A baby rocking bed
By designing the reclining and swinging functions of the baby shaker, the problem of milk overflow when lying is solved, and helps the baby fall asleep quickly, achieving better care for the baby.
Patent Information
- Application Number
- CN202010366070.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2040-04-30
AI Technical Summary
Babies are prone to breast-flowing problems when lying down, especially after consuming milk, shaking will aggravate this situation, and existing cribs cannot effectively solve this problem.
A baby shaker is designed to realize the baby's reclining state through the tilt of the bed board and the suspension of the swing rod, reducing the possibility of vomiting milk. At the same time, the motor-driven rocking function helps the baby fall asleep quickly.
Through the tilting bed board and swing function, the baby's vomiting situation is effectively reduced, while helping the baby fall asleep quickly, liberating the labor intensity of the caregiver.
Smart Images

Figure CN113576203B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of rocking beds, in particular to a baby rocking bed. Background Art
[0002] With the improvement of living standards, baby beds have gradually become popular, but their functions are relatively simple and cannot meet the growing new needs. Babies are more likely to fall asleep after feeding, and rocking can help babies fall asleep, but if they lie flat on the bed, milk will flow out of the corners of their mouths, or even spit out all the milk they just drank, and rocking will aggravate this situation. Summary of the invention
[0003] The invention provides a baby rocking bed to solve the problem of milk spilling when the baby lies down.
[0004] To achieve the above-mentioned purpose, the present invention provides a baby rocking bed comprising: a bed box, at least two swing rods and a U-shaped base; wherein, the bed box is suspended in the base by the swing rod, and the bed box can swing along the extension direction of the U-shaped space of the base; the bed box comprises: a bed board, a push rod motor, a motor cross bar and a fence with openings at both ends; the motor cross bar is arranged at the bottom of the fence, and the extension direction of the motor cross bar is consistent with the extension direction of the U-shaped space of the base; the bottom surface of the head of the bed board is pivotally connected to one end of the push rod motor, and the foot edge of the bed board is pivotally connected to the fence; the other end of the push rod motor is pivotally connected to the motor cross bar.
[0005] Furthermore, it also includes: a winding barrel, a first wire body and a second wire body, and the bottom surface of the motor cross bar is provided with a first fixed rod and a second fixed rod; wherein the winding barrel can be reciprocated and is arranged on the top surface of the base and is located between the first fixed rod and the second fixed rod; one end of the first wire body and the second wire body are respectively wound on the winding barrel, and the winding direction of the first wire body is opposite to that of the second wire body, and the other ends of the first wire body and the second wire body are respectively connected to the first fixed rod and the second fixed rod.
[0006] Furthermore, the wire winding barrel includes: a first V-shaped mouth and a second V-shaped mouth; wherein, the first V-shaped mouth and the second V-shaped mouth are both annular; the opening direction of the first V-shaped mouth and the second V-shaped mouth is consistent with the rotation direction of the wire winding barrel, the first wire body is wound around the first V-shaped mouth, and the second wire body is wound around the second V-shaped mouth.
[0007] Furthermore, a V-shaped angle between the first V-shaped opening and the second V-shaped opening is 30° to 120°.
[0008] Furthermore, the winding barrel is driven by a motor.
[0009] Furthermore, the fence includes: a body and a flippable side panel, the bottom of the side panel is hinged to the body, and the side of the side panel is detachably connected to the body.
[0010] Furthermore, the side portion of the side panel is detachably connected to the body via a latch, and latches and a plurality of through holes are provided on both sides of the side panel, the latches are provided in the through holes, and the latches pass through the edge of the side panel along the extension direction of the side panel and are inserted into a pin groove provided in the body.
[0011] Further, the side of the side panel is detachably connected to the body through a latch, and the latch is arranged at the side edge of the side panel; wherein the latch comprises: a latch seat and a latch core, the latch seat is provided with a slideway running through the latch seat, the latch core is slidably arranged in the slideway, and the body is provided with a latch hole for accommodating part of the latch core
[0012] Further, the swing arm includes: a rocker arm, a bearing, a first rotating shaft and a second rotating shaft; wherein, a bearing is respectively provided at both ends of the rocker arm; the first rotating shaft is provided on the inner wall of the base, and the second rotating shaft is provided on the outer wall of the bed compartment opposite to the first rotating shaft, and the bearings rotate with the first rotating shaft and the second rotating shaft respectively; the horizontal height of the first rotating shaft is greater than the horizontal height of the second rotating shaft.
