Universal driver housing

Abstract

The invention relates to a series of gear units having a first gear unit (101) and a second gear unit (201); wherein the first gear unit (101) and the second gear unit (201) each have an input shaft (103, 203), a housing (105, 205), a support structure (107, 207) fixed in the housing and at least two bearings (109a, 109b, 209a, 209b) by means of which the input shaft (103, 203) is rotatably supported in the support structure (107, 207); and wherein the at least two bearings (109a, 109b) of the first gear unit (101) and the at least two bearings (209a, 209b) of the second gear unit (201) are each of the same structural type. The structural type of the at least bearings (109a, 109b) of the first gear unit (101) is different from the structural type of the at least bearings (209a, 209b) of the second gear unit (201); wherein the support structures (107, 207) are of the same structure.

Description

Technical Field

[0001] This invention relates to a series of transmission device structures having a first transmission device and a second transmission device. Background Technology

[0002] In transmission devices produced in small batches, the housing must be designed according to the customer's specifications. Therefore, the support for the input shaft must be matched to the load it will bear. This results in different types of supports for the input shaft. These different types of supports, in turn, necessitate different designs for the transmission housing, thus increasing manufacturing costs. Summary of the Invention

[0003] The objective of this invention is to reduce the manufacturing cost of transmission devices. This objective is achieved through a series of transmission device structures according to the invention, comprising a first transmission device and a second transmission device. Preferred improvements are obtained from the following description and the embodiments shown in the accompanying drawings.

[0004] A transmission structure series is the sum of at least two transmission devices that are coordinated with each other regarding at least one technical feature. At least two transmission devices form a system.

[0005] According to the transmission device structure series of the present invention, the first transmission device and the second transmission device respectively have an input shaft, a housing, a support structure and at least two, preferably exactly two, bearings, wherein the input shaft is supported in the support structure by means of the bearings.

[0006] The input shaft is configured to be subjected to an input torque. At least a portion of the input shaft is located outside the housing. This portion is subjected to the input torque.

[0007] The support structure is constructed to bear and transmit forces. The support structures of the first and second transmission devices are fixed within their respective housings. The fixing of the respective support structures within the housings is preferably rigid, meaning that relative movement between the support structures and the housings is impossible. The support structure is constructed to bear and transmit the holding force introduced into the support structure via at least two bearings to the transmission device housing.

[0008] The support structure preferably forms part of its respective housing. This means that the support structure, together with the housing of its respective transmission device, encloses a cavity (the interior of the transmission device). At least two bearings are preferably arranged within this cavity.

[0009] At least two bearings in the first transmission device have the same structural type. Similarly, at least two bearings in the second transmission device have the same structural type. Bearings with the same structural type belong to a group of bearings with one or more technical features and the same design. That is, all bearings in this group have definite technical features. These technical features are designed in the same way in all bearings in the group. Thrust bearings, radial bearings, radial-thrust bearings, rolling bearings, ball bearings, tapered roller bearings, needle roller bearings, barrel roller bearings, and sliding bearings constitute such a group, for example. For example, at least two bearings in the first transmission device may be ball bearings, while at least two bearings in the second transmission device may be tapered roller bearings.

[0010] According to the present invention, the structural types of at least two bearings in the first transmission device are different from those of at least two bearings in the second transmission device. That is, the structural types of at least two bearings in the first transmission device and at least two bearings in the second transmission device are different.

[0011] If at least one distinguishing technical feature exists, then the first structural type and the second structural type of the bearing are different. Here, a technical feature is understood to express that it is the same in both the first structural type and the second structural type of bearing, and that the first structural type and the second structural type of bearing are different. Thrust bearings and radial bearings are structurally different. Similarly, sliding bearings and rolling bearings are structurally different. Ball bearings, tapered roller bearings, needle roller bearings, drum roller bearings, and sliding bearings are structurally different in pairs.

[0012] The support structures of the first and second transmission devices are identical. Two components are considered identical if their physical parameters (especially regarding their materials) and geometric properties are consistent within the range of manufacturing tolerances that may arise.

[0013] Using support structures with identical designs has advantages due to cost advantages achieved through economies of scale. This is especially true if castings, which are costly to manufacture, are used as support structures. Different bearing types allow for the customization of various transmission devices within the structural series according to the invention to suit specific customer load conditions.

[0014] According to a preferred improvement, different bearing structures can occur along with input shafts of different structures. This means that, according to the improvement, the input shafts of the first and second transmission devices are structurally different. The input shafts of the first and second transmission devices are offset from each other according to at least one physical parameter, i.e., the offset no longer falls within the range of manufacturing tolerances. The input shafts of the first and second transmission devices can be distinguished, in particular, by their component geometry.

