Output assembly and motor

Abstract

The utility model discloses an output assembly and a motor, and belongs to the technical field of motors, the output assembly comprises a support, and a positive electrode lead sheet and a negative electrode lead sheet which are arranged in the support, a protection circuit is electrically connected between the positive electrode lead sheet and the negative electrode lead sheet, and when transient overvoltage occurs, the protection circuit is switched on; a protective cover is installed on the rear end face of the motor rear end cover, the output assembly is installed on the protective cover, the two output terminals of the motor are electrically connected with a positive electrode lead piece and a negative electrode lead piece of the output assembly respectively, and the output assembly can absorb energy and protect internal components and a rear-stage load of the motor from being damaged due to voltage impact when the voltage of a system circuit fluctuates. The output assembly is simple in structure, high in reliability, modularized in arrangement and convenient to replace, and the service life of the motor and the service life of the load can be prolonged conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, concretely relates to an output assembly and motor. BACKGROUND

[0002] BSG (Belt-Driven Starter Generator) motor is located at the front end of engine, is connected with engine through the mode of belt drive, and gives consideration to starting and power generation.The output end of conventional BSG motor 3 has no protection circuit, and output terminal 33 is directly connected with load, when the output end voltage fluctuates, it is easy to cause the impact to motor internal components and load, simultaneously, the output mode of motor 3 is rear output, when the customer needs side output, it will bring inconvenience for customer wiring, such as shown in the drawing. Figure 5 SUMMARY

[0003] The utility model wants to solve technical problem, provide an output assembly and motor, can absorb high voltage energy when system circuit voltage fluctuates, protect motor internal components and rear stage load from being damaged by voltage impact, prolong the service life of electronic components.

[0004] To solve the above technical problem, the technical scheme of the utility model is:

[0005] An output assembly, including support and the positive tab and negative tab of setting in the support, the positive tab and the negative tab between electric connection have protection circuit, when transient overvoltage occurs, the protection circuit conduction absorbs energy.

[0006] Further, the protection circuit includes a plurality of diodes connected between the positive tab and the negative tab, the anode of the diode is electrically connected to the negative tab, and the cathode is electrically connected to the positive tab.

[0007] Further, the diode includes a positive diode and a negative diode, the positive diode is press-fitted to the positive tab, and the negative diode is press-fitted to the negative tab, and the positive diode and the negative diode are connected by a connecting tab.

[0008] Further, the support is provided with a cover plate covering the diode inside.

[0009] Further, the positive tab is horizontally arranged on the upper surface of the support, the support is vertically provided with a positive terminal screw, the upper end of the positive terminal screw extends out of the upper surface of the support and passes through the terminal hole of the positive tab, and the lower end of the positive terminal screw extends out of the lower surface of the support and is provided with a terminal hole.

[0010] ​Further, the lower end of the negative tab is extended from the lower surface of the bracket and is provided with a wire hole, and the upper end of the negative tab is extended from the upper surface of the bracket and is provided with a wire hole, the upper surface of the bracket is provided with a through hole coaxially arranged with the wire hole, and a negative wire screw is arranged through the through hole and the wire hole and is electrically connected with the negative tab.

[0011] Further, the upper surface of the bracket between the upper end of the positive wire screw and the wire hole of the upper end of the negative tab is provided with an isolation plate.

[0012] Further, the lower end of the bracket is provided with two mounting holes in parallel, and the wire hole of the lower end of the positive wire screw and the wire hole of the lower end of the negative tab are coaxially arranged in the two mounting holes respectively.

[0013] Further, the bracket is vertically provided with a screw hole for mounting a fastening screw.

[0014] The motor comprises a front end cover, a rear end cover, a stator and a rotor installed in a space formed by the front end cover and the rear end cover, a shroud is installed on the rear end surface of the rear end cover, the output assembly is installed on the shroud, and two output terminals of the motor are electrically connected with the positive tab and the negative tab of the output assembly respectively.

[0015] After the above technical scheme is adopted, the motor has the following beneficial effects:

[0016] Since the output assembly comprises the bracket and the positive tab and the negative tab arranged in the bracket, the protection circuit is electrically connected between the positive tab and the negative tab, the protection circuit is turned on to absorb high voltage energy when transient overvoltage occurs, and the sensitive electronic components connected with the output assembly are prevented from being damaged, the output assembly has a simple structure, high reliability, modularization and convenient replacement.

