Brush carrier shaping and pressing device

Abstract

The utility model relates to a brush carrier shaping and pressing device which comprises a supporting frame and a pressing device arranged on the supporting frame. The supporting frame comprises a base table used for containing the rubber cover and the brush frame, the brush frame comprises a bent frame body with a bottom plate part and a plurality of supporting arms extending from the two opposite sides of the frame body in the direction perpendicular to the surface of the bottom plate part, the frame body is covered with the rubber cover, and through holes allowing the supporting arms to penetrate out are formed in the rubber cover. The press-fitting device comprises a press-fitting support, a lower pressing head, a support driving piece and a press-fit assembly, the lower pressing head comprises a pre-pressing part formed at the bottom of the lower pressing head, the pre-pressing part is provided with an arc face part used for abutting against the supporting arm, and the arc face part is located in the middle of the bottom face of the pre-pressing part and is formed in a sunken mode; the press-fit assembly comprises a press-fit rod and a press-fit power piece, the lower pressing head is provided with a guide groove for the press-fit rod to move, and the two ends of the guide groove penetrate through the top end face of the lower pressing head and the surface of the cambered surface part correspondingly. Compared with the prior art, the brush holder and the rubber cover are assembled more tightly, the assembly precision is high, and the structure is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brush holder shaping and pressing device. BACKGROUND

[0002] The motor is usually composed of a rotor, a stator and a brush holder. The brush holder is a component for contacting the rotor. It not only helps to change the direction of electric current to generate torque, but also plays an important role in the stability and service life of the motor. At present, the assembly of the brush holder and the rubber cover is realized by using special assembly equipment. The traditional assembly equipment has low assembly precision and poor structural stability of the brush holder and the rubber cover after assembly. SUMMARY

[0003] The utility model discloses a brush holder shaping and pressing device, which solves the technical problems of low assembly precision and poor structural stability of the brush holder and the rubber cover in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a brush holder shaping and pressing device, which comprises a supporting frame and a pressing device arranged on the supporting frame. The supporting frame comprises a base for placing the rubber cover and the brush holder. The brush holder comprises a bent holder body having a bottom plate part and a plurality of support arms extending from opposite sides of the holder body in a direction perpendicular to the surface of the bottom plate part. The rubber cover is arranged on the holder body, and the rubber cover is provided with through holes for the support arms to pass through. The pressing device comprises a pressing support frame which is installed on the supporting frame in a lifting manner, a lower pressing head which is fixed on the pressing support frame, a support frame driving member which can drive the pressing support frame to lift, and a pressing assembly. The support frame driving member is supported on the supporting frame. The lower pressing head comprises at least one pre-pressing part formed on the bottom thereof. The pre-pressing part has an arc surface part for abutting against the support arm. The arc surface part is located in the middle of the bottom surface of the pre-pressing part and is recessed. The pressing assembly comprises a pressing rod and a pressing power member which can drive the pressing rod to lift. The pressing power member is supported on the pressing support frame. The lower pressing head has a guide groove for the movement of the pressing rod. The two ends of the guide groove respectively penetrate the top end surface of the lower pressing head and the surface of the arc surface part.

[0005] In some embodiments, the number of brush holders is two, the number of pre-pressing parts is two and each pre-pressing part corresponds to one brush holder. The two brush holders are arranged at intervals along the circumference of the lower pressing head. One pressing rod is arranged on each pre-pressing part.

[0006] In some embodiments, the lower pressing head has an empty passage groove. The two ends of the empty passage groove respectively penetrate the top surface and the bottom surface of the lower pressing head. The pre-pressing part is protruded from the bottom surface of the lower pressing head.

[0007] In some embodiments, the pressing device further comprises an outer pressing shaft sleeve for abutting against the surface of the rubber cover. The outer pressing shaft sleeve is arranged on the lower pressing head in a lifting manner.

[0008] In some embodiments, the outer pressure sleeve is fixedly connected with a limiting rod, a limiting slot for the movement of the limiting rod is formed in the sidewall of the lower pressing head, and an elastic element is arranged in the clearance slot of the lower pressing head and used for being compressed and deformed when the limiting rod moves towards the top surface of the lower pressing head.

[0009] In some embodiments, the pressing assembly further comprises a circular connecting seat arranged on the pressing support, the connecting seat is connected with the pressing power element, and the end of the pressing rod is fixed on the connecting seat.

[0010] In some embodiments, the pressing support is provided with a mounting plate, the mounting plate divides the inner part of the pressing support into an upper space and a lower space, the pressing power element is located in the upper space and fixed on the mounting plate, and the hollow guide seat is arranged in the lower space, and the connecting seat is arranged in the guide seat in a liftable manner.

[0011] In some embodiments, the base is provided with a first sensor for detecting the glue cover and a second sensor for detecting the brush holder.

