Vibration motor with through holes in the rotor

Abstract

The present invention relates to a vibration motor having a through hole formed in a rotor, in which a rotor connected to a motor housing by penetrating the vibration part simultaneously serves to receive a cleaning solvent and to transmit vibration, thereby eliminating the need for a separate supply pipe, contributing to cost reduction and improved productivity, and simplifying the internal structure to improve performance. In addition, a nozzle is detachably fixed to the tip of the rotor, allowing various nozzles to be selectively replaced depending on the object to be cleaned, and various cleaning solvents such as water, oil, powder, and air can be supplied to the through hole of the rotor to efficiently clean the object.

Description

[Technical field]

[0001] The present invention relates to a vibration motor, and more particularly, to a vibration motor having a through hole in a rotor, which is connected to a motor housing and a vibration part by penetrating the rotor and serves to receive a cleaning solvent and to transmit vibration at the same time, thereby eliminating the need for a separate supply pipe, contributing to cost reduction and improved productivity, and simplifying the internal structure to improve performance. In addition, a nozzle is detachably fixed to the tip of the rotor, allowing various nozzles to be selectively replaced and used depending on the object to be cleaned, and various cleaning solvents such as water, oil, powder, and air can be supplied to the through hole in the rotor to efficiently clean the object. [Background technology]

[0002] 2. Description of the Related Art Generally, vibration motors that generate vibrations are used in a variety of fields, such as various health products, medical devices, and cleaning products.

[0003] This type of vibration motor works by converting electrical energy into mechanical energy called torque through the electromagnetic field in the gap between the stator and rotor, based on Fleming's left-hand rule, which states that a conductor carrying current will be subjected to a force if it is placed in a magnetic field.

[0004] As a prior art utilizing the above-mentioned vibration motor, a vibration device for a bidet nozzle was registered under Korean Utility Model No. 20-0422546.

[0005] However, in the above-mentioned prior registered device, a vibration unit is built into a nozzle in which a flow path is formed, and the vibration member rotates in response to a bidet button signal to vibrate the nozzle and spray cleansing water, which has the advantage of widening the cleaning area and making it easier to clean. However, since the vibration unit is attached integrally to the inside of the nozzle, the vibration amplitude of the nozzle is small, reducing the cleaning power. In addition, the vibration member that causes vibration in the nozzle is attached perpendicular to the nozzle tube or perpendicular to it, which means there is a limit to giving a lively action to the water stream sprayed through the cleaning hole.

[0006] In addition, since the vibration part that generates the vibration and the fluid supply pipe into which the water flows are formed separately, the structure is complex, and the purpose is not suited to the shape or material of the object to be cleaned, and cleaning is done with a single installed nozzle, which creates problems in that it does not satisfy users. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Korean Registered Utility Model No. 20-0422546 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above-mentioned problems of the prior art, and its object is to provide a vibration motor having a rotor with a through hole formed therein, in which the rotor, which is connected to the motor housing by penetrating the vibration part, serves to receive the cleaning solvent and to transmit the vibration at the same time, eliminating the need for a separate supply pipe, thereby contributing to cost reduction and improved productivity, and simplifying the internal structure to improve performance.

[0009] Another object of the present invention is to provide a vibration motor having a through hole formed in the rotor, which allows a nozzle to be detachably fixed to the tip of the rotor, so that various nozzles can be selectively replaced and used depending on the object to be cleaned.

[0010] Another object of the present invention is to provide a vibration motor having a rotor with through holes formed therein, which can efficiently clean an object by supplying various cleaning solvents such as water, oil, powder, and air to the through holes of the rotor. [Means for solving the problem]

[0011] The vibration motor having a rotor with a through hole of the present invention is characterized in that it includes a motor housing, a vibration unit connected to both sides inside the motor housing and rotating the rotor forward and backward to impart vibration, a rotor having a certain length with a through hole formed inside and connected to the center of the motor housing, a nozzle removably connected to the front of the rotor, a connecting part for fixing the rotor to the nozzle, a bearing connected to the rotor inside the motor housing and guiding the rotation of the rotor, and a front cover and a rear cover connected to the front and rear of the motor housing.

