Pitching circulating fan convenient to assemble and maintain

Abstract

The pitching circulating fan convenient to assemble and maintain comprises a fan head assembly, a pitching mechanism and a head shaking support, the fan head assembly is provided with a fan head frame, a front fan cover and a rear fan cover, and the fan head frame is provided with an annular shell, a connecting base and a supporting rod; the connecting base is arranged in the middle of the annular shell and fixedly connected with the annular shell through a plurality of supporting rods. The front fan cover and the rear fan cover are detachably arranged on the front side and the rear side of the annular shell correspondingly. The pitching mechanism is arranged on the connecting base of the fan head frame and connected with the head shaking support, and the pitching mechanism drives the fan head assembly to conduct pitching circulation air supply. Therefore, the front fan cover and the rear fan cover are detachably mounted on the annular shell of the fan head frame, so that the assembling convenience and the mounting stability of the pitching circulating fan are improved, daily maintenance is facilitated, the occupied space of the fan head assembly is saved, and the overall shape of the pitching circulating fan is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a tilting circulation fan that is easy to assemble and maintain. Background Technology

[0002] A tilt-adjustable air circulator is an air circulator with tilt adjustment. By adjusting the tilt angle of the fan, it can direct airflow in different directions, effectively improving indoor air circulation and comfort, and adapting to various usage scenarios. For example, Chinese utility model patent CN221347340U, entitled "A Fan Oscillating Head Structure," discloses a support base, a transmission box, a fan head, and an oscillation mechanism. The fan head and support base are respectively arranged on two perpendicular directions outside the transmission box; the oscillation mechanism is located inside the transmission box and connected to the support base, causing the transmission box to rotate left and right relative to the support base, thus driving the fan head to oscillate; the oscillation mechanism is connected to the fan head, and the oscillation mechanism drives the transmission box to tilt relative to the support base, thereby driving the fan head to oscillate.

[0003] However, the existing technology still has the following drawbacks: In existing pitch-type circulating fans, the assembly of the fan head and the transmission box is usually arranged on the outside of the support base in two vertical directions. The front and rear covers of the fan head are only fixed to each other by a ring clamp. Therefore, the overall assembly stability of the fan head is not high enough, which will affect the fan's pitch and oscillation. Moreover, disassembly and assembly are not convenient, causing inconvenience for later maintenance. In addition, the transmission box is installed on the outside of the fan head, which occupies a lot of space and increases the overall size of the fan. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a pitch circulation fan that is easy to assemble and maintain.

[0005] The purpose of this utility model is achieved by the following technical solution: a pitch-circulation fan that is easy to assemble and maintain, including a fan head assembly, a pitch mechanism and an oscillating bracket, wherein the fan head assembly has a fan head frame, a front fan cover and a rear fan cover, and the fan head frame has an annular shell, a connecting seat and a support rod.

[0006] The connecting seat is located in the middle of the annular shell and is fixedly connected to the annular shell by several support rods. The front fan cover and the rear fan cover are respectively detachably arranged on the front and rear sides of the annular shell.

[0007] The pitch mechanism is mounted on the connecting seat of the fan head frame and connected to the oscillating bracket. The pitch mechanism drives the fan head assembly to pitch and circulate air.

[0008] Furthermore, the annular housing has a first housing and a second housing, the connecting seat is disposed in the middle of the first housing and is fixedly connected to the first housing by a plurality of the support rods and arranged between the front fan cover and the rear fan cover, and the second housing is detachably disposed on the outer periphery of the first housing;

[0009] The front cover is detachably disposed on the front side of the second housing, and the rear cover is detachably disposed on the rear side of the first housing.

[0010] Furthermore, an annular groove is provided on the front side of the second housing, and a plurality of locking pins are provided along the groove wall direction. A slot is provided on the edge of the front fan cover, and the front fan cover is detachably mounted on the annular groove of the second housing through the snap-fit ​​connection of the locking pins via the slot.

[0011] Furthermore, the fan head assembly has a rear cover, the edge of which is provided with a fastener, and the edge of the rear fan cover is provided with a snap hole. The rear cover is detachably mounted on the rear fan cover by being snapped together with the fastener and the snap hole, and covers the rear side of the annular housing.

[0012] Furthermore, the connecting seat is provided with fan blades and a blower motor for driving the fan blades to rotate, and the support rod is provided with a first clearance portion adapted to the rotation trajectory of the fan blades on the air supply side.

[0013] Furthermore, the pitch mechanism has a crank-connecting rod assembly and a pitch motor, one end of the crank-connecting rod assembly is connected to the pitch motor, and the other end is connected to the yaw bracket.

[0014] Furthermore, the oscillating bracket has a support base and two support arms disposed on the support base. The two support arms are connected to the left and right sides of the connecting base and arranged inside the crank-connecting rod assembly. The support arms have a second clearance portion that corresponds to the pitch trajectory of the pitch motor and the crank-connecting rod assembly.

