Motor

Abstract

The present invention provides a motor that can fully eliminate electrical noise. The present invention also provides a motor that can cope with a situation where a choke coil is not provided. The motor (1) includes: a choke coil (2); a terminal (3) electrically connected to a lead wire (23a) led out from the choke coil (2); and a bracket (5) having a first wall portion (51), a second wall portion (52) and an elastic portion (59), wherein the elastic portion (59) is located between the first wall portion (51) and the second wall portion (52) in the axial direction of the choke coil (2), the choke coil (2) is located between the elastic portion (59) and the second wall portion (52) in the axial direction, the terminal (3) is sandwiched between the first wall portion (51) and the elastic portion (59) in the axial direction, and the lead wire (23a) is led from one side of the elastic portion (59) to one side of the first wall portion (51).

Description

Technical Field

[0001] The invention relates to an electric motor. Background Art

[0002] Conventionally, there is known a motor which includes a terminal connected to an external terminal and a bracket accommodating the terminal, and is driven by connecting the external terminal to the terminal.

[0003] In such a motor, a technology of providing a choke coil is known in order to suppress malfunction or the like caused by electrical noise generated when the motor is driven being transmitted to other electrical equipment and electronic equipment (see Patent Document 1).

[0004] (Prior art literature)

[0005] (Patent Document)

[0006] Patent document 1: JP2011-004569A. Summary of the invention

[0007] (Problem to be solved by the invention)

[0008] For example, in the motor disclosed in Patent Document 1, depending on how the lead wires led out from the choke coil are processed, electrical noise blocked by the choke coil may be transmitted to the lead wires, making it difficult to sufficiently eliminate the electrical noise.

[0009] Furthermore, a motor structure is also required that can cope with both situations where a choke coil is provided and situations where a choke coil is not provided.

[0010] One of the objects of the present invention is to provide a motor that can sufficiently eliminate electrical noise. Another object of the present invention is to provide a motor that can also cope with a case where a choke coil is not provided.

[0011] (Solutions used to solve problems)

[0012] The above-mentioned problems are solved by the following present invention. That is, the motor of the present invention includes: a choke coil; a terminal electrically connected to a lead wire drawn from the choke coil; and a bracket having a first wall portion, a second wall portion, and an elastic portion, wherein the elastic portion is located between the first wall portion and the second wall portion in the axial direction of the choke coil, the choke coil is located between the elastic portion and the second wall portion in the axial direction, the terminal is sandwiched between the first wall portion and the elastic portion in the axial direction, and the lead wire is drawn from the elastic portion side to the first wall portion side.

[0013] In the motor of the present invention, the elastic portion is capable of bending from the first wall portion side to the second wall portion side.

[0014] The terminal and the lead wire may be sandwiched between the first wall portion and the elastic portion in the axial direction.

[0015] The lead wire can be engaged with the recessed portion of the terminal.

[0016] Furthermore, in the motor of the present invention, the bracket may include a third wall portion and a fourth wall portion that are opposed to each other, and the choke coil may be located between the third wall portion and the fourth wall portion in a radial direction of the choke coil.

[0017] Furthermore, in the motor of the present invention, a recess may be formed on the bottom surface of the bracket, and a part of the choke coil may be embedded in the recess.

[0018] On the other hand, the motor of the present invention includes: a terminal component, which has a pair of terminals and a connecting portion, and the connecting portion connects the pair of terminals to each other; and a bracket, which has a first wall portion, a second wall portion and an elastic portion, and the elastic portion is located between the first wall portion and the second wall portion, and the terminal component has a first mark and a second mark, the first mark is formed between one terminal of the pair of terminals and the connecting portion, the second mark is formed between the other terminal of the pair of terminals and the connecting portion, and the connecting portion can be separated from the pair of terminals.

[0019] At this time, a recessed portion may be formed on a bottom surface of the bracket, and the coupling portion may be disposed to face the recessed portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematically showing a motor according to an embodiment of the present invention.

[0021] Figure 2 This is a side view schematically showing an extracted area around a choke coil of a motor according to an embodiment of the present invention.

[0022] Figure 3 yes Figure 1 An enlarged cross-sectional view of section XX is shown.

[0023] Figure 4 This is a side view schematically showing an extracted area around a choke coil of a motor according to a first modified example as an example of the present invention.

[0024] Figure 5 This is an enlarged cross-sectional view showing a terminal of a motor according to a first modified example as an example of the present invention.

[0025] Figure 6 This is a side view schematically showing an extracted area around a terminal member of a motor according to a second modified example as an example of the present invention.

[0026] Figure 7 It is a side view showing a terminal member of a motor according to a second modified example as an example of the present invention. DETAILED DESCRIPTION

[0027] Hereinafter, a motor according to an embodiment of the present invention will be described with reference to the drawings.

