Air blower with locking device

Abstract

The utility model discloses an air blower with a locking device, which comprises a shell, a stator component and a rotor component, the stator component and the rotor component are arranged in the shell, a connecting lug is arranged on the shell, a threaded connecting piece is matched with the connecting lug, the threaded connecting piece is hollow, and the locking device is matched in a hollow cavity of the threaded connecting piece. The locking device comprises a supporting and tightening piece and a pulling piece, the supporting and tightening piece comprises a supporting and tightening piece body matched in the hollow cavity and a supporting and tightening head located at one end of the supporting and tightening piece body, and the supporting and tightening head is exposed out of the tail end of the threaded connecting piece; and the pulling piece is in threaded connection with the tightening piece, and the pulling piece is pivoted to the head end of the threaded connecting piece. According to the utility model, the locking device matched with the threaded connecting piece is adopted, so that the stability of the air blower on electrical equipment is improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic and electrical products, in particular to a radiator. Background Art

[0002] The cooling fan mainly includes a housing, a stator assembly assembled in the housing, and a rotor assembly (fan wheel). The cooling fan achieves electrical conduction between the cooling fan and the circuit board inside the electronic device through a wire harness with a connector fixed at one end, and the cooling fan is generally fixed to the circuit board inside the electronic device by screws. For small electronic devices, ordinary screws are used to lock the cooling fan, which is stable and convenient. However, for larger electrical equipment, such as industrial control equipment, automobiles, household appliances, and medical equipment, there is a risk of loosening when ordinary screws are used to lock the cooling fan. Utility Model Content

[0003] The technical problem solved by the utility model is to improve the stability of locking a cooling fan on an electrical device.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a blower provided with a locking device, comprising a shell, a stator assembly and a rotor assembly arranged in the shell, the shell is provided with a connecting ear, the connecting ear is equipped with a threaded connector, the threaded connector is hollow, and the hollow cavity of the threaded connector is equipped with a locking device, the locking device comprises a tightening member and a pulling member, the tightening member comprises a tightening member body fitted in the hollow cavity, a tightening head located at one end of the tightening member body, the tightening head is exposed at the tail end of the threaded connector; the pulling member is threadedly connected to the tightening member, and the pulling member is pivotally connected to the head end of the threaded connector.

[0005] According to the above technical solution, when the blower (cooling fan) is installed on the electrical equipment, the threaded connector passes through the connecting ear and is screwed with the threaded hole on the electrical equipment. After that, the pulling member is rotated, and the pulling member drives the tensioning member to move axially toward the pulling member, that is, the tensioning member moves toward the head end of the threaded connector, and the truncated cone-shaped tensioning head portion enters the hollow cavity at the tail end of the threaded connector, so that the tail end of the threaded connector has a tendency to open, so that the tail end of the threaded connector is tightened in the threaded hole of the electrical equipment.

[0006] The utility model adopts a locking device matched with a threaded connector to improve the stability of the blower on the electrical equipment.

[0007] The tail end of the threaded connector is provided with an axial strip groove, which is connected to the hollow cavity. A plurality of axial strip grooves are distributed along the circumference of the threaded connector. The provision of the axial strip grooves facilitates the truncated cone-shaped tightening head to partially enter the hollow cavity of the threaded connector, so that the tail end of the threaded connector is stretched open.

[0008] The tensioning head is provided with a locking piece, which extends axially toward the tensioning member body and cooperates with the axial strip groove. In this way, when the operator rotates the pulling member, the tensioning head will not rotate with it, but will move axially.

[0009] A countersunk hole is arranged at the center of the head end of the threaded connector, a pivot hole communicating with the hollow cavity is arranged at the bottom of the countersunk hole, the body of the pulling member is fitted in the pivot hole, and the head end of the pulling member is fitted in the countersunk hole.

[0010] A small cross groove is provided at the head end of the pulling piece, and a large cross groove is provided at the head end of the threaded connector, and the large cross groove and the small cross groove are arranged correspondingly. When the operator screws the threaded connector, the cross screwdriver or the flat-blade screwdriver fits in the large cross groove while also fitting in the small cross groove, and the threaded connector rotates as a whole, and the pulling piece does not rotate relative to the threaded connector. After the threaded connector is tightened in the threaded hole of the electrical equipment, the operator uses a small cross screwdriver or a flat-blade screwdriver to fit in the small cross groove instead of the large cross groove. The operator rotates the pulling piece, and the pulling piece pulls the tensioning piece to move, and the truncated cone-shaped tensioning head part enters the hollow cavity at the rear end of the threaded connector, so that the rear end of the threaded connector is stretched open, and the rear end of the threaded connector is tightened in the threaded hole of the electrical equipment.