[0015] Furthermore, the rear shroud has a guide hole adapted to the support arm, and the guide hole extends along the pitch direction of the rear shroud.

[0016] Furthermore, the blower motor and the pitch motor are fixedly mounted on the connecting seat via motor mounts.

[0017] Furthermore, the blower motor and the pitch motor are covered with motor covers.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the fan head frame, the front fan cover and the rear fan cover can be detachably installed on the annular shell of the fan head frame. Compared with the previous implementation method of using annular clamps to fix the front fan cover and the rear fan cover to each other, the assembly is more convenient, the daily maintenance is easier, the installation stability of the front fan cover and the rear fan cover is higher, and the problem of large vibration and loose parts when the circulating fan is performing pitching and air blowing is avoided.

[0019] Furthermore, by mounting the fan blades, blower motor, and pitch mechanism all on the fan head frame, the fan blades, blower motor, and pitch mechanism can be housed within the assembly space of the front and rear fan covers when the front and rear fan covers are installed on the annular housing of the fan head frame. Compared to the previous method of mounting the entire transmission box, including the motor, on the outside of the fan head, this method saves more space occupied by the fan head components, provides greater installation stability for the motor, and reduces the overall size of the pitch circulation fan. Attached Figure Description

[0020] Figure 1 This is an exploded view of the structure between the rear fan cover, the rear cover and the annular shell in a preferred embodiment of the present invention;

[0021] Figure 2 This is an exploded view of the structure between the front fan cover and the annular shell in a preferred embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structural assembly between the fan head frame, the pitching mechanism and the oscillating bracket in a preferred embodiment of the present invention;

[0023] Figure 4 This is a perspective view of the pitch-up circulating fan in a preferred embodiment of the present invention.

[0024] In the picture:

[0025] 10. Fan head assembly; 101. Fan head frame; 1011. First housing; 1012. Second housing; 10121. Annular groove; 10122. Locking pin; 1013. Connecting seat; 1014. Support rod; 10141. First clearance part; 102. Front fan cover; 1021. Slot; 103. Rear fan cover; 1031. Snap hole; 1032. Guide hole; 104. Rear cover; 1041. Fastener;

[0026] 20. Pitch mechanism; 201. Crank-connecting rod assembly; 21. Pitch motor;

[0027] 30. Oscillating bracket; 301. Support base; 302. Support arm; 3021. Second clearance part;

[0028] 40. Fan blades; 41. Blower motor;

[0029] 50. Motor mount; 51. Motor cover. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] like Figure 1-4 As shown, a tilt-and-circulate fan that is easy to assemble and maintain is suitable for both home and industrial use. This easy-to-assemble and maintain tilt-and-circulate fan includes a fan head assembly 10, a tilt mechanism 20, and an oscillating bracket 30. The fan head assembly 10 includes a fan head frame 101, a front fan cover 102, a rear fan cover 103, a rear cover 104, fan blades 40, and a blower motor 41. The tilt mechanism 20 includes a crank-connecting rod assembly 201 and a tilt motor 21 for driving the crank-connecting rod assembly 201 to oscillate. The oscillating bracket 30 includes a support base 301 and two support arms 302 mounted on the support base 301.

[0032] Specifically, the fan head frame 101 includes a first housing 1011, a second housing 1012, a connecting seat 1013, and support rods 1014. The first housing 1011 and the second housing 1012 are arranged in a ring structure. The second housing 1012 is detachably disposed on the outer periphery of the first housing 1011, so that the first housing 1011 and the second housing 1012 are arranged in an inner and outer ring assembly relationship. The connecting seat 1013 is disposed in the middle of the first housing 1011, and several support rods 1014 are arranged in an equidistant array around the connecting seat 1013. The connecting seat 1013 is fixedly connected to the first housing 1011 through the several support rods 1014. This constitutes the overall structure of the fan head frame 101. As the main load-bearing support structure of the fan head assembly 10, the fan head frame 101 can strengthen the structural strength of the fan head assembly 10.

[0033] An annular groove 10121 is provided around the front side of the second housing 1012. The annular groove 10121 is formed by a recess in one part of the front side of the second housing 1012. A plurality of locking pins 10122 are provided along the periphery of the groove wall of the annular groove 10121. The locking pins 10122 are integrally protruding from the groove wall of the annular groove 10121. A slot 1021 is provided on the edge of the front cover 102. When installing the front cover 102, the slot 1021 of the front cover 102 can be rotated and snapped with the locking pins 10122 to detachably mount the front cover 102 onto the annular groove 10121 of the second housing 1012, thereby positioning the front cover 102 on the front side of the second housing 1012.