[0028] Figure 1 1 is a front view schematically showing a motor 1 according to an embodiment of the present invention. Figure 2 This is a side view schematically showing an extracted area around a choke coil 2 of a motor 1 according to an embodiment of the present invention. Figure 3 yes Figure 1 Enlarged cross-sectional view of section XX.

[0029] like Figure 1 to Figure 3 As shown, the motor 1 of this embodiment includes a choke coil 2, terminals 3 and 4 connected to the choke coil 2 (hereinafter, the terminal 3 and the terminal 4 are referred to as "the first terminal 3" and "the second terminal 4"), and a bracket 5 for accommodating the choke coil 2, the first terminal 3 and the second terminal 4.

[0030] In addition, the motor 1 includes: a housing 6 that accommodates the bracket 5; a PTC (Positive Temperature Coefficient) thermistor 7 that has a positive temperature coefficient; terminals 8 and 9 (hereinafter, terminals 8 and 9 are referred to as "third terminal 8" and "fourth terminal 9") connected to the PTC thermistor 7; and a commutator 10 that is electrically connected to the choke coil 2.

[0031] In the description of the present embodiment, in the direction of the axis x of the motor 1, the direction of arrow a is set as the upper side a, and the direction of arrow b is set as the lower side b. Moreover, in the direction perpendicular to the axis x, in the length direction of the choke coil 2 (the direction of arrow c and the direction of arrow d, hereinafter also referred to as the "length direction cd"), the direction of arrow c is set as one side c of the length direction, and the direction of arrow d is set as the other side d of the length direction. Furthermore, in the vertical direction perpendicular to both the direction of the axis x and the length direction cd (the direction of arrow e and the direction of arrow f, hereinafter also referred to as the "vertical direction ef"), the direction of arrow e is set as one side e of the vertical direction, and the direction of arrow f is set as the other side f of the vertical direction. The length direction of the choke coil 2 is also the axial direction of the choke coil 2, and the vertical direction of the choke coil 2 is also the radial direction of the choke coil 2.

[0032] In the motor 1 of this embodiment, the first terminal 3 and the third terminal 8 provided on one side c in the longitudinal direction are connected to the commutator 10 , and the second terminal 4 and the fourth terminal 9 provided on the other side d in the longitudinal direction are connected to external terminals not shown.

[0033] The choke coil 2 is provided on the arrow e side in the bracket 5 , and includes an iron core 21 and a coil 22 wound around the outer peripheral surface of the iron core 21 .

[0034] Lead 23a and lead 23b are led out from the choke coil 2, wherein lead 23a is led out from the coil 22 to one side c in the length direction and is electrically connected to the commutator 10 (hereinafter, the lead connected to the commutator 10 is referred to as the "commutator side lead"), and lead 23b is led out from the coil 22 to the other side d in the length direction and is electrically connected to an external terminal not shown in the figure (hereinafter, the lead connected to the external terminal is referred to as the "external terminal side lead").

[0035] The first terminal 3 is connected to a commutator-side lead 23 a drawn out from the choke coil 2 . The second terminal 4 is connected to an external-terminal-side lead 23 b drawn out from the choke coil 2 .

[0036] The first terminal 3 includes a main body portion 31 extending in the vertical direction ef, an end portion 32 located on the choke coil 2 side, and an end portion 33 located on the commutator 10 side.

[0037] In the end portion 32 of the first terminal 3, the side surface portion 32c on one side c in the longitudinal direction faces the surface 5d of the bracket 5 that stands upward toward the upper side a and faces the other side d in the longitudinal direction, and the side surface portion 32d on the other side d in the longitudinal direction faces the side surface portion 2c of the choke coil 2 ( Figure 3 ).

[0038] The front end of the end portion 32 on one side e in the vertical direction is bent at a substantially right angle toward the other side d in the longitudinal direction.

[0039] A convex portion 321 protruding toward the other side d in the longitudinal direction is formed on the end portion 32. In addition, the end portion 32 has a fixing portion 322 ( Figure 2 ).

[0040] The fixing portion 322 fits into the fitting hole 50 a provided on the bottom surface portion 5 b of the bracket 5 to fix the first terminal 3 to the bracket 5 .

[0041] In the end portion 33 of the first terminal 3 , the side surface 33 c on one longitudinal side c faces the surface 5 d of the bracket 5 that rises upward a and faces the other longitudinal side d, and the side surface 33 d on the other longitudinal side d faces the commutator 10 .

