CN102815258A

CN102815258A - Adjustable nut

Info

Publication number: CN102815258A
Application number: CN2012102890155A
Authority: CN
Inventors: 李晓伟; 葛峰; 曹尚贵
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2012-12-12
Anticipated expiration: 2032-08-14
Also published as: CN102815258B

Abstract

The invention discloses an adjustable nut, belonging to the field of vehicle accessories. The adjustable nut comprises an outer sleeve and an inner sleeve which are connected in an embedded way through threads. The internal part of the inner sleeve is used for installing a self-tapping screw. At least two clamping mechanisms are arranged on the outer wall of the outer sleeve. The adjustable nut is fixed through the clamping mechanisms. Each clamping mechanism comprises a columnar fixed clamping buckle and a clamping groove, wherein the columnar fixed clamping buckle is in parallel with the central axis of the outer sleeve and the clamping groove is formed between the end part of the fixed clamping buckle and the end part of the outer sleeve. At least one clamping surface of the clamping groove is a step surface. The step surface comprises at least two steps. The adjustable nut has the advantages that the adjustable nut can adapt to various car body metal plates with multiple commonly used thicknesses through the clamping mechanisms, and the application scope is wide; further, by using a spanner or a screw driver to rotate the self-tapping screw, the screw drives the adjustable nut to rotate, the adjustable nut is automatically adjusted and the goals of making up welding or assembling clearance errors and improving the appearance matching degree are achieved; and the adjustable nut has a simple and reliable structure, is easy to disassemble and is firmly assembled.

Description

Setting nut

Technical field

The present invention relates to the vehicle body fittings field, particularly a kind of car headlamp is used setting nut.

Background technology

It is fastening that the present employed fastening means major part of car headlamp is to use common project-welding nut to carry out, and promptly adopts a plurality of project-welding nuts that the head lamp multiple spot is fixed on the plates of automobile, through the fixing rock-steady structure of realizing head lamp of multiple spot.

In realizing process of the present invention, the contriver finds that there is following problem at least in prior art:

Because of each attachment point on the panel beating not simultaneously on same horizontal surface; When using project-welding nut fixedly; Earlier fixing project-welding nut can fit tightly with the panel beating periphery, the fixing project-welding nut in back just might with the peripheral poor fit of panel beating, and unadjustable; Influence is poor with peripheral part (like engine case, fender guard, preceding guarantor etc.) clearance plane, and the outward appearance visual effect is brought harmful effect.In a word, when actual head lamp assembling and outward appearance coupling, usually owing to welding or the bad bad phenomenon of outward appearance coupling that causes of assembly precision.

Summary of the invention

In order to solve prior art problems, the embodiment of the invention provides a kind of setting nut.Said technical scheme is following:

Said setting nut comprises: through nested continuous outer sleeve of screw thread and inner sleeve, be used to install thread-forming screw in the said inner sleeve, the outer wall of said outer sleeve is provided with at least two group clamping mechanisms, through said clamping mechanism with fixing said setting nut; Every group of clamping mechanism comprises: the column that parallels with said outer sleeve central axis is buckle fixedly; And formed draw-in groove between said fixed card end of thread portion and the said outer sleeve end; At least one snap-latch surface of said draw-in groove is a step surface, and said step surface comprises at least two step sections.

The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is:

Through the clamping mechanism with step section draw-in groove is set on its external sleeve drum outer wall, make setting nut can be suitable for the vehicle body panel beating of multiple usual thickness, Applicable scope is extensive; Further; Inner sleeve that setting is threaded and outer sleeve structure; Thread-forming screw is installed in inner sleeve, can be through using spanner or screwdriver rotation thread-forming screw, screw drives the adjustable nut rotation; Adjustable nut automatically regulating X to or Y to or Z to, to reach the purpose that remedies welding or assembly clearance error, improves outward appearance coupling; Setting nut is simple in structure, reliable, easy to assemble, installation is firm.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the front view of the setting nut that provides of the embodiment of the invention;

Fig. 2 is the disassembled state scheme drawing of the setting nut that provides of the embodiment of the invention;

Fig. 3 is the A-A section-drawing among Fig. 2;

Fig. 4 is that the setting nut that the embodiment of the invention provides is just adorned view.

Among the figure: 1: outer sleeve; 2: inner sleeve; 3: fixing buckle; 4: draw-in groove; 5: outside thread; 6: outer lug; 7: negative thread; 8: internal projection.

The specific embodiment

For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.

