Electric connection structure for rotary electric connection

Abstract

An electric connection structure for rotary electric connection belongs to the technical field of electric connection, the rotary electric connection is used for rotary equipment, and the rotary equipment comprises a fuselage, an aircraft head, a motor shell, an upper fixing cover, a lower fixing cover, a circuit board and a motor; the motor is electrically connected with the circuit board through an electric connection structure; the electric connection structure comprises two dynamic electric contact pieces and two static electric contact pieces. The dynamic electric contact piece comprises a dynamic electric contact piece contact end and a dynamic electric contact piece connection end; the electrostatic contact piece comprises an electrostatic contact piece contact end and an electrostatic contact piece connecting end; the contact end of the dynamic electric contact piece is arranged above the lower bottom surface of the motor shell; the connecting ends of the two dynamic electric contact pieces are electrically connected with the positive electrode and the negative electrode of the rear end of the motor respectively; the connecting ends of the two static electric contact pieces are electrically connected with the positive electrode and the negative electrode of the front end of the circuit board respectively; the beneficial effects of the utility model are that the rotary electric connection structure is neat in internal structure and stable in connection, and avoids off-line shutdown.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electric connection structure, in particular to an electric connection structure for rotary electric connection, and belongs to the technical field of electric connection. BACKGROUND

[0002] Rotary equipment such as a rotary hair clipper, the aircraft head part of the rotary hair clipper can turn back and forth left and right relative to the body part, and is convenient to operate, when cutting hair on some parts such as the back of the ear, the neck, the forehead and the like, only the aircraft head part is turned, the ideal effect can be achieved. However, the electric connection between the circuit board and the motor of the rotary hair clipper is usually connected by an electric wire, the internal structure is disorderly, the connection is unstable, and the phenomenon of wire disconnection and machine stoppage is easily caused. SUMMARY

[0003] The utility model discloses a kind of electric connection structures for rotary electric connection, and the electric connection between the motor's dynamic electric contact piece connecting end and circuit board can be not connected by electric wire, internal structure is neat, connection is stable, to avoid the purpose of wire disconnection and machine stoppage.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: an electric connection structure for rotary electric connection, the rotary electric connection is used for rotary equipment, the rotary equipment includes a body and an aircraft head, the aircraft head includes a lower motor housing and an upper transmission component; the body includes an upper cover, a lower cover, an upper fixed cover and a lower fixed cover, and an electric circuit board is arranged between the upper cover and the lower cover of the body; the upper fixed cover and the lower fixed cover are both circular, the upper fixed cover is arranged at the front end of the upper cover, and the lower fixed cover is arranged at the front end of the lower cover; a concave ring is arranged at the center of the lower fixed cover; the motor housing is a waist drum-shaped body, which is large in the middle and small at both ends, and includes an upper top surface and a lower bottom surface; an angle limiting convex disc is arranged at the center of the upper top surface, and a convex ring is arranged at the center of the lower bottom surface; the motor housing is arranged between the upper fixed cover and the lower fixed cover; the concave ring is fitted on the convex ring from bottom to top with a gap; by manually operating and swinging the motor housing, the aircraft head can be turned back and forth left and right relative to the body; an electric motor is arranged in the motor housing.

[0005] The electric motor is electrically connected to the electric circuit board through an electric connection structure; the electric connection structure includes two dynamic electric contact pieces and two static electric contact pieces arranged symmetrically left and right; the dynamic electric contact piece includes a dynamic electric contact piece contact end and a dynamic electric contact piece connecting end; a downward protruding portion is arranged at the front end of the dynamic electric contact piece contact end; a dynamic electric contact piece contact point is arranged in the middle of the protruding portion; the static electric contact piece includes a static electric contact piece contact end and a static electric contact piece connecting end.

[0006] The dynamic electricity contact piece contact end is arranged above the lower bottom surface of the motor shell, and each of the two dynamic electricity contact piece contact ends is provided with a plurality of fixing points near the bending part, and the dynamic electricity contact piece contact end is fixedly connected with the lower bottom surface of the motor shell through the fixing points; the two sides of the convex ring of the lower bottom surface of the motor shell are each provided with a rectangular through hole, and the convex part of the dynamic electricity contact piece contact end protrudes from the rectangular through hole to below the lower bottom surface of the motor shell; the dynamic electricity contact piece contact end is arranged horizontally, the dynamic electricity contact piece connecting end is arranged vertically, and the bending part between the dynamic electricity contact piece contact end and the dynamic electricity contact piece connecting end is vertically connected.

