CN212386579U - Automatic clearance compensation mechanism for steering gear and steering gear with automatic clearance compensation mechanism - Google Patents
Automatic clearance compensation mechanism for steering gear and steering gear with automatic clearance compensation mechanism Download PDFInfo
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- CN212386579U CN212386579U CN202021141891.XU CN202021141891U CN212386579U CN 212386579 U CN212386579 U CN 212386579U CN 202021141891 U CN202021141891 U CN 202021141891U CN 212386579 U CN212386579 U CN 212386579U
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- worm
- steering gear
- compensation mechanism
- clearance compensation
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Abstract
The utility model discloses a steering gear that is used for clearance automatic compensation mechanism of steering gear and has it, clearance automatic compensation mechanism includes: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed in the shell; the worm is rotatably arranged in the accommodating cavity; one end of the elastic piece is fixedly connected with the shell, and the other end of the elastic piece is rotatably connected with the worm. According to the utility model discloses a clearance automatic compensation mechanism for steering gear links to each other with casing and worm respectively through the both ends with the elastic component for the elasticity of elastic component can act on the worm all the time, thereby realizes the automatic compensation in the wearing and tearing clearance between worm wheel and the worm, makes worm and worm wheel mesh well all the time.
Description
Technical Field
The utility model belongs to the technical field of vehicle steering ware technique and specifically relates to a steering gear that is used for clearance automatic compensation mechanism of steering gear and has it.
Background
In the related art, the power assisting unit is an important part of an electric power steering system and comprises a controller, a sensor unit, a motor, a worm gear, a clearance compensation mechanism and the like. If the structure of the worm gear and worm transmission pair is an unadjustable structure, the processing requirements on the shell, the worm gear and the worm are high. However, due to limited manufacturing capability and equipment guaranteeing capability, the power assisting unit sub-assembly inevitably causes meshing gaps in the working process due to insufficient machining precision or abrasion in the long-term meshing process, the gaps can cause vibration or abnormal sound of a steering system, and the steering assisting performance of an automobile is directly affected, so that the gap compensation mechanism is very necessary for the steering system.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a clearance automatic compensation mechanism for steering gear, clearance automatic compensation mechanism can the long-time wearing and tearing clearance that produces of automatic compensation worm wheel and worm, avoids the steering gear to produce the abnormal sound.
The utility model also provides a steering gear with above-mentioned clearance automatic compensation mechanism.
According to the utility model discloses a clearance automatic compensation mechanism for steering gear of first aspect, a serial communication port, include: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed in the shell; the worm is rotatably arranged in the accommodating cavity; one end of the elastic piece is fixedly connected with the shell, and the other end of the elastic piece is rotatably connected with the worm.
According to the utility model discloses a clearance automatic compensation mechanism for steering gear links to each other with casing and worm respectively through the both ends with the elastic component for the elasticity of elastic component can act on the worm all the time, thereby realizes the automatic compensation in the wearing and tearing clearance between worm wheel and the worm, makes worm and worm wheel mesh well all the time.
According to some embodiments of the utility model, hold the chamber and follow the axial extension of worm, be formed with the mounting hole on the perisporium of the axial one end tip in chamber, clearance automatic compensation mechanism still includes: the adjusting bush is arranged in the mounting hole, and one end of the worm is supported on the inner side of the adjusting bush through a supporting bearing of the worm.
Further, a positioning groove recessed radially outward is formed on a peripheral wall of the mounting hole, and a positioning protrusion protruding radially outward is formed on an outer peripheral wall of the adjustment bush, the positioning protrusion being fitted in the positioning groove.
According to some embodiments of the utility model, the elastic component is elastic belt, elastic belt includes first end and the second end at tensile direction, be formed with spacing fixed part in the casing, first pot head is established on the worm, the second pot head is established on the spacing fixed part, elastic belt tensioning is in spacing fixed part with between the worm.
Further, the limiting fixing part is formed on the periphery of the mounting hole and protrudes towards the accommodating cavity along the axial direction of the mounting hole.
Furthermore, the limiting fixing part extends along the circumferential direction of the mounting hole, and the length of the limiting fixing part in the circumferential direction of the mounting hole is larger than the outer diameter of the worm.
