A medical bed base frame including directional wheels

Abstract

The present invention relates to the technical field of medical equipment, and specifically discloses a medical bed frame including directional wheels, including caster brackets located at the four corners of the medical bed frame, casters fixed in the caster brackets, and pedal mounting frames located at the front and rear of the medical bed frame, wherein the front and rear pedal mounting frames are connected by an axial connecting rod axially connected to the medical bed frame; the frame also includes directional wheels, directional control structures, and caster control structures, wherein the directional wheels are located in the middle of the medical bed frame. The present invention mainly arranges a liftable directional wheel in the middle of the frame, and controls it in conjunction with the directional control structure, and realizes control operation through a foot pedal, thereby easily controlling the movement direction of the bed body. This solution is convenient for medical staff to operate, and meets the needs of existing medical places for medical beds to a greater extent, and has very beneficial technical effects.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and more particularly to a medical bed base frame comprising directional wheels. Background Art

[0002] Medical beds have great use value in disease treatment and health care. With the continuous improvement of medical care level, medical beds with various functions have emerged.

[0003] In the prior art, medical beds achieve mobility by installing casters on the lower part of the base frame. However, when a patient lies on the bed, it is difficult for a single person to operate the moving direction of the medical bed due to the heavy load, especially in narrow corridors, where it is very inconvenient for the bed to turn. Therefore, how to provide a medical bed base frame that can easily control the moving direction of the bed is a problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent.

[0005] To this end, one object of the present invention is to provide a medical bed frame with fixed wheels, comprising caster brackets located at the four corners of the medical bed frame, casters fixed in the caster brackets, and pedal mounting brackets located at the front and rear of the medical bed frame, wherein the front and rear pedal mounting brackets are connected by a shaft connecting rod pivotally connected to the medical bed frame;

[0006] Furthermore, the medical bed base frame further includes a directional wheel, a directional control structure, and a caster control structure, wherein the directional wheel is located in the middle of the medical bed base frame;

[0007] Furthermore, the caster control structure connects the caster and the pedal mounting frame, and is composed of a hexagonal connecting rod, a first hexagonal hole connecting piece, and a first gas spring. The hexagonal connecting rod connects the two front casters and the two rear casters respectively. The first hexagonal hole connecting piece is sleeved on the hexagonal connecting rod. One end of the first gas spring is axially connected to the first hexagonal hole connecting piece, and the other end is axially connected to the shaft connecting rod.

[0008] Furthermore, the directional control structure connects the directional wheel and the pedal mounting frame, and is composed of a second hexagonal hole connecting member, a second gas spring, a first axial connecting arm, a second axial connecting arm, a third axial connecting arm, a fourth axial connecting arm, a fifth axial connecting arm, and a first axle beam and a second axle beam. The first axle beam and the second axle beam are respectively axially connected to the front and middle positions of the base frame. The second hexagonal hole connecting member is sleeved on the hexagonal connecting rod. The second hexagonal hole connecting member, the first axial connecting arm, the second axial connecting arm, the first axle beam, the third axle arm, the fourth axle arm, the second axle beam, the fifth axle beam, and the directional wheel are axially connected in sequence.

[0009] Preferably, the fifth connecting arm is an H-shaped structure, with two parallel arms connected to both sides of the directional wheel respectively;

[0010] Preferably, the pedal mounting frame includes three gears. When the left side of the pedal is stepped on, the caster is locked, the caster is unlocked in the horizontal position of the pedal, and the directional wheel is raised. When the right side of the pedal is stepped on, the directional wheel is lowered and contacts the ground.

[0011] Preferably, the first hexagonal hole connector and the second hexagonal hole connector have the same structure, both of which are double-layer plywood structures. The upper and lower plywood are connected by a curved elastic connecting part, a hexagonal through-hole is provided between the upper and lower plywood, a screw hole is provided in the vertical direction at the same position of the upper and lower plywood, and an axial connection hole is provided in the horizontal direction at the end of the lower plywood.