[0007] The static electricity contact piece contact end is arranged horizontally, the static electricity contact piece connecting end is arranged vertically, and the bending part between the static electricity contact piece contact end and the static electricity contact piece connecting end is vertically connected; the two static electricity contact piece contact ends enclose a circle, and each of the front end and the rear end of the two static electricity contact piece contact ends is provided with a fixing point; the static electricity contact piece contact end is arranged above the lower fixed cover, and the static electricity contact piece contact end is fixedly connected with the lower fixed cover through the fixing point.

[0008] The two dynamic electricity contact piece connecting ends are respectively electrically connected with the positive and negative poles of the rear end of the motor, and the two static electricity contact piece connecting ends are respectively electrically connected with the positive and negative poles of the front end of the circuit board.

[0009] The two dynamic electricity contact piece contact ends are respectively arranged above the two static electricity contact piece contact ends; the dynamic electricity contact piece contact point is in contact and sliding electrical connection with the static electricity contact piece contact end; when the aircraft head is manually rotated to the left or to the right, the dynamic electricity contact piece is rotated to the left or to the right, and the two dynamic electricity contact piece contact points slide on the circle enclosed by the two static electricity contact pieces, and in the sliding process, the dynamic electricity contact piece contact point and the static electricity contact piece contact end are always in electrical connection; the dynamic electrical contact piece contact point and the static electricity contact piece between the dynamic electrical contact piece contact point and the static electricity contact piece are connected in a dynamic electrical connection structure, so that the electrical connection between the dynamic electrical contact piece and the motor does not need to be connected by a wire, and is stable and reliable, avoiding the phenomenon of line disconnection and shutdown.

[0010] The rotation angle of the dynamic electricity contact piece is 0 to 60 degrees.

[0011] Each of the two dynamic electricity contact piece contact ends is provided with two fixing points near the bending part, and the dynamic electricity contact piece contact end is provided with a horizontal bending part at the rear part, the included angle of the bending part is 129-131°, and the two fixing points are arranged on the two sides of the bending part, so that the four fixing points of the two dynamic electricity contact pieces are matched with the circular lower bottom surface of the motor shell.

[0012] When the dynamic electricity contact piece rotates to the left, the two dynamic electricity contact piece contact points slide in the counterclockwise direction on the circle surrounded by the two static electricity contact pieces, the relative positions of the two dynamic electricity contact pieces remain unchanged, the contact point of the right dynamic electricity contact piece slides to the left and up along the contact end of the right static electricity contact piece, and the contact point of the left dynamic electricity contact piece slides to the right and down along the contact end of the left static electricity contact piece, and the dynamic electricity contact piece contact point and the static electricity contact piece contact end are always in electrical connection; when the dynamic electricity contact piece rotates to the right, the rotating condition is the same as that when rotating to the left, the left is changed to the right, the counterclockwise is changed to the clockwise, the up is changed to the down, and the down is changed to the up.

[0013] Compared with the prior art, the utility model discloses the beneficial effects are: set up left, right symmetry 2 dynamic electricity contact piece and 2 static electricity contact piece that set up, the dynamic electricity contact piece contact end downward protruding portion's middle is provided with dynamic electricity contact piece contact point, dynamic electricity contact piece contact point and static electricity contact piece contact end contact, constitute the sliding electrical connection structure, make dynamic electricity contact piece connection end and the electrical connection between motor not use the wire connection, stable and reliable, avoided the phenomenon of off-line shutdown. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is: a rotary hair clipper perspective view;

[0015] Figure 2 It is: a rotary hair clipper perspective view (without motor shell and transmission part);

[0016] Figure 3 It is: a rotary hair clipper body perspective view;

[0017] Figure 4 It is: the motor shell bottom view direction perspective enlarged view;

