TWM628721U - Fan head pitch adjustment device of wall fan - Google Patents

Abstract

A fan head pitch adjustment device of a wall fan is mainly tied between the motor casing of the fan head from the side of the pivoted support rod to the top surface of the motor casing, and at the position corresponding to the support rod, is provided with a concave inside of the motor casing. Rod avoidance groove, by the setting of the rod avoidance groove, when the fan head is tilted and adjusted, the top of the support rod can be avoided by the rod avoidance groove, so that the angle of the fan head can be larger when the fan head is tilted. The pivot mechanism for adjusting the angle of the fan head is connected to the mutually pivoted support rod and the motor casing, one of which is fixed with a positioning plate, and the plate surface of the positioning plate is provided with a pivot between the support rod and the motor casing A plurality of positioning holes with the same center, the same radius and an arc-shaped arrangement are made for the contact points; the other is that there is an elastic bead fixed to the end of the positioning plate, and the setting position of the elastic bead is also made concentric and the same as the positioning hole. The radius is matched, so that after the fan head adjusts the pitch angle, the elastic bead will snap into the corresponding positioning hole to fix the fan head angle.

Description

Fan head pitch adjustment device for wall fan

This creation relates to a fan head pitch adjustment device for a wall fan, especially a fan head pitch adjustment device for a wall fan that can increase the pitch angle adjustment of the fan head.

According to the conventional structure of the wall fan, a base is mainly fixed on the wall, and the base is connected with a support rod and is pivotally connected with a fan head by a pivot mechanism, whereby the fan head can be pivoted by the pivot mechanism. And for the fan head to adjust the pitch angle. When the fan head adjusts the pitch angle downward, the bottom end of the fan head often touches the support rod because the fan head is adjusted to an angle, so that the adjustment of the pitch angle is limited and needs to be improved.

In view of the above-mentioned deficiencies in the application of conventional wall fans, the creator of the creator made design improvements, and this creation came into being.

The main purpose of this creation is to provide a fan head pitch adjustment device for a wall fan that can increase the fan head adjustment angle.

The main feature of this creation is that the motor housing of the fan head is provided between the side of the pivoted support rod and the top surface of the motor housing and at the position corresponding to the support rod, there is a rod avoidance groove recessed into the interior of the motor housing. The setting of the rod avoidance groove enables the fan head to avoid the top of the support rod by the rod avoidance groove when the fan head is adjusted in pitch, so that the angle of the fan head can be larger when the fan head is tilted.

Another feature of this creation is that the pivot mechanism for adjusting the angle of the fan head is tied to the mutually pivoted support rod and the motor housing, one of which is fixed with a positioning plate, and the plate surface of the positioning plate is provided with There are plural sets of concentric circles, the same radius and an arc-shaped arrangement with the pivot point between the support rod and the motor housing as the center. Positioning hole; the other is to fix an elastic bead corresponding to the end of the positioning plate, and the setting position of the elastic bead is also matched with the positioning hole with the same center and radius, so that after the fan head adjusts the pitch angle, the elastic bead will snap into the In the corresponding positioning hole, fix the angle of the fan head.

Regarding the technical means and structures adopted by the present invention to achieve the above-mentioned purposes and effects, the following examples are given and described in conjunction with the drawings as follows.

1: Wall fan

10: Pedestal

11: Support rod

12: Fan head

2: Pivot mechanism

120: Motor housing

120a: inner shell

120b: Shell

121: Fan net

1200: Corresponding to the support rod side

1201: Top Surface

1202: Rod Avoidance Slot

1203: End Wall

1204: Barrier

20: Positioning plate

21: Elastic Beads

200: First Pivot

110: Second pivot

A: Pivot point

201: Positioning hole

210: Spring

211: Card Beads

FIG. 1 is a perspective view of a structural assembly of an embodiment of the present invention.

FIG. 2 is an exploded view of the structure of the embodiment of the present invention.

Fig. 2-1 is another perspective view of the casing of the present invention.

FIG. 2-2 is another perspective view of the inner shell of the inventive embodiment.

FIG. 3 is an exploded view of another angular structure of the embodiment of the present invention.