[0042] The second terminal 4 includes: a main body portion 41 having a side portion 41e facing one side e in the vertical direction and a side portion 41f facing the other side f in the vertical direction; an end portion 42, which is bent at a substantially right angle from one side c in the length direction of the main body portion 41 toward one side e in the vertical direction; and an end portion 43, which is bent at a substantially right angle from the other side d in the length direction of the main body portion 41 toward the other side f in the vertical direction.

[0043] The main body 41 of the second terminal 4 has a fixing portion 413 that extends from the lower end portion 41b of the lower side b toward the lower side b and is fixed to the bracket 5 ( Figure 2 ).

[0044] The fixing portion 413 fits into the fitting hole 50 b provided on the bottom surface portion 5 b of the bracket 5 to fix the second terminal 4 to the bracket 5 .

[0045] Furthermore, holes 412 a and 412 b are formed in the main body 41 , and the second terminal 4 is fixed to the bracket 5 by inserting the pin P1 into the holes 412 a and 412 b.

[0046] In the end portion 42 of the second terminal 4, the side portion 42c facing the one side c in the longitudinal direction faces the bracket 5. The end portion 42 is formed with a convex portion 421 ( Figure 2 ).

[0047] The end portion 43 of the second terminal 4 includes a bent portion 44 bent at a substantially right angle from the main body portion 41 toward the other side f in the vertical direction, a front end portion 45 bent at an obtuse angle from the bent portion 44 toward one side c in the longitudinal direction, and a frontmost end portion 46 which is the frontmost end of the front end portion 45. The frontmost end portion 46 is further bent from the front end portion 45 toward one side e in the vertical direction.

[0048] The bracket 5 is made of resin and includes a first wall portion 51, a second wall portion 52, a third wall portion 53 and a fourth wall portion 54 arranged on one side e in the vertical direction, a fifth wall portion 55, a sixth wall portion 56, a seventh wall portion 57 and an eighth wall portion 58 arranged on the other side f in the vertical direction, and elastic portions 59, 60.

[0049] A recess 511 is formed on the bottom surface 5b of the bracket 5 (hereinafter, the recess 511 of the bracket 5 is referred to as a "bracket recess") ( Figure 2 ).

[0050] Furthermore, the bracket 5 includes: housing portions 512 a and 512 b provided at the other side d in the longitudinal direction; and opening portions 513 a and 513 b communicating the spaces of the housing portions 512 a and 512 b with the space outside the bracket 5 .

[0051] The first wall portion 51 is provided on one side c in the longitudinal direction. In the first wall portion 51 , an outer wall surface 51 c facing the one side c in the longitudinal direction contacts the housing 6 , and an inner wall surface 51 d facing the other side d in the longitudinal direction faces the first terminal 3 .

[0052] The second wall portion 52 is disposed on the other side d in the longitudinal direction. In the second wall portion 52, an inner wall surface 52c on one side c in the longitudinal direction is opposite to the side surface 2d of the choke coil 2, and an inner wall surface 52f on the other side f in the vertical direction is in contact with the side surface 41e of the main body 41 of the second terminal 4.

[0053] The choke coil 2 is provided between the first wall portion 51 and the second wall portion 52 in the longitudinal direction cd.

[0054] The third wall portion 53 is provided between the first wall portion 51 and the second wall portion 52 in the length direction cd. In the third wall portion 53, an outer wall surface portion 53e on one side e in the vertical direction contacts the housing 6, and an inner wall surface portion 53f on the other side f in the vertical direction faces the side surface portion 2e of the choke coil 2.

[0055] The fourth wall portion 54 is disposed on the other side d in the longitudinal direction. In the fourth wall portion 54, the inner wall surface 54c on one side c in the longitudinal direction faces the side surface 2d of the choke coil 2, and the inner wall surface 54e on one side e in the vertical direction faces the side surface 2f of the choke coil 2.

[0056] In addition, in the fourth wall portion 54, an inner wall surface portion 54f facing the other side f in the vertical direction faces the commutator 10. The inner wall surface portion 54f is curved so that the other side f in the vertical direction of the fourth wall portion 54 is recessed.

[0057] The third wall portion 53 and the fourth wall portion 54 are opposed to each other, and in the vertical direction ef, the choke coil 2 is located between the third wall portion 53 and the fourth wall portion 54. Specifically, the extension direction of the inner wall surface 53f of the third wall portion 53 and the extension direction of the inner wall surface 54e of the fourth wall portion 54 are parallel to the length direction cd of the choke coil 2.

[0058] The fifth wall portion 55 is provided on one longitudinal side c. In the fifth wall portion 55 , an inner wall surface 55 e facing one vertical side e contacts the PTC thermistor 7 , and an inner wall surface 55 h connected to the other longitudinal side d faces the fourth terminal 9 .