[0013] Furthermore, the first wire body and the second wire body are respectively connected to the first fixing rod and the second fixing rod through elastic members.
[0014] Furthermore, it also includes: a supporting connection member and a roller, wherein the supporting connection member is arranged at a connecting corner of the base, and the roller is fixedly connected to the supporting connection member.
[0015] By tilting the bed so that the baby can lie sideways, spitting up of milk will be reduced. Combined with swinging, it can prevent milk from spilling and help the baby fall asleep quickly, saving the caregiver's time and effort. In addition, the following technical effects are also included: (1) It is not affected by the electromagnetic field, and the flexible connection of the elastic member 46 reduces damage, protects the motor 45, and protects the user's safety. Even if an object is caught during operation, it can be easily taken out when the motor stops running or reverses, and it will not be caught like other structures; (2) Motor drive is more convenient than hand-cranked drive; (3) The structure is simple and the swing amplitude is adjustable. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:
[0017] Figure 1 A front view of a baby rocking bed according to an embodiment of the present invention;
[0018] Figure 2 A schematic diagram of the internal structure of a baby rocking bed according to an embodiment of the present invention;
[0019] Figure 3 A three-dimensional diagram of a baby rocking bed according to an embodiment of the present invention;
[0020] Figure 4 is a cross-sectional view of a baby rocking bed according to an embodiment of the present invention;
[0021] Figure 5 It is a structural schematic diagram of a winding barrel in an embodiment of the present invention;
[0022] Figure 6 It is a partial enlarged view of the winding barrel in the embodiment of the present invention;
[0023] Figure 7 This is an enlarged view of part A in an embodiment of the present invention;
[0024] Figure 8 This is an enlarged view of part B in an embodiment of the present invention;
[0025] Fig. 9 This is another schematic diagram of the installation of a latch in an embodiment of the present invention;
[0026] Fig.10 This is another exploded view of a latch in an embodiment of the present invention;
[0027] Fig.11 An exploded view of a swing rod in an embodiment of the present invention;
[0028] Fig.12 The figure is a bottom view of a baby rocking bed according to an embodiment of the present invention.
[0029] Description of reference numerals:
[0030] 1-bed compartment, 2-swing bar, 3-base, 4-winding barrel, 5-hinge;
[0031] 11-bed board, 12-push rod motor, 13-motor cross bar, 14-fence, 21-swing rod, 22-bearing, 23-first rotating shaft, 24-second rotating shaft, 31-support connecting piece, 32-roller, 41-first wire body, 42-second wire body, 43 first V-shaped mouth, 44-second V-shaped mouth, 45-motor, 46-elastic piece;
[0032] 131 - first fixing rod, 132 - second fixing rod, 141 - compartment, 142 - side plate;
[0033] 1431 - pin top, 1432 - first rod portion, 1433 - second rod portion, 1434 - latch seat, 1435 - latch core, 1436 - spring, 1437 - receiving groove. DETAILED DESCRIPTION
[0034] The following describes several preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.
[0035] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.
[0036] Figure 1 A front view of a baby rocking bed according to an embodiment of the present invention; Figure 2 is a schematic diagram of the internal structure of a baby rocking bed according to an embodiment of the present invention; Figure 3 FIG. 4 is a three-dimensional diagram of a baby rocking bed according to an embodiment of the present invention. Figures 1 to 3 As shown, the present invention provides a baby rocking bed comprising: a bed compartment 1, at least two swing rods 2 and a U-shaped base 3; wherein the bed compartment 1 is suspended in the base 3 by the swing rod 2, and the bed compartment 1 can swing along the extension direction of the U-shaped space of the base 3; the bed compartment 1 comprises: a bed board 11, a push rod motor 12, a motor cross bar 13 and a fence 14 with openings at both ends; the motor cross bar 13 is arranged at the bottom of the fence 14, and the extension direction of the motor cross bar 13 is consistent with the extension direction of the U-shaped space of the base 3; the bottom surface of the head of the bed board 11 is pivotally connected to one end of the push rod motor 12, and the foot edge of the bed board 11 is pivotally connected to the fence 14; the other end of the push rod motor 12 is pivotally connected to the motor cross bar 13.