[0011] The housing includes a housing body and a cover plate. The edges of the housing body and the cover plate are provided with a plurality of pairs of connection ears, and the housing body and the cover plate are provided with corresponding pre-tightening holes. Pre-tightening screws are first installed in the pre-tightening holes to preliminarily connect the housing body and the cover plate together. When the blower is installed on the electrical equipment, the threaded connector connects the housing body and the cover plate through the connection ears, and at the same time, the blower is installed on the electrical equipment.

[0012] The housing includes a stator assembly positioning plate, which is connected to the housing body through a plurality of spokes, a wire hole is provided on the stator assembly positioning plate, the wire hole is communicated with the wire groove, and a decorative cover is covered on the stator assembly positioning plate. An axle tube for positioning the stator assembly is provided on the stator assembly positioning plate, and the rotating shaft of the rotor assembly is fitted in the axle tube. The stator assembly and the rotor assembly are electromagnetically coupled to drive the rotor assembly to rotate relative to the stator assembly, and the wire of the stator assembly is led out through the wire hole and then led out through the wire groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings:

[0014] Figure 1 is a schematic diagram of a blower provided with a locking device;

[0015] Figure 2 A schematic diagram of a blower provided with a locking device from another perspective;

[0016] Figure 3 is a schematic diagram of a threaded connector 20;

[0017] Figure 4 for Figure 3 A cross-sectional view of

[0018] Figure 5 for Figure 3 Exploded diagram.

[0019] Explanation of symbols in the figure:

[0020] 10. Shell; 11. Connecting ear; 12. Shell body; 13. Cover plate; 14. Pre-tightening hole; 15. Stator assembly positioning plate; 16. Spoke; 17. Wire groove; 18. Decorative cover; 19. Air outlet;

[0021] 20. Threaded connector; 21. Axial strip groove; 22. Countersunk hole; 23. Pivot hole; 24. Hollow cavity; 25. Large cross groove;

[0022] 31. tightening member; 311. tightening member body; 312. tightening head; 313. locking plate; 32. pulling member; 321. small cross groove. DETAILED DESCRIPTION

[0023] like Figure 1 , Figures 3 to 5 A blower with a locking device comprises a shell 10, a stator assembly and a rotor assembly arranged in the shell, a connecting ear 11 is provided on the shell, and the connecting ear is equipped with a threaded connector 20, the threaded connector is hollow, and a locking device is matched in the hollow cavity of the threaded connector, the locking device comprises a tightening member 31 and a pulling member 32, the tightening member comprises a tightening member body 311 matched in the hollow cavity, and a tightening head 312 located at one end of the tightening member body, and the tightening head is exposed at the tail end of the threaded connector; the pulling member is threadedly connected to the tightening member, and the pulling member is pivotally connected to the head end of the threaded connector.

[0024] When the blower is installed on the electrical equipment, the threaded connector 20 passes through the connecting ear 11 and is screwed to the threaded hole on the electrical equipment. After that, the pulling member 32 is rotated, and the pulling member drives the tensioning member 31 to axially approach the pulling member 32, that is, the tensioning member 31 approaches the head end of the threaded connector 20, and the truncated cone-shaped tensioning head 312 partially enters the hollow cavity 24 at the tail end of the threaded connector 20, so that the tail end of the threaded connector has a tendency to open, so that the tail end of the threaded connector 20 is tightened in the threaded hole of the electrical equipment.

[0025] like Figures 3 to 5The tail end of the threaded connector 20 is provided with an axial strip groove 21, which is connected to the hollow cavity. A plurality of axial strip grooves are distributed along the circumference of the threaded connector 20. The provision of the axial strip grooves 21 facilitates the truncated cone-shaped tightening head 312 to partially enter the hollow cavity 24 of the threaded connector, so that the tail end of the threaded connector is stretched open.

[0026] The tightening head 312 is provided with a locking piece 313, which extends axially toward the tightening member body 311 and cooperates with the axial strip groove 21. Thus, when the operator rotates the pulling member 32, the tightening head 312 does not rotate with it, but moves axially.

[0027] A countersunk hole 22 is provided at the center of the head end of the threaded connector 20, and a pivot hole 23 communicating with the hollow cavity is provided at the bottom of the countersunk hole. The body of the pulling member 32 is fitted in the pivot hole, and the head end of the pulling member is fitted in the countersunk hole.

