CN217381038U

CN217381038U - Vertical fan connect extension bar soon

Info

Publication number: CN217381038U
Application number: CN202221029142.7U
Authority: CN
Inventors: 李建海; 岑逸雷
Original assignee: Ningbo Rongren Electric Appliance Co ltd
Current assignee: Ningbo Rongren Electric Appliance Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-06
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a vertical fan's meet extension bar soon, including two piece at least hollow extension bars, the extension bar includes first extension bar and second extension bar, the extension bar both ends are equipped with public head end and female head end, be equipped with adapting unit between the public head end of first extension bar and the female head end of second extension bar, this adapting unit sets up to the nut ring, nut ring fixed mounting is in the female head end of second extension bar, the nut ring establishes the inner wall in addition and has the single circle burr of spiral, the public head end of first extension bar corresponds the screw thread section that is equipped with single circle burr threaded connection. The utility model has the advantages of it is following and effect: the mode of adding the connecting part between the two extension bars has the advantages of simple connection, easy operation, low production cost and wide applicable population.

Description

Vertical fan connect extension bar soon

Technical Field

The utility model relates to a connecting pipe technical field, in particular to vertical fan's grafting extension bar soon.

Background

The connecting pipe is a pipeline connecting and lengthening structure which connects the processed and prefabricated pipe sections into a complete system according to the requirements of a design drawing, and is communicated with a to-be-lengthened piece through a specific connecting part to achieve the effect of extending and lengthening.

The prior Chinese patent with publication number CN 205895652U discloses a fan, which comprises a main body, a base and a first adapter, wherein the upper end of the first adapter is fixed with the main body, and the lower end of the first adapter is provided with threads and penetrates through the base and is fixed on the base by matching with a nut; the upper end of the extension bar is fixed with the lower end of the first adapter; the upper end of the second adapter is fixed with the lower end of the lengthening rod, the lower end of the second adapter is provided with threads, and the second adapter penetrates through the base and is fixed on the base through being matched with the nut; extension bar is including installing the first extension pipe of installing at first adapter lower extreme, installing the second extension pipe of second adapter upper end and through threaded connection's the mode install between first extension pipe and the second extension pipe and length-adjustable's connecting pipe. The extension bar can be disassembled into three parts, so that the extension bar can be conveniently stored, and the length of the connecting pipe can be adjusted according to requirements during use, so that the integral height of the fan suitable for being used by a user can be adjusted.

However, the above-mentioned disadvantages exist: the connecting fittings are more, and the cost of a factory for producing the connecting fittings is higher; many rotatory frictional force of connecting fitting screw thread are big, and the user actual operation is got up and is wasted time and energy.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art's defect, the utility model aims at providing a vertical fan's meet soon extension bar adopts the mode that increases adapting unit between two extension bars, has the effect of connecting simply, easily operation, connect stably, low in production cost.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a connect extension bar soon of vertical fan, is including two piece at least hollow extension bars, the extension bar includes first extension bar and second extension bar, the extension bar all is equipped with public head end and female head end, its characterized in that: be equipped with adapting unit between the public head end of first extension bar and the female head end of second extension bar, adapting unit sets up to the nut ring, nut ring fixed mounting in the female head end of second extension bar, the nut ring is equipped with the single circle burr of spiral, the public head end of first extension bar correspond be equipped with the screw thread section of single circle burr threaded connection.

Through adopting above-mentioned technical scheme, when first extension bar coaxial arrangement on the second extension bar, earlier with nut ring fixed mounting in the female head end of second extension bar, then correspond the screw thread section with first extension bar and stretch into in the nut ring, twist soon the screw thread section of first extension bar in the nut ring for the screw thread section passes through the nut ring with the single-ring burr screw-thread fit of nut ring, can install first extension bar on the second extension bar fast. Has the effects of simple connection, easy operation, stable connection and low production cost.

The utility model discloses a further set up to: the lateral wall integrated into one piece of nut ring has a plurality of lugs, a plurality of recesses have been seted up to female head end inner wall of second extension bar, the lug corresponds inlay in the recess, make nut ring relative the female head end of second extension bar splines.

