DE202023100016U1 - Mechanical hand drive device - Google Patents

Abstract

Mechanical manual drive device with two string-shaped or band-shaped, separately operable actuating elements (4, 5) for turning a drive hub (29) to the right or left, through which an external drive shaft (2) passes and which can be fixed with it, and at least one spring element (18 ) for generating return forces for the actuating elements (4, 5), characterized in that on the drive hub (29) there is a shoulder (28) for positioning lateral bearing elements (27) for separate freewheel devices, via the spaced bearing elements (27) are separate freewheel devices on each side, which consist of a first part (36) and a second part (37), rotatably mounted, with the second part (37) of the freewheel devices overlapping the first part (36), and that the second part (37 ) of the freewheel devices has an actuating element reservoir (13, 14), at the same time the actuating element reservoirs (13 , 14) covers the spring element (18).

Description

The invention relates to a mechanical manual drive device with two strand-shaped or band-shaped, separately operable actuating elements for turning a drive hub to the right or left.

With the DE 20 2020 105 110 U1 a hand-operated, mechanical drive device with two separate actuators for turning a drive train to the right and left has become known, the actuators each acting on separately mounted transmission toothed elements, the transmission toothed elements are connected to a common energy storage device or to separate energy storage devices, and the transmission toothed elements have drive carriers activated by the actuators acting on coupling rollers in such a way that the drive train or a drive shaft of a transmission can be rotated by the drive device.

Another hand-operated, mechanical drive device can the EP 3 964 680 A1 be removed. This hand-operated, mechanical drive device has a drive wheel, which is mounted between two independent drive trains, in order to perform a direction-changing rotation. The drive wheel is provided with transmission attachments on both sides in an axial alignment. A bore passes through the transmission attachments and the drive gear wheel, and bearings are arranged on the transfer attachments, which are held laterally with the drive gear wheel in bearing plates, and that actuation elements selectively apply force to the drive trains in such a way that the drive wheel can be set in rotation is, wherein the drive trains are associated with winding devices, which are each mounted on one side on a common axis and on the other hand via bearings on the transfer lugs.

The use of mechanical manual drive devices is thus known and is used either as an auxiliary drive in the event of a power failure in power-operated devices or machines, such as gates or the like, or as lifting devices in the workshop or service area.

In order to ensure universal application, it is therefore the object of the invention to create a mechanical manual drive device that requires only a small amount of space in order to be used in stationary and mobile devices for different uses, in particular for driving rotary axes.

The object of the invention is achieved by the features of claim 1. The dependent claims following claim 1 reflect a further embodiment of the idea according to the invention.

The mechanical hand drive device, hereinafter referred to simply as a hand motor, has a central drive hub on which there is an attachment for holding laterally mounted bearing elements. Disposed across the spaced bearing elements on each side are respective separate freewheel devices consisting essentially of first and second parts. This enables a very compact design, because two bearing elements in the form of ball bearings are attached on each side next to the attachment on the drive hub. The freewheel devices are arranged in a pivoted manner on each side of the bearing elements. Each freewheel device consists essentially of two components which are arranged separately on the bearing elements. The two parts of the freewheel device are designed in such a way that they can work together. At the same time, the second parts of the freewheel device each have an actuating element reservoir, so that either a rope-like or a band-like actuating element is arranged on each side for turning the drive hub to the right or left. The second part of the freewheel device has been designed in such a way that a common spring element is covered by the actuating element reservoir on each side. By using only one spring element, the space required for the hand motor is significantly reduced and can also be manufactured more cost-effectively. The spring element is designed as a spiral spring. The spring element, which is connected at the end to the two fastening element reservoirs, can generate a preload set during assembly, so that in any case when the actuating elements are actuated, they are automatically returned to their basic position. As a result, the actuating element is only present in sections and is not designed as an endless element, as is the case in the prior art.

The actuating elements are fixed in an exchangeable manner in the actuating element reservoirs in order to be able to replace them in the event of wear.