[0034] Since the first housing 1011 and the second housing 1012 are separated by a certain distance, an assembly gap is formed between them. Several assembly seats are provided on one side of the first housing 1011 located within the assembly gap. The rear fan cover 103 has an annular plate around its perimeter. Therefore, the annular plate around the rear fan cover 103 can be detachably connected to the assembly seats in the assembly gap via screws or snap-fit ​​connections, thereby arranging the rear fan cover 103 on the rear side of the first housing 1011.

[0035] Therefore, by separating the fan head frame 101 into a first housing 1011 and a second housing 1012, it is convenient to quickly install the front fan cover 102 and the rear fan cover 103 on the front and rear sides of the fan head frame 101, making installation easy. It also achieves the effect of completely housing the fan head frame 101 between the front fan cover 102 and the rear fan cover 103, saving space. Furthermore, by setting the first housing 1011 and the second housing 1012, the shape and structure of the first housing 1011 and the second housing 1012 can be independently designed, especially different from the traditional circular design of the fan head assembly 10, improving the overall aesthetics of the fan head assembly 10 and enhancing its market competitiveness. In addition, when one of the first housing 1011 or the second housing 1012 is damaged, it can be replaced independently without replacing the entire housing on the fan head frame 101, thus achieving a more convenient maintenance compared to the previous method of installing the front fan cover 102 and the rear fan cover 103 on the same housing.

[0036] The annular plate around the rear fan cover 103 is also provided with a snap hole 1031, and the edge of the rear cover 104 is provided with a fastener 1041. The fastener 1041 is snapped into the snap hole 1031, so that the rear cover 104 can be detachably installed on the rear fan cover 103. Moreover, the rear cover 104 shell is correspondingly covered in the assembly gap formed between the first shell 1011 and the second shell 1012, so that the rear cover 104 covers the rear side of the rear fan cover 103, which is used to strengthen the assembly stability between the fan head frame 101 and the rear fan cover 103 and further improve the aesthetics of the fan head assembly 10.

[0037] In the actual assembly of the pitch-down circulating fan, before installing the front fan cover 102 and the rear fan cover 103, the fan blades 40, the blower motor 41, and the pitch mechanism 20 are first installed on the fan head frame 101. The fan blades 40 are installed on the front side of the connecting seat 1013, and the blower motor 41 and the pitch motor 21 are installed on the rear side of the connecting seat 1013 through the motor mount 50. The output shaft of the blower motor 41 is connected to the fan blades 40 for transmission, thereby driving the fan blades 40 to rotate and blow air in front of the fan head frame 101. After the blower motor 41 and the pitch motor 21 are installed, the motor cover 51 is then covered. The motor cover 51 can enhance the installation stability of the blower motor 41, the pitch motor 21, and the motor mount 50 on the connecting seat 1013, and can also prevent dust.

[0038] One end of the crank-connecting rod assembly 201 of the pitch mechanism 20 is connected to the output shaft of the pitch motor 21, and the other end of the crank-connecting rod assembly 201 is fixedly connected to the support arm 302 of the oscillating bracket 30. Moreover, the crank-connecting rod assembly 201 is also arranged on the outside of the support arm 302 to facilitate the daily assembly and maintenance of the crank-connecting rod assembly 201.

[0039] Therefore, by setting up the fan head frame 101, the front fan cover 102 and the rear fan cover 103 can be detachably installed on the annular shell of the fan head frame 101. Compared with the previous implementation method of using annular clamps to fix the front fan cover 102 and the rear fan cover 103 to each other, the assembly is more convenient, the daily maintenance is easier, and the installation stability of the front fan cover 102 and the rear fan cover 103 is higher. This can avoid the problem of large vibration and loose parts when the circulating fan is performing pitching and oscillating air delivery.

[0040] Furthermore, by mounting the fan blades 40, the blower motor 41, and the pitch mechanism 20 all on the fan head frame 101, when the front fan cover 102 and the rear fan cover 103 are installed on the front and rear sides of the annular housing of the fan head frame 101, the fan blades 40, the blower motor 41, and the pitch mechanism 20 can be housed within the assembly space of the front fan cover 102 and the rear fan cover 103. Compared with the previous implementation method of mounting the entire transmission box, including the motor, outside the fan head, this method saves more space occupied by the fan head assembly 10, provides higher installation stability for the motor, and reduces the overall size of the pitch circulation fan.

[0041] Furthermore, a first clearance portion 10141 is provided on the side of each support rod 1014 that directs airflow towards the fan blade 40. This first clearance portion 10141 is formed by the concave deformation of the support rod 1014 in the opposite direction of airflow. Therefore, the fan blade 40 will not collide with the support rod 1014 during the rotation and airflow process, thus ensuring the normal daily operation of the pitch-up circulating fan and making the overall assembly structure of the fan head assembly 10 more coordinated and compact.