[0059] The sixth wall portion 56 is provided on the other side d in the longitudinal direction. In the sixth wall portion 56 , an inner wall surface portion 56 e facing one side e in the vertical direction faces the fourth terminal 9 .

[0060] The seventh wall portion 57 is provided between the fifth wall portion 55 and the sixth wall portion 56 in the longitudinal direction cd. In the seventh wall portion 57, an outer wall surface portion 57f directed toward the other side f in the vertical direction is in contact with the housing 6.

[0061] The eighth wall portion 58 is provided on the other side d in the longitudinal direction. In the eighth wall portion 58, an inner wall surface 58e facing one side e in the vertical direction faces the commutator 10. The inner wall surface 58e is curved so that the one side e in the vertical direction of the eighth wall portion 58 is recessed.

[0062] In the eighth wall portion 58 , an inner wall surface 58 f facing the other side f in the vertical direction contacts the PTC thermistor 7 , and an inner wall surface 58 h connected to the other side d in the longitudinal direction faces the fourth terminal 9 .

[0063] The eighth wall portion 58 and the fifth wall portion 55 are opposed to each other, and the PTC thermistor 7 is provided between the eighth wall portion 58 and the fifth wall portion 55 in the vertical direction ef. Specifically, the PTC thermistor 7 is sandwiched between the inner wall surface portion 58f of the eighth wall portion 58 and the inner wall surface portion 55e of the fifth wall portion 55.

[0064] The eighth wall portion 58 and the sixth wall portion 56 are opposed to each other, and the fourth terminal 9 is provided between the eighth wall portion 58 and the sixth wall portion 56 in the vertical direction ef. Specifically, the fourth terminal 9 is sandwiched between the inner wall surface 58h of the eighth wall portion 58 and the inner wall surface 56e of the sixth wall portion 56.

[0065] The elastic parts 59 and 60 are made of resin, are thin plate-shaped, and have elasticity. The elastic parts 59 and 60 are located between the first wall part 51 and the second wall part 52 in the longitudinal direction cd.

[0066] The elastic portion 59 is bendable from the first wall portion 51 side to the second wall portion 52 side. In addition, the elastic portion 59 is provided between the first wall portion 51 and the choke coil 2 in the longitudinal direction cd.

[0067] Specifically, in the elastic portion 59, the side surface portion 59c facing one side c in the length direction faces the side surface portion 32d of the end portion 32 of the first terminal 3, and the side surface portion 59d facing the other side d in the length direction faces the side surface portion 2c of the choke coil 2 ( Figure 3 ).

[0068] That is, the choke coil 2 is provided between the side surface portion 59 d of the elastic portion 59 and the inner wall surface portion 52 c of the second wall portion 52 in the longitudinal direction cd.

[0069] The elastic part 59 has a hole 591 formed therein. The hole 591 is cut into a U-shaped shape with a long longitudinal length from the upper side a to the lower side b. The commutator side lead 23a is inserted into the hole 591 from the upper side a and is located at the bottom of the U-shaped shape. The commutator side lead 23a inserted into the hole 591 is led out from the elastic part 59 side to the first wall part 51 side ( Figure 3 ).

[0070] The width dimension (not shown) of the hole 591 in the vertical direction ef is larger than the dimension, ie, the diameter dimension, of the commutator-side lead 23a in the vertical direction ef.

[0071] The elastic portion 59 sandwiches the end portion 32 of the first terminal 3 between the elastic portion 59 and the inner wall surface 51d of the first wall portion 51. That is, the end portion 32 and the commutator-side lead 23a drawn out from the hole 591 are sandwiched and fixed between the inner wall surface 51d of the first wall portion 51 and the side surface 59c of the elastic portion 59 in the length direction cd. Thus, the commutator-side lead 23a is connected to the first terminal 3 ( Figure 3 ).

[0072] The elastic portion 60 is bendable from the second wall portion 52 side to the first wall portion 51 side.

[0073] Furthermore, the elastic portion 60 is provided between the choke coil 2 and the second wall portion 52 in the longitudinal direction cd.

[0074] Specifically, in the elastic portion 60 , the unillustrated side surface portion facing the other side d in the longitudinal direction faces the side surface portion 42 c of the end portion 42 of the second terminal 4 , and the unillustrated side surface portion facing the one side c in the longitudinal direction faces the side surface portion 2 d of the choke coil 2 .

[0075] A hole (not shown) is formed in the elastic portion 60, and the hole is cut into a U-shaped shape with a long longitudinal length from the upper side a to the lower side b. The external terminal side lead 23b is inserted into the hole from the upper side a and is located at the bottom of the U. The external terminal side lead 23b inserted into the hole is led from the elastic portion 60 side to the second wall portion 52 side.