[0015] The improvement approach follows this idea: to match customer-specific conditions by modifying inexpensive components. Input shafts are typically rotating parts, and they can be manufactured particularly cheaply compared to castings.

[0016] In a preferred embodiment, at least two bearings of the first transmission device are oriented in an X-type arrangement, and at least two bearings of the second transmission device are oriented in an O-type arrangement. This means that these bearings are radial thrust bearings.

[0017] In another preferred embodiment, the first and second transmission devices each have a cover. The cover is a mechanism for covering or closing the opening.

[0018] The covers are fixed within their respective support structures and thereby cover the openings of their respective support structures. The cover of the first transmission device is fixed in the support structure of the first transmission device. Similarly, the cover of the second transmission device is fixed in the support structure of the second transmission device. The fixing is preferably rigid, that is, relative movement between the support structure and the respective covers is impossible. A seal is preferably arranged between the support structure and the respective covers, which seals the support structure with respect to the respective covers in an oil-sealed manner.

[0019] Each input shaft extends through a cover. The input shaft of the first transmission device passes through the cover of the first transmission device; the input shaft of the second transmission device passes through the cover of the second transmission device. This means that each cover has an opening through which the respective input shaft extends. Thus, at least a portion of the input shaft is located within its respective transmission device. The portions of the respective input shaft located within their respective transmission devices and the portions located externally are arranged on different sides of their respective covers.

[0020] The covers of the first and second transmission devices are structurally identical. This achieves further economies of scale, enabling cost savings.

[0021] The cover of the first transmission device is preferably further improved in that it axially (i.e., along the axis of rotation parallel to the input shaft of the first transmission device) supports the outer ring of the first bearing among at least two bearings of the first transmission device. The cover forms an axial support for the outer ring of the first bearing. The cover preferably supports the outer ring of the first bearing to prevent movement in a direction outward from the first transmission device.

[0022] The support structure of the second transmission device is preferably further improved by utilizing a shoulder that axially supports the outer ring of the first bearing among at least two bearings of the second transmission device. The support structure of the second transmission device forms an axial support for the outer ring of the second bearing. Here, the outer ring of the second bearing is preferably supported inwards towards the second transmission device.

[0023] A shoulder is a ring-shaped portion of the surface of a component that extends between two rotationally symmetrical edges of the component, connecting them to each other. These edges form the ring-shaped boundary line of the ring.

[0024] Because the support structures of the first and second transmission devices are identical, the improved design incorporates a shoulder in the support structure of the first transmission device. This shoulder can function without forming a support for the outer ring of one of the at least two bearings in the first transmission device.

[0025] The input shaft of the first transmission device is preferably further improved using a shoulder, which axially supports the inner ring of the first bearing of the first transmission device. The shoulder forms an axial support for the inner ring of the first bearing of the first transmission device. The shoulder preferably supports the inner ring in a direction toward the outside of the first transmission device.

[0026] The input shaft of the second transmission device preferably does not have a corresponding shoulder, but is further improved by using a threaded adjusting nut. This forms a support for the inner ring of the first bearing of the second transmission device. An adjusting bolt supports the inner ring in the axial direction. Preferably, the adjusting bolt supports the inner ring towards the interior of the second transmission device. The support of the input shaft of the first transmission device by the shoulder and the adjusting threaded connection of the input shaft of the second transmission device are preferably implemented in opposite directions.

[0027] In a preferred embodiment, the support structure of the first transmission device has a groove. It is preferably rotationally symmetrical. A locating ring is inserted into the groove, forming an axial support for the outer ring of the outer ring of the second bearing, one of the at least two bearings of the first transmission device. The locating ring supports the outer ring in the axial direction. Preferably, the locating ring supports the outer ring towards the interior of the first transmission device.

[0028] Because the support structures of the first and second transmission devices are identical, the support structure of the second transmission device also has rotationally symmetrical slots. These slots may be inactive and correspondingly lack insertable locating rings.

[0029] The support structure of the second transmission device is preferably further improved using a shoulder, which acts as a support for the outer ring of the second bearing, one of the at least two bearings in the second transmission device. The shoulder supports the outer ring in the axial direction. The outer ring is preferably supported in a direction outward from the second transmission device.

[0030] Because the support structures of the first and second transmission devices are identical, the support structure of the first transmission device has a corresponding shoulder. This shoulder can either not function or form a support for the outer ring of the second bearing of the first transmission device.