[0012] The motor housing includes a main body, a mounting hole formed in an inner center of the main body to which a rotor is inserted and coupled, coupling spaces formed on both sides of the main body around the mounting hole to which a vibrating part is coupled, and coupling holes provided at upper and lower parts of a rear end of the main body to which a rear cover is coupled.

[0013] The vibrating part includes a stator mounted on each side of the inside of the main body of the motor housing, an insulator for fixing the stator inside the motor housing, a coil wound around the stator, and a magnet mounted on both side surfaces of the rotor.

[0014] The stator and the insulator are integrally formed by insert injection.

[0015] The rotor includes a shaft having the specified length, a through hole formed therein, a tip connected to a nozzle, a central portion located inside the motor housing, and a rear end exposed to the outside of the motor housing, mounting grooves provided on both sides of the central portion of the shaft to mount magnets, an insertion hole provided at the tip of the shaft to be connected to a nozzle, and a fixing groove provided behind the insertion hole and formed on the outer circumferential surface of the shaft to be connected to the nozzle.

[0016] The nozzle includes a coupling body coupled to accommodate the rotor, a nozzle tip formed at a tip of the coupling body, elastic pieces having elasticity on upper and lower parts of the coupling body, a fixing protrusion formed on the inside of the tip of the elastic piece for fixing the coupling body to the rotor, and an insertion protrusion formed on the inner part at the boundary between the coupling body and the nozzle tip and coupled to the tip of the rotor, and further includes a stopper protruding from the tip of the elastic piece.

[0017] The connecting part includes a connecting ring that is connected to the connecting body of the nozzle and presses the elastic piece toward the rotor, a number of protrusions formed on the outer peripheral surface of the connecting ring for easy gripping, and a locking step formed on the inner surface of the tip of the connecting ring and engaged with the stopper of the nozzle.

[0018] One of the bearings is mounted inside a motor housing to rotate a rotor, and the other bearing is mounted inside a rear cover to rotate the rotor.

[0019] The front cover is fixed to the front end of the motor housing by ultrasonic welding or an insert molding method, and the rear cover has fixing pieces at the top and bottom to be connected to connection holes formed at the rear end of the motor housing. Effect of the Invention

[0020] According to the present invention, the rotor, which is connected by penetrating the motor housing and the vibration part, simultaneously serves to receive the cleaning solvent and to transmit the vibration, so that a separate supply pipe is not required, which contributes to cost reduction and improved productivity, and also simplifies the internal structure to improve performance.

[0021] In addition, according to the present invention, the nozzle is removably fixed to the tip of the rotor, so that various nozzles can be selectively replaced and used depending on the object to be cleaned, thereby improving convenience in use.

[0022] In addition, according to the present invention, it is possible to efficiently clean an object by supplying various cleaning solvents such as water, oil, powder, and air to the through-hole of the rotor. [Brief description of the drawings]

[0023] [Figure 1] 1 is a perspective view of a vibration motor to which an embodiment of the present invention is applied; [Diagram 2] 1 is an exploded perspective view of a vibration motor to which an embodiment of the present invention is applied; [Diagram 3] 1 is a side cross-sectional view of a vibration motor to which an embodiment of the present invention is applied; [Figure 4] 1 is a front sectional view of a vibration motor to which an embodiment of the present invention is applied; [Diagram 5] FIG. 2 is an exploded perspective view of a vibration section according to the present invention. [Figure 6] FIG. 2 is a cross-sectional view of a coupled state of a rotor and a nozzle according to the present invention. [Figure 7] FIG. 2 is a cross-sectional view of a coupled state of a rotor and a nozzle according to the present invention. [Figure 8] FIG. 2 is a cross-sectional view of a coupled state of a rotor and a nozzle according to the present invention. [Figure 9] FIG. 4 is a perspective view showing another embodiment of the nozzle of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described in this specification can be modified in various ways. Specific embodiments are depicted in the drawings and can be described in detail in the detailed description. However, the specific embodiments disclosed in the accompanying drawings are merely for the purpose of making the various embodiments easily understandable. Therefore, the technical idea is not limited to the specific embodiments disclosed in the accompanying drawings, and it should be understood that the invention includes all equivalents or alternatives included in the idea and technical scope of the invention.

