CN201752470U - Hospital bed base with central brake - Google Patents

Abstract

The utility model discloses a bed base with a central control brake device, including two cross beams and a hollow support rod located at the front and rear sides of the bottom of the bed, sleeves are respectively arranged at the two ends of the front and rear cross beams, the lower ends of the sleeves are rotatably connected to a wheel seat with a rotating wheel, and brake components are respectively installed in each sleeve, and two rotating shafts that can drive the brake components in each sleeve to brake synchronously are arranged at the front and rear sides of the bottom of the bed, and the two ends of the front and rear rotating shafts respectively vertically pass through the front and rear hollow support rods and then insert into the front and rear sleeves to be connected with the brake components, and a top pressure piece is correspondingly arranged on the rotating shaft to push the brake component downward to brake as it rotates, and four top pressure pieces are correspondingly installed in the sleeves and press on the brake component, and a connecting rod transmission mechanism is also arranged between the two rotating shafts, and a brake pedal is arranged on one of the rotating shafts. The utility model aims to provide a bed base with a central control brake device that is simple in structure and easy to use.

Description

Hospital bed base with central brake

[technical field]

The utility model relates to a bed base with a central control braking device.

[Background technique]

Existing hospital bed brake device is generally single-wheel brake, is provided with brake assembly on a certain runner seat of sick bed, drives the brake assembly on this runner seat by pedal to complete braking. Such a mechanism has the following disadvantages: the sick bed is generally provided with four runners, and after a certain runner is braked, the whole sickbed will rotate around the rotating shaft of the runner, and the brake is unstable. Because the brake is unstable, the safety of the patient is difficult to be guaranteed. The present invention is made under such background.

[utility model content]

The problem to be solved by the utility model is to provide a sick bed base with a centrally controlled brake device with a simple structure and convenient use.

In order to solve the above-mentioned problems, the utility model adopts the following technical solutions:

The base of the hospital bed with a central control brake device includes two beams and hollow struts located at the front and rear sides of the bottom of the bed. The two ends of the front and rear beams are respectively provided with bushings, and the lower ends of the bushes are rotatably connected with wheel seats with wheels. Each bushing is respectively equipped with a brake assembly, and two rotating shafts that can drive the brake assembly in each bushing to brake synchronously are arranged on the front and rear sides of the bottom of the hospital bed. The rod is then inserted into the front and rear sleeves to connect with the brake assembly. The rotating shaft is correspondingly provided with pressing pieces that push the brake assembly to brake downwards as it rotates. The four pressing pieces are correspondingly set in the sleeves and pressed against the brake assembly On the other hand, a link transmission mechanism is also arranged between the two rotating shafts, and a brake pedal is arranged on one of the rotating shafts.

The hospital bed base with central control brake device as described above is characterized in that the link transmission mechanism includes a front short link, a rear short link, a long link and two middle links, and the front short link and the rear short link are respectively It is connected with the middle part of the front and rear rotating shafts as a whole, and the two ends of one intermediate link are respectively connected with one end of the long link and the front short link, and the two ends of the other intermediate link are respectively connected with the other end of the long link and the rear short link. Turn to connect.

As mentioned above, the base of the hospital bed with the central control brake device is characterized in that two connecting rods are also arranged between the two crossbeams on the front and rear sides.

The base of the hospital bed with a central control brake device as described above is characterized in that the center of the rotating shaft is fitted with a hexagonal steel shaft, the pressing piece is a cam, and the center of the cam is respectively provided with hexagonal holes that can be clipped on the hexagonal steel shaft.

The beneficial effects of the utility model are:

1. Brake components are set inside the casing. Two rotating shafts that can drive four-wheel synchronous brakes are installed on the front and rear sides of the seat frame. The two ends of a rotating shaft pass through the two hollow rods on the front side vertically and then insert into the two front casings. It is connected with the two brake assemblies on the front side, and the two ends of the other rotating shaft are vertically passed through the two hollow struts on the rear side and then inserted into the two bushings on the rear side to connect with the two brake assemblies on the rear side. There is a connecting rod transmission mechanism between the two rotating shafts. The two ends of one of the rotating shafts are respectively equipped with brake pedals that drive the other rotating shaft to rotate synchronously. When braking, step down on the brake pedal to drive the two rotating shafts to rotate synchronously, thereby driving the brake components to brake synchronously. The stop position is accurate, and the hospital bed will not swing, avoiding the disadvantages of unstable braking and difficult guarantee of patient safety when single-wheel brakes are used in the prior art. The structure is simple and the operation is convenient.

2. There is a hexagonal steel shaft in the center of the rotating shaft, and the top pressure piece is a cam. The center of the cam is respectively provided with a hexagonal hole that can be fitted on the hexagonal steel shaft. The positioning is firm, so that the top pressure piece can rotate under the drive of the hexagonal steel shaft. It avoids the disadvantage that the positioning between the pressing piece and the rotating shaft is not firm and easy to loosen when the round shaft is used.

3. The connecting rod transmission mechanism includes a front short connecting rod, a rear short connecting rod, a long connecting rod and two middle connecting rods. The two ends of the connecting rod are rotatably connected with one end of the long connecting rod and the front short connecting rod respectively, and the two ends of the other intermediate connecting rod are respectively rotatably connected with the other end of the long connecting rod and the rear short connecting rod, which is more concise in appearance and simple in structure.

