CN104640530B

CN104640530B - Propelling sheave for hospital bed

Info

Publication number: CN104640530B
Application number: CN201380048339.2A
Authority: CN
Inventors: L·谢约巴耳
Original assignee: Linet sro
Current assignee: Linet sro
Priority date: 2012-09-14
Filing date: 2013-09-17
Publication date: 2017-08-11
Anticipated expiration: 2033-09-17
Also published as: EP2895127A1; CN104640530A; CZ306244B6; CZ2012638A3; PL2895127T3; ES2649164T3; WO2014040578A1; EP2895127B1

Abstract

A kind of hospital bed Q) include being fixed on the propelling sheave (2) of the underframe (3) of sick bed (1), the propelling sheave can be moved in storage location and using between position.Propelling sheave (2) is located through using pedal (4) to realize, triggering to pedal causes draw bar (5) to move, then connection member is acted on, the connection member includes cam (14), guiding part (15) and rod member (17).In order to promote propelling sheave (2) against ground, compliant member (10) has been used, the framework of its one end and sick bed is attached, and the other end is attached with molding part (8).

Description

Propelling sheave for hospital bed

Technical field

The present invention relates to a kind of propelling sheave, it causes sick bed is being carried through into hospital using the staff of hospital bed When, carrying out guiding to sick bed becomes easier.These propelling sheaves are referred to as attached wheel or can also be referred to as the 5th wheel.As A part for bed undercarriage, propelling sheave affects the operation of hospital bed.

Background technology

In the field of hospital bed, the 5th wheel represents the general state of prior art.By the feature of the 5th wheel, When sick bed is carried through into hospital, they affect the operation carried out for whole hospital bed, and by this way So that the work of corpsman,hospital is easier.The transport situation of hospital bed and movably bearing on four wheels The running situation of loading is relevant, and this four wheels has two and rotates freely axle.First, which rotates freely axle, makes wheel produce reality Rotation, allow that the loaded article forward or is moved rearwards by relative to ground.Fixture of second rotary shaft of wheel from wheel The underframe of the loaded article is through to, the rotary shaft is perpendicular to ground and allows the lateral rotation of wheel.In this structure of wheel In, people's operation sick bed is highly difficult, and staff must go before when cornering, so that the disease with heavy load Bed can turn.Such as by conventional shopping cart, one can see that it is same the problem of.

This problem can be solved by two ways.The first possibility is that will have positioned at transmission from staff Second rotary shaft of two trailing wheels of the side of thrust is pinned.The method of two side locks of wheel one is well known in the prior art. Operation is easier to make for the sick bed for entering line-locked wheel by this way.

Another mode for solving this technical problem is that the 5th wheel is added on underframe, and the 5th wheel is located substantially at this The centre of individual underframe, and between two pairs of basis wheels.

Then the 5th wheel is located in the centre of underframe and produces rotary shaft.In some solutions, these wheels are also wrapped The driver with power set is included, the work to save staff.

In fact, both approaches are generally designed as, the rotary shaft set up temporarily can be easily removed.If We need not transport sick bed at a distance and only if a small range is operated, this is necessary in practical operation.Thus enter Hand, it is clear that foregoing technical scheme must include two states：State and disease that interim rotary shaft for sick bed is set up Bed does not have the state of this axle.

For the 5th takes turns, there are several different technical schemes to describe use position of the 5th wheel from upper position to bottom The control mode put, wherein on the position on top, the wheel is in storage location, on the use position of bottom, the wheel and ground Face is contacted.The movement of the wheel can be realized by additional driver with Electronic Control, decline wheel, or Person is manually operated, and generally has the conjunction that the sliding equipment that power is reached into the 5th wheel from pedal is carried out in this case Suitable transmission.Patent US5987671 shows a kind of method.This documents describes the 5th wheel is displaced into lower position, used The mechanical device of foot-operated board component, the foot-operated board component has used bar, rod member and the draw bar of longitudinal direction, the power of pedal rotation It is converted into the displacement of the wheel.