FIG. 4 is a combined side view of a partial cross-section of an embodiment of the present invention.

FIG. 5 is a cross-sectional view of section 5-5 of FIG. 4 .

FIG. 6 is a partial cross-sectional side view of the angle adjustment state 1 of the fan head according to the embodiment of the present invention.

FIG. 6A is an enlarged view of the combination of the positioning plate and the elastic bead of the fan head in the state of FIG. 6 .

FIG. 7 is a partial cross-sectional side view of the angle adjustment state 2 of the fan head according to the embodiment of the present invention.

FIG. 7A is an enlarged view of the combination of the positioning plate and the elastic bead of the fan head in the state of FIG. 7 .

FIG. 8 is a partial cross-sectional side view of the angle adjustment state 3 of the fan head according to the embodiment of the present invention.

FIG. 8A is an enlarged view of the combination of the positioning plate and the elastic bead of the fan head in the state of FIG. 8 .

Please refer to FIGS. 1-3 , the wall fan 1 of the present creative embodiment is mainly composed of a base 10 , a support rod 11 and a fan head 12 . The base 10 is used to be fixed with the wall; one end of the support rod 11 is fixedly connected to the base 10, and the other end is pivotally connected to the fan head 12 by a pivot mechanism 2; The motor casing 120 (the motor casing 120 in this embodiment is composed of the inner casing 120a and the outer casing 120b, the outer casing is connected and fixed to each other, and has a built-in conventional driving element such as a motor), a fan net 121 and a fan net 121. fan blades, etc.

Please refer to FIGS. 1 to 4 , the motor housing 120 is provided between the side 1200 of the corresponding support rod and the top surface 1201 of the motor housing 120 , and at the position corresponding to the support rod 11 , is provided with a concave to the inside of the motor housing 120 and The rod avoidance grooves 1202 communicate with each other. The inner diameter of the rod avoidance groove 1202 enables the fan head 12 to avoid the end of the support rod 11 through the rod avoidance groove 1202 when the fan head 12 is tilted. Moreover, the rod avoidance groove 1202 is located on the end wall 1203 of the top surface 1201 of the motor casing 120 and the end wall of a blocking bar 1204 extending into the rod avoidance groove 1202 from the front cover of the motor casing 120 (as shown in FIGS. 2 and 3 ). , 4), the two end walls are used as a stop function for the adjustment limit of the pitch angle of the fan head 12 .

2, 3, 5, 6A, 7A, 8A, the pivot mechanism 2 is connected to the support rod 11 and the motor housing 120 that are pivotally connected to each other, one of which is fixed with a positioning plate 20, and the other An elastic bead 21 on the adjacent side of the positioning plate 20 is fixed. The present inventive embodiment takes the positioning plate 20 fixedly connected to the side surface of the end of the support rod 11 , and the elastic ball 21 fixedly connected to the opposite wall surface of the rod avoidance groove 1202 of the motor housing 120 as an example. The positioning plate 20 is arranged vertically and fixed on the side of the end of the support rod 11 in a locking manner. The positioning plate 20 is provided with a first pivot shaft 200 extending horizontally. The first pivot shaft 200 is connected to the support rod. The second pivot shafts 110 protruding outward from the other opposite side of the end of the 11 are arranged on the same axis, so that the support rod 11 penetrates the inner wall of the rod avoidance slot 1202 by the first and second pivot shafts 200 and 110 to make the support rod 11 is pivotally connected to the motor housing 120, and the pivotal position is a pivot point A (as shown in Figs. 5, 6A, 7A, and 8A). The plate surface of the positioning plate 20 is provided with concentric circles with the pivot point A as the center, Plural positioning holes 201 with the same radius and arranged in an arc. The elastic bead 21 includes a spring 210 and a locking bead 211. The installation position of the elastic bead 21 is also matched with the positioning hole 201, with the pivot point A as the center of the circle and is matched with the positioning hole 201 concentrically and with the same radius. 210 has the force to push the bead 211 into one of the positioning holes 201 .