[0018] Figure 5 It is: 2 dynamic electricity contact piece and 2 static electricity contact piece combination front view enlarged view;

[0019] Figure 6 It is: 2 dynamic electricity contact piece and 2 static electricity contact piece combination perspective enlarged view;

[0020] Figure 7 It is: Figure 2 the enlarged view of A of;

[0021] Figure 8 It is: the aircraft head lower part front view enlarged view (without motor);

[0022] Figure 9 It is: the lower cover front end, lower fixed cover, 2 dynamic electricity contact piece and 2 static electricity contact piece combination perspective enlarged view;

[0023] Figure 10is: 2 dynamic contact pieces and 2 static contact pieces combination front view enlarged view (2 dynamic contact pieces turn 45° to left);

[0024] Figure 11 is: dynamic contact piece and static contact piece combination left view enlarged view.

[0025] Explanation of reference signs: fuselage 1, aircraft head 2, motor shell 3, upper top surface 301, lower bottom surface 302, rectangular through hole 303, convex ring 304, transmission component 4, upper cover 5, lower cover 6, upper fixed cover 7, lower fixed cover 8, concave ring 801, circuit board 9, motor 10, dynamic contact piece 11, dynamic contact piece contact end 1101, dynamic contact piece connecting end 1102, dynamic contact piece contact point 1103, static contact piece 12, static contact piece contact end 1201, static contact piece connecting end 1202, fixed point 13. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The left, right, front and back directions are for the convenience of description, and can be changed in practice. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] As shown in Figures 1 to 11 , an electrical connection structure for a rotary electrical connection for a rotary device, such as a rotary hair clipper as shown in Figure 1 , Figure 2 and Figure 3 , the rotary device comprises a fuselage 1 and an aircraft head 2, the aircraft head 2 comprising a lower motor housing 3 and an upper transmission component 4; the fuselage 1 comprises an upper cover 5, a lower cover 6, an upper fixed cover 7 and a lower fixed cover 8, the upper cover 5 and the lower cover 6 of the fuselage 1 being provided with a circuit board 9 therebetween; the upper fixed cover 7 and the lower fixed cover 8 are both circular, the upper fixed cover 7 being arranged at the front end of the upper cover 5, and the lower fixed cover 8 being arranged at the front end of the lower cover 6; the lower fixed cover 8 is provided with a concave ring 801 at the center thereof; as shown in Figure 1 , Figure 3 and Figure 4As shown, the motor housing 3 is a waist drum-shaped body, large in the middle and small at both ends, and includes an upper top surface 301 and a lower bottom surface 302. The center of the upper top surface 301 is provided with an angular limiting convex disc, and the center of the lower bottom surface 302 is provided with a convex ring 304. The motor housing 3 is arranged between the upper fixed cover 7 and the lower fixed cover 8. The concave ring 801 is sleeved on the convex ring 304 from bottom to top in a clearance fit. By manually operating and swinging the motor housing 3, the aircraft head 2 can be rotated back and forth relative to the fuselage 1 left and right. The motor 10 is arranged in the motor housing 3.

[0028] As shown in Figure 4 , Figure 5 and Figure 6 , the motor 10 is electrically connected with the circuit board 9 through an electrical connection structure. The electrical connection structure includes two dynamic contact pieces 11 and two static contact pieces 12 arranged symmetrically left and right. The dynamic contact piece 11 includes a dynamic contact piece contact end 1101 and a dynamic contact piece connecting end 1102. The front end of the dynamic contact piece contact end 1101 is provided with a downward protruding portion, and the middle of the protruding portion is provided with a dynamic contact piece contact point 1103. The static contact piece 12 includes a static contact piece contact end 1201 and a static contact piece connecting end 1202.