[0012] Preferably, the caster includes a wheel body at the bottom and a wheel rod at the upper part of the wheel body, the wheel rod is axially connected to the wheel body and is inserted and fixed in the caster bracket, and a hexagonal hole is horizontally penetrated on the wheel rod at the connection between the caster and the caster bracket, and correspondingly, a hexagonal hole is also horizontally penetrated at the connection position between the caster bracket and the wheel rod, and the two ends of the hexagonal connecting rod are respectively inserted in the hexagonal holes; the interior of the caster is composed of a brake disc, a hexagonal cam, an upper pressure rod, a lower pressure rod, a return spring and a limiting protrusion; the hexagonal cam is a frustum-shaped, with an arc-shaped protrusion on the edge corresponding to a limiting block on the other edge; the frustum surface on one side of the hexagonal cam is provided with a hexagonal groove, which cooperates with the hexagonal connecting rod, and the other frustum surface is axially connected in the caster; the upper end face of the upper pressure rod is a circular arc and contacts with the hexagonal cam, the lower end face of the upper pressure rod is connected to the return spring, and the lower end of the return spring is connected to the brake disc through the lower pressure rod.

[0013] The overall beneficial effect of the present invention is that: in the above-mentioned technical solution, a liftable directional wheel is mainly set in the middle position of the base frame, and is controlled by a directional control structure, and the control operation is realized by a foot pedal. When the directional wheel is lowered, it contacts the ground, thereby realizing the arbitrary change of the direction of the bed; at the same time, the caster control structure also locks and unlocks the four casters through the foot pedal, thereby fixing the position of the medical bed.

[0014] Applying the above-mentioned base frame of the medical bed including directional wheels to the existing medical beds can achieve the purpose of easily controlling the movement direction of the bed by a single person, which is convenient for medical staff to operate, meets the demand for medical beds in existing medical facilities to a greater extent, and has very beneficial technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Magnified images of key parts;

[0018] Figure 3 A schematic structural diagram of a directional control structure and a caster control structure in an embodiment of the present invention;

[0019] Figure 4 for Figure 3 Reverse view of ;

[0020] Figure 5 Schematic diagram of the connection between the hexagonal connecting rod and the caster in an embodiment of the present invention;

[0021] Figure 6 Schematic diagram of the structure of the first hexagonal hole connecting member and the second hexagonal hole connecting member in an embodiment of the present invention;

[0022] Figure 7 Schematic diagram of the internal structure of the caster in an embodiment of the present invention.

[0023] in:

[0024] 1- caster bracket, 2- pedal mounting bracket, 3- axis connecting rod, 4- caster, 5- fixed wheel, 6- hexagonal connecting rod, 7- first axis beam, 8- second axis beam;

[0025] 41-wheel rod, 42-wheel body, 43-brake disc, 44-hexagonal cam, 45-upper pressure rod, 46-lower pressure rod, 47-return spring, 48-limiting protrusion;

[0026] 100 - first gas spring, 200 - second gas spring, 101 - first hexagonal hole connector, 201 - second hexagonal hole connector, 202 - first axis connecting arm, 203 - second axis connecting arm, 204 - third axis connecting arm, 205 - fourth axis connecting arm, 206 - fifth axis connecting arm;

[0027] a-hexagonal through hole, b-screw hole, c-axis connection hole. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] Example

[0034] See also Figure 1-Figure 7The present invention discloses a medical bed frame including fixed wheels, comprising caster brackets 1 located at the four corners of the medical bed frame, casters 4 fixed in the caster brackets 1, and pedal mounting brackets 2 located at the front and rear of the medical bed frame. The front and rear pedal mounting brackets 2 are connected by a connecting rod 3 axially connected to the medical bed frame. The pedal mounting bracket 2 has three gears. When the left side of the pedal is stepped on, the casters 4 are locked. When the pedal is in the horizontal position, the casters 4 are unlocked and the fixed wheels 5 are raised. When the right side of the pedal is stepped on, the fixed wheels 5 are lowered and contact the ground.