Through adopting above-mentioned technical scheme, through separately processing adapting unit, the part after the processing is in the assembly of mill, impresses the lug in the recess, the nut ring can be fixed female head is served, and the nut ring is interference fit with female head end, prevents that the nut ring is not hard up, and the manual assembly expense has greatly been saved to this kind of mode.

The utility model discloses a further set up to: the lug includes four, four the lug is along the equal interval distribution of nut ring outer wall.

By adopting the technical scheme, the bump comprises four bumps, the volume of a single bump is reduced due to excessive bumps, the effective contact area is increased, the friction force is increased during assembly, the assembly difficulty is improved, and the undersized bumps are easy to deform to influence the use; too few lugs can make the nut ring and the extension bar female head end distribute unevenly, resulting in insecure connection, and the effective embedding area of a single lug can be improved by adopting four lugs, so that the connection stability is improved.

The utility model discloses a further set up to: the convex blocks comprise two large convex blocks and two small convex blocks, and the large convex blocks and the small convex blocks are arranged at intervals.

Through adopting above-mentioned technical scheme, lug interval distribution not of uniform size can limit user extension bar direction of insertion to a certain extent, makes the pattern on the extension bar towards specific face, promotes the pleasing to the eye degree of product.

The utility model discloses a further set up to: the male end of the first extension bar is also provided with a first limit step and a second limit step, the first limit step is abutted with the end surface of the nut ring for limiting, and the second limit step is abutted with the female end of the second extension bar for limiting.

Through adopting above-mentioned technical scheme, spacing step can effectively restrict the length that user extension bar was twisted into in the in-service use, prevents that the user from excessively twisting hard bad internal thread, has played the guard action.

The utility model discloses a further set up to: the thread section is provided with two symmetrical side planes.

Through adopting above-mentioned technical scheme, because the screw thread of public head end is more, it is little to consider some customer strength when connecting two extension bars, so added the side plane and reduced the frictional force between the screw thread, increased the utility model discloses a universality.

The utility model discloses a further set up to: the top of the thread section extends inwards along the radial direction to form an extending part, and the extending part is provided with a thread hole.

By adopting the technical scheme, the electric wires generally pass through the extension bars, the threading holes are specially reserved, and in addition, the extension parts can increase the structural strength of the extension bars, so that the stability of the product is improved, and the safety is also improved.

The utility model discloses a further set up as a plurality of spread grooves have been seted up to the female head end of second extension bar, communicate in the constant head tank of spread groove, the outer wall one-to-one of nut ring is equipped with a plurality of lugs, works as the nut ring install in during the female head end, the lug slides in the spread groove, the nut ring is relative the second extension bar rotates the back, the lug moves to in the constant head tank, the lug with the constant head tank is followed second extension bar axial is spacing.

Through adopting above-mentioned technical scheme, the spread groove is arranged in nut ring axial to insert female head end, and the restriction is played in the constant head tank is rotated to the inserted nut ring circumferencial direction nut ring axial is pulled out, prevents to connect the not hard up effect that leads to the extension bar roll-off between the extension bar in the use.

The utility model discloses a further set up to: the connecting groove and the positioning groove form an L-shaped groove.

The utility model discloses a further set up to: the nut ring is provided with a first annular groove, a metal positioning sheet is embedded in the first annular groove, the outer diameter of the metal positioning sheet is larger than that of the nut ring, and the metal positioning sheet is obliquely arranged relative to the central shaft of the nut ring; the female end of the second extension bar is correspondingly provided with a second annular groove for embedding the metal positioning sheet, the nut ring is provided with a limiting groove, and the inner wall of the female end of the second extension bar is provided with a limiting block corresponding to the limiting groove.

