CN212360396U - Fastening device with tolerance compensation function - Google Patents
Fastening device with tolerance compensation function Download PDFInfo
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- CN212360396U CN212360396U CN202021969038.7U CN202021969038U CN212360396U CN 212360396 U CN212360396 U CN 212360396U CN 202021969038 U CN202021969038 U CN 202021969038U CN 212360396 U CN212360396 U CN 212360396U
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- locking bolt
- compensation element
- tolerance
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Abstract
A fastening device with tolerance compensation function is used for firmly fastening a first member to a second member simply, conveniently and efficiently, and comprises a locking bolt, a containing groove arranged on the first member, a stop table arranged on the second member and a tolerance compensation element. The tolerance compensation element is arranged in the accommodating groove and can perform Y-direction rotation motion and Y-direction translation motion relative to the accommodating groove; the locking bolt is arranged in the tolerance compensation element and is in threaded connection with the threaded hole, and the locking bolt can perform Y-direction rotation movement, X-direction translation movement and Z-direction translation movement relative to the tolerance compensation element. The utility model discloses the automatic all kinds of tolerances that exist between the component of absorbing of in-process drive tolerance compensation element that tighten at the locking bolt, realize fastening and tolerance compensation function promptly after the locking.
Description
Technical Field
The utility model relates to a fastener with tolerance compensation function especially is applied to the production assembly field of car for first component location in the car is on the second component, and has the tolerance in each side to compensate first component and second component itself.
Background
Certain tolerances are necessary when two or more components are assembled together. Firstly, a certain dimensional tolerance exists during the production of a single component, namely, a certain error always exists in the actual size after the part is finished due to the influence of factors such as processing or measurement and the like in the manufacturing process of the part; second, when two or more members are fastened, a position tolerance is also inevitably generated. The existence of tolerance almost runs through the life cycle of the whole product, and influences the quality of the product, the processing route, the detection, the production and manufacturing cost, the assembly of the final product and the like.
US7891927B2 describes a positioning device with tolerance compensation for positioning a first automotive component relative to a second automotive component. The positioning device with tolerance compensation of US7891927B2 comprises a screw and an intermediate part with an internal thread cooperating with the screw. The intermediate part also has an (external) thread which is screwed into an insert which is fixed relative to the second vehicle part. Tightening of the screw and the intermediate member positions the first automotive component relative to the second automotive component. However, the parts of the positioning device with tolerance compensation of US7891927B2 have complex geometries, which make them difficult to be control units, and it is mandatory to manufacture them from plastic. Nevertheless, these plastic parts may creep and cannot withstand the considerable forces necessary to maintain a durable and low vibration fastening. Furthermore, the positioning device of US7891927B2 requires the operator to make position adjustments during assembly of the automotive components.
CN109154317A describes a fixing device for fixing a first member to a second member, having: a spacer element configured for positioning the first component at a distance from the second component along the first axis (Y) and for fixing the first component at a distance from the second component, the spacer element having a stop face for supporting the fixing device on the second component, the spacer element being configured in one piece; and a tolerance compensation element configured for movably accommodating the spacer element in the first direction (Y) and for compensating for tolerances between the first and second members along the second axis (X) and along the third axis (Z), the tolerance compensation element being configured in one piece. Compared with the fixing device of the US7891927B2, the fixing device is optimized and improved, but is still not simple and convenient enough, the fixing device still needs a locking screw, a spacing element with a special structure and a tolerance compensation element, the three are not available, in order to realize the installation and the matching of the three, a specific matching structure needs to be formed on a handle base and a vehicle door sheet metal, the whole structure is still complex, and the fixing device is not convenient to install.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a fastening device with tolerance compensation function, which has fewer parts and is more simple and convenient to operate.