[0031] In another preferred embodiment, the input shaft of the first transmission device and / or the input shaft of the second transmission device each form a shoulder. These shoulders axially support the respective inner rings of the second bearings of their respective transmission devices. Thus, they form axial supports for their respective inner rings.

[0032] The support of the input shaft by the shoulder is preferably achieved in opposite directions. Thus, the shoulder of the input shaft of the first transmission device preferably supports the inner ring of the second bearing of the first transmission device in a direction outward of the first transmission device, while at the same time, the shoulder of the input shaft of the second transmission device supports the inner ring of the second bearing of the second transmission device in a direction inward of the second transmission device. Attached Figure Description

[0033] Figure 1 and Figure 2 A preferred embodiment of the present invention is shown. Wherein:

[0034] Figure 1 The first transmission device in the series of transmission device structures is shown; and

[0035] Figure 2 The second transmission device in the series of transmission device structures is shown. Detailed Implementation Plan

[0036] Figure 1 The first transmission device 101 shown and Figure 2 The second transmission device 201 shown belongs to a common structural series. Transmission devices 101 and 201 each have input shafts 103 and 203, respectively. The housing 105 of the first transmission device 101 and the housing 205 of the second transmission device 201 have the same structure. Housings 105 and 205 each form an opening, to which support structures 107 and 207 are threadedly connected. The support structure 107 of the first transmission device 101 and the support structure 207 of the second transmission device 201 have the same structure.

[0037] The input shaft 103 of the first transmission device 101 is rotatably supported within the support structure 107 of the first transmission device 101 by means of a first ball bearing 109a and a second ball bearing 109b. Similarly, the input shaft 203 of the second transmission device 201 is rotatably supported within the support structure 207 of the second transmission device 201 by means of a first tapered roller bearing 209a and a second tapered roller bearing 209b.

[0038] Covers 111 and 211 are threaded onto support structures 107 and 207, respectively. The respective input shafts 103 and 203 extend through the central openings within covers 111 and 211. The cover of the first transmission device 101, like the cover 211 of the second transmission device 201, is sealed relative to its respective input shafts 103 and 203, thus preventing oil leakage between covers 111 and 211 and their respective input shafts 103 and 203.

[0039] The support structure 107 of the first transmission device 101 and the support structure 207 of the second transmission device 201 respectively form first shoulders 113 and 213. The first shoulder 213 of the support structure 207 of the second transmission device 201 forms an axial support for the outer ring of the first tapered roller bearing 209a. Here, the first shoulder 213 supports the outer ring towards the inside of the transmission device.

[0040] The first shoulder 113 of the support structure 107 of the first transmission device 101 is not functioning.

[0041] The input shaft 103 of the first transmission device 101 forms a first shoulder 115, which serves as a support for the inner ring of the first ball bearing 109. It faces inward to support the inner ring of the transmission device.

[0042] The cover 111 of the first transmission device 101 forms a support for the outer ring of the first ball bearing 109a. The cover 111 supports the outer ring towards the outside of the transmission device. Because the covers 111 and 211 of the first transmission device 101 and the second transmission device 201 have the same structure, the cover 211 of the second transmission device 201 constitutes a corresponding support. However, it is not functional.

[0043] The outer ring of the second ball bearing 109b is supported towards the interior of the transmission device. For this purpose, the support structure 107 of the first transmission device 101 forms a groove 117 into which a locating ring is inserted. This locating ring forms a support for the outer ring of the second ball bearing 109b.

[0044] Because the support structures 107 and 207 of the first transmission device 101 and the second transmission device 201 are identical, the support structure 207 of the second transmission device 201 also has a corresponding slot 217. However, it is not functional and therefore remains empty.

[0045] The second shoulder 119 of the support structure 107 of the first transmission device 101 forms another support for the outer ring of the second ball bearing 109b. Therefore, the outer ring of the second ball bearing 109b is supported towards the outside of the transmission device. The outer ring of the second ball bearing 109b is located between the locating ring of the insertion groove 117 and the second shoulder 119 of the support structure 107 of the first transmission device 101.

[0046] Because the support structures 107 and 207 of the first transmission device 101 and the second transmission device 201 are identical, the support structure 207 of the second transmission device 201 also has a second shoulder 219. This similarly forms a support for the outer ring of the second tapered roller bearing 209b. Thus, the outer ring of the second tapered roller bearing 209b is supported towards the outside of the transmission device.