[0025] Terms including ordinal numbers such as "first", "second", etc. may be used to describe various components, but these components are not limited to the above-mentioned terms. The above-mentioned terms are used only to distinguish one component from another component.

[0026] In this specification, the terms "comprise" or "have" are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, and should be understood as not precluding the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. When a component is described as being "coupled" or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, or there may be another component between them. In contrast, when a component is described as being "directly coupled" or "directly connected" to another component, it should be understood that there is no other component between them.

[0027] On the other hand, a "module" or "unit" for a component used in this specification performs at least one function or operation. A "module" or "unit" can perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of "modules" or a plurality of "units" may be integrated into at least one module, except for a "module" or "unit" that is to be performed by a specific piece of hardware or at least one processor. A singular expression includes a plural expression unless the context clearly indicates a different meaning.

[0028] In addition, when describing the present invention, if it is determined that a specific description of related publicly known functions or configurations may unnecessarily obscure the gist of the present invention, the detailed description thereof will be shortened or omitted.

[0029] FIG. 1 is a perspective view of a vibration motor to which the present invention is applied, and FIG. 2 is an exploded perspective view of the vibration motor to which the present invention is applied.

[0030] The vibration motor 100 having a through hole formed in a rotor of the present invention includes a motor housing 110, a vibration unit 120 coupled to both sides inside the motor housing 110 and rotating the rotor 130 forward and backward to impart vibration, a rotor 130 having a certain length with a through hole formed therein and coupled to the center of the motor housing 110, a nozzle 140 detachably coupled to the front of the rotor 130, a coupling unit 150 for fixing the rotor 130 to the nozzle 140, bearings 160, 160' coupled to the rotor 130 inside the motor housing 110 and guiding the rotation of the rotor 130, and a front cover 170 and a rear cover 170' coupled to the front and rear of the motor housing 110.

[0031] The motor housing 110 has a rotor 130 inserted therein and coupled thereto, and has a mounting hole 112 penetrating the inner center of the body 111.

[0032] A coupling space 113 to which the vibrating part 120 is coupled is formed inside both sides of the body part 111 with the mounting hole 112 as a center.

[0033] A front cover 170 is fixedly connected to the front end of the body 111, and connection holes 114 are formed at the top and bottom of the rear end so that a rear cover 170' can be connected to the rear end.

[0034] In addition, the vibrating part 120 is fixed inside the motor housing 110 by installing a stator 121 in a coupling space 113 formed on both sides inside the main body 111 and coupling insulators 122 to the front and rear ends of the stator 121.

[0035] Here, as shown in FIG. 5, it is preferable that the stator 121 and the insulator 122 are integrally formed by insert injection, and a coil 123 is wound around the stator 121 .

[0036] Magnets 124 are fixed to both sides of the rotor 130, and the rotor 130 rotates forward and backward to generate vibrations as the vibrating part 120 configured as described above operates.

[0037] As shown in FIG. 6, the rotor 130 supplies the cleaning solvent to the nozzle 140 while being vibrated by the vibrating part 120 .

[0038] The rotor 130 is formed to a certain length and includes a shaft 131 having a through hole 131' therein.

[0039] The shaft 131 has a front end connected to a connecting body 141 of a nozzle 140 , a central portion located inside the motor housing 110 , and a rear end exposed to the outside of the motor housing 110 .

[0040] The shaft 131 has a rectangular cross section at its center, and the front and rear end portions have circular cross sections centered on the central portion of the rectangular cross section.

[0041] The shaft 131 has mounting grooves 132 formed on both sides of the center thereof, into which the magnets 124 of the vibration part 120 are mounted.

[0042] The shaft 131 has insertion holes 133 formed on both sides of the tip thereof, the insertion holes 133 being open forward, so that the shaft 131 is inserted into and coupled with an insertion protrusion 145 formed on the nozzle 140 .

[0043] The shaft 131 has fixing grooves 134 formed on the upper and lower parts of the outer circumferential surface thereof behind the insertion hole 133 , so that the shaft 131 is fixed to the coupling body 141 of the nozzle 140 by operating the coupling part 150 .