According to some embodiments of the present invention, the gap automatic compensation mechanism further comprises: the sliding gasket is arranged on the worm and between the elastic belts.
Further, the sliding pad is formed in a C-shape.
According to some embodiments of the present invention, the outer peripheral wall of the adjustment bush is formed with a mounting groove extending in the circumferential direction, and the clearance automatic compensation mechanism further includes: the buffer gasket is sleeved in the mounting groove.
According to the utility model discloses a steering gear of second aspect, include according to the utility model discloses a clearance automatic compensation mechanism for steering gear of first aspect.
According to the utility model discloses the steering gear of second aspect, through setting up the clearance automatic compensation mechanism for steering gear of above-mentioned first aspect, can automatic compensation owing to the clearance that the long-time wearing and tearing of the worm gear of steering gear produced, further avoid producing the abnormal sound.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a sectional view of an automatic clearance compensation mechanism for a steering gear according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the encircled portion shown in FIG. 1;
FIG. 3 is a schematic view of another angle of the automatic backlash compensation mechanism shown in FIG. 1;
FIG. 4 is a schematic view of yet another angle of the automatic clearance compensation mechanism shown in FIG. 1;
FIG. 5 is a partial schematic view of the automatic clearance compensation mechanism shown in FIG. 2;
FIG. 6 is a schematic view of an elastic belt of the automatic gap compensating mechanism shown in FIG. 1;
FIG. 7 is a schematic view of an adjustment bushing of the automatic clearance compensation mechanism shown in FIG. 1;
FIG. 8 is a schematic view of a sliding shim of the automatic clearance compensation mechanism shown in FIG. 1;
fig. 9 is a schematic view of a cushion washer of the automatic backlash compensation mechanism shown in fig. 1.
Reference numerals:
gap automatic compensation mechanism 100:
a shell 1, an accommodating cavity 11, a mounting hole 12, a positioning groove 121, a limit fixing part 122, a worm 2,
the elastic belt 3, the first end 31, the second end 32,
the adjusting device comprises an adjusting bush 4, a positioning bulge 41, a mounting groove 42, a sliding gasket 5, a supporting bearing 6, a worm wheel 7 and a buffer gasket 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
A backlash automatic compensating mechanism 100 for a steering gear according to an embodiment of a first aspect of the present invention is described below with reference to fig. 1 to 9.
According to the present invention, the automatic clearance compensation mechanism 100 for a steering gear includes: a housing 1, a worm 2 and an elastic member (e.g. an elastic belt 3 described below).
Specifically, referring to fig. 1, a containing cavity 11 is formed in a housing 1, a worm 2 is rotatably disposed in the containing cavity 11, one end of an elastic member is fixedly connected with the housing 1, and the other end of the elastic member is rotatably connected with the worm 2, so that when the worm 2 is worn and generates a gap due to long-time transmission matching with a worm wheel, the elastic force of the elastic member can act on the worm 2 to keep the worm 2 properly meshed with the worm wheel all the time, it can be understood that the direction of the acting force of the elastic member on the worm 2 is always from the worm 2 to the worm wheel, and in addition, by rotatably connecting one end of the elastic member with the worm 2, the elastic member is prevented from being wound on the surface of the worm 2 to cause the failure of the elastic member and the damage to a steering gear in the high-.
According to the utility model discloses a clearance automatic compensation mechanism 100 for steering gear through linking to each other with casing 1 and worm 2 respectively with the both ends of elastic component for the elasticity of elastic component can act on worm 2 all the time, thereby realizes the automatic compensation in the wearing and tearing clearance between worm wheel and the worm 2, makes worm 2 and worm wheel mesh well all the time.
According to some embodiments of the present invention, referring to fig. 1 to 5, the accommodating cavity 11 extends along the axial direction of the worm 2, the inner peripheral wall of the end portion of one axial end (for example, the right end of the accommodating cavity 11 shown in fig. 1) of the accommodating cavity 11 is formed with a mounting hole 12, and the automatic clearance compensation mechanism 100 may further include: the bushing 4 is adjusted. Specifically, the adjusting bush 4 is disposed in the mounting hole 12, one end of the worm 2 is supported on the inner side of the adjusting bush 4 through a supporting bearing of the worm 2, that is, one end of the worm 2 is sleeved with the supporting bearing, the outer side of the supporting bearing is sleeved with the adjusting bush 4, and the adjusting bush 4 is lined between the supporting bearing and the housing 1, so that the adjusting bush 4 can buffer the vibration of the worm 2 caused by the radial force, and the abnormal sound caused by frequent impact between the supporting bearing and the housing 1 is avoided.
