Liftable branch pipe mechanism of electric fan

Abstract

The utility model relates to household electric fan products, and provides an electric fan liftable branch pipe mechanism which comprises a base, an outer pipe, an inner pipe, a lifting assembly and a lifting branch pipe, the outer pipe is installed on the upper surface of the base, the inner pipe penetrates through the outer pipe and is connected with the base, and the lifting branch pipe is arranged on the outer wall of the inner pipe in a sleeving mode; the lifting assembly comprises a volute spring and a positioning part, the volute spring is installed at the end, away from the base, of the inner pipe, the stretching section of the volute spring is connected with the end, close to the base, of the lifting branch pipe, and the positioning part is used for fixing the lifting branch pipe and the outer pipe. According to the liftable branch pipe mechanism of the electric fan, the occupied space of the fan is reduced, and the product can be designed to be smaller and more attractive.

Description

TECHNICAL FIELD

[0001] The present application relates to household electric fan products, in particular to a liftable supporting pipe mechanism of electric fan. BACKGROUND

[0002] Fan is a traditional cooling tool, which uses electric energy to drive fan blades to rotate, and the rotating fan agitates air to flow to achieve the effect of cooling. The supporting pipe of the current floor fan is generally designed to be adjustable in height to meet the user's needs.

[0003] The existing height-adjustable fan includes a base, an outer pipe fixed above the base, a supporting pipe slidingly installed in the outer pipe, and a spiral spring. One end of the spiral spring is fixed to the inner bottom wall of the outer pipe, and the other end of the spiral spring is fixed to one end of the supporting pipe close to the outer pipe. The elastic force of the spiral spring is used to drive the supporting pipe to move away from the outer pipe, and the outer pipe is provided with a positioning component for fixing the position of the supporting pipe. When working, the fixing of the outer pipe and the supporting pipe is cancelled by the positioning component, and the supporting pipe moves away from the outer pipe under the elasticity of the spiral spring, thereby playing the role of automatically lifting the height of the fan.

[0004] Since the spiral spring is arranged inside the outer pipe and has a compression amount, the spiral spring occupies a large space inside the outer pipe, thereby causing the lifting height of the supporting pipe to be much smaller than the length of the outer pipe. If the lifting height of the supporting pipe needs to be increased, the length of the outer pipe must be increased, which makes the fan occupy a large space and needs to be improved. CONTENT OF THE INVENTION

[0005] In order to reduce the space occupied by the fan and make the product smaller and more beautiful, the present application provides a liftable supporting pipe mechanism of electric fan.

[0006] The liftable supporting pipe mechanism of electric fan provided by the present application adopts the following technical scheme:

[0007] A liftable supporting pipe mechanism of electric fan includes a base, an outer pipe, an inner pipe, a lifting assembly, and a lifting supporting pipe. The outer pipe is installed on the upper surface of the base, the inner pipe is connected to the outer pipe and the base, and the lifting supporting pipe is sleeved on the outer wall of the inner pipe. The lifting assembly includes a volute spring and a positioning component. The volute spring is installed at one end of the inner pipe away from the base, the stretching section of the volute spring is connected to one end of the lifting supporting pipe close to the base, and the positioning component is used to fix the lifting supporting pipe and the outer pipe.

[0008] When the user needs to adjust the height of the electric fan, the fixing of the lifting support rod and the outer tube is cancelled first by the positioning component; since the stretched end of the volute spring is connected with the lifting spring, the lifting support rod can move towards the side away from the base under the elastic force of the volute spring, so that the fan is automatically lifted under the elastic force of the volute spring, and after reaching the required height, the positioning component is operated again to lock the lifting support rod and the outer tube, preventing automatic movement thereof.

[0009] The volute spring is arranged inside the inner tube, and the stretched section of the volute spring is arranged on the lifting support rod; the lifting support rod has the effect of automatic lifting, and the length of the lifting support rod can be kept the same as the length of the outer tube, so that the occupied space of the fan is reduced, and the product can be designed to be smaller and more beautiful.

[0010] Optionally, the positioning component comprises a movable ring, an unlocking piece, a fixing spring and a fixing block arranged on the inner wall of the movable ring, the movable ring is sleeved on the outer wall of the lifting support rod, a plurality of fixing grooves for inserting the fixing block are formed in the outer wall of the lifting support rod; the fixing spring is used to drive the fixing block to be inserted into the fixing groove in a normal state, and the unlocking piece is used to cancel the insertion of the fixing block and the fixing groove.