[0035] In the above technical solution, the medical bed base frame further includes a directional wheel 5, a directional control structure, and a caster control structure, and the directional wheel 5 is located in the middle of the medical bed base frame;

[0036] In the above technical solution, the caster control structure connects the caster 4 and the pedal mounting frame 2, and is composed of a hexagonal connecting rod 6, a first hexagonal hole connecting member 101, and a first gas spring 100. The hexagonal connecting rod 6 connects the two front casters 4 and the two rear casters 4 respectively, the first hexagonal hole connecting member 101 is sleeved on the hexagonal connecting rod 6, and one end of the first gas spring 100 is axially connected to the first hexagonal hole connecting member 101, and the other end is axially connected to the shaft connecting rod 3;

[0037] In the above technical solution, the directional control structure connects the directional wheel 5 and the pedal mounting frame 2, which is composed of a second hexagonal hole connecting member 201, a second gas spring 200, a first axial connecting arm 202, a second axial connecting arm 203, a third axial connecting arm 204, a fourth axial connecting arm 205, a fifth axial connecting arm 206 and a first axial beam 7 and a second axial beam 8. The first axial beam 7 and the second axial beam 8 are respectively axially connected to the front and middle positions of the chassis, the second hexagonal hole connecting member 201 is sleeved on the hexagonal connecting rod 6, the second hexagonal hole connecting member 201, the first axial connecting arm 202, the second axial connecting arm 203, the first axial beam 7, the third axial connecting arm 204, the fourth axial connecting arm 205, the second axial beam 8, the fifth axial connecting arm 206 and the directional wheel 5 are axially connected in sequence; the fifth axial connecting arm 206 is an H-shaped structure, and the two parallel arms are respectively axially connected to the two sides of the directional wheel 5;

[0038] In the above technical solution, the first hexagonal hole connector 101 and the second hexagonal hole connector 201 have the same structure, both of which are double-layer plywood structures. The upper and lower plywood are connected by a curved elastic connection part. A hexagonal through hole a is opened between the upper and lower plywood, and a screw hole b is opened in the vertical direction at the same position of the upper and lower plywood. An axial connection hole c is opened in the horizontal direction at the end of the lower plywood.

[0039] In the above technical solution, the caster 4 includes a wheel body 42 at the bottom and a wheel rod 41 at the upper part of the wheel body 42. The wheel rod 41 is axially connected to the wheel body 42 and is inserted and fixed in the caster bracket 1. A hexagonal hole is horizontally penetrated on the wheel rod 41 at the connection between the caster 4 and the caster bracket 1. Correspondingly, a hexagonal hole is also horizontally penetrated at the connection position between the caster bracket 1 and the wheel rod 41. The two ends of the hexagonal connecting rod 6 are respectively inserted in the hexagonal holes; the interior of the caster 4 is composed of a brake disc 43, a hexagonal cam 44, an upper pressure rod 45, a lower pressure rod 46, a reset spring 47 and a limiting protrusion 48; the hexagonal cam 44 is composed of a brake disc 43, a hexagonal cam 44, an upper pressure rod 45, a lower pressure rod 46, a reset spring 47 and a limiting protrusion 48; The convex shaft 44 is a frustum-shaped cone with an arc-shaped protrusion on the edge, corresponding to a limit block on the other edge; a hexagonal groove is provided on the frustum surface of the hexagonal convex shaft 44 on one side, which cooperates with the hexagonal connecting rod 6, and the other frustum surface is axially connected to the caster 4; the upper end face of the upper pressure rod 45 is an arc and contacts the hexagonal convex shaft 44, and the lower end face of the upper pressure rod 45 is connected to a reset spring 46, and the lower end of the reset spring 46 is connected to the brake disc 43 through the lower pressure rod 46; the above-mentioned caster 4 scheme is a preferred embodiment of the present invention, and a similar structure with a pulley structure and a locking function disclosed in the prior art can also be selected.