[0076] The width dimension (not shown) of the hole in the vertical direction ef is larger than the dimension, ie, the diameter dimension, of the external terminal-side lead 23b in the vertical direction ef.

[0077] The elastic portion 60 sandwiches the end portion 42 of the second terminal 4 between the elastic portion 60 and the inner wall surface portion 52c of the second wall portion 52. That is, the end portion 42 and the external terminal side lead 23b drawn out from the hole of the elastic portion 60 are sandwiched and fixed between the inner wall surface portion 52c of the second wall portion 52 and the elastic portion 60 in the length direction cd. Thus, the external terminal side lead 23b and the second terminal 4 are connected.

[0078] The bracket recess 511 has a shape in which the bottom surface 5b of the bracket 5 is recessed from the upper side a toward the lower side b. The dimension of the bracket recess 511 recessed from the upper side a toward the lower side b, i.e., the depth dimension A, is smaller than the dimension of the choke coil 2 in the direction of the axis x, i.e., the height dimension B (A<B), so that a part of the choke coil 2 is embedded in the bracket recess 511. Specifically, the lower surface portion 2b of the lower side b of the choke coil 2 is embedded in the bracket recess 511 ( Figure 2 ).

[0079] The end portion 43 of the second terminal 4 is accommodated in the accommodation portion 512 a , and the accommodation portion 512 a communicates with a space outside the bracket 5 through the opening 513 a .

[0080] The end portion 93 of the fourth terminal 9 is accommodated in the accommodation portion 512 b , and the accommodation portion 512 b communicates with the space outside the bracket 5 through the opening portion 513 b .

[0081] External terminals (not shown) are inserted into the openings 513a and 513b. The external terminals inserted from the opening 513a are electrically connected to the choke coil 2 by contacting the end 43 of the second terminal 4 accommodated in the accommodation portion 512a.

[0082] Furthermore, the external terminal inserted from the opening 513 b comes into contact with the end 93 of the fourth terminal 9 accommodated in the accommodation portion 512 b , thereby being electrically connected to the PTC thermistor 7 .

[0083] The PTC thermistor 7 is provided on the other side f in the vertical direction, and is connected to the fourth terminal 9 on the other side d in the longitudinal direction.

[0084] The third terminal 8 includes a main body portion 81 extending in the vertical direction ef and an end portion 82 located on the PTC thermistor 7 side.

[0085] In the main body 81 , the side surface 81 c facing one longitudinal side c faces the surface 5 d of the bracket 5 that stands upward a and faces the other longitudinal side d, and the side surface 81 d facing the other longitudinal side d faces the commutator 10 .

[0086] The end portion 82 is bent at a substantially right angle from the other side f in the vertical direction of the main body portion 81 to the other side d in the longitudinal direction, and is in contact with the PTC thermistor 7 .

[0087] The fourth terminal 9 includes: a main body portion 91, which has a side portion 91e facing one side e in the vertical direction and a side portion 91f facing the other side f in the vertical direction; an end portion 92, which is bent at an obtuse angle from one side c in the length direction of the main body portion 91 toward one side e in the vertical direction; and an end portion 93, which is bent at a substantially right angle from the other side d in the length direction of the main body portion 91 toward one side e in the vertical direction.

[0088] The main body 91 of the fourth terminal 9 is fixed to the bracket 5 by a pin P2.

[0089] The end portion 92 of the fourth terminal 9 has a front end portion 92 g connected to the PTC thermistor 7 .

[0090] The end portion 93 of the fourth terminal 9 includes a bent portion 94 bent at a substantially right angle from the main body portion 91 toward one side e in the vertical direction, a front end portion 95 bent at an obtuse angle from the bent portion 94 toward one side c in the length direction, and a frontmost end portion 96 which is the frontmost end of the frontmost end portion 95. The frontmost end portion 96 is further bent from the frontmost end portion 95 toward the other side f in the vertical direction.

[0091] The fourth terminal 9 is sandwiched between the sixth wall portion 56 and the eighth wall portion 58 . Specifically, the side surface 91e of the main body portion 91 contacts the inner wall surface 58h of the eighth wall portion 58 , and the side surface 91f of the main body portion 91 contacts the inner wall surface 56e of the sixth wall portion 56 .

[0092] The commutator 10 includes: a conductor 11 disposed on one side e in the vertical direction; a conductor 12 disposed on the other side f in the vertical direction; a brush 13 fixed to the conductor 11; and a brush 14 fixed to the conductor 12.

[0093] One side 11a of the conductor 11 is connected to the brush 13, and the other side 11b of the conductor 11 is connected to the first terminal 3. Specifically, the conductor 11 is fixed to the side surface 33d of the end 33 of the first terminal 3 by the pin P3. Thus, the conductor 11 is connected to the first terminal 3.