[0037] The bed compartment 1 is suspended on the base 3 by the swing rod 2 and does not interfere with the base 3. The preferred number of the swing rods 2 is four, and two are arranged in a group adjacent to the bed compartment 1 and the base 3. The bed compartment 1 can be pushed by a person or a machine to swing with the base 3 as a fulcrum. The motor crossbar 13 is arranged at the bottom of the base 3 to support the straight rod motor and indirectly support the bed board 11. The motor crossbar 13 is preferably arranged below the head of the bed board 11. The straight rod motor pushes the bed board 11 to lift or lower it with its pivot connection with the fence 14 as the rotating shaft, so as to realize the flipping of the bed board 11. After feeding, hold the baby upright for a period of time and then put it on the bed, and the vomiting of milk will be significantly reduced. It can be seen that when the baby is placed on the baby rocking bed, the straight rod motor drives the bed board 11 to lift and tilt the bed board 11, so that the baby will lie on the bed at an angle, which will reduce spitting up of milk. The larger the flipping angle of the bed board 11, the closer it is to the effect of holding the baby upright, and the better the effect of preventing milk from spilling. Combined with the swinging of the bed compartment 1, it can prevent milk from spilling and help the baby fall asleep quickly, freeing parents and saving worry and effort.
[0038] The turning angle of the bed board 11 is 0-30°. If the angle is too large, the gap between the bed board 1 and the guardrail 6 will be larger, which may easily cause the baby to be injured. 0-10° is preferred to better ensure the safety of the baby.
[0039] The fence 14 surrounds the bed board 11, the push rod motor 12, and the motor cross bar 13. Its height is set according to the baby's body shape, but the internal height measured vertically from the highest bed board 11 to the lowest point of the fence 14 should be at least 275 mm to prevent the baby from falling and ensure the baby's safety. Preferably, a plurality of hollow holes can be added to the bed board 1 for ventilation and air permeability, and also to reduce the overall weight. Further, Figure 4 is a cross-sectional view of a baby rocking bed according to an embodiment of the present invention, Figure 5 Schematic diagram of the structure of the winding barrel in the embodiment of the present invention. Figure 4 and Figure 5 As shown, the baby rocking bed also includes: a wire winding barrel 4, a first wire body 41 and a second wire body 42, and the bottom surface of the motor cross bar 13 is provided with a first fixing rod 131 and a second fixing rod 132; wherein the wire winding barrel 4 can be reciprocated and is arranged on the top surface of the base 3 and is located between the first fixing rod 131 and the second fixing rod 132; one end of the first wire body 41 and the second wire body 42 are respectively wound on the wire winding barrel 4, and the winding direction of the first wire body 41 is opposite to that of the second wire body 42, and the other ends of the first wire body 41 and the second wire body 42 are respectively connected to the first fixing rod 131 and the second fixing rod 132.
[0040] The axis of the winding barrel 4 is perpendicular to the motor crossbar 13. When the winding barrel 4 rotates, the first wire body 41 and the second wire body 42 drive the bed 1 to swing back and forth horizontally according to the degree of rotation of the winding barrel 4. In addition, according to the length of the first wire body 41 and the second wire body 42 wound on the winding barrel 4, that is, the number of windings, the swing amplitude of the horizontal reciprocating motion can be adjusted.