[0017] Since the motor comprises the front end cover, the rear end cover, the stator and the rotor installed in the space formed by the front end cover and the rear end cover, the shroud is installed on the rear end surface of the rear end cover, the output assembly is installed on the shroud, and the two output terminals of the motor are electrically connected with the positive tab and the negative tab of the output assembly respectively, high voltage energy can be absorbed when the voltage of the system circuit fluctuates, the internal components and the rear-stage load of the motor are prevented from being damaged due to voltage impact, and the service life of the electronic components is prolonged.

[0018] In summary, the utility model solves the technical problem that the output end of the motor in the prior art has no protection circuit, which causes the motor internal components and load to be easily impacted when the output end voltage fluctuates, the output assembly and the motor of the application can absorb high voltage energy when the motor output end voltage fluctuates, avoid impacting the motor internal and load, reduce maintenance cost, prolong service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural schematic diagram of the output assembly of the utility model;

[0020] Figure 2 It is the circuit principle diagram of the protection circuit;

[0021] Figure 3 It is the structural schematic diagram of the output assembly installing the cover plate;

[0022] Figure 4 It is Figure 3 The side view of

[0023] Figure 5 It is the structural schematic diagram of the motor in the prior art;

[0024] Figure 6 It is the structural schematic diagram of the motor of the utility model;

[0025] In the drawing, 1-output assembly, 10-bracket, 11-isolation plate, 12-mounting hole, 13-screw hole, 14-cover plate, 21-positive electrode tab, 22-negative electrode tab, 23-positive electrode connection bolt, 24a, 24b, 25a, 25b-wire hole, 26-positive diode, 27-negative diode, 28-connection tab, 3-motor, 31-front end cover, 32-rear end cover, 33-output terminal, 34-shield, 35-cap, 4-load. DETAILED DESCRIPTION

[0026] The utility model is further explained below in combination with the drawings and examples, the preferred embodiment of the utility model is shown in the drawings, the function of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0027] Example one:

[0028] As Figure 1As shown in the figure, an output assembly includes a bracket 10, and a positive tab 21 and a negative tab 22 arranged in the bracket 10, and a protection circuit electrically connected between the positive tab 21 and the negative tab 22. When transient overvoltage occurs due to voltage fluctuation at the output end, the protection circuit is turned on to absorb high voltage energy, thereby avoiding impact on the equipment connected to the output assembly and prolonging the service life of sensitive electronic components.

[0029] Specifically, as shown in the figure, Figure 2 The protection circuit includes a plurality of diodes connected between the positive tab 21 and the negative tab 22, the anode of the diode is electrically connected to the negative tab 22, and the cathode is electrically connected to the positive tab 21. The diode is an avalanche diode. Since the voltage at the cathode of the diode is greater than the voltage at the anode, the diode is not normally turned on. Its function is the same as that of a common diode in reverse blocking. The B+ and B- output voltages of the motor 3 are directly output to the load 4. When a large voltage appears at B+, the avalanche diode is reverse-broken, the diode is broken, and high voltage energy is dissipated, thereby avoiding the impact of motor transient overvoltage and playing a protective role.

[0030] As shown in the figure, Figure 1 In this embodiment, the diode includes a positive diode 26 and a negative diode 27, the positive diode 26 is press-fitted on the positive tab 21, the negative diode 27 is press-fitted on the negative tab 22, and the positive diode 26 and the negative diode 27 are electrically connected through a connecting tab 28. By connecting the two diodes in series, the breakdown voltage of the circuit can be increased, and the situation that the single diode cannot withstand the output voltage of the generator and causes the load 4 to short circuit can be avoided. The negative diode 27, the positive diode 26 and the connecting tab 28 are connected reliably by means of soldering.

[0031] Further, the positive diode 26 and the negative diode 27 are provided with three respectively, and the positive diode 26 and the negative diode 27 are connected one by one through the connecting tab 28, that is, the protection circuit is formed by the positive diode 26 and the negative diode 27 connected in series one by one inside the protection circuit, and three parallel diode lines are formed. Parallel connection of three diode lines of the same type can play a role in dividing current, avoiding burning of a single avalanche diode line due to excessive current. The protection circuit is integrated inside the output assembly 1 to realize modularization. When the voltage of B+ is too large, the reverse current generated by the avalanche diode causes excessive heat that exceeds the heat resistance limit of the diode, the diode is burned out, and the protection circuit fails. The output assembly 1 can be replaced, so that the equipment can quickly return to normal operation.