The technical proposal of the utility model for solving the technical problem is that: a fastening device with tolerance compensation function for fastening a first member to a second member, said fastening device with tolerance compensation function comprising:
a lock bolt having a head portion for fitting a driving tool, a threaded portion for connecting components, and an abutting portion for limiting and located between the head portion and the threaded portion;
the accommodating groove is arranged on the first component;
the stop table is arranged on the second component, and a threaded hole matched with the threaded part on the locking bolt is formed in the stop table;
the tolerance compensation element is provided with a through hole for the locking bolt to pass in and out, and can be abutted against the stop table;
the tolerance compensation element is arranged in the accommodating groove and can perform Y-direction rotation motion and Y-direction translation motion relative to the accommodating groove;
the locking bolt is arranged in the tolerance compensation element and is in threaded connection with the threaded hole, and the locking bolt can perform Y-direction rotation movement, X-direction translation movement and Z-direction translation movement relative to the tolerance compensation element.
Preferably, the inner wall of the accommodating groove is convexly provided with a plurality of bosses, and the outer wall of the tolerance compensation element is provided with a plurality of spiral guide grooves matched with the bosses.
Preferably, the spiral guide groove has a straight section extending straight in the Y direction and a spiral section extending curved in the Y direction, the starting end of the straight section is an open end for the boss to enter and exit, the end of the straight section is a switching end, the starting end of the spiral section is the switching end, and the end of the spiral section is a closed end.
Preferably, the tolerance compensation element is cylindrical, the shape of the accommodating groove is matched with that of the tolerance compensation element, and the boss is arranged in the accommodating groove and close to the second component.
Preferably, one end of the tolerance compensation element, which is close to the second member, is provided with a limiting surface, and the abutting part of the locking bolt can abut against the limiting surface and drive the tolerance compensation element to rotate along the Y direction while the locking bolt rotates.
Preferably, the diameter of the through hole is larger than the diameter of the thread part of the locking bolt, and the locking bolt penetrates through the through hole and then is in threaded connection with the thread hole.
Preferably, the inner wall of the tolerance compensation element is further provided with a plurality of limiting elastic buckles, and the limiting elastic buckles and the locking bolts can be in contact connection and form limiting matching.
Preferably, the limiting elastic buckle is obliquely arranged from outside to inside along the Y direction, wherein the inner end of the limiting elastic buckle can be in contact connection with the head part of the locking bolt to form limiting fit, and the lower end of the limiting elastic buckle can be in contact connection with the abutting part of the locking bolt to form limiting fit.
Preferably, the threaded portion of the locking bolt has a guide surface.
The beneficial effects of the utility model reside in that:
1. the fastening device with the tolerance compensation function has a brand new structure, the fastening connection of the first component and the second component is realized, the tolerance compensation element can be driven to automatically absorb various original tolerances between the components in the tightening process of the locking bolt, and the fastening and tolerance compensation functions are realized after the locking bolt is locked.
2. The fastening method utilizing tolerance compensation is provided, the number of parts is small, the mutual connection relation is clear, the assembly is very convenient and fast, the positions of all components do not need to be manually adjusted after the locking bolt is screwed down, and the assembly time is effectively saved.
3. Tolerance compensating element and locking bolt are extrusion contact, and locking bolt is metal threaded connection with the backstop platform on the door panel beating, can effectively avoid intensity not enough, cause to fall to turn round the phenomenon emergence.
4. The utility model provides a fastener's practicality is strong, and part is small in quantity, and simple structure is reliable, low cost.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a schematic view of the first member and the second member before they are fastened together.
Fig. 3 is a schematic view of the first member and the second member in a pre-positioning state.
Fig. 4 is a schematic view of the first member and the second member after being positioned and fastened.
Fig. 5 is a cross-sectional view of the first member prior to fastening with the second member.
FIG. 6 is a cross-sectional view of the first member and the second member when pre-positioned.
Fig. 7 is an enlarged schematic view of a portion a in fig. 6.
Fig. 8 is a cross-sectional view of the first member after being positioned and secured with the second member.
Fig. 9 is an enlarged schematic view of a portion B in fig. 8.
FIG. 10 is a front view of a tolerance compensating element.
FIG. 11 is a top view of a tolerance compensating element.
FIG. 12 is a cross-sectional view of a tolerance compensating element.
Fig. 13 is a structural schematic view of the lock bolt.
Fig. 14 is a sectional view of the accommodation groove.