[0041] Further, Figure 6 FIG. 1 is a partial enlarged view of the winding barrel in the embodiment of the present invention. Figure 6 As shown, the winding barrel 4 includes: a first V-shaped opening 43 and a second V-shaped opening 44; wherein the first V-shaped opening 43 and the second V-shaped opening 44 are both annular; the opening directions of the first V-shaped opening 43 and the second V-shaped opening 44 are consistent with the rotation direction of the winding barrel 4, the first wire body 41 is wound around the first V-shaped opening 43, and the second wire body 42 is wound around the second V-shaped opening 44. The first wire body 41 and the second wire body 42 are wound separately through the first V-shaped opening 43 and the second V-shaped opening 44 to avoid mutual interference and ensure continuous and stable swinging.
[0042] The wire winding barrel 4 passes through the first V-shaped opening 43 and the second V-shaped opening 44. The first V-shaped opening 43 and the second V-shaped opening 44 are both provided with round holes. One end of the first wire body 41 and the second wire body 42 are fixed in the round holes, so that the first wire body 41 and the second wire body 42 can be tightly wound in the first V-shaped opening 43 and the second V-shaped opening 44 respectively to prevent falling off.
[0043] Furthermore, since there is a height difference when the bed 1 is horizontally reciprocatingly swinging, the V-shaped angle between the first V-shaped opening 43 and the second V-shaped opening 44 is set to be 30° to 120° to compensate for the height difference and prevent the wire body from detaching during the rotation of the winding barrel 4.
[0044] Furthermore, if Figure 5 As shown, the winding barrel 4 is driven by a motor 45, and the motor 45 is set to rotate forward and reverse, driving the winding barrel to rotate back and forth 4, so that the swing of the baby rocking bed is automated. The motor 45 can also be driven by a remote control device to achieve remote control. The automated swinging does not require physical effort, and can swing continuously to soothe the baby.
[0045] Further, Figure 7 It is an enlarged view of part A in the embodiment of the present invention, as shown in FIG. Figure 3 and Figure 7 As shown, the fence 14 includes: a body 141 and a flippable side panel 142 , the bottom of the side panel 142 is hinged 5 to the body 141 , and the side of the side panel 142 is detachably connected to the body 141 .
[0046] The side of the fence 14 is changed into a reversible side panel 142, which can be turned down by a hinge to facilitate the user to move the baby. The hinge is set inside the side panel 142 and the compartment 141, so that when the side panel 142 is reset to form a complete circumference with the compartment 141, the hinge can be hidden in the corresponding internal space of the side panel 142 and the compartment 141, and the hidden hinge is more beautiful.
[0047] Further, Figure 8 This is an enlarged view of part B in an embodiment of the present invention, as shown Figure 8 As shown, the side of the side panel 142 is detachably connected to the body 141 via a latch 143. The side of the side panel 142 is provided with a latch 143 and a through hole 144. The latch 143 is disposed in the through hole 144. The latch 143 passes through the edge of the side panel 142 along the extension direction of the side panel 142 and is inserted into a pin groove disposed in the body 141.
[0048] The side plate 142 is provided with a latch 143, which is placed in the through hole 144. The latch 143 includes a pin top 1431, a first rod 1432 and a second rod 1433. The latch 143 passes through a portion of the side plate 142 in a direction parallel to the side plate 142 to expose the second rod 1433. A pin groove is provided at a position corresponding to the second rod 1433 on the body 141, and the second rod 1433 is inserted into the pin groove to fix the side plate 142 on the bed compartment 1. The diameter of the first rod 1432 is narrower than the pin top 1431 and the second rod 1433. A spring is sleeved on the first rod 1432. The spring can only move in the through hole 144 formed by the plug 143 passing through the side plate 142. When the pin top 1431 is pulled, the spring is compressed, and the second rod 1433 leaves the pin slot, causing the side plate 142 to flip down through the hinge. When the pin top 1431 is released, the plug 143 is reset by the spring. It is convenient and practical, avoids stabbing babies, and is safer.
[0049] Furthermore, another type of latch may be used for detachable connection. Fig. 9 is another schematic diagram of bolt installation in an embodiment of the present invention, Fig.10 FIG. 2 is another exploded view of a latch in an embodiment of the present invention. Fig. 9 and Fig.10 As shown, the side of the side panel 142 is detachably connected to the body 141 through the latch 143, and the latch 143 is arranged at the side edge of the side panel 142; wherein, the latch 143 includes: a latch seat 1434 and a latch core 1435, the latch seat is provided with a slideway running through itself, the latch core is slidably arranged in the slideway, and the body 141 is provided with a latch hole for accommodating part of the latch core 1435.