[0094] One side 12a of the conductor 12 is connected to the brush 14, and the other side 12b of the conductor 12 is connected to the third terminal 8. Specifically, the conductor 12 is fixed to the side surface 81d of the main body 81 of the third terminal 8 by the pin P4.

[0095] In the motor 1 of the present embodiment, the choke coil 2 is located between the elastic portion 59 and the second wall portion 52 in the longitudinal direction cd, the first terminal 3 is sandwiched between the first wall portion 51 and the elastic portion 59 in the longitudinal direction cd, and the commutator side lead 23a is led from the elastic portion 59 side to the first wall portion 51 side. In addition, the second terminal 4 is sandwiched between the second wall portion 52 and the elastic portion 60 in the longitudinal direction cd, and the external terminal side lead 23b is led from the elastic portion 60 side to the second wall portion 52 side. Therefore, the choke coil 2, the commutator side lead 23a, and the external terminal side lead 23b are not close to each other, thereby suppressing the propagation of electrical noise (for example, low-frequency current or high-frequency current) blocked by the choke coil 2 to the commutator side lead 23a and the external terminal side lead 23b, thereby suppressing the reduction of the electrical noise removal efficiency.

[0096] In the motor 1 of the present embodiment, the elastic portion 59 can be bent from the first wall portion 51 side to the second wall portion 52 side. In addition, the elastic portion 60 can be bent from the second wall portion 52 side to the first wall portion 51 side. Therefore, the elastic portion 59 is bent toward the choke coil 2 side to press the choke coil 2 toward the second wall portion 52 side, and the elastic portion 60 is bent toward the choke coil 2 side to press the choke coil 2 toward the first wall portion 51 side, so that the choke coil 2 can be fixed to the bracket 5.

[0097] Furthermore, in the motor 1 of this embodiment, the first terminal 3 and the commutator lead 23a are sandwiched between the first wall portion 51 and the elastic portion 59 in the longitudinal direction cd. Therefore, the commutator lead 23a and the first terminal 3 can be connected and fixed at the same time.

[0098] In the motor 1 of this embodiment, the second terminal 4 and the external terminal side lead 23b are sandwiched between the second wall portion 52 and the elastic portion 60 in the longitudinal direction cd. Therefore, the external terminal side lead 23b and the second terminal 4 can be connected and fixed at the same time.

[0099] As described above, the motor 1 according to the present embodiment can suppress a decrease in the efficiency of removing electrical noise.

[0100] Next, a motor according to a modified example of the present invention will be described.

[0101] In the description of this modification, components or parts having the same functions and structures as those in the above-mentioned embodiment are denoted by the same reference numerals as in the above-mentioned embodiment, and their detailed description is omitted (however, the addition of special description is not limited to this).

[0102] Figure 4 This is a side view schematically showing an extracted area around the choke coil 2 of the motor 1 according to the first modified example of the present invention. Figure 5 It is an enlarged cross-sectional view showing the connection between the first terminal 3 and the commutator-side lead 23 a of the motor 1 according to the first modified example of the present invention.

[0103] In the first modification, the structures of the first terminal 3 and the second terminal 4 are the same as those in the above embodiment, but the connection between the first terminal 3 and the commutator-side lead 23a and the connection between the second terminal 4 and the external terminal-side lead 23b are different from those in the above embodiment.

[0104] like Figure 4As shown, a recess 47 (hereinafter, the recess 47 of the second terminal 4 is referred to as "second terminal recess 47") is formed on the upper side a of the main body 41 of the second terminal 4. The external terminal side lead 23b is engaged in the second terminal recess 47.

[0105] Specifically, in the second terminal recess 47, in order to increase the contact area between the second terminal 4 and the external terminal side lead 23b, the depth dimension C, which is the dimension of the recess from the upper side a to the lower side b, is greater than the diameter dimension D, which is the dimension in the vertical direction of the external terminal side lead 23b (C>D). Alternatively, the depth dimension C may be equal to the diameter dimension D (C=D).

[0106] In addition, in order to increase the contact area between the second terminal 4 and the external terminal side lead 23b, the dimension of the second terminal recess 47 in the direction of the arrow cd, i.e., the width dimension E, is equal to the diameter dimension D of the external terminal side lead 23b (D=E), or is smaller than the diameter dimension D of the external terminal side lead 23b (D>E).

[0107] The second terminal recess 47 is connected to the external terminal side lead 23b by contacting the outer periphery of the external terminal side lead 23b. When the width dimension E is smaller than the diameter dimension D of the external terminal side lead 23b (D>E), the external terminal side lead 23b is pressed into the second terminal recess 47 and fixed.