Fig. 1 shows the front view of the setting nut of the embodiment of the invention, and Fig. 2 is the disassembled state scheme drawing of present embodiment setting nut, and Fig. 3 is the A-A section-drawing of Fig. 2.Referring to figs. 1 through Fig. 3; This setting nut comprises through nested continuous outer sleeve 1 of screw thread and inner sleeve 2; Outer sleeve 1 forms the detouchable nut with inner sleeve 2, and thread-forming screw is installed in said inner sleeve 2, thereby realizes the fixing of associated mechanical components through setting nut and thread-forming screw.The outer wall of said outer sleeve 1 is provided with three groups of clamping mechanisms, through said clamping mechanism with fixing said setting nut; Every group of clamping mechanism comprises: the column that parallels with said outer sleeve 1 central axis is buckle 3 fixedly; And formed draw-in groove 4 between said fixedly buckle 3 ends and said outer sleeve 1 end; The following snap-latch surface of said draw-in groove 4 is a step surface, and said step surface comprises three step sections.

Wherein, in the present embodiment setting nut in use, with its earlier end orientation of contact thread-forming screw be defined as " on ", relative other end orientation is defined as D score, description hereinafter is equally applicable to this definition.

Set clamping mechanism is not limited to three groups on said outer sleeve 1 outer wall, as long as satisfy at least two groups.And in order to make the fixing back of setting nut stressed evenly, clamping mechanism is spacedly distributed on the outer wall of sleeve 1 outside.Why clamping mechanism selects three groups in the present embodiment, is in order both to guarantee setting nut fixation stability property, to simplify the structure of setting nut again.The step surface of draw-in groove 4 is not limited to and necessarily is arranged on down on the snap-latch surface, also can be arranged on the snap-latch surface, and up and down corresponding step surface of ladder position is set on the perhaps upper and lower snap-latch surface simultaneously, to satisfy in the stamping holes that draw-in groove 4 can be fastened on different-thickness.Step section on the step surface also is not limited to above-mentioned three; Its concrete number is according to the environment for use needs of setting nut, correspondingly one-tenth-value thickness 1/10 commonly used is set gets final product, for example; In the car headlamp fixed network; According to the panel beating thickness in the common vehicle part, can the one-tenth-value thickness 1/10 of three step sections be set to 0.8mm, 1.0mm, 1.2mm respectively, just can satisfy the fixing needs of car headlamp.

In the present embodiment; At said outer sleeve 1 open end; Be that its upper end is provided with along the outer (not indicating among the figure) that its opening is radially outward expanded, the lower surface of said outer forms one of them snap-latch surface of said draw-in groove 4, exactly; Be the following snap-latch surface of draw-in groove 4, the last snap-latch surface of draw-in groove 4 is formed by the fixing upper surface of buckle 3.

The open end of said inner sleeve 2; Be that its upper end also is provided with along the outer (not indicating among the figure) that its opening is radially outward expanded; After the setting nut assembling is accomplished; The outer of said outer sleeve 1 upper end and the outer of said inner sleeve 2 upper ends are in contact with one another, and can play certain position-limiting action to thread-forming screw.The outer wall of said inner sleeve 2 is provided with outside thread 5, and the inwall of said outer sleeve 1 is provided with negative thread 7, and said outside thread 5 is meshed with negative thread 7, realizes removably connecting between outer sleeve 1 and the inner sleeve 2 thus.

Further; Said inner sleeve 2 set inside have the tubular outer lug 6 coaxial with it; Said outer sleeve 1 set inside has the tubular internal projection 8 coaxial with it, and said outer lug 6 one ends are fixed on the upper end of said inner sleeve 2, and an end of said internal projection 8 is fixed on the lower end of said outer sleeve 1; Said inner sleeve 2 is between said outer sleeve 1 and internal projection 8, and the other end of said internal projection 8 is fastened between said inner sleeve 2 and the outer lug 6.The length of said outer lug 6 is less than the length of said inner sleeve 2, and the length of said internal projection 8 is less than the length of said outer sleeve 1.

The setting nut that this structure is provided with; When assembling according to first dress state shown in Figure 4; Outside thread 5 on the inner sleeve 2 is meshed with negative thread 7 on the outer sleeve 1, and internal projection 8 clamping mutually on the outer lug 6 on the inner sleeve 2 and the outer sleeve 1 realizes the assembling of setting nut.The processing technology of inner sleeve 2 and outer sleeve 1 adopts direct injection mo(u)lding, generally selects PBT (polybutylene terephthalate, Poly Butylene Terephthalate) material for use.

The present embodiment setting nut at first, sticks into outer sleeve 1 in the stamping holes when being used for the car headlamp assembling, three grades of step draw-in grooves 4 and panel beating clamping on outer sleeve 1 outer wall, thus outer sleeve 1 is connected on the panel beating, form connecting element; Next, inner sleeve 2 and outer sleeve 1 are assembled together; Then, head lamp is installed, is used thread-forming screw and setting nut that the head lamp multiple spot is fixed.

