (61) and the right sliding block (71), and lifting rods (4) are sleeved in the longitudinal through holes.

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