CN214207852U

CN214207852U - Novel use bed guardrail that knob was opened

Info

Publication number: CN214207852U
Application number: CN202022469957.4U
Authority: CN
Inventors: 夏勇
Original assignee: Hangzhou Maizhuo Trading Co Ltd
Current assignee: Hangzhou Maizhuo Trading Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-09-17
Anticipated expiration: 2030-10-30

Abstract

The utility model belongs to the technical field of bed guardrails, in particular to a novel bed guardrail opened by a knob, which comprises a cross rod and a stand column, wherein the cross rod is connected with the stand column in a sliding way, the stand column is provided with a clamping piece and a reset spring, the cross rod is provided with a control handle and a thimble for driving the clamping piece to move, and the control handle is internally provided with a connecting piece connected with the thimble and a knob for controlling the connecting piece to move; be provided with the actuating lever on the knob, and actuating lever and connecting piece are provided with transmission connecting rod, and actuating lever, transmission connecting rod and connecting piece form slider-crank mechanism, and the knob rotates the in-process, and the actuating lever pulls the transmission connecting rod motion to slide in the horizontal pole through transmission connecting rod drive connecting piece and thimble, thereby break away from through the motion of thimble drive joint spare and with the horizontal pole, make horizontal pole and stand relieve the locking, the horizontal pole can slide from top to bottom on the stand, the utility model aims at providing a convenient operation, the high novel bed guardrail of opening of using the knob of security.

Description

Novel use bed guardrail that knob was opened

Technical Field

The utility model belongs to the technical field of bed guardrail/bed rail, refer in particular to a novel bed guardrail that applied knob was opened.

Background

Along with the continuous growth of infant, the nature of infant's lively nature shows gradually, the less crib of area can not satisfy infant's activity and play gradually, but the commonly-used bed in the family does not have the guardrail mostly, when infant's activity or the bed is thoroughly rolled, fall from the bed because of accident easily, cause the injury, the emergence of bed guardrail then has avoided the emergence of this kind of accident for infant's head of a family, the bed guardrail among the prior art can control the perpendicular oscilaltion of horizontal pole mostly according to user's demand, the guardrail of bed on the market mostly sets up elastic clamping spare through the guardrail both ends simultaneously makes horizontal pole and stand joint fixed, and realize the joint and the separation of horizontal pole and stand through the latch device of operating guardrail both ends clamping spare respectively, complex operation is neither convenient.

Disclosure of Invention

The utility model aims at providing a bed guardrail that convenient operation, security are high novel applied knob are opened.

The purpose of the utility model is realized like this:

a novel bed guardrail opened by using a knob comprises a cross rod and a stand column used for supporting the cross rod, wherein the cross rod is connected with the stand column in a sliding manner, a clamping piece and a reset spring used for driving the clamping piece to be clamped and locked with the cross rod are arranged on the stand column in a sliding manner, a control handle and a thimble used for driving the clamping piece to move are arranged on the cross rod, a connecting piece connected with the thimble and a knob used for controlling the connecting piece to move are arranged in the control handle in a sliding manner;

the rotary knob is provided with a driving rod, the driving rod and the connecting piece are provided with a transmission connecting rod, the driving rod, the transmission connecting rod and the connecting piece form a slider-crank mechanism, in the rotary process of the rotary knob, the driving rod pulls the transmission connecting rod to move, the connecting piece and the ejector pin are driven by the transmission connecting rod to slide in the cross rod, the ejector pin drives the clamping piece to move and separate from the cross rod, the cross rod and the stand column are unlocked, and the cross rod can slide up and down on the stand column.

Preferably, the stand columns on two sides of the cross rod are provided with clamping pieces, two sides of the control handle are respectively provided with ejector pins for driving the clamping pieces to move, the control handle is internally provided with connecting pieces respectively connected with the two groups of ejector pins, the driving rod extends towards two sides of the knob to form two connecting parts respectively connected with the two connecting pieces, and the knob drives the two connecting pieces to move through the two connecting parts respectively.