FIG. 15 is a cross-sectional view of the locking bolt, tolerance compensating element and receiving slot as assembled.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 15, a fastening device with a tolerance compensation function for fastening a first member 1 to a second member 2, the fastening device with the tolerance compensation function comprising: a lock bolt 3 having a head portion 7 for fitting a driving tool, a threaded portion 8 for connecting components, and an abutting portion 9 for limiting and located between the head portion 7 and the threaded portion 8; a receiving groove 5 provided on the first member 1; a stopper table 6 provided on the second member 2, the stopper table 6 having a threaded hole 10 formed therein for fitting with a threaded portion 8 of the lock bolt 3; a tolerance compensation element 4, which is provided with a through hole 11 for the locking bolt 3 to pass in and out, and the tolerance compensation element 4 can be abutted against the stop table 6;
the tolerance compensation element 4 is installed in the accommodating groove 5, and the tolerance compensation element 4 can perform Y-direction rotation motion and Y-direction translation motion relative to the accommodating groove 5; the locking bolt 3 is arranged in the tolerance compensation element 4 and is in threaded connection with the threaded hole 10, and the locking bolt 3 can perform Y-direction rotation movement, X-direction translation movement and Z-direction translation movement relative to the tolerance compensation element 4.
In order to realize that the tolerance compensation element 4 can perform Y-direction rotational movement and Y-direction translational movement relative to the accommodation groove 5, this embodiment provides a preferable scheme, specifically: the inner wall of the accommodating groove 5 is convexly provided with a plurality of bosses 12, and the outer wall of the tolerance compensation element 4 is provided with a plurality of spiral guide grooves 13 matched with the bosses 12. Further, the spiral guide groove 13 has a straight section 14 extending straight in the Y direction and a spiral section 15 extending curved in the Y direction, the starting end of the straight section 14 is an open end 16 for the boss 12 to go in and out, the end of the straight section 14 is a transition end 17, the starting end of the spiral section 15 is the transition end 17, and the end of the spiral section 15 is a closed end 18. Due to the arrangement of the straight section 14, the boss 12 enters from the open end 16 of the spiral guide groove 13, and the function of the tolerance compensation element 4 performing Y-direction translational motion relative to the accommodating groove 5 is realized; in addition, the spiral section 15 is arranged, and the movement mode of the boss 12 is changed from the node point of the conversion end 17, namely, after the boss 12 enters the spiral section 15, the function of the tolerance compensation element 4 performing the Y-direction rotation movement relative to the accommodating groove 5 is realized.
Preferably, the tolerance compensation element 4 is cylindrical, the shape of the accommodating groove 5 is matched with that of the tolerance compensation element 4, and the boss 12 is arranged in the accommodating groove 5 and close to the second member 2. This preferable mode enables the tolerance compensation element 4 to rotate more smoothly in the accommodation groove 5.
In order to realize the function of the locking bolt 3 driving the tolerance compensation element 4, the embodiment provides a preferable scheme that a limiting surface 19 is arranged at one end of the tolerance compensation element 4 close to the second component 2, and the abutting part 9 of the locking bolt 3 can abut against the limiting surface 19 and drive the tolerance compensation element 4 to rotate along the Y direction while the locking bolt 3 rotates. After the locking bolt 3 is screwed into a certain position, the abutting part 9 contacts the limiting surface 19 and generates enough friction force, so that relative movement between the locking bolt 3 and the tolerance compensation element 4 does not occur any more, and further, when the locking bolt 3 is screwed again, the tolerance compensation element 4 and the locking bolt 3 can move synchronously.
In order to realize the function that the locking bolt 3 can perform X-direction translational motion and Z-direction translational motion relative to the tolerance compensation element 4, the diameter of the through hole 11 is larger than the diameter of the thread part 8 of the locking bolt 3, and the locking bolt 3 passes through the through hole 11 and then is in threaded connection with the threaded hole 10, namely, clearance fit is formed, so that under the condition that the locking bolt 3 is not completely screwed, the locking bolt 3 can perform X-direction and Z-direction upward position change relative to the through hole 11, and further, in the process that the locking bolt 3 is screwed along the Y direction, the tolerance compensation function of the locking bolt 3 relative to the tolerance compensation element 4 in the X direction and the Z direction is realized.