[0011] By adopting the above technical scheme, when the lifting support rod is adjusted to the required height, the position of the movable ring is moved, so that the fixing block is re-inserted into the fixing groove, thereby reducing the free sliding of the lifting support rod; and the elastic force of the fixing spring can drive the fixing block to be inserted into the fixing groove in a normal state, thereby reducing the possibility of free movement of the lifting support rod when the user uses the fan.

[0012] Optionally, the unlocking piece comprises a rotating rod and a mounting portion, the mounting portion is fixed to the outer tube, and the rotating rod is rotatably mounted to the mounting portion through a rotating shaft; the rotating rod abuts against the outer wall of the movable ring under the elastic force of the fixing spring.

[0013] By adopting the above technical scheme, when it is needed to cancel the fixing of the lifting support rod and the outer tube, the end of the rotating rod away from the movable ring is pressed, so that the rotating rod rotates on the mounting portion, thereby canceling the insertion of the fixing block and the fixing groove.

[0014] Optionally, the outer wall of the outer tube is provided with an unlocking shell, and the unlocking shell covers the outer wall of the unlocking piece; the unlocking shell movably mounts an unlocking plate, and the unlocking plate is used to abut against the end of the rotating rod away from the movable ring.

[0015] By adopting the above technical scheme, the unlocking piece can be protected by arranging the unlocking shell and the unlocking plate, thereby reducing the damage caused by collision of the unlocking piece; and the rotating rod can be rotated by pressing the unlocking plate, so as to cancel the insertion of the fixing block and the fixing groove, thereby facilitating the adjustment of the position of the lifting support rod.

[0016] Optionally, the lifting branch pipe is fixed with a sliding sleeve at one end close to the base, the sliding sleeve is sleeved on the outer wall of the inner pipe, the stretching end of the volute spring is fixed with the sliding sleeve; the sliding sleeve is provided with a sliding seat, and the inner pipe is provided with a sliding groove for the sliding seat to slide.

[0017] By adopting the above technical scheme, the stability of the lifting branch pipe sliding on the inner pipe is increased, and the relative rotation between the lifting branch pipe and the inner pipe is reduced.

[0018] Optionally, a rotating seat is mounted on the upper surface of the base, the outer pipe and the inner pipe are both fixed on the rotating seat, and the base is provided with a swing head assembly for driving the rotating seat to rotate.

[0019] By adopting the above technical scheme, the rotating seat can be rotated on the base by starting the swing head assembly; since the outer pipe and the inner pipe are both fixed on the rotating seat, the blowing position of the fan head on the lifting branch pipe is changed, and different positions in the room can be cooled by the fan.

[0020] Optionally, the swing head assembly comprises a servo motor, a gear and a rotating part, the rotating part is fixed on the rotating seat, and the outer peripheral wall of the rotating part is provided with a gear slot; the servo motor is fixed on the base, the gear is mounted on the output shaft of the servo motor, and the gear is engaged with the gear slot.

[0021] By adopting the above technical scheme, the gear can be rotated by starting the servo motor, and since the gear is engaged with the rotating part on the rotating seat, the rotating seat can be rotated on the base.

[0022] Optionally, the inner wall of the outer pipe is provided with a positioning friction ring, and the positioning friction ring is used to abut against the outer wall of the lifting branch pipe.

[0023] By adopting the above technical scheme, the friction between the outer pipe and the lifting branch pipe is increased by arranging the positioning friction ring, and the stability of the lifting branch pipe fixed on the outer pipe is further increased.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. By arranging the volute spring inside the inner pipe and arranging the stretching section of the volute spring on the lifting branch pipe, the lifting branch pipe has the effect of automatically rising, the length of the lifting branch pipe is kept the same as the length of the outer pipe, the occupied space of the fan is reduced, and the product can be designed to be smaller and more beautiful.