Through adopting above-mentioned technical scheme, first ring channel is seted up to nut ring lateral wall, make things convenient for the installation of metal spacer fixed, the metal spacer sets up for the slope simultaneously, there is the physical property of resilience according to the sheetmetal, the nut ring compresses tightly to the center when pressing into the female head end of second extension bar, it is easier to make the female head end of nut ring embedding become, when the metal spacer inserts female head end second ring channel position, because the second ring channel has the hoop space, the metal spacer stretches out to all around, the metal spacer that stretches out is blocked by the second ring channel promptly, the spacing groove is seted up to nut ring bottom simultaneously, the position that the female head end inner wall of second extension bar corresponds the spacing groove is equipped with the stopper, when the second ring channel is gone into to the metal spacer card, the constant head tank just blocks into the stopper, can prevent that the nut ring from following circumferential direction.

To sum up, the utility model discloses following beneficial effect has: through adding adapting unit between the extension bar, it is more convenient to make the extension bar connect when the assembly becomes, and this adapting unit simple structure can reduce cost, adopts the adapting unit of above-mentioned nut ring in addition, makes to connect more firm through public head end screw thread and female head end nut ring single loop burr screw-thread fit, has played limiting displacement in addition spacing step, improved extension bar stability with the utility model discloses safety in utilization, the side plane has been added to the connecting thread end in addition has reduced installation frictional force, has increased the utility model discloses an application crowd scope.

Drawings

Fig. 1 is a schematic view of the extension bar connection of the present invention.

Fig. 2 is an exploded view of an extension bar according to embodiment 1 of the present invention.

Fig. 3 is a structure view of the male end of the first extension rod of the present invention.

Fig. 4 is a structure view of a female end of a second extension bar according to embodiment 1 of the present invention.

Fig. 5 is a structure view of a nut ring according to embodiment 1 of the present invention.

Fig. 6 is an exploded view of the nut ring and the female end of the second extension rod according to embodiment 2 of the present invention.

Fig. 7 is a sectional view of the nut ring and the female end of the second extension rod according to embodiment 3 of the present invention.

Fig. 8 is a schematic structural view of a nut ring according to embodiment 3 of the present invention.

Fig. 9 is a bottom view of the female end of the second extension rod according to embodiment 3 of the present invention.

In the figure: 1. a first extension bar; 2. a second extension bar; 3. a male end; 4. a female tip; 5. a nut ring; 6. a single loop of raised lines; 7. a threaded segment; 8. a bump; 801. a large bump; 802. a small bump; 9. a groove; 10. a first limit step; 11. a second limit step; 12. a side plane; 13. an extension portion; 14. threading holes; 15. connecting grooves; 16. positioning a groove; 17. a first annular groove; 18. a metal positioning sheet; 19. a second annular groove; 20. a limiting groove; 21. and a limiting block.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1: a vertical fan fast extension rod, as shown in figures 1-5, comprises at least two hollow extension rods, the extension rod comprises a first extension rod 1 and a second extension rod 2, the extension rods are provided with a male end 3 and a female end 4, a connecting part is arranged between the male end 3 of the first extension rod 1 and the female end 4 of the second extension rod 2, the connecting part is provided with a nut ring 5, the side wall of the nut ring 5 is integrally formed with four lugs 8 distributed at equal intervals, the four lugs 8 are respectively two big lugs 801 and two small lugs 802, the big lugs 801 and the small lugs 802 are respectively arranged at intervals, the inner wall of the female end 4 of the second extension rod 2 is correspondingly provided with four grooves 9, when the nut ring 5 is embedded into the female end 4 of the second extension rod 2, the four big lugs and the small lugs are correspondingly embedded into the grooves 9, the nut ring 5 can be prevented from rotating relative to the female end 4 of the second extension rod 2, 5 inner walls of screw ring are equipped with the single circle burr 6 of spiral simultaneously, and the public head end 3 of first extension bar 1 corresponds 6 screw threads of single circle burr and is equipped with screw thread section 7, and screw thread end and single circle burr 6 make first extension bar 1 connect on screw ring 5 through screw-thread fit, and then connect first extension bar 1 and second extension bar 2.

In the embodiment, the connecting part is separately processed, the processed part is assembled in a factory, the lug 8 is pressed into the groove 9, the nut ring 5 can be fixed on the female head end 4, the nut ring 5 and the female head end 4 are in interference fit, the nut ring 5 is prevented from loosening, the manual assembly cost is greatly saved in the mode, and in order to improve the sealing property, the nut ring 5 and the groove 9 are in interference fit, so that the sealing property is improved. In other embodiments, the nut ring 5 may be fixed to the second extension bar 2 by glue or ultrasonic welding, so as to fix the nut ring 5 to the female end 4 of the second extension bar 2.