Preferably, the control handle is provided with a mounting hole for mounting the cross rod, the connecting piece is inserted in the mounting hole, the side wall of the mounting hole is provided with a fixing hole, the connecting piece is provided with a positioning button matched with the fixing hole, the positioning button is provided with a third elastic piece for driving the positioning button to be matched with the fixing hole, and the positioning button penetrates through the cross rod and is matched with the fixing hole to enable the cross rod to be relatively fixed with the control handle.

Preferably, the connecting piece comprises a connecting piece body connected with the ejector pin and a connecting seat connected with the telescopic connecting rod, the connecting piece body is arranged in the cross rod in a sliding mode, the connecting seat is movably arranged in the control handle, a first elastic piece is arranged on the cross rod and drives the connecting piece body to abut against the connecting seat, when the cross rod and the control handle are disassembled relatively, the connecting seat is left in the control handle, and the connecting piece body is separated from the control handle along with the cross rod.

Preferably, the connecting piece body is provided with a positioning part, the connecting seat is provided with a positioning groove matched with the positioning part, and the positioning part is arranged in the positioning groove in a penetrating mode.

Preferably, the connecting seat is provided with a limiting rod, and the cross rod is provided with a limiting groove matched with the limiting rod.

Preferably, be provided with the mounting groove on the connecting piece, first elastic component sets up in the mounting groove, and is provided with the setting element on the horizontal pole, and first elastic component drive connecting piece supports tightly on the setting element to make the thimble keep away from joint spare.

Preferably, the knob is provided with a limiting protrusion, the control handle is provided with an arc-shaped groove matched with the limiting protrusion, and the limiting protrusion is matched with the arc-shaped groove to limit the rotation angle of the knob.

Preferably, the stand column is provided with a placement hole, the clamping piece is arranged in the placement hole in a sliding mode, the reset spring is arranged in the placement hole, the clamping piece is provided with a sliding groove, the stand column is provided with a sliding rod, and the sliding rod slides in the sliding groove when the clamping piece moves.

Preferably, the horizontal pole is provided with the connector, and the thimble slides and sets up in the connector, and is provided with on the connector with joint spare complex joint hole, during the use, the thimble is ejecting joint spare from the joint hole, makes horizontal pole and stand release the locking.

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

1. the stand column is provided with the clamping piece in a sliding manner and a reset spring for driving the clamping piece to be clamped and locked with the cross rod, the cross rod is provided with the control handle and the thimble for driving the clamping piece to move, the control handle is internally provided with the connecting piece connected with the thimble in a sliding manner and the knob for controlling the movement of the connecting piece, and the clamping piece cannot lift along with the cross rod in the structure, so that articles such as bed sheets are prevented from being hooked, the use is convenient, and the accidental bending and damage of the clamping piece are avoided; the rotary knob is provided with a driving rod, the driving rod and the connecting piece are provided with a transmission connecting rod, the driving rod, the transmission connecting rod and the connecting piece form a slider-crank mechanism, in the rotary knob rotating process, the driving rod pulls the transmission connecting rod to move, the connecting piece and the ejector pin are driven to slide in the cross rod through the transmission connecting rod, the clamping piece is driven to move through the ejector pin and is separated from the cross rod, the cross rod and the stand column are unlocked, the cross rod can slide up and down on the stand column, the connecting piece is controlled to move through the slider-crank mechanism in the structure, the cross rod is controlled to be fixedly connected with the stand column in a clamped mode, the structure is simple, and the production and installation are convenient.

2. All be provided with joint spare on the stand of horizontal pole both sides, the brake valve lever both sides are provided with the thimble of drive joint spare motion respectively, and be provided with the connecting piece of being connected with two sets of thimbles respectively among the brake valve lever, the actuating lever extends to the knob both sides and forms two connecting portions of being connected with two connecting pieces respectively, the knob drives two connecting piece motions respectively through two connecting portions, make horizontal pole and two sets of stand stable connections through two sets of joint spares in this structure, and only need through a knob control when controlling the horizontal pole and going up and down, the person of facilitating the use controls.