[0040] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0041] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A medical bed frame including directional wheels, comprising caster brackets (1) located at the four corners of the medical bed frame, casters (4) fixed in the caster brackets (1), and pedal mounting brackets (2) located at the front and rear of the medical bed frame, the front and rear pedal mounting brackets (2) are connected by an axial connecting rod (3) axially connected to the medical bed frame, the caster (4) comprises a wheel body (42) at the bottom and a wheel rod (41) at the upper part of the wheel body (42), the wheel rod (41) is axially connected to the wheel body (42), and is inserted and fixed in the caster bracket (1), characterized in that: The medical bed base frame also includes a directional wheel (5), a directional control structure, and a caster control structure; the caster control structure connects the caster (4) and the pedal mounting frame (2), and is composed of a hexagonal connecting rod (6), a first hexagonal hole connecting piece (101), and a first gas spring (100); the hexagonal connecting rod (6) is respectively connected to the two front casters (4) and the two rear casters (4); the first hexagonal hole connecting piece (101) is sleeved on the hexagonal connecting rod (6); one end of the first gas spring (100) is axially connected to the first hexagonal hole connecting piece (101), and the other end is axially connected to the axial connecting rod (3); the directional wheel (5) is located in the middle of the medical bed base frame; the directional control structure connects the directional wheel (5) and the pedal mounting frame (2), and is composed of a second hexagonal hole connecting piece (101) and a second hexagonal hole connecting piece (101). The invention relates to a frame comprising a first axial connecting arm (201), a second gas spring (200), a first axial connecting arm (202), a second axial connecting arm (203), a third axial connecting arm (204), a fourth axial connecting arm (205), a fifth axial connecting arm (206), a first axial beam (7) and a second axial beam (8), wherein the first axial beam (7) and the second axial beam (8) are axially connected at the front and middle positions of the frame respectively, the second hexagonal hole connecting member (201) is sleeved on the hexagonal connecting rod (6), and the second hexagonal hole connecting member (201), the first axial connecting arm (202), the second axial connecting arm (203), the first axial beam (7), the third axial connecting arm (204), the fourth axial connecting arm (205), the second axial beam (8), the fifth axial connecting arm (206) and the directional wheel (5) are axially connected in sequence.

2. A medical bed base frame comprising directional wheels according to claim 1, characterized in that: The pedal mounting frame (2) comprises three gears. When the left side of the pedal is stepped on, the caster (4) is locked, the caster (4) is unlocked when the pedal is in a horizontal position, and the directional wheel (5) is raised at the same time. When the right side of the pedal is stepped on, the directional wheel (5) is lowered and contacts the ground.

3. A medical bed base frame comprising directional wheels according to claim 1, characterized in that: A hexagonal hole is transversely penetrated through the wheel rod (41) at the connection between the caster (4) and the caster bracket (1), and correspondingly, a hexagonal hole is also transversely penetrated through the connection position between the caster bracket (1) and the wheel rod (41), and the two ends of the hexagonal connecting rod (6) are respectively inserted into the hexagonal holes.

4. A medical bed base frame comprising directional wheels according to claim 3, characterized in that: The caster (4) is internally composed of a brake disc (43), a hexagonal cam (44), an upper pressure rod (45), a lower pressure rod (46), a return spring (47) and a limit protrusion (48); the hexagonal cam (44) is a truncated cone type, with an arc-shaped protrusion on the edge corresponding to a limit block on the other edge; a hexagonal groove is provided on the truncated cone surface on one side of the hexagonal cam (44) to cooperate with the hexagonal connecting rod (6), and the other truncated cone surface is axially connected to the caster (4); the upper end surface of the upper pressure rod (45) is an arc and contacts the hexagonal cam (44), the lower end surface of the upper pressure rod (45) is connected to a return spring (47), and the lower end of the return spring (47) is connected to the brake disc (43) through the lower pressure rod (46).

5. A medical bed base frame comprising directional wheels according to any one of claims 1 to 4, characterized in that: The first hexagonal hole connector (101) and the second hexagonal hole connector (201) have the same structure, both of which are double-layer splint structures, wherein the upper and lower splints are connected by a curved elastic connection portion, a hexagonal through hole (a) is provided between the upper and lower splints, a screw hole (b) is provided in the vertical direction at the same position of the upper and lower splints, and an axial connection hole (c) is provided in the horizontal direction at the end of the lower splint.

6. A medical bed base frame comprising directional wheels according to claim 5, characterized in that: The fifth axial connection arm (206) is an H-shaped structure, and the two parallel arms are axially connected to the two sides of the directional wheel (5) respectively.

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