CN1420603A

CN1420603A - Motor for vacuum cleaner

Info

Publication number: CN1420603A
Application number: CN 01139917
Authority: CN
Inventors: 朴柱洪
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2001-11-19
Filing date: 2001-11-19
Publication date: 2003-05-28
Anticipated expiration: 2021-11-19
Also published as: CN1278476C

Abstract

A motor for vacuum cleaner is composed of casing, end covers, stator, rotor, shaft, blade wheel and its cover, stator terminal, and electric brush and its terminals for contacting with stator terminal. Its feature is that said electric brush has 3 contact parts with stator terminal, so having high contact reliability.

Description

Motor for vacuum cleaner

Technical field

The invention belongs to motor, particularly motor for vacuum cleaner.

Background technology

Below with reference to Fig. 1, Fig. 2 a and Fig. 2 b, the motor for vacuum cleaner of prior art is described.Fig. 1 is the simple knot composition of the motor for vacuum cleaner of prior art, Fig. 2 a and Fig. 2 b are the enlarged drawings of Fig. 1 " A " portion in stator terminal and the brush termination contact process, Fig. 2 a is that the lateral surface from motor casing 110 is when inserting brush 31 to the inside, stator terminal 14 rigidly connects the situation of the brush terminal 32 that gets an electric shock, and Fig. 2 b is the situation of brush 31 when inserting fully.

As shown in Figure 1, in the inboard of motor casing 110, force the stator 120 that has stator terminal 14 is installed, be pressed into rotor 135 with motor shaft 131, rotor 135 is positioned at the inside of stator 120.Motor cover 115 combines with motor casing 110, and guide vane 141 combines with motor cover 115.Also have axle sleeve 23 and impeller 145 to utilize packing ring 27 to combine, make impeller cover 147 be pressed into the outside of motor casing 110 with motor shaft 131.

The inboard brush 31 that inserts from the lateral of motor casing 110.The effect of brush 31 makes the voltage that is applied on the stator 120 pass to rotor 135.Brush 31 is provided with and stator terminal 14 contacted brush terminals 32.The free end of stator terminal 14 and brush terminal 32 is bent, and stator terminal 14 and brush terminal 32 elastic force by free end is in contact with one another.

Prior art motor for vacuum cleaner shown in Fig. 2 a and Fig. 2 b has following shortcoming: when inserting brush 31 from the lateral of motor casing 110 is inboard, the free end of stator terminal 14 advances to the bend 32a of brush terminal 32 egregiously, causes 32 distortion of brush terminal.Therefore, produce the loose contact of 32 of stator terminal 14 and brush terminals, can't starter motor.

Summary of the invention

Technical problem to be solved by this invention is: the motor for vacuum cleaner with following characteristics is provided, and the stator terminal of motor keeps firm contacting with the brush terminal, improves the structure of stator terminal and brush terminal, improves reliability of products.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the stator terminal that has bend that motor for vacuum cleaner has the fixed part that is fixed on the stator and prolongs behind the end bent of fixed part; Insert from the lateral of motor casing is inboard, be installed in the brush on the motor casing; On brush with above the bend of stator terminal with brush terminal following and that the front contacts simultaneously.

The front of the bend of described stator terminal forms the standing groove with designated depth, and the brush terminal comprises, the joint portion that combines with brush; Contacted the 1st contact site on self end of joint portion curved elongated forms bend with stator terminal; The support portion of the opposite side that is supported on brush that self end of curved elongated forms on the end of the 1st contact site; Separately prolong in a side of the 1st contact site, be placed on the 2nd contact site that contacts on the standing groove of bend of stator terminal; The 3rd contact site that on the end of the 2nd contact site, contacts below the bend of curved elongated and stator terminal.

The beneficial effect of motor for vacuum cleaner of the present invention is, as long as brush and motor casing install, the the 1st, the 2 and the 3rd contact site of brush terminal will and followingly contact respectively with top, the front of the bend of stator terminal.That is,,, improved product reliability so can not come in contact badly because there are a plurality of contact sites in stator terminal and brush terminal.

Description of drawings

Fig. 1: the simple knot composition of the motor for vacuum cleaner of prior art.

Fig. 2 a and Fig. 2 b: in stator terminal and the brush termination contact process, the enlarged drawing of Fig. 2 " A " portion.

Fig. 3: the simple knot composition of example motor for vacuum cleaner of the present invention.

Fig. 4: the oblique view of example stator terminal of the present invention.

Fig. 5: the oblique view of example brush terminal of the present invention.

Fig. 6 a and Fig. 6 b: in stator terminal and the brush termination contact process, the enlarged drawing of Fig. 3 " B " portion.

In the drawings

14. stator terminal 23. axle sleeves 27. packing rings

31. brush 32. brush terminal 32a. bends

100. motor 110. motor casings 115. motor cover

120. stator 125. stator terminal 126. fixed parts

127. bend 127a. standing groove 131. motor shafts

135. rotor 141. guide vanes 145. impellers

147. impeller cover 150. brushes 153. brush terminals

154. 155. first contact sites, 156. support portions, joint portion

157. second contact site 158. the 3rd contact site

Embodiment

With reference to the accompanying drawings, example motor for vacuum cleaner of the present invention is elaborated.

Fig. 3 is the simple knot composition of example motor for vacuum cleaner of the present invention.