3. The control handle is provided with a mounting hole for mounting the cross rod, the connecting piece is inserted in the mounting hole, the side wall of the mounting hole is provided with a fixed hole, the connecting piece is provided with a positioning button matched with the fixed hole, the positioning button is provided with a third elastic piece for driving the positioning button to be matched with the fixed hole, the positioning button passes through the cross rod and is matched with the fixed hole, so that the cross rod and the control handle are relatively fixed, and the cross rod and the control handle are relatively fixed through the positioning button and the third elastic piece; the connecting piece includes the connecting piece body of being connected with the thimble and the connecting seat of being connected with telescopic link, the connecting piece body slides and sets up in the horizontal pole, the connecting seat activity sets up in brake valve lever, and be provided with first elastic component on the horizontal pole, first elastic component drive connecting piece body supports on the connecting seat, when horizontal pole and brake valve lever are dismantled relatively, the connecting seat is stayed in brake valve lever, the connecting piece body separates with brake valve lever along with the horizontal pole together, bed guardrail dismantles in-process connecting seat and is connected with telescopic link all the time, need not consider the cooperation of connecting seat and telescopic link during the reassembly, be convenient for horizontal pole and brake valve lever recombination installation, be favorable to the quick installation dismantlement of bed guardrail.

4. The connecting piece body of the utility model is provided with the positioning part, the connecting seat is provided with the positioning groove matched with the positioning part, and the positioning part is arranged in the positioning groove in a penetrating way, so that the positioning installation of the connecting piece body and the connecting seat is convenient, and the driving of the connecting seat on the connecting piece body is prevented from being influenced by the relative deflection of the connecting piece body and the connecting seat; the connecting seat is provided with a limiting rod, the cross rod is provided with a limiting groove matched with the limiting rod, the arrangement of the limiting rod and the limiting groove limits the motion range of the connecting seat, reduces the idle work done by a user in the use process and avoids the connecting seat from being separated from the control handle; be provided with the mounting groove on the connecting piece, first elastic component sets up in the mounting groove, and is provided with the setting element on the horizontal pole, and first elastic component drive connecting piece supports tightly on the setting element to make the thimble keep away from joint spare, mounting groove and setting element be provided with and do benefit to and avoid the unexpected drive joint spare of thimble to separate with the horizontal pole, improve the security of bed guardrail.

5. The utility model is characterized in that the knob is provided with a limit bulge, the control handle is provided with an arc-shaped groove matched with the limit bulge, the limit bulge is matched with the arc-shaped groove to limit the rotation angle of the knob, the structure limits the movement distance between the connecting piece and the thimble by limiting the rotation angle of the knob, thereby reducing the useless work in the control process of the bed guardrail and facilitating the use of a user; the vertical column is provided with a placement hole, the clamping piece is slidably arranged in the placement hole, the reset spring is arranged in the placement hole, the clamping piece is provided with a sliding groove, the vertical column is provided with a sliding rod, and the sliding rod slides in the sliding groove when the clamping piece moves; be provided with the connector on the horizontal pole, the thimble slides and sets up in the connector, and be provided with on the connector with joint spare complex joint hole, during the use, the thimble is ejecting with joint spare from the joint hole, makes horizontal pole and stand remove the locking, the stable slip of the thimble of being convenient for of setting up of connector, and the thimble of being convenient for is ejecting with joint spare from the joint hole, thereby avoids thimble and joint spare dislocation to influence thimble drive joint spare motion.