[0044] An insertion hole 133 and a fixing groove 134 are formed at the tip of the shaft 131, so that the rotor 130 can be detachably fixed to the nozzle 140.

[0045] As described above, the rotor 130 simultaneously serves to receive the cleaning solvent and to transmit the vibration, so that no separate supply pipe is required.

[0046] The nozzle 140 includes a coupling body 141 to which the front end of the rotor 130 is coupled, and a nozzle tip 142 is provided at the front end of the coupling body 141, through which the cleaning solvent supplied from the rotor 130 is sprayed.

[0047] Elastic pieces 143 having elasticity are formed on the upper and lower parts of the coupling body 141, and a fixing protrusion 144 is provided on the tip of the elastic piece 143 in an inward direction so that the rotor 130 can be fixed.

[0048] An insertion protrusion 145 is formed on the inner portion, which is the boundary between the coupling body 141 and the nozzle tip 142, and is inserted into an insertion hole 133 formed at the front end of the rotor 130 for coupling.

[0049] The elastic piece 143 has a stopper 146 protruding outward at its tip, so that the coupling part 150 does not come off the elastic piece 143 when the coupling part 150 is operated.

[0050] 9, cleaning solvents such as oil, powder, air, as well as water, are supplied to the through-holes 131' of the rotor 130 and sprayed through the nozzle 140. The nozzle 140 has different uses depending on the shape or material of the object to be cleaned, the amount of cleaning solvent, cleaning strength, and cleaning area. Various nozzles can be selectively attached to the tip of the rotor 130 for appropriate use.

[0051] 7 and 8, the coupling part 150 includes a coupling ring 151 coupled to an outer circumferential surface of the coupling body 141 of the nozzle 140. As shown in FIG.

[0052] When the nozzle 140 is separated from the rotor 130, the connecting ring 151 is located on the motor housing 110 side. In order to fix the nozzle 140 to the rotor 130 while the nozzle 140 is connected to the rotor 130, the connecting ring 151 is first moved toward the nozzle tip 142 side, and the inner surface of the connecting ring 151 presses the elastic piece 143, and the fixing protrusion 144 formed on the elastic piece 143 fits closely into the fixing groove 134 of the rotor 130, thereby fixing the rotor 130 and the nozzle 140.

[0053] A number of protrusions 152 are formed annularly on the outer circumferential surface of the coupling ring 151 to prevent slipping when the user holds it.

[0054] A stopper 153 is formed at the tip of the coupling ring 151 so that when the coupling ring 151 is moved to couple the nozzle 140 to the rotor 130, the coupling ring 151 is stopped by the stopper 146 of the nozzle 140 and does not move any further.

[0055] In addition, the bearings 160, 160' are installed to rotate the rotor 130, and the outer peripheral surface of one of the bearings 160 is installed inside the motor housing 110 and its inner peripheral surface is in close contact with the outer peripheral edge of the rotor 130, while the outer peripheral surface of the other bearing 160' is installed inside the rear cover 170' and its inner peripheral surface is in close contact with the outer peripheral edge of the rotor 130 to guide the rotation of the rotor 130.

[0056] The front cover 170 closes the front open portion of the motor housing 110 and is fixed by ultrasonic welding or an insert molding method.

[0057] The rear cover 170' closes the open rear portion of the motor housing 110, and has fixing pieces 171 formed on the upper and lower parts thereof, and the fixing pieces 171 are connected to connecting holes 114 formed in the motor housing 110 to fix the rear cover 170'.

[0058] That is, in the vibration motor having a through hole formed in the rotor of the present invention, the rotor 130 serves to receive the cleaning solvent and to transmit the vibration at the same time, so that a separate supply pipe is not required, which contributes to cost reduction and productivity improvement, and simplifies the internal structure to improve performance.

[0059] In addition, the present invention improves user convenience by fixing a nozzle to the tip of the rotor 130 in a removable manner, allowing various nozzles to be selectively replaced and used depending on the object to be cleaned.

[0060] As described above, although the present invention has been described by way of limited embodiments and drawings, the terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical ideas of the present invention.