In order to improve head lamp fixation stability property; One end of the said draw-in groove 4 of present embodiment is set to the opening shape; The other end is provided with the block plate and forms closed; The opening of said draw-in groove 4 guarantees that towards consistent with the tightening direction of said thread-forming screw thread-forming screw outer sleeve 1 in rundown process can not come off from stamping holes, can further strengthen fixing on the contrary.The hand of spiral of said outside thread 5 is opposite with the hand of spiral of said thread-forming screw, can realize in the thread-forming screw rundown process, and the automatically regulating coupling remedies the gap that is occurred in the head lamp fixation procedure between inner sleeve 2 and the outer sleeve 1.

In thread-forming screw and the setting nut fixation procedure; Use spanner or screwdriver clickwise thread-forming screw, thread-forming screw is in the screw-in state, the thread-forming screw screw thread at first with inner sleeve 2 on outer lug 6 contact; Thread-forming screw drives inner sleeve 2; Because the screw thread of inner sleeve 2 is a minus thread, and is opposite with the thread-forming screw hand of spiral, so 2 of inner sleeves are in the back-out state.When inner sleeve 2 screws out, will be propped up after running into the head lamp installation foot, continue to use spanner or screwdriver clickwise thread-forming screw, thread-forming screw contacts with internal projection 8 on the outer sleeve 1, finally thread-forming screw screwed, fastening.In order to improve the thread-forming screw strength of fixation, the direction towards the lower end along said inner sleeve 2 upper ends preferably is set, the internal diameter of said internal projection 8 diminishes gradually, and is fixing more firm in rundown process to realize thread-forming screw.Thread-forming screw screwed, when fastening, inner sleeve 2 is in the optimum position, remedied vehicle body X to or Y to or Z to deviation, reach good matching effect.Find in the actual application that it is 10mm that inner sleeve 2 can maximum remedies tolerance, promptly maximum can remedy X or Y or Z direction 10mm deviation.

The invention described above embodiment sequence number is not represented the quality of embodiment just to description.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. setting nut; It is characterized in that; Comprise: through nested continuous outer sleeve of screw thread (1) and inner sleeve (2); Said inner sleeve is used to install thread-forming screw in (2), and the outer wall of said outer sleeve (1) is provided with at least two group clamping mechanisms, through said clamping mechanism with fixing said setting nut; Every group of clamping mechanism comprises: the column that parallels with said outer sleeve (1) central axis is buckle (3) fixedly; And formed draw-in groove (4) between said fixedly buckle (3) end and said outer sleeve (1) end; At least one snap-latch surface of said draw-in groove (4) is a step surface, and said step surface comprises at least two step sections.

2. setting nut according to claim 1 is characterized in that, said outer sleeve (1) open end is provided with the outer of radially outward expanding along its opening, and the lower surface of said outer forms one of them snap-latch surface of said draw-in groove (4).

3. setting nut according to claim 1 is characterized in that said clamping mechanism has three groups, is spacedly distributed on the outer wall of said outer sleeve (1).

4. setting nut according to claim 1; It is characterized in that; The open end of said inner sleeve (2) is provided with the outer of radially outward expanding along its opening; The outer wall of said inner sleeve (2) is provided with outside thread (5), and the inwall of said outer sleeve (1) is provided with negative thread (7), and said outside thread (5) and negative thread (7) are meshed.

5. setting nut according to claim 4; It is characterized in that; Said inner sleeve (2) set inside has the tubular outer lug (6) coaxial with it; Said outer sleeve (1) set inside has the tubular internal projection (8) coaxial with it, and said outer lug (6) one ends are fixed on the open end of said inner sleeve (2), and an end of said internal projection (8) is fixed on the relative end of said outer sleeve (1) opening; Said inner sleeve (2) is positioned between said outer sleeve (1) and the internal projection (8), and the other end of said internal projection (8) is fastened between said inner sleeve (2) and the outer lug (6).

6. setting nut according to claim 5 is characterized in that, along the direction of said inner sleeve (2) open end towards its other end, the internal diameter of said internal projection (8) diminishes gradually.

7. setting nut according to claim 2 is characterized in that, an end opening of said draw-in groove (4), and the other end is provided with the block plate, and the opening of said draw-in groove (4) is towards consistent with the tightening direction of said thread-forming screw.

8. setting nut according to claim 4 is characterized in that, the hand of spiral of said outside thread (5) is opposite with the hand of spiral of said thread-forming screw.

9. setting nut according to claim 5 is characterized in that, the length of said outer lug (6) is less than the length of said inner sleeve (2), and the length of said internal projection (8) is less than the length of said outer sleeve (1).

10. according to arbitrary described setting nut among the claim 1-9, it is characterized in that said step surface comprises three step sections, the thickness of the pairing draw-in groove of each step section (4) is respectively 1.2mm, 1.0mm, 0.8mm.