[0108] like Figure 5 As shown, a recess 37 is formed on the upper side a of the end 32 of the first terminal 3. The recess 37 is recessed from the upper side a to the lower side b (hereinafter, the recess 37 of the first terminal 3 is referred to as "first terminal recess"). The commutator-side lead 23a is engaged in the first terminal recess 37.

[0109] Specifically, in order to increase the contact area between the first terminal 3 and the commutator-side lead 23a, the first terminal recess 37 has a dimension from the upper side a to the lower side b, i.e., a depth dimension F, which is greater than a dimension in the vertical direction of the commutator-side lead 23a, i.e., a diameter dimension G (F>G). Alternatively, the depth dimension F may be equal to the diameter dimension F (F=G).

[0110] Similarly, in order to increase the contact area between the first terminal 3 and the commutator side lead 23a, the dimension of the first terminal recess 37 in the direction of arrow ef, i.e., the width dimension not shown in the figure, is equal to the diameter dimension G of the commutator side lead 23a, or is smaller than the diameter dimension G of the commutator side lead 23a.

[0111] The first terminal recess 37 is connected to the commutator-side lead 23a by contacting the outer periphery of the commutator-side lead 23a. When the width dimension is smaller than the diameter dimension G of the commutator-side lead 23a, the commutator-side lead 23a is pressed into the first terminal recess 37 and fixed.

[0112] In the motor 1 according to the first modification, the commutator-side lead 23a is engaged with the first terminal recess 37 formed in the first terminal 3. Therefore, even when the diameter D of the commutator-side lead 23a is large and it is difficult to clamp the commutator-side lead 23a between the first wall portion 51 and the elastic portion 59 as in the above-described embodiment, the commutator-side lead 23a and the first terminal 3 can be connected.

[0113] Furthermore, the external terminal side lead 23b is engaged with the second terminal recess 47 formed in the second terminal 4. Therefore, even when the diameter dimension F of the external terminal side lead 23b is large and it is difficult to clamp the external terminal side lead 23b between the second wall portion 52 and the elastic portion 60 as in the above-mentioned embodiment, the external terminal side lead 23b and the second terminal 4 can be connected.

[0114] Figure 6 1 is a side view schematically showing an area around a terminal member 203 of a motor 201 according to a second modification of the present invention. Figure 7 It is a side view showing a terminal member 203 of a motor 201 according to a second modification of the present invention.

[0115] In the second modification, a motor 201 does not include the choke coil 2 but has a terminal member 203 , which is different from the motor 1 of the above embodiment.

[0116] like Figure 6 and Figure 7 As shown, the terminal member 203 of the motor 201 in the second modification has a connecting portion 213 that connects the first terminal 3 and the second terminal 4 (a pair of terminals).

[0117] The terminal member 203 has a first mark and a second mark. The first mark is represented by a mark 214 a formed between the first terminal 3 and the connecting portion 213 , and the second mark is represented by a mark 214 b formed between the second terminal 4 and the connecting portion 213 .

[0118] The connecting portion 213 is disposed opposite to the bracket recess 511 of the bracket 5. That is, the connecting portion 213 connects the upper side a of the first terminal 3 and the upper side a of the second terminal 4 and is disposed on the upper side a of the bracket recess 511 for fixing the first terminal 3 and the second terminal 4 to the bracket 5.

[0119] The mark 214 a is a mark used as a marker when the first terminal 3 and the connecting portion 213 are cut apart, and the mark 214 b is a mark used as a marker when the second terminal 4 and the connecting portion 213 are cut apart.

[0120] The marks 214a and 214b in this modification are thin-walled portions with a straight shape and a thin thickness. By cutting the terminal member 203 at the marks 214a and 214b, the connecting portion 213 can be separated from the first terminal 3 and the second terminal 4. In addition, the marks 214a and 214b can also be simple marks drawn with a pen, etc. In this case, the parts of the marks 214a and 214b can be cut using other tools. In addition, the marks 214a and 214b can also be cuts or perforations formed on the terminal member 203, etc.

[0121] In the motor 201 according to the second modification, marks 214a and 214b are formed on the connection portion 213 connecting the first terminal 3 and the second terminal 4. Therefore, when a choke coil is provided in the motor 201, the choke coil can be arranged in the bracket recess 511 by cutting the first terminal 3 and the connection portion 213 and the second terminal 4 and the connection portion 213 along the marks 214a and 214b. That is, a motor 201 that can cope with both the case where a choke coil is not provided and the case where a choke coil is provided can be provided.