In application, when the pitch angle of the fan head 12 is adjusted, the fan head 12 can be driven by the hand holding the fan head 12 to adjust the pitch angle of the fan head 12 with the first and second pivots 200 and 110 as the axes. The rod slot 1202 can avoid the support rod 11 . The pitch angle adjustment of the fan head 12 can be made larger. During adjustment, the elastic beads 21 will be displaced together with the fan head 12. After the pitch angle of the fan head 12 is fixed, the elastic beads 21 will be snapped into the corresponding positioning holes 201 for positioning, and the pitch angle of the fan head 12 will be fixed, as shown in Figure 6 , 6A, 7, 7A, 8, 8A.

When the pitch angle of the fan head 12 is adjusted to the limit at both ends (as shown in FIGS. 6 and 8 ), the two opposite end walls 1203 and the ends of the blocking bars 1204 of the rod avoidance slot 1202 will touch the support rod 11 respectively, so that the fan The head 12 cannot continue to adjust the angle and stops. Therefore, the two opposite end walls 1203 of the rod avoidance groove 1202 and the end walls of the blocking bars 1204 are used as limit stops for the pitch angle adjustment of the fan head 12 .

It can be seen from the above description that in this invention, through the bottom surface and the rear end of the motor casing and at the position corresponding to the support rod, there is a rod avoidance groove concave inside the motor casing, and the fan head can be adjusted by the setting of the rod avoidance groove When the fan head is tilted, the top of the support rod can be avoided by the rod avoidance groove, so that the angle of the fan head can be larger when the pitch is adjusted. In addition, the pivot mechanism cooperating with the rod escape groove is also not seen in the conventional combination with such a structure, and the structure is novel.

To sum up, this creation is not only novel but also industrially applicable. I have filed an application for a new type of patent in accordance with the law, and I sincerely ask for approval.

1: Wall fan

10: Pedestal

11: Support rod

12: Fan head

120: Motor housing

121: Fan net

1200: Corresponding to the support rod side

1201: Top Surface

1202: Rod Avoidance Slot

1203: End Wall

Claims (4)

A fan head pitch adjustment device of a wall fan, the wall fan is composed of a base, a support rod and a fan head; wherein the base is used to be fixed with the wall, and one end of the support rod is fixed to the base , the other end is pivoted with a pivot mechanism between the fan head; the fan head includes a motor housing with a built-in motor, a fan net and a fan blade positioned in the fan net; it is characterized in that: Between the side corresponding to the support rod and the top surface of the motor case, and at the position corresponding to the support rod, the motor casing is provided with a rod escape groove that is concave inside the motor case, and the inner diameter of the rod escape groove is The fan head can be adjusted by avoiding the end of the support rod through the rod avoidance groove when the pitch adjustment is performed; two corresponding ends of the rod avoidance groove are respectively provided with one end wall, and the two end walls are used as the end wall. It is used to stop the fan head pitch angle adjustment limit. The fan head pitch adjustment device for a wall fan as claimed in claim 1, wherein of the two corresponding end walls of the rod avoidance slot, one end wall is located on the top surface of the motor housing, and the other end wall It is formed by a blocking bar end wall which is extended into the rod avoiding groove by the front cover of the motor casing. The fan head pitch adjustment device for a wall fan as claimed in claim 1 or 2, wherein the pivot mechanism is fixed to one of the support rod and the motor housing that are pivotally connected to each other with a positioning plate, and the other An elastic ball is fixed on the adjacent side of the positioning plate; the positioning plate is provided with a first pivot shaft extending horizontally, the first pivot shaft and another second pivot shaft are arranged on the same axis, and the support rod is connected to the The motor shell is pivotally connected, and the pivotal position is a pivot point; the plate surface of the positioning plate is provided with a plurality of positioning holes that are concentric, have the same radius and are arranged in an arc with the pivot point as the center; the elastic bead It includes a spring and a bead, the elastic bead is arranged in a matching position with the positioning hole, takes the pivot point as the center of the circle and is matched with the positioning hole with the same center and radius. The spring has the function of pushing the bead into The force of the positioning hole corresponding to one of them. The fan head pitch adjustment device for a wall fan according to claim 3, wherein the positioning plate is fixedly connected to the side surface of the end of the support rod; the elastic ball is fixedly connected to the opposite wall surface of the rod avoiding groove.

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