[0032] As shown in the figure, Figure 3 The bracket 10 is provided with a cover plate 14 for covering the diode inside, which protects the structure of the diode. The cover plate 14 is an insulating structure and can be fixed on the surface of the bracket 10 by buckling, bonding or other means.

[0033] AsFigure 1 As shown, the positive tab 21 is horizontally arranged on the upper surface of the bracket 10, and the positive terminal bolt 23 is vertically arranged on the bracket 10, the upper end of the positive terminal bolt 23 extends out of the upper surface of the bracket 10 and passes through the terminal hole 25b of the positive tab 21, and is locked by a nut in the later stage to achieve reliable connection and current transmission, and the lower end of the positive terminal bolt 23 extends out of the lower surface of the bracket 10 and is provided with a terminal hole 25a. The lower end of the negative tab 22 extends out of the lower surface of the bracket 10 and is provided with a terminal hole 24a, and the upper end extends out of the upper surface of the bracket 10, and the upper end of the negative tab 22 is horizontally arranged on the upper surface of the bracket 10 and is provided with a terminal hole 24b. A through hole coaxially arranged with the terminal hole 24b is arranged on the bracket 10, and a negative terminal bolt passing through the through hole and the terminal hole 24b and electrically connected with the negative tab 22 is also arranged on the bracket 10.

[0034] The current is input from the terminal hole 25a at the lower end of the positive terminal bolt 23 and the terminal hole 24a at the lower end of the negative tab 22, and is output from the upper end of the positive terminal bolt 23 and the negative terminal bolt, and the output form is the upper side output, which is convenient for wiring and installation.

[0035] Further, the upper surface of the bracket 10 between the upper end of the positive terminal bolt 23 and the terminal hole 24b of the upper end of the negative tab 22 is provided with a partition plate 11 for realizing electrical isolation between the positive and negative electrodes. A through hole coaxially arranged with the terminal hole 24b of the negative tab 22 is arranged on the bracket 10 for installing the negative terminal bolt during wiring.

[0036] The bracket 10 is made of insulating material, and the positive tab 21, the negative tab 22 and the positive terminal bolt 23 are integrally injection molded with the bracket 10.

[0037] As shown in FIG. 1, Figure 1 and As shown in FIG. 1, Figure 4 As shown in FIG. 1, two mounting holes 12 are arranged side by side at the lower end of the bracket 10, and the terminal hole 25a at the lower end of the positive terminal bolt 23 and the terminal hole 24a at the lower end of the negative tab 22 are coaxially arranged in the two mounting holes 12 respectively. A screw hole 13 for installing a fastening screw is vertically arranged on the bracket 10, and the bracket 10 is fixed to the structure of the motor 3 through the fastening screw passing through the screw hole 13, thereby enhancing the fixing effect.

[0038] Example two:

[0039] As shown in FIG. 1, Figure 6As shown, a motor comprises a front end cover 31, a rear end cover 32, a stator and a rotor installed in a space formed by the front end cover 31 and the rear end cover 32, and a shroud 34 installed on a rear end face of the rear end cover 32, and the output assembly 1 in the first embodiment is installed on the shroud. When a transient overvoltage occurs in a system circuit due to voltage fluctuation, the avalanche diode absorbs high voltage energy by reverse breakdown, and the load 4 is short-circuited, so that the motor rear circuit and system circuit components are protected from damage caused by external transient overvoltage.

[0040] The fixing of the output assembly 1 is that the fixing screws pass through the screw holes 13 of the bracket 10 to fix the bracket 10 and the upper end face of the shroud 34, and the installation is reliable.

[0041] The two output terminals of the motor 3 are electrically connected with the positive electrode tab 21 and the negative electrode tab 22 of the output assembly 1 respectively. Specifically, the two output terminals of the motor 3 pass through the wiring holes 24a and 25a at the lower end of the output assembly 1 and are locked by nuts. When the load is connected, the positive electrode wire harness and the positive electrode tab 21 are locked on the positive electrode wiring bolt 23 by the nut, the negative electrode wiring bolt passes through the through hole on the bracket 10 and the negative electrode tab 22, and the negative electrode tab 22 and the negative electrode wire harness are locked by the nut. In this way, the output form of the motor 3 is changed from rear output to side output, and the wiring terminals are located on the upper side of the motor 3, which is convenient for customers to wire and install.