4. There is an arc-shaped limiting groove on the upper side of the cam, and a rotating positioning block for limiting the rotation angle of the pressing piece is arranged inside the hollow support rod. The rotating positioning block is convexly installed in the above-mentioned arc-shaped limiting groove, and passes The cam can only rotate within a limited angle range after being limited by the shape limiting groove, so that no matter how the user steps on the brake pedal, the cam will not rotate excessively and the brake will not be firm. The structure is simple and the practicability is strong. .

[Description of drawings]

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model;

Fig. 2 is a schematic diagram of the decomposition structure of the utility model;

Fig. 3 is a sectional view of the inner brake assembly of the hollow support rod of the utility model;

Fig. 4 is a schematic diagram of the utility model in use on a hospital bed.

[Detailed ways]

As shown in Figures 1 to 4, the base of the hospital bed with the central control brake device includes two beams 11 and hollow struts 12 located at the front and rear sides of the bottom of the hospital bed, and two connecting rods are also arranged between the two beams 11 at the front and rear sides. 10. The two ends of the front and rear side beams 11 are respectively provided with sleeves 13, and the lower ends of the sleeves 13 are rotatably connected with wheel bases 14 with runners 15. Each sleeve 13 is respectively equipped with a brake assembly 2. The rear side is provided with two rotating shafts 31 that can drive the brake assembly 2 in each bushing 13 to brake synchronously. 13 is connected with the brake assembly 2, and the rotating shaft 31 is correspondingly provided with pressing pieces 33 that push the brake assembly 2 to brake downwards as it rotates. 2, a link transmission mechanism 4 is also provided between the two rotating shafts 31, and a brake pedal 32 is provided on one of the rotating shafts 31.

In the utility model, the center of the rotating shaft 31 is fitted with a hexagonal steel shaft 310, and the pressing member 33 is a cam. The center of the cam is respectively provided with a hexagonal hole 330 that can be clamped on the hexagonal steel shaft 310. The upper side of the cam is provided with a circular arc shape. The limit groove 331, the brake assembly 2 includes a brake lever 21 that can slide up and down along the sleeve 13 and a return spring 22 that is set outside the brake lever 21 and pushes the brake lever 21 upwards, and the brake lever 21 is pressed against the pressing piece 33 on the lower side, above the cam, the sleeve 13 is provided with a rotating positioning block 131 for limiting the rotation angle of the cam, and the rotating positioning block 131 is protrudingly installed in the above-mentioned arc-shaped limiting groove 331 . The upper end of the brake lever 21 is provided with a roller 23 that can roll along the outer circumference of the cam, and the lower side of the cam is provided with a resetting cavity 332 for the brake lever 21 to be inserted upward and an arc-shaped transition surface 333 for the roller 23 to slide in.

The working process of the preferred embodiment of the present utility model is as follows: when braking, step down on the brake pedal 32 to drive the two rotating shafts 31 to rotate synchronously, and the two rotating shafts 31 respectively drive the upper cam to rotate clockwise and push the brake lever 21 to brake downward. At this time, the brake lever 21 is pressed against the largest diameter end of the cam under the upward thrust of the return spring 22, so that the force on the cam on the rotating shaft 31 and the corresponding brake lever 21 are balanced again, and the synchronous braking operation of each brake component is completed, and the brake stops. When the single wheel brake is used in the prior art, the brake is unstable and the patient's safety is difficult to be guaranteed. The structure is simple and the operation is convenient; when the brake is released, the reverse brake pedal 32 , the rotating shaft 31 and the cam on it rotate counterclockwise, and now the brake lever 21 slides into the reset cavity 332 provided on the lower side of the cam under the upward thrust of the back-moving spring 22, and the brake is released.

Claims (3)

1. control the sick bed base of brake gear in the band, comprise be positioned at sick bed bottom before, two crossbeams (11) of rear side and hollow bar (12), before it is characterized in that, rear side crossbeam (11) two ends are respectively arranged with sleeve pipe (13), sleeve pipe (13) lower end is rotatably connected to the wheel seat (14) of band runner (15), be respectively installed with brake assemblies (2) in each sleeve pipe (13), before the sick bed bottom, rear side is provided with two rotating shafts (31) that can drive the interior brake assemblies of each sleeve pipe (13) (2) synchronous brake, before, before back rotating shaft (31) two ends are vertically passed respectively, before rear side hollow bar (12) is inserted again, link to each other with brake assemblies (2) in the rear side sleeve pipe (13), the last correspondence of rotating shaft (31) is provided with it rotates the top-pressure part (33) that promotes the downward brake of brake assemblies (2), four top-pressure parts (33) correspondence is sleeved on the interior also roof pressure of sleeve pipe (13) on brake assemblies (2), also be provided with a jointed gear unit (4) between two rotating shafts (31), wherein a rotating shaft (31) is provided with brake pedal plate (32).

2. according to the sick bed base of controlling brake gear in the described band of claim 1, it is characterized in that described jointed gear unit (4) comprises preceding short connecting rod, back short connecting rod (40,41), a long connecting rod (42) and two intermediate connecting rods (43), preceding short connecting rod, back short connecting rod (40,41) are connected as a single entity with forward and backward rotating shaft (31) middle part respectively, one intermediate connecting rod (43) two ends are rotationally connected with long connecting rod (42) one ends, preceding short connecting rod (40) respectively, and another intermediate connecting rod (43) two ends are rotationally connected with long connecting rod (42) other end, back short connecting rod (40) respectively.

3. according to the sick bed base of control brake gear in claim 1 or the 2 described bands, also be provided with two connecting rods (10) between its feature pro-, rear side two crossbeams (11).

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