Drawings

Fig. 1 is an exploded schematic view of the present invention;

fig. 2 is one of the cross-sectional views of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a second cross-sectional view of the present invention;

FIG. 5 is a schematic view of the connection structure of the connecting seat and the driving rod of the present invention;

fig. 6 is a schematic structural view of the connector body according to the present invention;

FIG. 7 is a schematic structural view of a control handle according to the present invention;

fig. 8 is a schematic structural diagram of the middle knob of the present invention.

In the figure: 1-a control handle; 2-a connector; 3-a knob; 4-a clamping piece; 5-a first elastic member; 6-a thimble; 7-a cross bar; 8-upright column; 11-an inner tube; 12-a housing; 13-an arc-shaped groove; 14-a fixation hole; 15-a limiting groove; 16-mounting holes; 17-a through hole; 21-a connecting seat; 22-the connector body; 23-mounting grooves; 24-a placement groove; 25-a positioning button; 26-a third elastic member; 31-a drive rod; 32-a drive link; 33-a limit bump; 34-a mounting bar; 35-a limit key; 41-a chute; 51-a positioning element; 61-a connecting rod; 71-a connector; 72-a clamping hole; 73-perforation; 81-a mounting seat; 82-placing holes; 83-a return spring; 84-a slide bar; 211-positioning grooves; 212-hinge slot; 213-a limiting rod; 221-a positioning section; 222-a flexible support;

311-hinge hole; 312-keyway.

Detailed Description

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

referring to fig. 1 to 8, a novel bed guardrail opened by a knob comprises a cross bar 7 and a vertical post 8 for supporting the cross bar 7, wherein the cross bar 7 is connected with the vertical post 8 in a sliding way, the upright post 8 is provided with a clamping piece 4 in a sliding way and a reset spring 83 for driving the clamping piece 4 to be clamped and locked with the cross rod 7, the cross rod 7 is provided with a control handle 1 and a thimble 6 for driving the clamping piece 4 to move, the control handle 1 is internally provided with a connecting piece 2 connected with the thimble 6 in a sliding way and a knob 3 for controlling the connecting piece 2 to move, the clamping piece 4 in the structure can not lift along with the cross rod 7, thereby avoiding hooking articles such as bed sheets and the like, being convenient to use, and be favorable to avoiding the unexpected damage of buckling of joint spare 4, the utility model discloses in be provided with connecting rod 61 between thimble 6 and the connecting piece 2, during the use, connecting piece 2 passes through the motion of connecting rod 61 drive thimble 6.

The knob 3 is provided with a driving rod 31, the driving rod 31 and the connecting piece 2 are provided with a transmission connecting rod 32, the driving rod 31, the transmission connecting rod 32 and the connecting piece 2 form a slider-crank mechanism, in the rotation process of the knob 3, the driving rod 31 pulls the transmission connecting rod 32 to move, the connecting piece 2 and the ejector pin 6 are driven to slide in the cross rod 7 through the transmission connecting rod 32, the ejector pin 6 drives the clamping piece 4 to move and separate from the cross rod 7, the cross rod 7 and the stand column 8 are unlocked, the cross rod 7 can slide up and down on the stand column 8, the connecting piece 2 is controlled to move through the slider-crank mechanism in the structure, and the cross rod 7 and the stand column 8 are clamped and fixed.

In this embodiment, the knob 3 is provided with the mounting rod 34, the driving rod 31 is provided with a hinge hole 311 connected to the mounting rod 34, a key groove 312 is formed in a side wall of the hinge hole 311, the mounting rod 34 is provided with a limit key 35, and the limit key 35 is matched with the key groove 312 to fix the knob 3 and the transmission member relatively.

Be provided with hinge groove 212 on the connecting piece 2, transmission connecting rod 32 one end is rotated and is set up in hinge groove 212, and during the use, hinge groove 212 restriction transmission connecting rod 32's turned angle, this structure is through the turned angle restriction mount pad 81 of restriction transmission connecting rod 32 and the movement distance of connecting rod 61, reduces the useless work among the bed guardrail control process, and the person of facilitating the use uses, in this embodiment hinge groove 212 is fan-shaped, just be provided with spacing arch 33 on the knob 3, be provided with on the brake valve lever 1 with spacing arch 33 complex arc wall 13, the setting of arc wall 13 has restricted the turned angle of knob 3, and the person of facilitating the use uses.