As shown in the figure, has unlimited motor casing 110 below the motor 100.Stator 120 is pressed into the inside that is fixed on motor casing 110.In the inside of stator 120 rotor 135 that is pressed into by motor shaft 131 is arranged, it can be rotated.The motor cover of covering in the bottom of rotor 135 115 connects as one with motor casing.Guide vane 141 is arranged on motor cover 115.The end of the axle 131 that protrudes from the outside of guide vane 141 is fixed with impeller 145.The impeller cover 147 that surrounds impeller 145 is fixed on the motor casing 110.The inboard brush 150 that inserts is installed on the motor casing 110 from the lateral of motor casing 110, and the stator terminal 125 and the brush terminal 153 that are in contact with one another are arranged respectively on stator 120 and brush 150.That is, brush 150 is installed on the motor casing 110, and stator terminal 125 and brush terminal 153 will contact with each other.

Apply outside power supply to stator 120, external power source will convey to rotor 135 by brush 150.Like this, make rotor 135 rotations according to stator 120 and rotor 135 interactions, so axle 131 and impeller 145 will rotate.After impeller 145 rotations, air outside flows to the center of impeller 145, spues from impeller 145 outsides.The air flow guide vane 141 that is spued, cooling stator 120 and rotor 135 are discharged to the outside of motor casing 110.

The stator terminal 125 of the motor for vacuum cleaner of this example and brush terminal 153 can always keep firm and contact with each other.That is to say, a plurality of positions is contacted with each other,, just can always keep firm contact as long as brush 150 is installed on the motor casing 110.Describe with reference to Fig. 4 and Fig. 5.Fig. 4 is the oblique view of example stator terminal of the present invention, and Fig. 5 is the oblique view of example brush terminal of the present invention.

As shown in the figure, stator terminal 125 comprises the bend 127 that inserts the fixed part 126 be fixed on the stator 120 and prolong behind about 90 ° of the end bent of fixed part.The standing groove 127a that designated depth is arranged in the front of bend 127.

Joint portion 154 that is combined on the brush 150 and first contact site 155 that crooked back prolongs on joint portion 154 are arranged on the brush terminal 153.Contact above the bend 127 of the end of first contact site 155 and stator terminal 125, the width D 1 of first contact site 155 is roughly the same with the width d1 of bend 127.Brush terminal 153 has crooked back to prolong in the end of first contact site 155 support portion 156, the opposite side of brush 150 is supported in support portion 156, makes the contact securely on bend 127 of first contact site 155.

Also have the 2nd contact site 157 and the 3rd contact site 158 on the brush terminal 153.The 2nd contact site 157 separately prolongs in a side of the 1st contact site 155, and is placed on the standing groove 127a of bend 127.For the 2nd contact site 157 deeper is placed in the standing groove 127a, the width D 2 of the 2nd contact site 157 is made narrower than the width D 1 of the 1st contact site 155.And the width D 2 of the 2nd contact site 157 is narrower than the width of the opening port of standing groove 127a, and is wideer than the width of seal.So the 2nd contact site 157 can contact with the front of the bend 127 that standing groove 127a is arranged.The 3rd contact site 158 contacts below bend 127 in the end bent prolongation of the 2nd contact site 157.

The figure that Fig. 6 a and Fig. 6 b describe the contact process of stator terminal and brush terminal by Fig. 3 " B " portion enlarged drawing, Fig. 6 a is when inserting brush 150 from the lateral of motor casing 110 is inboard, stator terminal 127 rigidly connects the situation of the brush terminal 153 that gets an electric shock, and Fig. 6 b is the situation of brush 150 when inserting fully.

Shown in Fig. 6 a, the inboard brush 150 that inserts from the lateral of motor casing 110 makes the 2nd contact site 157 of brush terminal 153 be positioned at the standing groove 127a of bend 127.Then, shown in Fig. 6 b, further to the interior insertion of motor casing 110, the 1st contact site 155 is contacted with the top of bend 127 brush 150, the 2nd contact site 157 contacts with the front of the bend 127 that standing groove 127a is arranged, and the 3rd contact site 158 contacted with the following of bend 127.

The end portion supports of support portion 156 on brush 150, make the 1st contact site 155 pressing bend 127 above.Because the 2nd contact site 157 contacts with the front of the bend 127 that standing groove 127a is arranged, thus the front that the 2nd contact site 157 passes through bend 127 in the support portion 156 directions stressed.So the 1st contact site 155 just can contact on bend 127 securely.

The front that the 2nd contact site heads on bend 127 contacts with the front of bend 127, and the following and bend 127 that the 3rd contact site 158 heads on bend 127 contacts, so stator terminal 125 just can remain firm contacting with brush terminal 155.

Claims

1. one kind comprises motor casing (110), motor cover (115), stator (120), rotor (135), motor shaft (131), impeller (145), the motor for vacuum cleaner of impeller cover (147) is characterized in that: the stator terminal that has bend (127) (125) that vacuum cleaner motor also includes the fixed part (127) that is fixed on the stator (120) and prolongs at the end bent of fixed part (127); Insert from the lateral of motor casing (110) is inboard, be installed in the brush (150) on the motor casing (110); On brush (150) with above bends stator terminal (125) (127) with brush terminal (153) following and that the front contacts simultaneously.

2. according to the said vacuum cleaner motor of claim 1, it is characterized in that: vacuum cleaner motor forms the standing groove (127a) with designated depth in the front of the bend (127) of stator terminal (125), brush terminal (153) comprises, the joint portion (154) that combines with brush (150); Contacted the 1st contact site (155) on self end of joint portion (154) curved elongated forms bend (127) with stator terminal (125); The support portion (156) of the opposite side that is supported on brush (150) that self end of curved elongated forms on the end of the 1st contact site (155); Side at the 1st contact site (155) separately prolongs, and the standing groove (127a) that is placed on the bend (127) of stator terminal (125) is gone up the 2nd contact site (157) of contact; The 3rd contact site (158) that on the end of the 2nd contact site (157), contacts below the bend (127) of curved elongated and stator terminal (125).