[0026] 2. By setting the swing head assembly, the rotating seat can rotate on the base; since the outer tube and the inner tube are fixed on the rotating seat; so that the fan head on the lifting branch pipe changes the blowing position, which can blow and cool different positions in the room;

[0027] 3. By setting the positioning friction ring, the friction between the outer tube and the lifting branch pipe can be increased, further increasing the stability of the lifting branch pipe fixed on the outer tube. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a partial sectional view of the embodiment;

[0029] Figure 2 is a structure schematic view of the swing head assembly of the embodiment;

[0030] Figure 3 is a partial sectional view of the inner tube of the embodiment;

[0031] Figure 4 is Figure 1 a partial enlarged view of a of the;

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, base; 11, rotating seat; 12, rotating groove; 13, mounting disc; 2, outer tube; 21, unlocking shell; 22, unlocking plate; 23, first limiting column; 24, reset spring; 25, third limiting column; 26, positioning friction ring; 27, decorative cover; 28, power shell; 29, supporting block; 3, inner tube; 31, sliding groove; 4, lifting assembly; 41, volute spring; 42, positioning component; 43, movable ring; 44, unlocking piece; 441, rotating rod; 442, mounting part; 443, second limiting column; 45, fixed spring; 46, fixed block; 47, movable hole; 5, lifting branch pipe; 51, sliding sleeve; 52, sliding seat; 53, fixed groove; 6, swing head assembly; 61, servo motor; 62, gear; 63, rotating part; 64, gear slot. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the Figures 1-4 The application is further described in detail.

[0034] The embodiment of the application discloses an electric fan liftable branch pipe mechanism.

[0035] Refer to Figure 1 An electric fan liftable branch pipe mechanism, comprising a base 1, an outer tube 2, an inner tube 3, a lifting assembly 4 and a lifting branch pipe 5, the base 1 is rotationally installed with a rotating seat 11, the outer tube 2 is fixed on the rotating seat 11, and the inner tube 3 is arranged in the outer tube 2 and fixed with the rotating seat 11; the lifting branch pipe 5 is slidingly installed between the outer tube 2 and the inner tube 3, and the lifting branch pipe 5 is used for adjusting the position of the lifting branch pipe 5 on the outer tube 2.

[0036] With reference to Figure 2 , the base 1 is provided with a swing head assembly 6, the swing head assembly 6 comprising a servo motor 61, a gear 62 and a rotating part 63, the base 1 is provided with a rotating groove 12, the bottom wall of the rotating groove 12 is fixedly provided with a mounting disc 13, and the rotating seat 11 is rotatably mounted on the mounting disc 13; the rotating part 63 is mounted in the rotating groove 12 and fixedly connected with the rotating seat 11, the outer peripheral wall of the rotating part 63 is arc-shaped and provided with a gear slot 64, and the gear 62 is rotatably mounted in the rotating groove 12 and engaged with the gear slot 64; the servo motor 61 is fixed on the base 1, and the output shaft of the servo motor 61 is connected with the gear 62. Starting the servo motor 61, the rotating seat 11 rotates under the engagement of the gear 62 and the gear slot 64 of the rotating part 63, thereby changing the fan blowing position.

[0037] With reference to Figure 3 , the lifting branch pipe 5 is fixedly provided with a sliding sleeve 51 near one end of the base 1, and the sliding sleeve 51 is sleeved on the outer wall of the inner pipe 3; the outer wall of the inner pipe 3 is provided with a sliding groove 31, and the extension direction of the sliding groove 31 is the same as that of the inner pipe 3; the inner wall of the sliding sleeve 51 is provided with a sliding seat 52, and the sliding seat 52 is slidably mounted in the sliding groove 31.

[0038] With reference to Figure 3 , the lifting assembly 4 comprises a volute spring 41 and a positioning component 42, the inner part of the inner pipe 3 is hollow, the volute spring 41 is mounted in the inner part of the inner pipe 3 and located at one end of the inner pipe 3 away from the base 1, and the rope section of the volute spring 41 is arranged in the sliding groove 31 and fixedly connected with the sliding seat 52. The elastic force of the volute spring 41 can move the sliding seat 52 towards one side of the volute spring 41, thereby achieving the function of automatic lifting of the lifting branch pipe 5.