[0122] The terminal member 203 involved in the second variant can be used in the above-mentioned embodiment and the above-mentioned first variant. That is, the first terminal 3 and the second terminal 4 of the terminal member 203 are the same members as the first terminal 3 and the second terminal 4 of the above-mentioned embodiment and the above-mentioned first variant, and are cut from the connecting portion 213 to become independent terminals. Therefore, the terminal member 203 can cope with any one of the above-mentioned embodiment, the above-mentioned first variant and this second variant.

[0123] The first terminal 3 according to the above embodiment also has a first terminal recess ( Figure 6 The second terminal 4 also has a second terminal recess ( Figure 6 That is, the first terminal 3 and the second terminal 4 in the above embodiment, the above first variant and the second variant are the same components, and the terminal component 203 can be directly used or the connecting portion 213 can be cut and used according to different usage forms.

[0124] The motor of the present invention has been described above by citing preferred embodiments, but the motor of the present invention is not limited to the configurations of the above embodiments and modified examples. For example, in the motor 1 of the above embodiment, the commutator-side lead 23a is sandwiched between the first wall portion 51 and the elastic portion 59, and the external terminal-side lead 23b is sandwiched between the second wall portion 52 and the elastic portion 60. However, only one of the commutator-side lead 23a and the external terminal-side lead 23b may be engaged with the first terminal recess 37 as in the first modified example. That is, the commutator-side lead 23a may be sandwiched between the first wall portion 51 and the elastic portion 59, and the external terminal-side lead 23b may be engaged with the second terminal recess 47. In addition, the commutator-side lead 23a may be engaged with the first terminal recess 37, and the external terminal-side lead 23b may be sandwiched between the second wall portion 52 and the elastic portion 60.

[0125] Furthermore, those skilled in the art can appropriately modify the motor of the present invention based on conventionally known knowledge, and the modified motor is naturally included in the scope of the present invention as long as it still has the configuration of the present invention.

[0126] Description of Reference Numerals

[0127] 1 motor; 2 choke coil; 3 first terminal; 4 second terminal; 5 bracket; 6 housing; 7 PTC thermistor; 8 third terminal; 9 fourth terminal; 10 commutator; 11, 12 conductor; 13, 14 brush; 21 core; 22 coil; 23a commutator side lead; 23b external terminal side lead; 31 main body; 32 end; 32c, 32d side; 33 end; 33c, 33d side; 35 front end; 37 first terminal recess; 41 main body; 41b lower end; 41e, 41f side; 42 end; 42c side; 43 end; 44 bent portion; 45 front end part; 46 the front end portion; 47 the second terminal recess; 51 the first wall portion; 52 the second wall portion; 53 the third wall portion; 54 the fourth wall portion; 55 the fifth wall portion; 56 the sixth wall portion; 57 the seventh wall portion; 58 the eighth wall portion; 59 the elastic portion; 81 the main body portion; 81c, 81d the side portions; 82 the end portions; 91 the main body portion; 92 the end portions; 93 the end portions; 94 the bent portion; 95 the front end portion; 96 the front end portion; 201 the motor; 203 the terminal member; 213 the connecting portion; 214a, 214b the markings; 511 the bracket recess; 512a, 512b the accommodating portion; 513a, 513b the opening portions; 591 the hole.

Claims

1. A motor, comprising: commutator; Choke coil; a terminal to which a lead wire extending from the choke coil is electrically connected; a bracket having two wall portions, an elastic portion, a bottom portion, and three outer wall portions, wherein the elastic portion is located between the two wall portions in the axial direction of the choke coil, and a housing accommodating the bracket, The shell is in contact with three outer wall surfaces of the bracket, The commutator is provided between two of the three outer wall surface portions, The choke coil fixed to the bottom surface of the bracket is located between the elastic portion and one of the two wall portions in the axial direction. The terminal is sandwiched between the other of the two wall portions and the elastic portion in the axial direction. The lead wire is led from the elastic portion side to the other wall portion side.

2. The motor according to claim 1, wherein: The elastic portion is bendable from the one wall portion side to the other wall portion side.

3. The motor according to claim 1 or 2, wherein: The terminal and the lead wire are sandwiched between the one wall portion and the elastic portion in the axial direction.

4. The motor according to claim 1 or 2, wherein: The lead wire is engaged with the recessed portion of the terminal.

5. The motor according to claim 1 or 2, wherein: The bracket includes two other wall portions facing each other, In the radial direction of the choke coil, the choke coil is located between the other two wall portions.

6. The motor according to claim 1 or 2, wherein: A recess is formed on the bottom of the bracket. A portion of the choke coil is embedded in the recess.

7. The motor according to claim 1 or 2, wherein: The bracket includes a receiving portion for receiving the terminal and an opening connecting the receiving portion with an external space. The terminal can be in contact with an external terminal inserted into the opening.

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