Ultrasonic stator grounding structure

Abstract

The utility model is applicable to the technical field of ultrasonic motors, and provides an ultrasonic stator grounding structure, which comprises an FPC ground wire copper foil, a stator assembly, a fixing piece and a locking piece, the FPC ground wire copper foil and the stator assembly are sequentially placed on the fixing piece, the locking piece is detachably connected with the fixing piece, the locking piece simultaneously presses the FPC ground wire copper foil and the stator assembly to the fixing piece, and the locking piece is detachably connected with the fixing piece. Therefore, close contact conduction between the FPC ground wire copper foil and the stator assembly is realized. Through detachable connection between the fixing piece and the locking piece, the FPC ground wire copper foil and the stator assembly are arranged between the fixing piece and the locking piece, so that the FPC ground wire copper foil and the stator assembly are tightly attached and locked and can be directly contacted and conducted, the grounding effect is achieved, the structure is simple and reliable, the cost is saved, the fixing piece and the locking piece can be detached at any time, and the practicability is high. And subsequent inspection and maintenance operation is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic motors, and in particular relates to an ultrasonic stator grounding structure. Background Art

[0002] An ultrasonic motor, or ultrasonic motor for short, primarily consists of piezoelectric ceramic sheets, a stator, a rotor, and a clamping device. Existing ultrasonic motor grounding structures typically connect a common ground wire to the stator via welding or gluing. This is not only inconvenient to install but also prone to damage to the stator, increasing production costs. Furthermore, these methods permanently attach the common ground wire to the stator, hindering subsequent disassembly, inspection, and repair. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an ultrasonic stator grounding structure.

[0004] The utility model is implemented as follows: an ultrasonic stator grounding structure includes an FPC ground copper foil, a stator assembly, a fixing piece and a locking piece. The FPC ground copper foil and the stator assembly are placed on the fixing piece in sequence. The locking piece is detachably connected to the fixing piece. The locking piece presses the FPC ground copper foil and the stator assembly onto the fixing piece at the same time to achieve close contact and conduction between the FPC ground copper foil and the stator assembly.

[0005] Furthermore, the fixing member includes a first base plate, a raised first connecting column is provided on the first base plate, the first connecting column passes through the FPC ground copper foil and the stator assembly, a first thread is provided on the outer side of the first connecting column, the locking member is a center-through design, and a second thread that is compatible with the first thread is provided on the inner wall of the locking member.

[0006] Furthermore, a positioning block is provided on the locking member, and when the FPC ground wire copper foil and the stator assembly are connected between the fixing member and the locking member, the positioning block abuts against the stator assembly.

[0007] Furthermore, the fixing member includes a second base plate, the second base plate is provided with a raised second connecting column, the second connecting column passes through the FPC ground copper foil and the stator assembly, the second connecting column is provided with a plurality of fixing holes, the stator assembly is provided with connecting holes adapted to the fixing holes, the locking member is a screw, and the screw passes through the connecting hole in turn to connect with the fixing hole.

[0008] The utility model provides an ultrasonic stator grounding structure. Through a detachable connection between a fixing part and a locking part, an FPC ground wire copper foil and a stator assembly are arranged between the fixing part and the locking part. The FPC ground wire copper foil and the stator assembly are tightly locked and can be directly contacted and conductive, thereby achieving a grounding effect. The structure is simple and reliable, and cost-saving. The fixing part and the locking part can be disassembled at any time, which is convenient for subsequent inspection and maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0011] Figure 1 It is a structural diagram of an embodiment provided by the utility model.

[0012] Figure 2 It is a structural schematic diagram of another embodiment provided by the utility model.

[0013] Explanation of the accompanying reference numerals: 1. FPC ground wire copper foil; 11. Through hole; 12. Small hole; 2. Stator assembly; 21. Connecting hole; 3. Fixing piece; 31. First base plate; 32. First connecting column; 33. Second base plate; 34. Second connecting column; 35. Fixing hole; 4. Locking piece; 41. Positioning block. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] See also Figure 1-Figure 2The utility model discloses an ultrasonic stator grounding structure, comprising an FPC ground copper foil 1, a stator assembly 2, a fixing member 3, and a locking member 4. The FPC ground copper foil 1 and the stator assembly 2 are sequentially placed on the fixing member 3, and the locking member 4 is detachably connected to the fixing member 3. The locking member 4 simultaneously presses the FPC ground copper foil 1 and the stator assembly 2 onto the fixing member 3 to achieve close contact and conduction between the FPC ground copper foil 1 and the stator assembly 2, thereby achieving a grounding effect. The FPC ground copper foil 1 is used to replace the existing ordinary ground wire. As long as the FPC ground copper foil 1 and the stator assembly 2 are in contact, they can be conductive. There is no need to use welding or other methods to fix and conduct them again. This is convenient and quick, and also reduces the subsequent conduction-related welding process, saving costs. At the same time, through the detachable connection between the fixing member 3 and the locking member 4, the FPC ground copper foil 1 and the stator assembly 2 are positioned between the fixing member 3 and the locking member 4, smoothly achieving a tight lock and contact between the FPC ground copper foil 1 and the stator assembly 2, and achieving a grounding effect. Simply removing the fixing member 3 and the locking member 4 can separate the FPC ground copper foil 1 and the stator assembly 2, facilitating subsequent inspection and maintenance operations, and also facilitating replacement of any of the FPC ground copper foil 1, the stator assembly 2, the fixing member 3, and the locking member 4, thereby reducing production costs.