[0050] There are many ways of detachable connection. For example, a groove is provided on the edge of the side panel 142 for installing the pin 143. The pin 143 is preferably not beyond the surface of the side panel 142 to prevent scratches on the user and improve the appearance, so that the side panel 142 can be removed at any time to facilitate the care of the baby.
[0051] A spring 1436 can also be added, and the side walls of the latch seat 1434 and the latch core 1435 facing each other are provided with matching accommodating grooves 1437, and the spring 1436 is placed in the matching accommodating grooves 1437, and the length of the accommodating grooves 1437 is greater than the length of the spring 1436. The latch core 1435 is pushed partially into the latch hole to complete the detachable connection between the side plate 142 and the compartment 141, which is simple and quick; the spring 1436 can be added for buffering, and when the latch core 1435 squeezes the spring 1436, it plays a buffering role, preventing the latch from reaching the limit position and causing a collision sound to disturb the baby. The spring can be added for buffering, and when the latch core 1435 squeezes the spring 1436, it plays a buffering role, preventing the latch from reaching the limit position and causing a collision sound to disturb the baby.
[0052] Further, Fig.11 FIG. 1 is an exploded view of the swing rod in the embodiment of the present invention, as shown in FIG. Fig.11 As shown, the swing rod 2 includes: a swing rod 21, a bearing 22, a first rotating shaft 23 and a second rotating shaft 24; wherein, a bearing 22 is respectively provided at both ends of the swing rod 21; the first rotating shaft 23 is provided on the inner wall of the base 3, and the second rotating shaft 24 is provided on the outer wall of the bed compartment 1 opposite to the first rotating shaft 23, and the bearing 22 rotates with the first rotating shaft 23 and the second rotating shaft 24 respectively; the horizontal height of the first rotating shaft 23 is greater than the horizontal height of the second rotating shaft 24.
[0053] The swing rod 21 is made of metal, and a bearing 22 is fixed at each end of the swing rod 21. The first rotating shaft 23 and the second rotating shaft 24 respectively penetrate the bearing 22 and are respectively connected to the base 3 and the bed 1. The first rotating shaft 23 and the second rotating shaft 24 are parallel, and the swing rod 21 swings around the first rotating shaft 23 and the second rotating shaft 24 to cooperate with the swing of the bed 1. The swing direction of this structure is fixed, the stability is good, the bearing has a long service life and the noise is small.
[0054] Furthermore, if Figure 4 As shown, the first wire body 41 and the second wire body 42 are respectively connected to the first fixing rod 131 and the second fixing rod 132 through an elastic member 46 .
[0055] The elastic member 46 is preferably a spring. Even if the motor 45 clamps an object during the swinging process of the bed 1, the motor 45 will not get stuck, and the elastic member 46 can still be pulled to rotate. After the motor 45 rotates to the preset rotation limit, it can rotate in the reverse direction to release the clamped object, rather than the motor 45 not reaching the preset rotation limit and causing the motor 45 to get stuck. By adjusting the number of turns of the first wire body 41 and the second wire body 42 on the winding barrel 4, the tightness of the elastic member 46 can also be adjusted to reduce damage when hitting or clamping an object, and it can also play a buffering role. The elastic member 46 makes the swing direction change process smoother, avoiding the reverse movement to the limit position that is too stiff and disturbs the baby, thereby improving the user experience.
[0056] Further, Fig.12 FIG. 4 is a bottom view of a baby rocking bed according to an embodiment of the present invention, Fig.12 As shown, the base 3 further includes: a supporting connection member 31 and a roller 32 . The supporting connection member 31 is arranged at a connecting corner of the base 3 , and the roller 32 is fixedly connected to the supporting connection member 31 .