[0028] like Figure 3 , a small cross groove 321 is provided at the head end of the pulling member 32, and a large cross groove 25 is provided at the head end of the threaded connector 20, and the large cross groove and the small cross groove are arranged correspondingly. When the operator screws the threaded connector 20, the cross screwdriver or the flat-blade screwdriver fits in the large cross groove 25 and the small cross groove 321 at the same time, the threaded connector 20 rotates as a whole, and the pulling member 32 does not rotate relative to the threaded connector. After the threaded connector is tightened in the threaded hole of the electrical equipment, the operator uses a small cross screwdriver or a flat-blade screwdriver to fit in the small cross groove 321 instead of the large cross groove. The operator rotates the pulling member 32, and the pulling member pulls the tightening member 31 to move, and the truncated cone-shaped tightening head 312 partially enters the hollow cavity 24 at the tail end of the threaded connector, so that the tail end of the threaded connector is stretched open, and the tail end of the threaded connector 20 is tightened in the threaded hole of the electrical equipment.

[0029] Combination Figure 1 , Figure 2 The housing 10 includes a housing body 12 and a cover plate 13. The edges of the housing body and the cover plate are provided with a plurality of pairs of connecting ears 11, and the housing body and the cover plate are provided with corresponding pre-tightening holes 14. Pre-tightening screws are first installed in the pre-tightening holes to preliminarily connect the housing body 12 and the cover plate 13. When the blower is installed on the electrical equipment, the threaded connector 20 connects the housing body and the cover plate through the connecting ears 11, and at the same time, the blower is installed on the electrical equipment.

[0030] The housing 10 includes a stator assembly positioning plate 15, which is connected to the housing body 12 through a plurality of spokes 16. The stator assembly positioning plate is provided with a wire hole, which is communicated with a wire groove 17, and a decorative cover 18 is covered on the stator assembly positioning plate. The stator assembly positioning plate 15 is provided with an axle tube for positioning the stator assembly, and the rotating shaft of the rotor assembly is fitted in the axle tube. The stator assembly and the rotor assembly are electromagnetically coupled to drive the rotor assembly to rotate relative to the stator assembly, and the wire of the stator assembly is led out through the wire hole and then led out through the wire groove 17.

[0031] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A blower provided with a locking device, comprising a housing (10), a stator assembly and a rotor assembly arranged in the housing, the housing being provided with a connecting ear (11), the connecting ear being equipped with a threaded connector (20), characterized in that: The threaded connector is hollow, and a locking device is provided in the hollow cavity of the threaded connector. The locking device includes a tightening member (31) and a pulling member (32). The tightening member includes a tightening member body (311) fitted in the hollow cavity, and a tightening head (312) located at one end of the tightening member body, and the tightening head is exposed at the tail end of the threaded connector; the pulling member is threadedly connected to the tightening member, and the pulling member is pivotally connected to the head end of the threaded connector.

2. The blower with a locking device according to claim 1, characterized in that: An axial strip groove (21) is provided at the rear end of the threaded connector (20), and the axial strip groove is connected to the hollow cavity.

3. The blower with a locking device according to claim 2, characterized in that: A locking plate (313) is provided on the tightening head (312), and the locking plate extends axially toward the tightening member body (311), and the locking plate cooperates with the axial strip groove (21).

4. The blower with a locking device according to claim 1, characterized in that: A countersunk hole (22) is provided at the center of the head end of the threaded connector (20), and a pivot hole (23) communicating with the hollow cavity is provided at the bottom of the countersunk hole. The body of the pulling member (32) is fitted in the pivot hole, and the head end of the pulling member is fitted in the countersunk hole.

5. The blower with a locking device according to claim 4, characterized in that: A small cross groove (321) is formed at the head end of the pulling member (32), and a large cross groove (25) is formed at the head end of the threaded connection member (20), and the large cross groove and the small cross groove are arranged correspondingly.

6. The blower with a locking device according to claim 1, characterized in that: The shell (10) comprises a shell body (12) and a cover plate (13); the edges of the shell body and the cover plate are correspondingly provided with a plurality of pairs of connection ears (11); and the shell body and the cover plate are provided with corresponding pre-tightening holes (14).

7. The blower with a locking device according to claim 1, characterized in that: The housing (10) comprises a stator assembly positioning plate (15), which is connected to the housing body (12) via a plurality of spokes (16), a wire hole is provided on the stator assembly positioning plate, the wire hole is communicated with a wire groove (17), and a decorative cover (18) is covered on the stator assembly positioning plate.

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