Further, referring to fig. 4, a positioning groove 121 is formed on the peripheral wall of the mounting hole 12, the positioning groove 121 may be formed by radially outwardly recessing the peripheral wall of the mounting hole 12, a positioning protrusion 41 is formed on the peripheral wall of the adjustment bush 4, the positioning protrusion 41 may be formed by radially outwardly protruding the peripheral wall of the adjustment bush 4, and the positioning protrusion 41 is fitted into the positioning groove 121 to thereby restrain the adjustment bush 4 in the circumferential direction of the mounting hole 12.
According to some embodiments of the utility model, refer to fig. 5 and fig. 6, the elastic component is elastic belt 3, elastic belt 3 includes first end 31 and second end 32 at tensile direction, be formed with spacing fixed part 122 in the casing 1, first end 31 cover is established on worm 2, second end 32 covers is established on spacing fixed part 122, elastic belt 3 tensioning is between spacing fixed part 122 and worm 2, thus, elastic force of elastic belt 3 can act on worm 2 all the time, thereby make worm 2 and worm wheel keep good meshing, in addition, because elastic belt 3's shape easily receives the exogenic action and changes, therefore have higher plasticity, can realize the multi-directional compensation to worm 2 with the cooperation of casing 1.
Further, referring to fig. 2, the limiting fixing portion 122 may be formed on the periphery of the mounting hole 12, and the limiting fixing portion 122 protrudes toward the accommodating cavity 11 along the axial direction of the mounting hole 12, so that the second end 32 of the elastic belt 3 can be conveniently sleeved on the limiting fixing portion 122, and the protruding length of the limiting fixing portion 122 along the axial direction should be long enough to prevent the second end 32 of the elastic belt 3 from falling off.
Further, referring to fig. 3 and 4, the limit fixing portion 122 extends along the circumferential direction of the mounting hole 12, and the length of the limit fixing portion 122 in the circumferential direction of the mounting hole 12 is greater than the outer diameter of the worm 2, for example, as shown in fig. 2, the inner side wall of the limit fixing portion 122 in the radial direction extends along the circumferential direction of the mounting hole 12, the outer side wall of the limit fixing portion 122 in the radial direction may be formed as a plane, and the end surface of the elastic belt 3 in the axial direction is formed as a triangular ring shape because the length of the limit fixing portion 122 in the circumferential direction of the mounting hole 12 is greater than the outer diameter of the worm 2, so that the contact area between the second end 32 of the elastic belt 3 and the limit fixing portion 122 is increased, and the connection.
According to some embodiments of the present invention, referring to fig. 5 and 8, the automatic clearance compensation mechanism 100 may further include: sliding gasket 5, sliding gasket 5 locate on worm 2 and between elastic belt 3, sliding gasket 5 can play the effect that supports elastic belt 3, and elastic belt 3's tensile force also can transmit worm 2 through sliding gasket 5 on, can avoid in addition because worm 2 and elastic belt 3 direct contact and the sliding friction who brings to avoid long-time working process, elastic belt 3 can produce a large amount of heat and influence life.
Further, referring to fig. 8, the sliding washer 5 is formed in a C-shape, which may facilitate the assembly of the sliding washer 5 to the worm 2.
According to some embodiments of the present invention, referring to fig. 4 and 9, the outer circumferential wall of the adjustment bush 4 is formed with a mounting groove 42, the mounting groove 42 extends along the circumferential direction of the outer circumferential wall of the adjustment bush 4, and the automatic clearance compensation mechanism 100 may further include: buffer washer, in mounting groove 42 is located to the blotter snare, and buffer washer can with casing 1 butt in radial direction, be favorable to further buffering worm 2 vibration like this, avoid the abnormal sound that the vibration brought.
A steering gear according to a second aspect of the present invention is described below.
According to the present invention, the steering gear of the second aspect includes the automatic clearance compensation mechanism 100 for a steering gear according to the first aspect of the present invention.