Utility model CZ17216 shows another 5th wheel.In this case, pedal, arm, press member and suitable When the spring of positioning constitutes the 5th wheel assembly.File US6772850 shows a kind of pattern, wherein, the movement of the 5th wheel is electric Control gas.

Prior art shows several shortcomings that the 5th wheel has for these technical schemes and other.The automatically controlled version So that the realization of whole function is costly, and they are only used with such complete automatically controlled hospital bed combination.Just From the point of view of known technical scheme, further drawback is to ride independently of the main sick bed that study plot is used for braking sick bed Plate.In addition, just in accordance with the solution of such case from the point of view of, sick bed has been designed to because solution is complicated and causes sick bed Price remains unchanged very high.

The content of the invention

Embedded bed undercarriage, largely eliminate for the propelling sheave controlled by pedal of hospital bed The problem of stating.Pedal is attached by the draw bar part related with other with propelling sheave, including rod member, cam and guiding Part.Cam is attached with draw bar, and guiding part is attached with rod member.In alternative embodiments, cam can be with Rod member is connected, and guiding part can be attached with draw bar.

The rod member is also attached with molding part, and the molding part is attached with propelling sheave.

The present invention can also have additional compliant member, and it is supplied between propelling sheave and ground and preferably contacted.Should Compliant member can be the bar with given shape, spring either torsion spring.

Brief description of the drawings

Fig. 1 is shown with underframe and the 5th hospital bed taken turns.Fig. 2 shows the horizontal stroke of the brake component component of hospital bed Section.Fig. 3 shows the 5th wheel with lever, guiding part and cam.Fig. 4 shows the left part of the 5th wheel loaded on underframe The detailed view of fixture.Fig. 5 shows the detailed view of the right part fixture of the 5th wheel loaded on underframe.Fig. 6 shows tool There is the detail drawing of the part of cam, the cam is attached with draw bar.Fig. 7 shows the detail drawing of the part with guiding part, The guiding part is attached with draw bar.

Embodiment

Fig. 1 shows the hospital bed 1 with the 5th wheel 2 according to the present invention, wherein the 5th wheel 2 and hospital bed 1 Underframe 3 is attached.A part for underframe 3 is still used for the pedal 4 for controlling brake component.Hospital bed 1 uses and is integrated in wheel The brake component of sub-component is braked.The actual brake component of the underframe 3 of hospital bed 1 is well known in the prior art.The head of underframe 3 Brake component be attached by hex nut, it is identical with the connected mode of the brake component of the leg of underframe 3.It is head and leg Brake component is connected by the draw bar 5 through underframe 3.Fig. 2 shows this arrangement.Therefore, the whole braking of hospital bed 1 Part component is operated with being mutually connected, that is to say, that after a brake component of underframe 3 is applied, hospital bed 1 remaining brake component is automatically applied.It is converted into as the rotary motion of the hex nut produced by the motion of pedal 4 For the linear motion of draw bar 5.In the other end of underframe 3, which results in the rotation of second hex nut and remaining two The application that brake component is carried out by the hex nut.

Fig. 3 shows the connection that the component and its framework with hospital bed 1 of the 5th wheel 2 are carried out, and the connection is substantially Position in the middle of underframe 3.Keeper 6 and keeper 7 serve as the component of the 5th wheel 2 being fixed to framework.The He of keeper 6 Keeper 7 is firmly fixed at underframe 3 by bolt, and is used as the supporting of the other parts for the 5th wheel 2.Keeper 6 with The definite form of keeper 7 is different from each other, that is to say, that functionally the keeper 6 positioned at hospital bed side is with keeping Part 7 is different.Both exact functions of keeper 6 and keeper 7 and their connections with mechanism other parts are later Description in this it appears that.Used 5th wheel 2 is fixed securely with hollow molding part 8, and the molding part is set up Through the connection of the framework of underframe 3, the fixed form of wherein keeper 6 and keeper 7 and underframe 3 can protect for molding part Rotated freely in gripping member 6 and keeper 7.Molding part 8 has been used to take turns 2 modes being fixedly connected with the 5th, the rotation of molding part 8 makes Wheel is obtained to be moved relative to ground.Molding part 8 is formed at cast, cell type section or other suitable shapes.Therefore, Five wheels 2 can be moved between the two positions.It can be referred to as on first position of storage location, the 5th 2, wheel It is not in contact between the position away from ground, therefore the 5th wheel 2 and ground.If the 5th wheel 2 is located on this storage location, The point of rotation of the hospital bed in the centre position of underframe 3 just without auxiliary, but sick bed can be moved freely.This bit of storage Put and favorably locate, such as, if staff is needed to side mobile hospital sick bed 1.