[0029] As shown in Figure 4 , Figure 6 and Figure 8 , the dynamic contact piece contact end 1101 is arranged above the lower bottom surface 302 of the motor housing 3. Two dynamic contact piece contact ends 1101 are each provided with two fixed points 13 near the bending portion. The dynamic contact piece contact end 1101 is fixedly connected with the lower bottom surface 302 of the motor housing 3 through the two fixed points 13. The convex ring 304 of the lower bottom surface 302 of the motor housing 3 is provided with one rectangular through hole 303 on each side. The protruding portion of the dynamic contact piece contact end 1101 protrudes from the rectangular through hole 303 to below the lower bottom surface 302 of the motor housing 3. The dynamic contact piece contact end 1101 is horizontally arranged, the dynamic contact piece connecting end 1102 is vertically arranged, and the bending portion between the dynamic contact piece contact end 1101 and the dynamic contact piece connecting end 1102 is vertically connected.

[0030] As shown in Figure 6 and Figure 9 , the static contact piece contact end 1201 is horizontally arranged, the static contact piece connecting end 1202 is vertically arranged, and the bending portion between the static contact piece contact end 1201 and the static contact piece connecting end 1202 is vertically connected. Two static contact piece contact ends 1201 form a circle, and each of the front and rear ends of the two static contact piece contact ends 1201 is provided with one fixed point 13. The static contact piece contact end 1201 is arranged above the lower fixed cover 8 and is fixedly connected with the lower fixed cover 8 through the fixed point 13.

[0031] As Figure 7 shown, 2 dynamic electric contact piece connection end 1102 respectively with the positive and negative electrode of the motor 10 rear end electric connection, 2 static electric contact piece connection end 1202 respectively with the positive and negative electrode of the circuit board 9 front end electric connection;

[0032] As Figure 6 , Figure 10 and Figure 11 shown, 2 dynamic electric contact piece contact end 1101 respectively set in 2 static electric contact piece contact end 1201 above; the dynamic electric contact piece contact point 1103 and static electric contact piece contact end 1201 contact, sliding electric connection; when manually rotating the aircraft head 2 to left or right, dynamic electric contact piece 11 rotates left or right, 2 dynamic electric contact piece contact point 1103 on the circle surrounded by 2 static electric contact piece 12 sliding, in the sliding process, dynamic electric contact piece contact point 1103 and static electric contact piece contact end 1201 is always in electric connection state; this dynamic electric contact piece contact point 1103 and static electric contact piece 12 between the dynamic electric connection structure makes the electric connection between dynamic electric contact piece 11 and motor 10 without wire connection, stable and reliable, avoid the phenomenon of off-line downtime.

[0033] As Figure 10 shown, the dynamic electric contact piece 11 rotation angle α is 45 °.

[0034] As Figure 6 and Figure 10 shown, the dynamic electric contact piece contact end 1101 rear is provided with a horizontal direction bending, the included angle β of the bending is 129-131 °, 2 fixed points 13 are respectively arranged on the two sides of the bending, so that 4 fixed points 13 of 2 dynamic electric contact pieces 11 match with the circular shape lower bottom surface 302 of the motor shell 3.

[0035] As Figure 10 shown, when dynamic electric contact piece 11 rotates left, 2 dynamic electric contact piece contact point 1103 on the circle surrounded by 2 static electric contact piece 12 counterclockwise sliding, 2 dynamic electric contact piece 11 relative position does not change, right dynamic electric contact piece contact point 1103 along the right static electric contact piece contact end 1201 left up sliding, left dynamic electric contact piece contact point 1103 along the left static electric contact piece contact end 1201 right down sliding, dynamic electric contact piece contact point 1103 and static electric contact piece contact end 1201 is always in electric connection state; when dynamic electric contact piece rotates right, the same as rotating left, left instead of right, counterclockwise instead of clockwise, up instead of down, down instead of up.

[0036] The above-described embodiments are only the preferred embodiments of the present application, and the common changes and replacements made by those skilled in the art within the technical scheme of the present application should be included in the protection scope of the present application.