In this embodiment all be provided with joint spare 4 on the stand 8 of horizontal pole 7 both sides, 1 both sides of brake valve lever are provided with the thimble 6 of drive joint spare 4 motion respectively, and be provided with respectively in the brake valve lever 1 with the connecting piece 2 that two sets of thimbles 6 are connected, actuating lever 31 extends to 3 both sides of knob and forms two connecting portions of being connected with two connecting pieces 2 respectively, knob 3 drives two connecting pieces 2 motions respectively through two connecting portions, make horizontal pole 7 and two sets of stand 8 stable connections through two sets of joint spares 4 in this structure, and only need control through a knob 3 when control horizontal pole 7 goes up and down, the person of facilitating the use controls.

Be provided with the mounting hole 16 of installation horizontal pole 7 on brake valve lever 1, connecting piece 2 is inserted and is established in mounting hole 16, and be provided with fixed orifices 14 on the mounting hole 16 lateral wall, be provided with on connecting piece 2 with fixed orifices 14 complex positioning button 25, be provided with drive positioning button 25 and fixed orifices 14 complex third elastic component 26 on the positioning button 25, positioning button 25 passes horizontal pole 7 and cooperates with fixed orifices 14, make horizontal pole 7 and brake valve lever 1 relatively fixed through positioning button 25 and third elastic component 26, moreover, the steam generator is simple in structure, make things convenient for the quick installation cooperation of connecting piece 2 and driving medium, be convenient for the dismantlement transportation of bed guardrail.

Be provided with on the connecting piece 2 and place groove 24, third elastic component 26 sets up in placing groove 24, and during the motion of connecting piece 2, third elastic component 26 slides in placing groove 24, in this embodiment third elastic component 26 is the spring leaf, and positioning button 25 and the setting of third elastic component 26 integral type, this structure are favorable to positioning button 25 and the stable connection of third elastic component 26, the utility model discloses in be provided with elastic support 222 on the connecting piece 2, elastic support 222 sets up in one side of positioning button 25, and when user control positioning button 25 and fixed orifices 14 break away from, positioning button 25 supports tightly on elastic support 222, and this structure is favorable to improving positioning button 25's support intensity, avoids the mistake to touch to lead to positioning button 25 and fixed orifices 14 accident to break away from.

Preferably, the control handle 1 comprises an outer shell 12 and an inner tube 11 arranged in the outer shell 12, one end of the cross rod 7 is arranged in the inner tube 11 in a penetrating mode, a through hole 73 is formed in the cross rod 7, a through hole 17 is formed in the inner tube 11, and the positioning button 25 penetrates through the through hole 73 and the through hole 17 to be matched with the fixing hole 14.

The connecting piece 2 includes the connecting piece body 22 of being connected with thimble 6 and the connecting seat 21 of being connected with telescopic link, connecting piece body 22 slides and sets up in horizontal pole 7, connecting seat 21 activity sets up in brake valve lever 1, and be provided with first elastic component 5 on horizontal pole 7, first elastic component 5 drive connecting piece body 22 supports on connecting seat 21, when horizontal pole 7 is dismantled with brake valve lever 1 relatively, connecting seat 21 stays in brake valve lever 1, connecting piece body 22 separates with brake valve lever 1 along with horizontal pole 7 together, bed guardrail dismantles in-process connecting seat 21 and is connected with telescopic link all the time, need not consider the cooperation of connecting seat 21 with telescopic link during the reassembly, be convenient for horizontal pole 7 and brake valve lever 1 re-assembly, be favorable to the quick installation dismantlement of bed guardrail.