In order to limit the insertion amount of the first extension bar 1 into the second extension bar 2, the male end 3 of the first extension bar 1 is provided with a first limit step 10 and a second limit step 11, the first limit step 10 is abutted with the end surface of the nut ring 5 for limitation, and the second limit step 11 is abutted with the female end 4 of the second extension bar 2 for limitation.

In order to ensure a more comfortable connection of the first extension bar 1 and the second extension bar 2, the threaded section 7 of the first extension bar 1 is provided with two side planes 12, and the side planes 12 are symmetrically arranged.

In order to further improve the strength of the connecting rod, the top of the threaded section 7 extends inwards along the radial direction to form an extending part 13, in addition, a fan head is installed on a general connecting pipe, a power line needs to be led out from the fan head for electrifying, and therefore a threading hole 14 is further formed in the center of the extending part 13, and the power line can be conveniently penetrated.

The utility model discloses a basic operating principle does: when first extension bar 1 coaxial arrangement is on second extension bar 2, earlier with 5 fixed mounting of screw ring in the female head end 4 of second extension bar 2, then correspond the screw thread section 7 of first extension bar 1 and stretch into in nut ring 5, twist screw thread section 7 of first extension bar 1 soon in nut ring 5 for

screw thread section

7 and 6 screw-thread fit of the single ring burr of screw ring 5 can install first extension bar 1 on second extension bar 2 through screw ring 5 fast. The connecting mode is simple, and the user can easily install and detach the lengthening bar.

Example 2:

as shown in fig. 6, the difference between this embodiment and embodiment 1 is that: four connecting grooves 15 are formed in the female head end 4 of the second extension bar 2, a positioning groove 16 is formed in the side edge of each connecting groove 15, and the positioning grooves 16 are communicated with the connecting grooves 15. Four convex blocks 8 are correspondingly arranged on the outer wall of the nut ring 5 one by one, when the nut ring 5 is installed on the female head end 4, the convex blocks 8 slide into the connecting grooves 15, after the nut ring 5 rotates relative to the second extension bar 2, the convex blocks 8 move into the positioning grooves 16, the convex blocks 8 and the positioning grooves 16 are axially limited along the second extension bar 2, the positioning grooves 16 are added in the embodiment, and the convex blocks 8 of the nut ring 5 can continuously rotate and slide into the positioning grooves 16 after entering the connecting grooves 15.

In this embodiment, the connecting slot 15 and the positioning slot 16 form an L-shaped slot, but the invention is not limited to the L-shape, and all similar structures involving the positioning slot 16 should be included in the scope of this embodiment.

Example 3:

a vertical fan connects extension bar soon, as shown in fig. 7-9, this embodiment is different from embodiment 1 in that: a first annular groove 17 is formed in the side wall of the nut ring 5, a metal positioning piece 18 is embedded in the first annular groove 17, the outer diameter of the metal positioning piece 18 is larger than that of the nut ring 5, and the metal positioning piece 18 is obliquely and upwards arranged relative to the central shaft of the nut ring 5; the inner wall of female head end 4 of second extension bar 2 corresponds and has seted up the second annular groove 19 that supplies metal spacer 18 embedding, and the spacing groove 20 of two symmetries is seted up to the outer wall of nut ring 5, and female head end 4 inner wall of second extension bar 2 corresponds spacing groove 20 and is equipped with two stopper 21.