Due to the fact that the actuating element reservoirs are connected to the second parts of the freewheel devices, a part of the active device for the freewheel device can be formed underneath in the form of beveled blocking surfaces within a round recess. These blocking surfaces work with pivoted blocking rollers, which are the first part of the freewheel device are arranged rotatably together so that when one of the actuating elements is actuated, the other actuating element cannot be operated at the same time. Furthermore, the secure positioning of the drive hub is achieved through the separately available freewheel devices. In order to achieve this, a spring is preferably arranged on the second part of the freewheel device in such a way that in any case in the non-actuated version of the drive hub the locking rollers are securely set against the beveled locking surfaces and can thus block the drive hub, for example.

In a further preferred embodiment, it is also possible that in the rest position the drive hub is not automatically fixed or blocked by the locking rollers engaging in the locking surfaces. Such an embodiment is required in particular when using the manual motor, for example if it is an auxiliary drive in connection with a power-operated or non-power-operated building lock or a machine that is itself equipped with a locking device, e.g. a worm gear or the like, in the rest position are.

The freewheel devices are equipped with a path limiter, which preferably essentially allows one rotation of the drive hub when one of the actuating elements is pulled. Thereafter, the drive shaft or the like can be automatically locked or released in the rest position of the mechanical manual drive device.

The actuators wound on the actuator reservoirs are guided substantially to the center of the hand motor housing by an actuator guide after exiting the actuator reservoirs. This is achieved by laterally attached plastic injection parts, in which guide and pressure rollers are mounted on the underside of the roller axles. Each side, i.e. each drive train, is assigned a pressure roller and a guide roller. After leaving the pinch roller and guide roller outside of the hand motor, the cord or ribbon actuator can be operated by suitable operating levers or devices to achieve rotational movement of the drive hub.

Depending on the embodiment, the mechanical manual drive device according to the invention can therefore have a fixed or loose drive hub in the rest position. The desired embodiment is determined by the design of the freewheel device. This makes it possible for an adaptation to a building closure or a machine or even existing machine parts to be partially automated by accommodating a drive shaft with the drive hub of the manual motor.

• 1 eine geschlossene Ausführung eines Handmotors;
• 2 wie 1, doch mit Entfernung von Gehäuseteilen;
• 3 eine Teilansicht eines Antriebsstranges;
• 4 eine Antriebsnabe mit gegenüberstehenden, getrennt ausgeführten ersten Teilen von Freilaufvorrichtungen;
• 5 eine Teilansicht des Handmotors unter Entfernung der zweiten Teile der Freilaufvorrichtung;
• 6 eine Antriebsnabe;
• 7 eine Teilansicht des Handmotors mit einem Antriebsstrang;
• 8 die Ausführung einer Antriebsnabe und der erste Teil der Freilaufvorrichtung;
• 9 die Ausführung des zweiten Teiles der Freilaufvorrichtung;
• 10 eine Darstellung einer Betätigungselementführung;
• 11 ein Handmotor ohne Gehäuseteile.

The invention is explained in more detail below with reference to a possible exemplary embodiment illustrated in the figures.

• 1 a closed version of a hand motor;
• 2 How 1 , but with removal of housing parts;
• 3 a partial view of a drive train;
• 4 a drive hub with opposing, separately designed first parts of freewheel devices;
• 5 a partial view of the hand motor with removal of the second parts of the freewheel device;
• 6 a drive hub;
• 7 a partial view of the hand motor with a drive train;
• 8th the execution of a drive hub and the first part of the freewheel device;
• 9 the execution of the second part of the freewheel device;
• 10 an illustration of an actuator guide;
• 11 a hand motor without housing parts.

In the 1 a mechanical hand drive device 1, hereinafter referred to as a hand motor, is represented in a closed form by a housing 3 which is essentially in two parts. An external drive shaft 2 can be inserted into the housing 3 on both sides or only on one side, which in a groove 8 contained within the hand motor 1 with a tongue 9 offers the possibility of connecting the hand motor 1 to external devices. These include, in particular, building locks of any type with their relocatable door or gate leaves. Other uses of the hand motor 1 with machines or machine parts with their own locking device or without a locking device in the rest position are possible. The drive shaft 2 is usually not part of the hand motor 1.