[0047] The input shafts 103 and 203 of the first transmission device 101 and the second transmission device 201 respectively form shoulders 120 and 220 as supports for the inner rings of the second ball bearing 109b or the second tapered roller bearing 209b. The second shoulder 120 of the input shaft 103 of the first transmission device 101 acts as a support for the inner ring of the second ball bearing 109b and supports the inner ring towards the outside of the transmission device. Similarly, the shoulder 220 of the input shaft 203 of the second transmission device 201 forms a support for the inner ring of the second tapered roller bearing 209b. The inner ring of the second tapered roller bearing 209b is supported in the opposite direction, that is, towards the inside of the transmission device, by the second shoulder 220.

[0048] With the aforementioned arrangement of the supports, the first ball bearing 109a and the second ball bearing 109b are configured in an X-type arrangement. The first tapered roller bearing 209a and the second tapered roller bearing 209b are configured in an O-type arrangement.

[0049] List of reference numerals

[0050] 101 First Transmission Device

[0051] 103 input axis

[0052] 105 housing

[0053] 107 Support Structure

[0054] 109a First Ball Bearing

[0055] 109b Second Ball Bearing

[0056] 111 cover

[0057] The first shoulder of the 113 support structure

[0058] The first shoulder of the 115 input shaft

[0059] 117 slots

[0060] The second shoulder of the 119 support structure

[0061] The second shoulder of the 120 input shaft

[0062] 201 Second Transmission Device

[0063] 203 input axis

[0064] 205 housing

[0065] 207 Support Structure

[0066] 209a First Tapered Roller Bearing

[0067] 209b Second Tapered Roller Bearing

[0068] 211 cover

[0069] 213 First shoulder of the support structure

[0070] 215 Adjusting Nut

[0071] 217 slots

[0072] 219 Second shoulder of the support structure

[0073] Shoulder of 220 input shaft

Claims

1. A series of transmission device structures having a first transmission device (101) and a second transmission device (201); wherein, The first transmission device (101) and the second transmission device (201) each have an input shaft (103, 203), a housing (105, 205), a support structure (107, 207) fixed within the housing, and at least two bearings. The input shaft (103, 203) is rotatably supported within the support structure (107, 207) by means of the at least two bearings. At least two bearings of the first transmission device (101) and at least two bearings of the second transmission device (201) have the same structural type; wherein, The structural type of at least the bearings in the first transmission device (101) differs from the structural type of at least the bearings in the second transmission device (201); and wherein, The supporting structures (107, 207) are identical in structure, wherein, The support structures (107, 207) are threaded to the openings of their respective housings (105, 205). The device is characterized by having an adjusting nut threadedly connected to the input shaft (203) of the second transmission device (201), the adjusting nut axially supporting the inner ring of the first bearing of the second transmission device (201).

2. The transmission device structure series according to claim 1; characterized in that, The input shafts (103, 203) have different structures.

3. The transmission device structure series according to claim 1 or 2; characterized in that, At least two bearings of the first transmission device (101) are oriented in an X-shape, and at least two bearings of the second transmission device (201) are oriented in an O-shape.

4. The transmission device structure series according to claim 1 or 2; characterized in that, The first transmission device (101) and the second transmission device (201) each have a cover (111, 211), which is fixed within a respective support structure (107, 207) through which their respective input shafts (103, 203) pass; wherein, The cover (111) of the first transmission device and the cover (211) of the second transmission device (201) have the same structure.

5. The transmission device structure series according to claim 4; characterized in that, The cover (111) of the first transmission device (101) axially supports the outer ring of the first bearing of the first transmission device (101).

6. The transmission device structure series according to claim 1 or 2; characterized in that, The support structure (207) of the second transmission device (201) forms a shoulder (213), which axially supports the outer ring of the first bearing of the second transmission device (201).

7. The transmission device structure series according to claim 1 or 2; characterized in that, The input shaft (103) of the first transmission device (101) forms a shoulder (115), which axially supports the inner ring of the first bearing of the first transmission device (101).

8. The transmission device structure series according to claim 1 or 2; characterized in that, The support structure (107) of the first transmission device (101) has a groove (117) into which a positioning ring is inserted; wherein, The positioning ring axially supports the outer ring of the second bearing of the first transmission device (101).

9. The transmission device structure series according to claim 1 or 2; characterized in that, The support structure of the second transmission device (201) forms a shoulder (119, 219), which axially supports the outer ring of the second bearing of the second transmission device (201).

10. The transmission device structure series according to claim 1 or 2; characterized in that, The input shaft (103) of the first transmission device (101) forms a shoulder (120), which axially supports the inner ring of the second bearing of the first transmission device (101).

11. The transmission device structure series according to claim 1 or 2; characterized in that, The input shaft (203) of the second transmission device (201) forms a shoulder (220), which axially supports the inner ring of the second bearing of the second transmission device.

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