According to the utility model discloses the steering gear of second aspect, through setting up the clearance automatic compensation mechanism 100 for steering gear of above-mentioned first aspect, can automatic compensation owing to the clearance that the long-time wearing and tearing of worm gear 2 of steering gear produced, further avoid producing the abnormal sound.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An automatic clearance compensation mechanism for a steering gear, comprising:
the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed in the shell;
the worm is rotatably arranged in the accommodating cavity;
one end of the elastic piece is fixedly connected with the shell, and the other end of the elastic piece is rotatably connected with the worm.
2. The automatic clearance compensation mechanism for a steering gear according to claim 1, wherein the housing chamber extends in an axial direction of the worm, a mounting hole is formed in a peripheral wall of one end portion in the axial direction of the housing chamber, and the automatic clearance compensation mechanism further comprises:
the adjusting bush is arranged in the mounting hole, and one end of the worm is supported on the inner side of the adjusting bush through a supporting bearing of the worm.
3. The automatic clearance compensation mechanism for a steering gear according to claim 2, wherein a positioning groove recessed radially outward is formed on a peripheral wall of the mounting hole, and a positioning projection projecting radially outward is formed on an outer peripheral wall of the adjustment bush, the positioning projection being fitted in the positioning groove.
4. The automatic clearance compensation mechanism for a steering gear according to claim 2, wherein the elastic member is an elastic belt, the elastic belt includes a first end and a second end in a stretching direction, a limit fixing portion is formed in the housing, the first end is sleeved on the worm, the second end is sleeved on the limit fixing portion, and the elastic belt is tensioned between the limit fixing portion and the worm.
5. The automatic clearance compensation mechanism for a steering gear according to claim 4, wherein the stopper fixing portion is formed at a periphery of the mounting hole and protrudes toward the accommodation chamber in an axial direction of the mounting hole.
6. The automatic clearance compensation mechanism for a steering gear according to claim 5, wherein the limit stopper extends in a circumferential direction of the mounting hole, and a length of the limit stopper in the circumferential direction of the mounting hole is larger than an outer diameter dimension of the worm.
7. The automatic backlash compensation mechanism for a steering gear according to claim 4, further comprising: the sliding gasket is arranged on the worm and between the elastic belts.
8. The automatic clearance compensation mechanism for a steering gear according to claim 7, wherein the sliding washer is formed in a C-shape.
9. The automatic clearance compensation mechanism for a steering gear according to any one of claims 2 to 8, wherein an outer peripheral wall of the adjustment bush is formed with a circumferentially extending mounting groove,
the clearance automatic compensation mechanism further comprises: the buffer gasket is sleeved in the mounting groove.
10. A steering gear, characterized by comprising the backlash automatic compensating mechanism for a steering gear according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021141891.XU CN212386579U (en) | 2020-06-18 | 2020-06-18 | Automatic clearance compensation mechanism for steering gear and steering gear with automatic clearance compensation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021141891.XU CN212386579U (en) | 2020-06-18 | 2020-06-18 | Automatic clearance compensation mechanism for steering gear and steering gear with automatic clearance compensation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212386579U true CN212386579U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021141891.XU Active CN212386579U (en) | 2020-06-18 | 2020-06-18 | Automatic clearance compensation mechanism for steering gear and steering gear with automatic clearance compensation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212386579U (en) |
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2020
- 2020-06-18 CN CN202021141891.XU patent/CN212386579U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210914 Address after: 071000 in yard 75, Dongsheng Road, Jiaozhuang Township, Lianchi District, Baoding City, Hebei Province Patentee after: Baoding Branch of honeycomb intelligent steering system (Jiangsu) Co.,Ltd. Address before: 071000 No.75 Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee before: Honeycomb intelligent turn technology Hebei Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230104 Address after: 868 Gangxing Road, Yangzhong Economic Development Zone, Zhenjiang City, Jiangsu Province Patentee after: Beehive intelligent steering system (Jiangsu) Co.,Ltd. Address before: 071000 in yard 75, Dongsheng Road, Jiaozhuang Township, Lianchi District, Baoding City, Hebei Province Patentee before: Baoding Branch of honeycomb intelligent steering system (Jiangsu) Co.,Ltd. |