In this embodiment, the inner wall of the tolerance compensation element 4 is further provided with a plurality of limiting elastic buckles 20, and the limiting elastic buckles 20 and the locking bolt 3 can be in contact connection and form limiting fit. Further preferably, the limiting elastic buckle 20 is arranged in an inclined manner from the outside to the inside along the Y direction, wherein the inner end of the limiting elastic buckle 20 is in contact connection with the head part 7 of the locking bolt 3 to form a limiting fit, and the lower end of the limiting elastic buckle 20 is in contact connection with the abutting part 9 of the locking bolt 3 to form a limiting fit. Through the arrangement of the limiting elastic buckle 20, firstly, when the locking bolt 3 is not screwed into the threaded hole 10 in the initial assembly stage and the locking bolt 3 is installed in the tolerance compensation element 4, the limiting function can be realized on the locking bolt 3, and the situation that the locking bolt 3 is lost in the operation process is prevented; secondly, a limit space 21 is formed between the limit elastic buckle 20 and the limit surface 19, the screw head part 7 and the abutting part 9 of the locking bolt 3 are positioned in the limit space 21, and gaps exist in the X direction, the Y direction and the Z direction, so that an effective adjusting space is provided in the process of screwing the locking bolt 3, and the automatic tolerance compensation function in all directions is realized.
Preferably, the threaded portion 8 of the locking bolt 3 has a guide surface 22. Due to poor sight in the assembling process, the threaded portion 8 can enter the threaded hole 10 more easily through the arrangement of the guide surface 22, so that the locking bolt 3 can be conveniently screwed in, and meanwhile, the threaded hole 10 or the locking bolt 3 can be prevented from being roughened due to poor alignment.
The utility model also provides a fastening method of utilizing the fastening device with tolerance compensation function, when the fastening method is applied to the handle device in the automobile, the handle device comprises a first component 1, a second component 2 and the fastening device with tolerance compensation function, wherein, the first component 1 is a handle base, and the second component 2 is a vehicle door metal plate; the mounting method comprises the following steps:
step one, placing a vehicle door sheet metal and a handle base into a working space, and preparing a matched number of locking bolts 3 and tolerance compensation elements 4. Preferably, 3 sets of locking bolts 3 and tolerance compensation elements 4 are adopted in one set of handle device to form a triangular distribution form, so that the stability after fixation is better;
and step two, installing the tolerance compensation element 4 into the accommodating groove 5 in the handle base. During installation, the boss 12 is aligned with the open end 16 of the spiral guide groove 13, and then the installation is carried out in a translation mode along the Y direction, so that the boss 12 moves to the conversion end 17 of the spiral guide groove 13;
and step three, installing the locking bolt 3 into the tolerance compensation element 4. During the operation, the locking bolt 3 is put into the tolerance compensation element 4 from one end far away from the limiting surface 19, the locking nut is extruded along the Y direction to pass through the limiting elastic buckle 20, the threaded part 8 of the rear locking bolt 3 passes through the through hole 11, the inner end of the limiting elastic buckle 20 can be in contact connection with the screw head part 7 of the locking bolt 3 to form limiting fit, and the lower end of the limiting elastic buckle 20 can be in contact connection with the abutting part 9 of the locking bolt 3 to form limiting fit;
matching the position of the tolerance compensation element 4 on the handle base with the position of the stop table 6 on the vehicle door sheet metal, enabling the handle base to be close to the vehicle door sheet metal after matching is completed, and operating a positioning tool (a positioning tool fixture, an operating tool and the like) to limit so as to realize pre-positioning, wherein a Y-direction deviation gap 23 exists between the stop table 6 and the tolerance compensation element 4, and an X-direction deviation gap and a Z-direction deviation gap exist between a threaded hole 10 on the stop table 6 and a through hole 11 on the tolerance compensation element 4;
and fifthly, screwing the locking bolt 3 into the threaded hole 10, driving the tolerance compensation element 4 to move towards the stop table 6 while screwing the locking bolt 3 until the tolerance compensation element 4 abuts against and is locked with the stop table 6, so as to fasten the handle base and the vehicle door sheet metal together, and realizing tolerance compensation in the X direction, the Y direction and the Z direction.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to utility model technical entity to any simple modification, change and the equivalent structure change of doing above embodiment, all still belong to the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. A fastening device with tolerance compensation function for fastening a first member to a second member, characterized in that the fastening device with tolerance compensation function comprises:
a lock bolt having a head portion for fitting a driving tool, a threaded portion for connecting components, and an abutting portion for limiting and located between the head portion and the threaded portion;
the accommodating groove is arranged on the first component;
the stop table is arranged on the second component, and a threaded hole matched with the threaded part on the locking bolt is formed in the stop table;
the tolerance compensation element is provided with a through hole for the locking bolt to pass in and out, and can be abutted against the stop table;
the tolerance compensation element is arranged in the accommodating groove and can perform Y-direction rotation motion and Y-direction translation motion relative to the accommodating groove;
the locking bolt is arranged in the tolerance compensation element and is in threaded connection with the threaded hole, and the locking bolt can perform Y-direction rotation movement, X-direction translation movement and Z-direction translation movement relative to the tolerance compensation element.
2. The fastening device with the tolerance compensating function according to claim 1, wherein: the inner wall of the accommodating groove is convexly provided with a plurality of bosses, and the outer wall of the tolerance compensation element is provided with a plurality of spiral guide grooves matched with the bosses.
3. The fastening device with the tolerance compensating function according to claim 2, wherein: spiral guide way have along Y to straight section of extending and along the spiral section of Y to crooked extension, the initiating terminal of straight section is for supplying the open end of boss business turn over, the end of straight section is the conversion end, the initiating terminal of spiral section does the conversion end, the end of spiral section is the blind end.
4. The fastening device with the tolerance compensating function according to claim 3, wherein: the tolerance compensation element is cylindrical, the shape of the accommodating groove is matched with that of the tolerance compensation element, and the boss is arranged in the accommodating groove and close to the second component.
5. The fastening device with the tolerance compensating function according to claim 1, wherein: the tolerance compensation element is close to one end of the second component and is provided with a limiting surface, and the abutting part of the locking bolt can abut against the limiting surface and drive the tolerance compensation element to rotate along the Y direction while the locking bolt rotates.
6. The fastening device with the tolerance compensating function according to claim 1, wherein: the diameter of the through hole is larger than the diameter of the thread part of the locking bolt, and the locking bolt penetrates through the through hole and then is in threaded connection with the threaded hole.
7. The fastening device with the tolerance compensating function according to claim 1, wherein: the inner wall of the tolerance compensation element is also provided with a plurality of limiting elastic buckles, and the limiting elastic buckles and the locking bolts can be in contact connection and form limiting matching.
8. The fastening device with the tolerance compensating function according to claim 1, wherein: the limiting elastic buckle is obliquely arranged from outside to inside along the Y direction, wherein the inner end of the limiting elastic buckle can be in contact connection with the head part of the locking bolt to form limiting fit, and the lower end of the limiting elastic buckle can be in contact connection with the abutting part of the locking bolt to form limiting fit.
9. The fastening device with the tolerance compensating function according to claim 1, wherein: the threaded portion of the locking bolt has a guide surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021969038.7U CN212360396U (en) | 2020-09-10 | 2020-09-10 | Fastening device with tolerance compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021969038.7U CN212360396U (en) | 2020-09-10 | 2020-09-10 | Fastening device with tolerance compensation function |
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| Publication Number | Publication Date |
|---|---|
| CN212360396U true CN212360396U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021969038.7U Active CN212360396U (en) | 2020-09-10 | 2020-09-10 | Fastening device with tolerance compensation function |
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| CN (1) | CN212360396U (en) |
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- 2020-09-10 CN CN202021969038.7U patent/CN212360396U/en active Active
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