In order to be able to carry out such a change of location of devices of all kinds, actuating elements 4 and 5 protrude from the housing 3 out of here. These actuating elements 4, 5 make it possible to set the drive shaft 2 in a right-hand or left-hand rotary movement. For this purpose, the actuating elements 4, 5 are guided via roller axles 6 and 7 on the guide rollers 11 and pressure rollers 12 and guide elements interacting therewith. In order that the outlets of the actuating elements 4 and 5 can emerge quasi below the drive shaft 2, actuating element guides 10 are present for the actuating elements 4 and 5 on the side of the housing. These actuating element guides 10 are preferably designed as injection-molded plastic parts and can therefore be easily adapted to the actuating elements used.

The representation of 2 essentially corresponds to the 1 , but the housing 3 has been removed so that the mechanical components operatively connected to the drive shaft 2 are visible. These are in particular two opposing actuating element reservoirs 13, 14, on which the actuating elements 4 and 5 are wound in the rest position. The actuating elements 4, 5 can be designed as strand-like or band-like elements, for example one of the actuating elements 4, 5 being used for opening and the other actuating element for closing the building closure. As a result, the operator has direct knowledge of which of the actuating elements 4, 5 has to be operated and does not have to determine the direction of actuation first by experiment, as is the case with an endless chain in the prior art. In addition to marking the actuating elements 4, 5 in color, a handle on the end or the like can also have a marking. Because the hand motor 1 essentially consists of two identical, separate drive trains, is in the 3 only one of the drive trains is reproduced below, because the second drive train is of the same design. Here in the 3 visible that the actuating element 5, which is designed as a band-shaped element in this case, is guided by the guide roller 11 with lateral collars and the opposing pressure roller 12 to the actuating element reservoir 14. The pressure roller 12 engages between the lateral collars of the guide roller 11 in order to ensure that the actuating element 5 is guided effectively.

Below the actuating element reservoir 14 there is a substantially bell-shaped cavity into which a spring element 18 dips. This spring element 18 is connected to the actuating element reservoirs 13 and 14 with its fixings 15 which are formed on the end. As a result, an alternating drive can be carried out with one spring element 18 in two directions of rotation.

The area of the hand motor 1, which is located below the spring element 18, can in a single representation of 4 be removed. In the 4 essentially the components that are located directly on the drive shaft 2 are shown. On the drive shaft 2 sits directly a drive hub 29 of the 6 can be taken separately. This drive hub 29 has an unspecified lug in the middle, to which a further lug adjoins in stepped form at the side at each end, these lugs with a reduced diameter ensuring that the freewheel devices for actuating the actuating elements 4 and 5 can also work properly. With a further reduced outer diameter, projections 28 are present on the side of the drive hub 29, which are used for mounting the bearings. The first part 36 of the freewheel device is supported on an inner bearing. The second part 37 of the freewheel device is mounted on the second bearing with an outer ring 22, 24, which serves to hold or fix the entire mechanism of the hand motor 1 within the housing 3 and secures the structure. This outer ring 22 has a projection 38 which engages in the housing 3 for centering within a bore, the outer ring 22 being screwed to the housing 3 by the fastenings 23 at the same time.

On its outer circumference, the first part 36 of the freewheel device has a plurality of locking roller bearings 21 in which locking rollers 20 are embedded in a rotatably mounted manner. these blocking rollers 20 cooperate with blocking surfaces 35 running at an oblique angle, which are located within a bell-like design of the second part 37 of the freewheel device, so to speak, below the actuating element reservoirs 13, 14.