[0016] As one embodiment of this solution, the fixing member 3 may include a first base plate 31 having a raised first connecting post 32 thereon. The FPC ground copper foil 1 and the stator assembly 2 are both provided with through-holes 11 that mate with the first connecting post 32. The first connecting post 32 passes through the FPC ground copper foil 1 and the stator assembly 2 in sequence through the through-holes 11. A first thread is provided on the outer side of the first connecting post 32. The locking member 4 is a centrally-through design. A second thread is provided on the inner wall of the locking member 4 that mates with the first thread. The locking member 4 passes through the stator assembly 2 and the FPC ground copper foil 1 in sequence in the opposite direction through the through-holes 11 and is connected to the first connecting post 32. The first and second threads cooperate to form a threaded connection between the first connecting post 32 and the locking member 4. Furthermore, the threaded connection between the first connecting post 32 and the locking member 4 prevents positional offset between the FPC ground copper foil 1 and the stator assembly 2. Furthermore, to prevent the stator assembly 2 and the FPC ground copper foil 1 from protruding from the locking member 4, a positioning block 41 is provided on the locking member 4. When the FPC ground copper foil 1 and the stator assembly 2 are connected between the fixing member 3 and the locking member 4, the positioning block 41 abuts against the stator assembly 2. The fixing member 3 is detachably connected to the locking member 4 via the first connecting column 32. By rotating the locking member 4 to shorten the distance between the locking member 4 and the first base plate 31, the FPC ground copper foil 1 and the stator assembly 2 are simultaneously pressed against the first base plate 31, ensuring a tight fit between the FPC ground copper foil 1 and the stator assembly 2, thereby achieving a smooth grounding effect. On the contrary, by rotating the locking member 4 in the opposite direction, gradually increasing the distance between the locking member 4 and the first base plate 31 until the locking member 4 and the first connecting column 32 are separated, the fixing member 3 and the locking member 4 can be disassembled, and the FPC ground copper foil 1 and the stator assembly 2 can be separated.

[0017] As another embodiment of the present scheme, the fixing member 3 may include a second base plate 33, the second base plate 33 is provided with a raised second connecting column 34, the FPC ground copper foil 1 and the stator assembly 2 are simultaneously provided with a through hole 11 adapted to the first connecting column 32, the second connecting column 34 passes through the FPC ground copper foil 1 and the stator assembly 2 in sequence through the through hole 11, the second connecting column 34 is provided with a plurality of fixing holes 35, the stator assembly 2 is provided with a plurality of connecting holes 21 adapted to the plurality of fixing holes 35, the locking member 4 is a plurality of screws, each of the screws passes through one of the connecting holes 21 in sequence and is threadedly connected to one of the fixing holes 35 at the corresponding position, thereby achieving a tight fit between the FPC ground copper foil 1 and the stator assembly 2. Preferably, the through hole 11 in the FPC ground copper foil 1 is further extended with a small hole 12 adapted to the fixing hole 35 and the connecting hole 21 at the corresponding position. Each of the screws passes through one of the connecting holes 21 and one of the small holes 12 and the fixing hole 35 at the corresponding position in sequence. When the screw passes through one of the small holes 12, the position displacement of the FPC ground copper foil 1 can be avoided, thereby ensuring that the FPC ground copper foil 1 and the stator assembly 2 are positioned and matched to smoothly achieve the grounding effect.

[0018] The above are only two preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrasonic stator grounding structure, characterized in that: The invention comprises an FPC ground copper foil (1), a stator assembly (2), a fixing piece (3) and a locking piece (4), wherein the FPC ground copper foil (1) and the stator assembly (2) are placed on the fixing piece (3) in sequence, the locking piece (4) is detachably connected to the fixing piece (3), and the locking piece (4) presses the FPC ground copper foil (1) and the stator assembly (2) onto the fixing piece (3) at the same time, so as to achieve close contact and conduction between the FPC ground copper foil (1) and the stator assembly (2).

2. The ultrasonic stator grounding structure according to claim 1, characterized in that: The fixing member (3) comprises a first base plate (31), the first base plate (31) is provided with a protruding first connecting column (32), the first connecting column (32) passes through the FPC ground wire copper foil (1) and the stator assembly (2), the outer side of the first connecting column (32) is provided with a first thread, the locking member (4) is of a through-hole design, and the inner wall of the locking member (4) is provided with a second thread matched with the first thread.

3. The ultrasonic stator grounding structure according to claim 2, characterized in that: The locking member (4) is provided with a positioning block (41), and when the FPC ground wire copper foil (1) and the stator assembly (2) are connected between the fixing member (3) and the locking member (4), the positioning block (41) abuts against the stator assembly (2).

4. The ultrasonic stator grounding structure according to claim 1, characterized in that: The fixing member (3) comprises a second base plate (33), the second base plate (33) is provided with a protruding second connecting column (34), the second connecting column (34) passes through the FPC ground wire copper foil (1) and the stator assembly (2), the second connecting column (34) is provided with a plurality of fixing holes (35), the stator assembly (2) is provided with a connecting hole (21) adapted to the fixing hole (35), and the locking member (4) is a screw, which passes through the connecting hole (21) in turn and is connected to the fixing hole (35).

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