[0042] The negative electrode wiring bolt also passes through the via hole on the shroud 34, and the fixing screws cooperate with the negative electrode wiring bolt to realize the reliability of the positioning and fixing of the output assembly 1. An insulating pad is also installed between the negative electrode wiring bolt and the shroud 34 to realize the insulation between the negative electrode wiring bolt and the shroud 34.

[0043] The cap 35 is installed on the side away from the motor 3, and the output terminals, nuts and the like are covered inside to improve safety. The cap 35 and the mounting hole 12 are in interference fit, and the cap 35 can be made of insulating materials such as rubber.

[0044] The output assembly and the motor of the utility model realize the protection circuit electrically connected between the positive electrode tab and the negative electrode tab by setting the bracket and the positive electrode tab and the negative electrode tab on the bracket and setting, when the transient overvoltage occurs, the protection circuit is conducted to absorb high voltage energy, avoid the impact on the motor inside and the load, prevent the sensitive electronic components from being damaged, reduce the maintenance cost, prolong the service life.

[0045] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0046] In the description of the present specification, the words such as "several" describe the meaning of one or more. The meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly limited.

[0047] In the description of the present specification, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0048] Although the specific embodiments of the present application are described above, those skilled in the art should understand that the described embodiments are only part of the embodiments of the present application, not all the embodiments, which are only examples. The protection scope of the present application is defined by the claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, without any creative labor, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. An output component, characterized in that, It includes a support (10) and a positive lead (21) and a negative lead (22) disposed on the support (10). A protection circuit is electrically connected between the positive lead (21) and the negative lead (22). When a transient overvoltage occurs, the protection circuit is turned on to absorb energy.

2. The output component according to claim 1, characterized in that, The protection circuit includes several diodes connected between the positive lead (21) and the negative lead (22), with the positive terminal of the diode electrically connected to the negative lead (22) and the negative terminal electrically connected to the positive lead (21).

3. The output component according to claim 2, characterized in that, The diode includes a positive diode (26) and a negative diode (27). The positive diode (26) is press-fitted onto the positive lead (21), and the negative diode (27) is press-fitted onto the negative lead (22). The positive diode (26) and the negative diode (27) are connected by a connecting lead (28).

4. The output component according to claim 3, characterized in that, The bracket (10) is provided with a cover plate (14) that houses the diode.

5. The output component according to claim 1, characterized in that, The positive lead (21) is horizontally arranged on the upper surface of the bracket (10). The positive lead bolt (23) is vertically arranged on the bracket (10). The upper end of the positive lead bolt (23) extends out of the upper surface of the bracket (10) and passes through the wiring hole (25b) of the positive lead (21). The lower end of the positive lead bolt (23) extends out of the lower surface of the bracket (10) and has a wiring hole (25a).

6. The output component according to claim 5, characterized in that, The lower end of the negative lead (22) extends from the lower surface of the bracket (10) and has a wiring hole (24a), and the upper end extends from the upper surface of the bracket (10). The upper end of the negative lead (22) is horizontally set on the upper surface of the bracket (10) and has a wiring hole (24b). The bracket (10) has a through hole coaxially set with the wiring hole (24b) at the upper end of the negative lead (22). The bracket (10) is equipped with a negative lead bolt that passes through the through hole and the wiring hole (24b) at the upper end of the negative lead (22) and is electrically connected to the negative lead (22).

7. The output component according to claim 6, characterized in that, An isolation plate (11) is provided on the upper surface of the bracket located between the upper end of the positive terminal bolt (23) and the upper end of the negative terminal lead (22) terminal hole (24b).

8. The output component according to claim 7, characterized in that, The lower end of the bracket (10) has two mounting holes (12) arranged side by side. The wiring hole (25a) at the lower end of the positive terminal bolt (23) and the wiring hole (24a) at the lower end of the negative terminal lead (22) are respectively coaxially arranged in the two mounting holes (12).

9. The output component according to claim 1, characterized in that, The bracket (10) has vertical screw holes (13) for installing fastening screws.

10. An electric motor, comprising a front cover (31), a rear cover (32), and a stator and a rotor mounted in a space formed by the front cover (31) and the rear cover (32), wherein a protective cover (34) is mounted on the rear end face of the rear cover (32), characterized in that, The protective cover (34) is equipped with the output component (1) according to any one of claims 1 to 9, and the two output terminals (33) of the motor (3) are electrically connected to the positive lead (21) and the negative lead (22) of the output component (1), respectively.

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