[0039] With reference to Figure 4 , the positioning component 42 comprises a movable ring 43, an unlocking part 44, a fixed spring 45 and a fixed block 46, the outer wall of the outer pipe 2 away from the base 1 is fixedly provided with an unlocking shell 21, the unlocking shell 21 is communicated with the inner part of the outer pipe 2, and the unlocking rod is movably mounted with an unlocking plate 22 away from one side of the outer pipe 2; the unlocking part 44 comprises a rotating rod 441 and a mounting part 442, the mounting part 442 is arranged in the unlocking shell 21 and fixedly connected with the shell, and the rotating rod 441 is rotatably mounted on the mounting part 442.

[0040] A reset spring 24 is arranged between the unlocking plate 22 and the rotating rod 441, the unlocking plate 22 is provided with a first limiting column 23, the rotating rod 441 is provided with a second limiting column 443, and the reset spring 24 is sleeved on the outer part of the first limiting column 23 and the second limiting column 443; the elastic force of the reset spring 24 is used to drive the rotating rod 441 and the unlocking plate 22 to move towards the side away from each other.

[0041] The outer wall of the shell is provided with a third limiting column 25, and a fixing spring 45 is sleeved on the outer wall of the third limiting column 25. One end of the fixing spring 45 is fixed to the outer wall of the shell, and the other end of the fixing spring 45 abuts against the outer wall of the rotating rod 441. In this embodiment, the elastic force of the fixing spring 45 is greater than the elastic force of the return spring 24, and the elastic force of the fixing spring 45 is used to drive the rotating rod 441 to move towards one side of the unlocking plate 22.

[0042] The movable ring 43 is sleeved on the outer wall of the lifting branch pipe 5, and the inner wall of the branch pipe is provided with two supporting blocks 29. The movable ring 43 is clamped between the two supporting blocks 29, so as to improve the stability of the movable ring 43 moving on the outer wall of the lifting branch pipe 5.

[0043] The movable ring 43 is provided with a movable hole 47, and one end of the rotating rod 441 away from the fixing spring 45 is inserted into the movable hole 47. The rotating rod 441 abuts tightly against one side of the movable hole 47 close to the lifting branch pipe 5 under the elastic force of the fixing spring 45. The inner wall of the movable ring 43 is provided with a fixing block 46, and the outer wall of the lifting branch pipe 5 is provided with a plurality of fixing grooves 53 for inserting the fixing block 46. All the fixing grooves 53 are arranged along the length direction of the lifting branch pipe 5.

[0044] Referring to Figure 1 and Figure 3 , the outer pipe 2 is provided with a power shell 28 on the side away from the unlocking shell 21, and the power shell 28 is provided with a control module for starting and stopping the fan. The outer pipe 2 is provided with a decorative cover 27 on the end away from the base 1. The decorative cover 27 is used to hide the gap between the outer pipe 2 and the lifting pipe, and prevent sundries from entering the inner part of the outer pipe 2. The inner wall of the decorative cover 27 is provided with a supporting piece, and the supporting piece is installed with a positioning friction ring 26 made of rubber material. The positioning friction ring 26 is sleeved on the lifting branch pipe 5 and abuts against the outer wall of the lifting branch pipe 5. The positioning friction ring 26 can increase the friction force between the outer pipe 2 and the lifting branch pipe 5, and further increase the stability of the lifting branch pipe 5 fixed on the outer pipe 2.

[0045] The implementation principle of the lifting branch pipe 5 mechanism of the electric fan in the embodiment of the application is as follows:

[0046] When the user needs to adjust the height of the electric fan, the user presses the unlocking plate 22 so that the first limiting column 23 and the second limiting column 443 abut against each other to rotate the rotating rod 441; since the rotating rod 441 is rotatably installed on the mounting portion 442, the rotating rod 441 can abut against the inner wall of the side of the movable hole 47 away from the inner ring and pull the movable ring 43, so as to cancel the insertion of the fixing block 46 and the fixed slot 53. At this time, the lifting branch pipe 5 moves away from the base 1 under the elastic force of the volute spring 41, and the fan is automatically lifted under the elastic force of the volute spring 41. After reaching the required height, the pressing on the unlocking plate 22 is cancelled, the fixing block 46 is inserted into the fixed slot 53 under the elastic force of the fixed spring 45, so as to re-lock the lifting branch pipe 5 and the outer pipe 2, and prevent automatic movement.