Claims

1. An electrical connection structure for a rotary electrical connection for a rotary device, the rotary device comprising a body and a head, the head comprising a lower motor housing and an upper transmission part; the body comprising an upper cover, a lower cover, an upper fixed cover, a lower fixed cover, the upper cover and the lower cover of the body being provided with a circuit board therebetween; the upper fixed cover and the lower fixed cover are both circular, the upper fixed cover is arranged at the front end of the upper cover, and the lower fixed cover is arranged at the front end of the lower cover; the lower fixed cover is provided with a concave ring at the center thereof; the motor housing is a waist drum-shaped body, which is large in the middle and small at both ends, the motor housing comprises an upper top surface and a lower bottom surface, and the lower bottom surface is provided with a convex ring at the center thereof; the motor housing is arranged between the upper fixed cover and the lower fixed cover; the concave ring is fitted on the convex ring from bottom to top in a clearance fit; a motor is arranged in the motor housing; characterized in that: the motor is electrically connected with the circuit board through the electrical connection structure; the electrical connection structure comprises two dynamic contact pieces and two static contact pieces arranged symmetrically left and right; the dynamic contact piece comprises a dynamic contact piece contact end and a dynamic contact piece connecting end, the dynamic contact piece contact end is provided with a downward protruding portion at the front end thereof, and the protruding portion is provided with a dynamic contact piece contact point in the middle thereof; the static contact piece comprises a static contact piece contact end and a static contact piece connecting end; the dynamic contact piece contact end is arranged above the lower bottom surface of the motor housing, a plurality of fixing points are arranged near the bending part of each of the two dynamic contact piece contact ends, and the dynamic contact piece contact end is fixedly connected with the lower bottom surface of the motor housing through the fixing points; the two sides of the convex ring of the lower bottom surface of the motor housing are each provided with a rectangular through hole, and the protruding portion of the dynamic contact piece contact end protrudes downward from the rectangular through hole to the lower bottom surface of the motor housing; the dynamic contact piece contact end is arranged horizontally, the dynamic contact piece connecting end is arranged vertically, and the bending part between the dynamic contact piece contact end and the dynamic contact piece connecting end is a vertical connection; the static contact piece contact end is arranged horizontally, the static contact piece connecting end is arranged vertically, and the bending part between the static contact piece contact end and the static contact piece connecting end is a vertical connection; the two static contact piece contact ends enclose a circle, and each of the front and rear ends of the two static contact piece contact ends is provided with a fixing point; the static contact piece contact end is arranged above the lower fixed cover, and the static contact piece contact end is fixedly connected with the lower fixed cover through the fixing point; the two dynamic contact piece connecting ends are respectively electrically connected with the positive and negative poles at the rear end of the motor, and the two static contact piece connecting ends are respectively electrically connected with the positive and negative poles at the front end of the circuit board; the two dynamic contact piece contact ends are respectively arranged above the two static contact piece contact ends; the dynamic contact piece contact point is in contact and sliding electrical connection with the static contact piece contact end; when the head is manually rotated to the left or to the right, the dynamic contact piece is rotated to the left or to the right accordingly, the two dynamic contact piece contact points slide on the circle enclosed by the two static contact piece contact ends, and in the sliding process, the dynamic contact piece contact point and the static contact piece contact end are always in electrical connection. The rotation angle of the dynamic contact piece is 0-60 degrees.

2. An electrical connection structure for a rotary electrical connection according to claim 1, characterized in that: ​ 3. An electrical connection structure for a rotary electrical connection according to claim 1, characterized in that: Two fixing points are arranged at the contact end of the two dynamic contact pieces near the bending part, and a horizontal bending part with an included angle of 129-131° is arranged at the rear of the contact end of the dynamic contact pieces, and the two fixing points are arranged at the two sides of the bending part, so that the four fixing points of the two dynamic contact pieces are matched with the lower circular bottom surface of the motor shell.

4. An electrical connection structure for a rotary electrical connection according to claim 1, characterized in that: When the dynamic contact pieces rotate to the left, the two dynamic contact piece contact points slide counterclockwise on the circle surrounded by the two static contact pieces, the relative positions of the two dynamic contact pieces remain unchanged, the right dynamic contact piece contact point slides leftward and upward along the right static contact piece contact end, and the left dynamic contact piece contact point slides rightward and downward along the left static contact piece contact end, and the dynamic contact piece contact point and the static contact piece contact end are always in electrical connection; When the dynamic contact pieces rotate to the right, the rotation condition is the same as that when rotating to the left, the left is changed to the right, the counterclockwise is changed to the clockwise, the upward is changed to the downward, and the downward is changed to the upward.

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