[0012] In some embodiments, the base is provided with a top pressing assembly, the top pressing assembly comprises a top pressing rod for extending into the inside of the frame body and a top pressing power element for driving the top pressing rod to move relative to the base, and the top pressing power element is fixed on the base.

[0013] In some embodiments, the base is provided with a guide column, and the pressing support is provided with a guide hole for the sliding of the guide column.

[0014] Compared with the prior art, the brush holder shaping and pressing device provided by the utility model has the advantages that the pressing device comprises a pressing support, a lower pressing head, a support driving element and a pressing assembly, the lower pressing head comprises a pre-pressing part formed at the bottom of the lower pressing head, the pre-pressing part has an arc surface part for abutting against the supporting arm, the arc surface part is located in the middle of the bottom surface of the pre-pressing part and is recessed, the pressing assembly comprises a pressing rod and a pressing power element, the lower pressing head has a guide slot for the movement of the pressing rod, and the two ends of the guide slot respectively penetrate the top end surface of the lower pressing head and the surface of the arc surface part, so that, during the pressing, the pre-pressing part of the lower pressing head first contacts the brush holder and pre-presses the supporting arm of the brush holder into a predetermined shape through the arc surface part, and then the pre-pressed supporting arm is pressed against the glue cover through the pressing rod, so that the assembly of the brush holder and the glue cover is more compact, the assembly precision is high, and the structure is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a three-dimensional schematic view of the brush holder shaping and pressing device provided by the utility model embodiment Figure 1 ;

[0016] Figure 2 is an exploded view of the brush holder shaping and pressing device provided by the utility model embodiment Figure 2 ;

[0017] Figure 3 is Figure 2 is an enlarged view of the middle A part;

[0018] Figure 4 is a three-dimensional schematic view of the brush holder and the backing plate provided by the embodiment of the utility model;

[0019] Figure 5 is an exploded schematic view of the brush holder shaping and pressing device provided by the embodiment of the utility model Figure 1 ;

[0020] Figure 6 is a three-dimensional schematic view of the brush holder shaping and pressing device provided by the embodiment of the utility model Figure 2 ;

[0021] Figure 7 is a three-dimensional schematic view of the lower pressing head provided by the embodiment of the utility model;

[0022] Figure 8 is Figure 1 is a sectional view of the middle P-P surface;

[0023] Figure 9 is Figure 1 is a sectional view of the middle Q-Q surface.

[0024] Main element symbol explanation

[0025] 100-brush holder shaping and pressing device; 10-support frame; 11-base; 11a-storage groove; 11b-top pressing groove; 12-first sensor; 13-second sensor; 14-guide column; 20-pressing device; 21-pressing support; 211-mounting plate; 21a-upper space; 21b-lower space; 21c-guide hole; 22-lower pressing head; 221-pre-pressing part; 22a-curved surface part; 222-guide groove; 223-avoidance through groove; 224-limiting groove; 23-support driving member; 24-pressing assembly; 241-pressing rod; 242-pressing power member; 243-connection seat; 244-guide seat; 25-outer pressing shaft sleeve; 26-limiting rod; 30-top pressing assembly; 31-top pressing rod; 32-top pressing power member; 200-gum cap; 201-through hole; 300-brush holder; 301-frame body; 3011-bottom plate part; 302-supporting arm; 400-brush holder assembly; 401-backing plate. Specific implementation

[0026] In order to make the technical problems, technical solutions and beneficial effects of the utility model to be solved clearer and more apparent, the utility model will be further described in detail in combination with the drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] In order to make those skilled in the art better understand the technical solutions of the utility model, the implementation of the utility model will be described in detail in combination with specific drawings.

[0028] For the convenience of description, the "front", "rear", "left", "right", "upper", "lower" in the following are consistent with the front, rear, left, right, upper and lower directions of the drawings, but do not limit the structure of the utility model.

[0029] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meanings understood by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model patent application description and claims do not represent any order, quantity or importance, but are used to distinguish different components. Similarly, "one" or "a" and similar words also do not represent a quantity limit, but represent the existence of at least one.