The 5th is caused to take turns the 2 use positions for being reduced to bottom by the rotation of molding part 8, the 5th wheel 2 is firm with the molding part Ground is fixed.After the rotation of molding part 8, the 5th wheel 2 is prompted to close with ground, and establishes the auxiliary of hospital bed 1 Help rotary shaft.In this position, making every effort to promote of being changed make the 5th wheel 2 close with ground by mechanism described below.

Draw bar 5 runs through the side of underframe 3 on hospital bed, and with keeper 6, it is constituted for molding part 8 First supporting-point, the molding part is located in the first back-up ring 11 at this.First back-up ring 1 is fixably attached to keeper 6, and composition pair In the supporting of molding part 8.As being evident that in Fig. 4, then in the insertion of supporting member 9 keeper 6.Supporting member 9 is with protecting Gripping member 6 is fixed securely, and the supporting member includes an opening, for inserting compliant member 10.

Fig. 5 shows the second keeper 7, and the opposite side of it and the framework of underframe 3 is attached.Second keeper 7 includes Second back-up ring 12.In this side, molding part 8 is attached by linkage section 13 with compliant member 10.Linkage section 13 is manufactured into it The groove of gear shaping and molding part 8 coordinate, and linkage section 13 further comprises two grooves coordinated with compliant member 10.

In the first end of the component of the 5th wheel 2 shown in Fig. 4, compliant member 10 is by keeper 6 relative to hospital bed 1 The framework of underframe 3 be fixed.At the second end of the component of the 5th wheel 2 shown in Fig. 5, compliant member 10 passes through linkage section 13 It is fixed in molding part 8.The structure of compliant member 10 is that it can produce torque and cause the rotation of molding part 8, so as to promote the 5th Wheel 2 is close to ground.

Compliant member 10 includes the solid bar of shaping, and its rotation mode in molding part 8 is that it, which produces torque, is used for Molding part 8 is rotated, and promotes wheel 2 to be gone to ground.By using being fixedly secured for compliant member and supporting member 9 And being fixedly secured in opposite side and linkage section 13, compliant member maintains this rotatable state.Therefore should be in certain shape The rotatable bar of shape, the function with torsion spring.Torsion spring can be used to replace shaping in alternative embodiments Part.One of ordinary skill in the art substantially knows how to set such a torsion spring, so that it, which can be realized, promotes the 5th The function that wheel 2 is moved to landing ground direction.In another alternative embodiment, conventional spring can be used, its one end with The appropriate location of the framework of underframe 3 is attached, and its other end carries out 8 with molding part and is connected.

Fig. 3 is shown provides power to the 5th wheel 2, and converts a force into the device of the rotation of molding part 8.According to this hair Bright, the 5th wheel 2 can be directly controlled by any braking footrest 4.This takes turns the company between 2 systems and draw bar 5 by the 5th Completion is fetched, side of the draw bar along underframe 3 is advanced.Connection illustrated in fig. 3 can be realized by various devices.This A little attachment means include cam 14, the first guiding part 15, the second guiding part 16 and rod member 17.Cam 14 and the jail of draw bar 5 Admittedly be fixed, therefore after the direction that is locked with brake component of any pedal is triggered, draw bar 5 and thus cam 14 Shifted both with respect to guiding part 15.First guiding part 15 is attached securely by rod member 17 with molding part 8.Guidance part Part is connected so as to which it can be rotated by rotating freely axle with lever 17.In a preferred embodiment, pedal 4 can be with With three positions, wherein first position is arranged for being braked, second position is used to unclamp brake component, and the 3rd Individual position is used to trigger the 5th wheel 2.