[0057] The bottom of the base 3 is provided with a support connector 31, which is specifically arranged at the connecting corner of the bottom surface of the base 3 of the baby rocking bed, and is used to reinforce the base 3. The support connector 31 can be of any shape and is not limited here. Four support connectors 31 are respectively connected to the connecting corners between the sides of the base 3, and the number of rollers 32 and the support connectors 31 is correspondingly arranged, and the rollers 32 are connected to the support connectors 31, so that the support point of the baby rocking bed can be moved to the support connector 31, which increases the load-bearing capacity of the baby rocking bed, makes the structure safer, and facilitates the movement of the baby rocking bed.
[0058] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.
Claims
1. A baby rocking bed, characterized in that: include: a bed compartment, at least two swing bars and a U-shaped base; Wherein, the bed compartment is suspended in the base through the swing rod, and the bed compartment can swing along the extension direction of the U-shaped space of the base; The bed compartment comprises: a bed board, a push rod motor, a motor cross bar and a fence with openings at both ends; The motor cross bar is arranged at the bottom of the fence, and the extension direction of the motor cross bar is consistent with the extension direction of the U-shaped space of the base; The bottom surface of the head of the bed board is pivotally connected to one end of the push rod motor, and the edge of the foot of the bed board is pivotally connected to the fence; The other end of the push rod motor is pivotally connected to the motor crossbar; It also includes: a winding barrel, a first wire body and a second wire body, and the bottom surface of the motor cross bar is provided with a first fixing rod and a second fixing rod; Wherein, the winding barrel is reciprocatably arranged on the top surface of the base and is located between the first fixing rod and the second fixing rod; One end of the first wire body and the second wire body are respectively wound on the wire winding barrel, the winding direction of the first wire body is opposite to that of the second wire body, and the other ends of the first wire body and the second wire body are respectively connected to the first fixing rod and the second fixing rod; The winding barrel comprises: a first V-shaped opening and a second V-shaped opening; Wherein, the first V-shaped opening and the second V-shaped opening are both annular; The opening directions of the first V-shaped opening and the second V-shaped opening are consistent with the rotation direction of the winding barrel, the first wire body is wound around the first V-shaped opening, and the second wire body is wound around the second V-shaped opening; The fence comprises: a box body and a flippable side panel, the bottom of the side panel is hinged to the box body, and the side of the side panel is detachably connected to the box body.
2. The baby rocking bed according to claim 1, characterized in that: The V-shaped angle between the first V-shaped opening and the second V-shaped opening is 30° to 120°.
3. The baby rocking bed according to claim 2, characterized in that: The winding drum is driven by a motor.
4. The baby rocking bed according to claim 1, characterized in that: The side portion of the side panel is detachably connected to the body via a latch, and latches and a plurality of through holes are provided on both sides of the side panel. The latches are provided in the through holes, and the latches penetrate through the edge of the side panel along the extension direction of the side panel and are inserted into pin grooves provided in the body.
5. The baby rocking bed according to claim 1, characterized in that: The side of the side panel is detachably connected to the compartment body via a latch, and the latch is arranged at the side edge of the side panel; Wherein, the latch comprises: a latch seat and a latch core, the latch seat is provided with a slideway running through the latch seat, the latch core is slidably arranged in the slideway, and the compartment is provided with a latch hole for accommodating part of the latch core.
6. The baby rocking cot according to any one of claims 1 to 5, characterized in that: The swing arm comprises: a swing arm, a bearing, a first rotating shaft and a second rotating shaft; Wherein, a bearing is respectively provided at both ends of the swing rod; The first rotating shaft is arranged on the inner wall of the base, the second rotating shaft is arranged on the outer wall of the bed compartment opposite to the first rotating shaft, and the bearings rotate with the first rotating shaft and the second rotating shaft respectively; The horizontal height of the first rotating shaft is greater than the horizontal height of the second rotating shaft.
7. The baby rocking cot according to any one of claims 1 to 5, characterized in that: The first wire body and the second wire body are respectively connected to the first fixing rod and the second fixing rod through elastic members.
8. The baby rocking bed according to claim 7, characterized in that: Also includes: A supporting connection member and a roller, wherein the supporting connection member is arranged at a connecting corner of the base, and the roller is fixedly connected to the supporting connection member.
Citation Information
Patent Citations
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CN202896637U
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