As already indicated, the spring element 18 is used so that the actuating elements 4, 5 can also be returned to their rest position after actuation. For this it is necessary that the spring element 18 is prestressed. The preload can be achieved by making one or more turns in the unseated condition of the actuator reservoirs. The actuating travel is limited by a travel limiter 25, which is located on the first part 36 of the freewheel device, in conjunction with a stop 17, which is located on the outer ring 22. This path limitation 25 makes it possible for the actuating element 4 to perform a rotation during a pulling movement with a simultaneous release of its freewheel device. At the time when the tensile force on the actuating element 4, 5 is withdrawn again, the second part 37 of the freewheel device rotates in its off position gear position and is simultaneously transferred to the locking position of the freewheel due to the presence of a spring 19 . The spring 19 is attached on the one hand to a release spring holder 33 of the first part 36 of the freewheel device and to the corresponding actuating element reservoir 13 or 14 . This ensures that the blocking rollers 20 press against the beveled blocking surfaces 35 and thus the drive hub 29 and thus also the drive shaft 2 are fixed at the same time.

The arrangement of the spring element 18 on the two freewheel devices for the operating directions are the 5 again.

In a further preferred embodiment, a rotational movement can be performed when the drive hub 29 is in the rest position, which means that the freewheel device is not active. This could, for example, in the embodiment 11 be the case. If the projection 39 moves away from the stop 17 by pulling on the actuating element 5, after a few millimeters the locking rollers 20 engage in the locking surfaces 35 of the freewheel device, so that if the actuating element 5 is subjected to a further force load, the drive hub 29 is set in rotation for that long How maximum one rotation of the actuating reservoir 14 takes, because then the driver 39 on the other side of the stop 17 comes to rest. The spring element 18 then acts and rotates the actuating reservoir 14 again in the opposite direction up to the stop 17. In this section, the effect of the freewheel device is canceled again. By applying force again to the actuating element 5, the drive hub 29 is reactivated in the same direction of rotation. It goes without saying that when a force is applied to the actuating element 4, the second opposite freewheel device is activated, and the drive hub 29 would then rotate in the opposite direction. This preferred embodiment can be used, for example, in power-operated building closures with a locking device for holding the position of the building closure.

For the construction of the freewheel is particularly on the 8th and 9 referred. Here is in the 8th to recognize the first part 36 of the freewheel device. The locking rollers 20 are mounted in locking roller bearings 21 in one approach of the first part 36 . The release spring holder 33 for the one-sided attachment of the spring 19 can also be seen. The second part 37 of the freewheel device can be seen below the actuating element reservoir 13 , 14 with the beveled blocking surfaces 35 . The second release spring holder 42 for the spring 19 can also be seen here. The alternating attachment of the spring 19 to the first part 36 and the second part 37 of the freewheel device makes it clear that the drive hub 29 is blocked when the actuating elements 13, 14 are in the rest position.

The embodiment of the ribbon actuator described in this embodiment is secured with an actuator retainer 34 held as individual pieces in the actuator reservoirs 13,14. The actuating element attachment 34 consists of a flat component which is inserted laterally within the actuating element reservoirs 13, 14 via a depression. However, before the actuating element fixing 34 is used, the actuating element 4 or 5 used is wrapped around once, so that a self-locking effect occurs when fixing here.

The actuating element guides 10 connected to the housing 3 in the lower part of the hand motor 1 are shown individually in FIG 10 played back. The actuating element guide 10 has guides 31 on the inside, so that the actuating element 4 or 5, when it is unwound from the outer diameter of the actuating element reservoir 13 or 14, is guided here approximately to the middle of the hand motor 1. In this area, the roller axles 6 and 7 can be supported and fastened via a torsion-proof roller axle bearing 30 . For the actuating element reservoirs 13, 14 there is a guide 40 in the actuating element guides 10 here.