The side wall of the nut ring 5 is provided with a first annular groove 17, which is convenient for the installation and fixation of the metal positioning sheet 18, and meanwhile, the metal positioning sheet 18 is obliquely arranged, according to the physical property of metal sheet with resilience, the nut ring 5 is pressed towards the center when being pressed into the female end 4 of the second extension bar 2, so that the nut ring 5 is more easily embedded into the female end 4, when the metal positioning sheet 18 is inserted into the second annular groove 19 of the female end 4, because the second annular groove 19 has an annular space, the metal positioning sheet 18 extends to the periphery, the extended metal positioning sheet 18 is clamped by the second annular groove 19, meanwhile, the bottom of the nut ring 5 is provided with a limiting groove 20, the inner wall of the female end 4 of the second extension bar 2 is provided with a limiting block 21 corresponding to the position of the limiting groove 20, when the metal positioning piece 18 is clamped into the second annular groove 19, the positioning groove 16 is just clamped into the limiting block 21, and the nut ring 5 can be prevented from rotating along the circumferential direction.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a connect extension bar soon of vertical fan, is including two piece at least hollow extension bars, the extension bar includes first extension bar (1) and second extension bar (2), the extension bar all is equipped with public head end (3) and female head end (4), its characterized in that: public head end (3) of first extension bar (1) with be equipped with adapting unit between female head end (4) of second extension bar (2), adapting unit sets up to nut ring (5), nut ring (5) fixed mounting in female head end (4) of second extension bar (2), nut ring (5) are equipped with spiral single circle burr (6), public head end (3) correspondence of first extension bar (1) is equipped with screw thread section (7) with single circle burr (6) threaded connection.

2. The quick-connect extension bar of the vertical fan according to claim 1, characterized in that: the lateral wall integrated into one piece of nut ring (5) has a plurality of lugs (8), a plurality of recesses (9) have been seted up to female head end (4) inner wall correspondence of second extension bar (2), lug (8) correspond inlay in recess (9), make nut ring (5) are relative female head end (4) of second extension bar (2) are stopped changeing.

3. The quick-connect extension bar of the vertical fan according to claim 2, characterized in that: the lug (8) comprises four blocks, and the four blocks (8) are distributed at equal intervals along the outer wall of the nut ring (5).

4. The quick-connect extension bar of the vertical fan as claimed in claim 3, wherein: the bump (8) comprises two large bumps (801) and two small bumps (802), and the large bumps (801) and the small bumps (802) are arranged at intervals.

5. The quick-connect extension bar of the vertical fan according to claim 1, characterized in that: the male end (3) of the first extension bar (1) is further provided with a first limiting step (10) and a second limiting step (11), the first limiting step (10) is abutted to the end face of the nut ring (5) for limiting, and the second limiting step (11) is abutted to the female end (4) of the second extension bar (2) for limiting.

6. The quick-connect extension bar of the vertical fan according to claim 1, characterized in that: the thread section (7) is provided with two symmetrical side planes (12).

7. The quick-connect extension bar of the vertical fan according to claim 1, characterized in that: the top of the threaded section (7) extends inwards along the radial direction to form an extending part (13), and the extending part (13) is provided with a threading hole (14).

8. The quick-connect extension bar of the vertical fan according to claim 1, characterized in that: a plurality of spread grooves (15), communicate in female head end (4) of second extension bar (2) seted up a plurality of spread grooves (15) constant head tank (16) of spread groove (15), the outer wall one-to-one of nut ring (5) is equipped with a plurality of lugs (8), works as nut ring (5) install in during female head end (4), lug (8) slide in spread groove (15), nut ring (5) are relative second extension bar (2) rotate the back, lug (8) move to in constant head tank (16), lug (8) with constant head tank (16) are followed second extension bar (2) axial is spacing.

9. The quick-connect extension bar of a vertical fan according to claim 8, wherein: the connecting groove (15) and the positioning groove (16) form an L-shaped groove.

10. The quick-connect extension bar of the vertical fan according to claim 1, characterized in that: the nut ring (5) is provided with a first annular groove (17), a metal positioning sheet (18) is embedded in the first annular groove (17), the outer diameter of the metal positioning sheet (18) is larger than that of the nut ring (5), and the metal positioning sheet (18) is obliquely arranged relative to the central shaft of the nut ring (5); the female head end (4) of second extension bar (2) is correspondingly provided with a second annular groove (19) for embedding metal positioning sheet (18), the nut ring (5) is provided with a limiting groove (20), and the inner wall of the female head end (4) of second extension bar (2) is provided with a limiting block (21) corresponding to the limiting groove (20).