The connecting piece body 22 is provided with a mounting groove 23, the first elastic piece 5 is arranged in the mounting groove 23, the cross rod 7 is provided with a positioning piece 51, one end of the first elastic piece 5 abuts against the side wall of the mounting groove 23, and the other end of the first elastic piece 5 abuts against the positioning piece 51.

Preferably, the connecting member body 22 is provided with a positioning portion 221, the connecting seat 21 is provided with a positioning groove 211 matched with the positioning portion 221, and the positioning portion 221 is arranged in the positioning groove 211 in a penetrating manner, so that the connecting member body 22 and the connecting seat 21 can be conveniently positioned and installed, and the connecting member body 22 and the connecting seat 21 are prevented from being relatively inclined to influence the driving of the connecting seat 21 on the connecting member body 22.

And the connecting seat 21 is provided with a limiting rod 213, the cross rod 7 is provided with a limiting groove 15 matched with the limiting rod 213, the arrangement of the limiting rod 213 and the limiting groove 15 limits the motion range of the connecting seat 21, and the connecting seat 21 is prevented from being separated from the control handle 1.

The knob 3 is provided with a limiting protrusion 33, the control handle 1 is provided with an arc-shaped groove 13 matched with the limiting protrusion 33, and the limiting protrusion 33 is matched with the arc-shaped groove 13 to limit the rotation angle of the knob 3.

In this embodiment be provided with mount pad 81 on the stand 8, be provided with the arrangement hole 82 on the mount pad 81, joint spare 4 slides and sets up in arrangement hole 82, reset spring 83 sets up in arrangement hole 82, and be provided with spout 41 on the joint spare 4, be provided with slide bar 84 on the mount pad 81, during the motion of joint spare 4, slide bar 84 slides in spout 41, the range of motion of joint spare 4 has been restricted to this structure, avoid joint spare 4 to stretch out the overlength from mount pad 81, thereby lead to avoiding the unexpected damage of buckling of 4 cups of joint spare.

The utility model discloses in be provided with connector 71 on the horizontal pole 7, thimble 6 slides and sets up in connector 71, and be provided with on the connector 71 with joint 4 complex joint hole 72, during the use, thimble 6 is ejecting from joint hole 72 joint 4, make horizontal pole 7 and stand 8 remove the locking, the setting of connector 71 is convenient for thimble 6's stable slip, and it is ejecting from joint hole 72 with joint 4 to be convenient for thimble 6, thereby avoid thimble 6 and joint 4 dislocation to influence 6 drive joints 4 movements of thimble.

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

1. The utility model provides a novel use bed guardrail that knob was opened, includes horizontal pole (7), and is used for supporting stand (8) of horizontal pole (7), horizontal pole (7) and stand (8) sliding connection, its characterized in that: the upright post (8) is provided with a clamping piece (4) and a return spring (83) for driving the clamping piece (4) to be clamped and locked with the cross rod (7) in a sliding manner, the cross rod (7) is provided with a control handle (1) and a thimble (6) for driving the clamping piece (4) to move, a connecting piece (2) connected with the thimble (6) and a knob (3) for controlling the connecting piece (2) to move are arranged in the control handle (1) in a sliding manner;

the knob (3) is provided with a driving rod (31), the driving rod (31) and the connecting piece (2) are provided with a transmission connecting rod (32), the driving rod (31), the transmission connecting rod (32) and the connecting piece (2) form a slider-crank mechanism, the knob (3) rotates, the driving rod (31) pulls the transmission connecting rod (32) to move, the connecting piece (2) and the ejector pins (6) are driven to slide in the cross rod (7) through the transmission connecting rod (32), the ejector pins (6) drive the clamping pieces (4) to move and are separated from the cross rod (7), the cross rod (7) and the stand column (8) are unlocked, and the cross rod (7) can slide up and down on the stand column (8).