[0061] Therefore, it should be understood that the embodiment described in this specification and the configuration shown in the drawings are merely one embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and therefore various equivalents and modifications may be possible without departing from the scope of the claims of the present invention.

Claims

1. A motor housing (110); a vibration unit (120) coupled to both inner sides of the motor housing (110) and rotating the rotor (130) forward and backward to impart vibration; a rotor (130) having a certain length and a through hole formed therein, the rotor (130) being coupled to a central portion of the motor housing (110); a nozzle (140) detachably coupled to the front of the rotor (130); a coupling (150) for fixing the rotor (130) to a nozzle (140); a bearing (160, 160') coupled to the rotor (130) in the motor housing (110) and configured to guide the rotation of the rotor (130); a front cover (170) and a rear cover (170') coupled to the front and rear of the motor housing (110), The motor housing (110) is A main body portion (111); a mounting hole 112 formed in the center of the inner side of the body 111 and into which a rotor 130 is inserted and coupled; a coupling space (113) formed on both sides of the body part (111) around the mounting hole (112) and into which the vibration part (120) is coupled; and coupling holes (114) provided at the upper and lower parts of the rear end of the body (111) to which a rear cover (170') is coupled.

2. The vibration part (120) is a stator (121) mounted on each of the inner sides of the body (111) of the motor housing (110); an insulator (122) for fixing the stator (121) inside the motor housing (110); A coil (123) wound around the stator (121); 2. The vibration motor according to claim 1, further comprising: magnets (124) mounted on both sides of the rotor (130).

3. 3. The vibration motor with a through hole formed in a rotor according to claim 2, wherein the stator (121) and the insulator (122) are integrally formed by insert injection.

4. The rotor (130) is The shaft (131) has a certain length, a through hole (131') formed therein, a tip end of which is connected to the nozzle (140), a center part of which is located inside the motor housing (110), and a rear end of which is exposed to the outside of the motor housing (110); A mounting groove (132) is provided on both sides of the center of the shaft (131) and a magnet (124) is mounted in the mounting groove (132); an insertion hole (133) provided at the tip of the shaft (131) and into which a nozzle (140) is coupled; 2. The vibration motor with a through hole formed in a rotor according to claim 1, further comprising: a fixing groove (134) formed on an outer circumferential surface of the shaft (131) behind the insertion hole (133) and into which the nozzle (140) is coupled.

5. The nozzle (140) A coupling body (141) coupled to receive the rotor (130); A nozzle tip (142) formed at the tip of the coupling body (141); The coupling body (141) has elastic pieces (143) at the top and bottom thereof, A fixing protrusion (144) is formed on the inside of the tip of the elastic piece (143) and fixes the coupling body (141) to the rotor (130); and an insertion protrusion (145) formed on the inner portion, which is the boundary between the coupling body (141) and the nozzle tip (142), and coupled to the tip of the rotor (130), 2. The vibration motor with a through hole formed in a rotor according to claim 1, further comprising a stopper (146) protruding from a tip of the elastic piece (143).

6. The coupling portion (150) is a coupling ring (151) coupled to the coupling body (141) of the nozzle (140) and pressing the elastic piece (143) toward the rotor (130); A number of protrusions (152) are formed on the outer circumferential surface of the coupling ring (151) to facilitate gripping; 2. The vibration motor with a through hole formed in the rotor according to claim 1, further comprising: a locking step (153) formed on an inner surface of the tip of the coupling ring (151) and locked to a stopper (146) of the nozzle (140).

7. 2. The vibration motor with a through hole formed in a rotor according to claim 1, wherein one of the bearings (160, 160') is mounted inside a motor housing (110) to rotate the rotor (130), and the other bearing (160') is mounted inside a rear cover (170') to rotate the rotor (130).

8. 2. The vibration motor with a through hole formed in a rotor according to claim 1, wherein the front cover (170) is fixed to the front end of the motor housing (110) by ultrasonic welding or an insert molding method, and the rear cover (170') has fixing pieces (171) on upper and lower parts so as to be connected to a connection hole (114) formed at the rear end of the motor housing (110).

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