In the 11 the hand motor 1 is shown again without its housing 3 . It is clear here that the travel limiters 25, 26 on each side rest against the stop 17 of the outer rings 22 or 24 on the one hand. However, in order to be able to perform a rotational movement of the actuating reservoir 13, 14, it is necessary for the corresponding displacement limiter 25, 26 to bear against a driver 39 on the actuating reservoir 13, 14. The fixing of the spring element 18 within an opening 16 with the fixing 15 can also be seen from this view. The lower part of the manual motor 1 is formed by the two lateral actuating element guides 10, which accordingly lead the actuating elements 4 and 5 to the middle of the manual motor 1.

The actuating element guides 10 are held on the one hand by non-designated screw connections and bores 32 and, moreover, in the housing 6 by housing receptacles 41 or projections.

Reference List

1

Mechanical hand drive device (hand motor)

2

drive shaft

3

Housing

4

actuator

5

actuator

6

roller axis

7

roller axis

8th

groove

9

Feather

10

actuator guide

11

leadership role

12

pinch roller

13

actuator reservoir

14

actuator reservoir

15

determination

16

breakthrough

17

attack

18

spring element

19

Feather

20

locking roller

21

locking roller bearing

22

outer ring

23

attachment

24

outer ring

25

travel limitation

26

travel limitation

27

bearing element

28

Approach

29

drive hub

30

roller axis bearing

31

actuator guide

32

drilling

33

release pen

34

actuator definition

35

restricted areas

36

First part

37

Second part

38

Approach

39

driver

40

guide

41

housing recording

42

release spring mount

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 202020105110 U1 [0002]
• EP 3964680 A1 [0003]

Claims (10)

Mechanical manual drive device with two string-shaped or band-shaped, separately operable actuating elements (4, 5) for turning a drive hub (29) to the right or left, through which an external drive shaft (2) passes and which can be fixed with it, and at least one spring element (18 ) for generating return forces for the actuating elements (4, 5), characterized in that on the drive hub (29) there is a shoulder (28) for positioning lateral bearing elements (27) for separate freewheel devices, via the spaced bearing elements (27) are separate freewheel devices on each side, which consist of a first part (36) and a second part (37), rotatably mounted, with the second part (37) of the freewheel devices overlapping the first part (36), and that the second part (37 ) of the freewheel devices has an actuating element reservoir (13, 14), at the same time the actuating element reservoirs (1 3, 14) covers the spring element (18). manual drive device claim 1 , characterized in that the spring element (18) is provided with end fixings (15) which engage in openings (16) in the fastening element reservoirs (13, 14). Manual drive device according to claims 1 and 2 , characterized in that the spring element (18) is designed as a spiral spring. manual drive device claim 1 , characterized in that within a round recess in the second part (37) of the freewheel device, beveled blocking surfaces (35) are formed, which interact with the first part (36) of the freewheel device in a rotatably mounted blocking rollers (20) as a freewheel device. Manual drive device according to claims 1 and 4 , characterized in that the second part (36) of the freewheel device has a spring holder (33) for end attachment of a spring (19), the first part (37) of the freewheel device being connected to the other end of the spring (19). Manual drive device according to claims 1 and 4 , characterized in that the second part (36) of the freewheel device is provided with a travel limiter (25) or (26) for the return of the spring element (18), which rests against stationary stops (17) when the hand motor (1) is in the rest position . Manual drive device according to claims 1 and 6 , characterized in that the stop (17) is arranged on the circumference of an outer ring (22, 24), the outer ring (22, 24) being placed with one end face against the bearing element (27) and on the other hand within a bore of the The housing (3) is embedded and secured to the housing (3) from the outside by means of fasteners (23). manual drive device claim 1 , characterized in that the string or band-shaped actuators (4, 5) are guided in the lower part of the housing (3) on each side by actuator guides (10). manual drive device claim 8 , characterized in that the actuating element guides (10) are designed as injection-moulded plastic parts and that the roller axles (6, 7) engaging in roller axle bearings (30) are held via bores (32) in connection with fastening elements. manual drive device claim 9 , characterized in that on the roller axles (6, 7) guide rollers (11) and pressure rollers (12) for the strand or band-shaped actuating elements (4, 5) are mounted.

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