2. The novel bed guardrail opened by the knob according to claim 1, characterized in that: all be provided with joint spare (4) on stand (8) of horizontal pole (7) both sides, control handle (1) both sides are provided with thimble (6) of drive joint spare (4) motion respectively, and are provided with connecting piece (2) of being connected with two sets of thimbles (6) respectively in control handle (1), and actuating lever (31) extend to knob (3) both sides and form two connecting portion of being connected with two connecting pieces (2) respectively, and knob (3) drive two connecting pieces (2) motions respectively through two connecting portions.

3. The novel bed guardrail opened by using the knob as claimed in claim 1 or 2, wherein: be provided with mounting hole (16) of installation horizontal pole (7) on brake valve lever (1), connecting piece (2) are inserted and are established in mounting hole (16), and are provided with on mounting hole (16) lateral wall fixed orifices (14), be provided with on connecting piece (2) with fixed orifices (14) complex positioning button (25), be provided with on positioning button (25) and drive positioning button (25) and fixed orifices (14) complex third elastic component (26), positioning button (25) pass horizontal pole (7) and with fixed orifices (14) cooperation, make horizontal pole (7) and brake valve lever (1) relatively fixed.

4. The novel bed guardrail opened by the knob according to claim 3, wherein: connecting piece (2) include connecting piece body (22) be connected with thimble (6) and connecting seat (21) be connected with telescopic link, connecting piece body (22) slide to set up in horizontal pole (7), connecting seat (21) activity sets up in brake valve lever (1), and be provided with first elastic component (5) on horizontal pole (7), first elastic component (5) drive connecting piece body (22) support on connecting seat (21), when horizontal pole (7) and brake valve lever (1) are dismantled relatively, connecting seat (21) are stayed in brake valve lever (1), connecting piece body (22) are separated with brake valve lever (1) along with horizontal pole (7) together.

5. The novel bed guardrail opened by the knob as claimed in claim 4, wherein: the connecting piece body (22) is provided with a positioning part (221), the connecting seat (21) is provided with a positioning groove (211) matched with the positioning part (221), and the positioning part (221) penetrates through the positioning groove (211).

6. The novel bed guardrail opened by the knob according to claim 5, wherein: the connecting seat (21) is provided with a limiting rod (213), and the cross rod (7) is provided with a limiting groove (15) matched with the limiting rod (213).

7. The novel bed guardrail opened by using the knob as claimed in claim 4, 5 or 6, wherein: be provided with mounting groove (23) on connecting piece (2), first elastic component (5) set up in mounting groove (23), and are provided with setting element (51) on horizontal pole (7), and first elastic component (5) drive connecting piece (2) support tightly on setting element (51) to make thimble (6) keep away from joint spare (4).

8. The novel bed guardrail opened by the knob according to claim 7, wherein: the knob (3) is provided with a limiting protrusion (33), the control handle (1) is provided with an arc-shaped groove (13) matched with the limiting protrusion (33), and the limiting protrusion (33) is matched with the arc-shaped groove (13) to limit the rotation angle of the knob (3).

9. The novel bed guardrail opened by the knob according to claim 8, wherein: the clamping device is characterized in that a placement hole (82) is formed in the stand column (8), the clamping piece (4) is arranged in the placement hole (82) in a sliding mode, the reset spring (83) is arranged in the placement hole (82), the clamping piece (4) is provided with a sliding groove (41), a sliding rod (84) is arranged on the stand column (8), and when the clamping piece (4) moves, the sliding rod (84) slides in the sliding groove (41).

10. A novel bed guardrail opened by a knob according to claim 1, 2, 4, 5, 6, 8 or 9, characterized in that: the connecting head (71) is arranged on the cross rod (7), the ejector pin (6) is arranged in the connecting head (71) in a sliding mode, the connecting head (71) is provided with a clamping hole (72) matched with the clamping piece (4), and when the lifting device is used, the clamping piece (4) is ejected out of the clamping hole (72) through the ejector pin (6), so that the cross rod (7) and the stand column (8) are unlocked.