[0042] The upper ends of the two support arms 302 are connected to the left and right sides of the connecting seat 1013, and the lower ends of the two connecting arms are connected to the support seat 301. The support arms 302 support the entire fan head assembly 10 and the pitch mechanism 20. Under the transmission action of the pitch motor 21 driving the crank connecting rod assembly 201, the fan head assembly 10 can perform pitching movements on the two support arms 302. Moreover, each support arm 302 is provided with a second clearance part 3021 in the opposite direction of the airflow to the fan blade 40. The second clearance part 3021 is formed by the concave deformation of the support rod 1014 in the opposite direction of the airflow.

[0043] To prevent the fan head assembly 10 from being affected by the support arms 302 during pitching, a guide hole 1032 adapted to the two support arms 302 is provided on the rear fan cover 103. The guide hole 1032 extends along the pitching direction of the rear fan cover 103. By providing the guide hole 1032 on the rear fan cover 103, the influence of the support arms 302 on the rear fan cover 103 can be avoided, and the guiding action between the rear fan cover 103 and the support arms 302 can be achieved through the guide hole 1032 of the rear fan cover 103, thereby further improving the smoothness and stability of the pitching action of the fan head assembly 10.

[0044] Therefore, when the fan head assembly 10 and the pitch mechanism 20 perform pitching movements, the blower motor 41, the pitch motor 21, and the crank-connecting rod assembly 201 will not collide with the support arm 302, further ensuring the normal daily operation of the pitch-type circulating fan, and making the overall assembly structure of the fan head assembly 10 more coordinated and compact. Furthermore, the second clearance portion 3021 provided on the support arm 302, based on the structural force principle, can also improve the compressive strength and structural resistance of the support arm 302.

[0045] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A pitch-circulating fan that is easy to assemble and maintain, characterized in that, The device includes a fan head assembly, a pitch mechanism, and an oscillation bracket. The fan head assembly has a fan head frame, a front fan cover, and a rear fan cover. The fan head frame has an annular shell, a connecting seat, and a support rod. The connecting seat is located in the middle of the annular shell and is fixedly connected to the annular shell by several support rods. The front fan cover and the rear fan cover are respectively detachably arranged on the front and rear sides of the annular shell. The pitch mechanism is mounted on the connecting seat of the fan head frame and connected to the oscillating bracket. The pitch mechanism drives the fan head assembly to pitch and circulate air.

2. The pitch circulation fan as described in claim 1, characterized in that, The annular housing has a first housing and a second housing. The connecting seat is disposed in the middle of the first housing and is fixedly connected to the first housing by a plurality of the support rods and arranged between the front fan cover and the rear fan cover. The second housing is detachably disposed on the outer periphery of the first housing. The front cover is detachably disposed on the front side of the second housing, and the rear cover is detachably disposed on the rear side of the first housing.

3. The pitch circulation fan as described in claim 2, characterized in that, The front side of the second housing is provided with an annular groove, and a plurality of locking pins are provided along the groove wall direction. The edge of the front fan cover is provided with a slot, and is detachably mounted on the annular groove of the second housing through the snap-fit ​​connection of the slot and the locking pin.

4. The pitch circulation fan as described in claim 1, characterized in that, The fan head assembly has a rear cover, the edge of which is provided with fasteners, and the edge of the rear fan cover is provided with locking holes. The rear cover is detachably mounted on the rear fan cover by fastening the fasteners and locking holes, and covers the rear side of the annular housing.

5. The pitch circulation fan as described in any one of claims 1-4, characterized in that, The connecting seat is provided with fan blades and a blower motor for driving the fan blades to rotate. The support rod is provided with a first clearance portion on the air supply side, which is adapted to the rotation trajectory of the fan blades.

6. The pitch circulation fan as described in claim 5, characterized in that, The pitch mechanism has a crank-connecting rod assembly and a pitch motor. One end of the crank-connecting rod assembly is connected to the pitch motor, and the other end is connected to the yaw bracket.

7. The pitch circulation fan as described in claim 6, characterized in that, The oscillating bracket has a support base and two support arms disposed on the support base. The two support arms are connected to the left and right sides of the connecting base and arranged inside the crank-connecting rod assembly. The support arms have a second clearance portion that corresponds to the pitch trajectory of the pitch motor and the crank-connecting rod assembly.

8. The pitch circulation fan as described in claim 7, characterized in that, The rear cover has a guide hole adapted to the support arm, and the guide hole extends along the pitch direction of the rear cover.

9. The pitch circulation fan as described in claim 6, characterized in that, The blower motor and the pitch motor are fixedly mounted on the connecting seat via motor mounts.

10. The pitch circulation fan as described in claim 9, characterized in that, The blower motor and pitch motor are covered with motor covers.

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