As in Fig. 6 it can be seen that, cam 14 is shaped as, when rod member 17 and cam 14 are moved towards each other, first Guiding part 15 is raised above relative to draw bar 5, because, it is attributed to rotating freely for the first guiding part 15, first Groove of the guiding part along cam 14 is moved up.Definite groove goes for 4 three positions of pedal on cam 14 The control put, so that only the 5th wheel 2 under the pattern of needs of pedal 4 is just earthward moved.Second guiding part 16 is located at The bottom of cam 14, it is therefore prevented that draw bar 5 is with cam 14 because resistance drops downwards, and the resistance is by rod member 17, molding part 8 and soft Produced by the system of property part 10.Second guiding part 16 is attached by free rotating shaft with keeper 6, and the free rotating shaft is held Perhaps the second guiding part 16 can be rotated when bearer cams 14, and guiding part enters line slip along it and goes back structure Into the firm support for cam 14.Generally, guiding part can be formed by roller, and the roller has groove either tooth Wheel.Any shape manufactured by the material of low friction performance can be used in one of ordinary skill in the art, to be used as guidance part Part 16.The outward appearance and shape of cam 14 go for these individual changes.

, it is apparent that when pedal 4 is moved, molding part 8 is rotated, therefore from the description above of the present invention 5th wheel 2 is moved between use and storage location.In addition, on the use position of bottom, compliant member 10 promotes the 5th wheel 2 Downwards until ground, even if therefore in adverse conditions, contact of the 5th wheel with ground can also be realized, such as in out-of-flatness Or easily on slippery floor.

As can see in Fig. 7, in another preferred embodiment, the position of the guiding part 15 of cam 14 and first Putting can be opposite.It can be connected with the first guiding part 15 for rotating freely axle with draw bar 5, cam 14 can be consolidated securely Due to rod member 17.

In a preferred embodiment, in whole mechanism, including draw bar 5, the framework that underframe 3 can be integrated in, so Need not just there is the second guiding part 16, because draw bar 5 can be supported in the framework of used underframe 3.

Claims

1. one kind has the sick bed (1) of propelling sheave (2), the propelling sheave (2) can move between at least two positions, wherein On first position, propelling sheave (2) is not contacted with ground, on second position, and propelling sheave (2) is connect with ground Touch, the propelling sheave (2) includes underframe (3), at least one pedal (4), for the motion of pedal (4) to be transferred into rod member (17) draw bar (5), the rod member (17) is attached with propelling sheave (2), and the draw bar (5) is connected with attachment means Connect, the attachment means include cam (14), guiding part (15) and for make propelling sheave (2) can at least two positions it Between the rod member (17) that moves, it is characterised in that the guiding part (15) by means of the rod member (17) and molding part (8) firmly Ground is connected, and the molding part (8) includes compliant member (10), and the molding part is consolidated securely with the propelling sheave (2) Fixed, the compliant member (10) forces propelling sheave (2) to be resisted against ground, one end of the compliant member (10) in the position of lower section It is fixed securely with the framework of underframe (3), and the other end is consolidated securely with the molding part (8) transverse to underframe (3) It is fixed.

2. sick bed (1) according to claim 1, it is characterised in that the cam (14) is attached with draw bar (5), The guiding part (15) is attached with rod member (17).

3. sick bed (1) according to claim 1, it is characterised in that the cam (14) is attached with rod member (17), institute Guiding part (15) is stated to be attached with draw bar (5).

4. sick bed (1) according to claim 1, it is characterised in that the guiding part (15) is roller.

5. sick bed (1) according to claim 1, it is characterised in that the guiding part (15) is the reeded roller of tool.

6. sick bed (1) according to claim 1, it is characterised in that the guiding part (15) is gear.

7. sick bed (1) according to claim 1, it is characterised in that the compliant member (10) is shaped bar.

8. sick bed (1) according to claim 1, it is characterised in that the compliant member (10) is torsion spring.

9. sick bed (1) according to claim 1, it is characterised in that the compliant member (10) is spring.