[0047] The volute spring 41 is arranged inside the inner pipe 3, and the stretching section of the volute spring 41 is arranged on the lifting branch pipe 5; the lifting branch pipe 5 has the effect of automatic lifting, and the length of the lifting branch pipe 5 is kept the same as the length of the outer pipe 2, so as to reduce the occupied space of the fan, and the product can be designed to be smaller and more beautiful.

[0048] The above is the preferred embodiment of the present application, which does not limit the protection scope of the present application, so that: any equivalent change made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An electric fan liftable stem mechanism characterized by: The utility model provides a kind of lifting device, including base (1), outer tube (2), inner tube (3), lifting assembly (4) and lifting branch pipe (5), the outer tube (2) is installed on the upper surface of base (1), the inner tube (3) is connected with base (1) by being passed in outer tube (2), the lifting branch pipe (5) is sleeved on the outer wall of inner tube (3);The lifting assembly (4) includes volute spring (41) and positioning component (42), the volute spring (41) is installed at the end of inner tube (3) away from base (1), the stretching section of volute spring (41) is connected with the end of lifting branch pipe (5) close to base (1), and the positioning component (42) is used to fix lifting branch pipe (5) and outer tube (2).

2. A mechanism for lifting and lowering a stem of an electric fan as claimed in claim 1, wherein: The positioning component (42) includes movable ring (43), unlocking piece (44), fixed spring (45) and fixed block (46) arranged on the inner wall of movable ring (43), the movable ring (43) is sleeved on the outer wall of lifting branch pipe (5), and the outer wall of lifting branch pipe (5) is provided with a plurality of fixed grooves (53) for inserting the fixed block (46); the fixed spring (45) is used to drive the fixed block (46) to be inserted in the fixed groove (53) in normal state, and the unlocking piece (44) is used to cancel the insertion of the fixed block (46) and the fixed groove (53).

3. A mechanism for lifting and lowering a stem of an electric fan as claimed in claim 2, wherein: The unlocking piece (44) includes rotating rod (441) and mounting portion (442), and the mounting portion (442) is fixed to the outer tube (2); the rotating rod (441) is rotatably mounted to the mounting portion (442) through a rotating shaft, and the rotating rod (441) abuts against the outer wall of the movable ring (43) under the elastic force of the fixed spring (45).

4. A mechanism for lifting and lowering a stem of an electric fan as claimed in claim 3, wherein: The outer wall of the outer tube (2) is provided with an unlocking shell (21), and the unlocking shell (21) covers the outer wall of the unlocking piece (44); the unlocking shell (21) movably mounts an unlocking plate (22), and the unlocking plate (22) is used to abut against the end of the rotating rod (441) away from the movable ring (43).

5. A mechanism for lifting and lowering the stem of an electric fan as claimed in claim 1, wherein: The end of the lifting branch pipe (5) close to the base (1) is fixed with a sliding sleeve (51), the sliding sleeve (51) is sleeved on the outer wall of the inner tube (3), and the stretching end of the volute spring (41) is fixed with the sliding sleeve (51); the sliding sleeve (51) is provided with a sliding seat (52), and the outer wall of the inner tube (3) is provided with a sliding groove (31) for sliding of the sliding seat (52).

6. A lift mechanism for the vertical adjustment of the height of a fan support arm according to claim 1, wherein: The upper surface of the base (1) is provided with a rotating seat (11), and the outer tube (2) and the inner tube (3) are fixed to the rotating seat (11); the base (1) is provided with a swing head assembly (6) for driving the rotating seat (11) to rotate.

7. A lift mechanism for the vertical adjustment of the height of a fan support arm according to claim 6, wherein: The swing head assembly (6) includes a servo motor (61), a gear (62) and a rotating portion (63), the rotating portion (63) is fixed to the rotating seat (11), and the outer circumferential wall of the rotating portion (63) is provided with a gear groove (64); the servo motor (61) is fixed to the base (1), and the gear (62) is mounted on the output shaft of the servo motor (61), and the gear (62) and the gear groove (64) are engaged.

8. A mechanism for lifting and lowering a stem of an electric fan as claimed in claim 1, wherein: The outer tube (2) is provided with a positioning friction ring (26) on the inner wall, which is used for abutting with the outer wall of the lifting branch pipe (5).

Images