[0030] As Figures 1 to 9As shown, the brush holder shaping and pressing device 100 provided by the embodiment comprises a support frame 10 and a pressing device 20 arranged on the support frame 10; the support frame 10 comprises a base 11 for placing a rubber cap 200 and a brush holder 300, the brush holder 300 comprises a bent holder body 301 with a bottom plate part 3011 and a plurality of supporting arms 302 respectively extending from opposite sides of the holder body 301 in a direction perpendicular to the surface of the bottom plate part 3011, the rubber cap 200 is arranged on the holder body 301, and the rubber cap 200 is provided with through holes 201 for the supporting arms 302 to pass through; the pressing device 20 comprises a pressing support 21 which is liftable and mounted on the support frame 10, a pressing head 22 fixed on the pressing support 21, a support driving member 23 capable of driving the pressing support 21 to lift, and a pressing assembly 24, the support driving member 23 is supported on the support frame 10; the pressing head 22 comprises at least one pre-pressing part 221 formed on the bottom of the pressing head 22, the pre-pressing part 221 has an arc surface part 22a for abutting against the supporting arms 302, and the arc surface part 22a is recessed and formed in the middle of the bottom surface of the pre-pressing part 221; the pressing assembly 24 comprises a pressing rod 241 and a pressing power member 242 capable of driving the pressing rod 241 to lift, the pressing power member 242 is supported on the pressing support 21, and the pressing head 22 has a guide groove 222 for the movement of the pressing rod 241, two ends of the guide groove 222 respectively penetrate the top end surface of the pressing head 22 and the surface of the arc surface part 22a.

[0031] The brush holder shaping and pressing device 100 described above, the pressing device 20 comprises the pressing support 21, the pressing head 22, the support driving member 23 and the pressing assembly 24, the pressing head 22 comprises the pre-pressing part 221 formed on the bottom of the pressing head 22, the pre-pressing part 221 has the arc surface part 22a for abutting against the supporting arms 302, and the arc surface part 22a is recessed and formed in the middle of the bottom surface of the pre-pressing part 221; the pressing assembly 24 comprises the pressing rod 241 and the pressing power member 242, the pressing head 22 has the guide groove 222 for the movement of the pressing rod 241, and two ends of the guide groove 222 respectively penetrate the top end surface of the pressing head 22 and the surface of the arc surface part 22a, so that, during pressing, the pre-pressing part 221 of the pressing head 22 first contacts the brush holder 300 and pre-presses the supporting arms 302 of the brush holder 300 into a predetermined shape through the arc surface part 22a, and then the pre-pressed supporting arms 302 are pressed against the rubber cap 200 through the pressing rod 241, so that the assembly of the brush holder 300 and the rubber cap 200 is more compact, the assembly precision is high, and the structure is more stable.

[0032] Referring to Figures 1 to 4The brush holder shaping and pressing device 100 provided by the embodiment comprises a supporting frame 10 and a pressing device 20. The supporting frame 10 comprises a base 11 for placing a rubber cover 200 and a brush holder 300. In the embodiment, the brush holder assembly 400 and the rubber cover 200 are sequentially placed on the base 11. The rubber cover 200 is a roughly circular cover body with a middle part upwardly (upward in the drawing) bulged. The number of the brush holder assemblies 400 on the base 11 is not limited to two, each of which comprises a brush holder 300 and a pad 401. The brush holder 300 comprises a bent holder body 301 with a bottom plate part 3011 and a support arm 302 extending from each of the opposite sides of the holder body 301 in a direction perpendicular to the surface of the bottom plate part 3011. The number of the support arms 302 on each side is not limited to two. The rubber cover 200 is arranged on the holder body 301. The rubber cover 200 is provided with a through hole 201 for the support arm 302 to pass through.

[0033] Referring to Figure 1 , Figures 5 to 7The pressing device 20 comprises a pressing support 21, a pressing head 22, a support driving member 23 and a pressing assembly 24. The pressing support 21 is installed on the support frame 10 in a lifting manner. The pressing head 22 is fixed on the pressing support 21. The support driving member 23 is supported on the support frame 10 and can drive the pressing support 21 to lift. The pressing assembly 24 comprises a pressing rod 241 and a pressing power member 242 which can drive the pressing rod 241 to lift. The pressing power member 242 is supported on the pressing support 21. The pressing head 22 has a guide groove 222 for the movement of the pressing rod 241. The two ends of the guide groove 222 respectively penetrate the top end surface of the pressing head 22 and the surface of the arc portion 22a. In this embodiment, the pressing support 21 is installed on the support frame 10 in a lifting manner through a guide rail and a sliding block structure and is located above the base 11. The pressing head 22 is fixedly installed on the bottom of the support frame 10 through any existing fixing mode such as screwing or welding. The support driving member 23 is a cylinder but is not limited thereto. The support driving member 23 is fixedly installed on the top of the support frame 10 through any existing fixing mode such as screwing or welding. The output shaft of the support driving member 23 is fixedly connected with the pressing support 21. The support driving member 23 can drive the pressing support 21 to lift relative to the base 11. The pressing head 22 comprises a pre-pressing portion 221 formed on the bottom thereof. The number of the pre-pressing portions 221 is two but is not limited thereto and corresponds to the two brush holders 300 respectively. The two brush holders 300 are arranged in a circumferential direction of the pressing head 22 in a spaced manner. The pre-pressing portion 221 has an arc portion 22a for abutting against the outer end of the supporting arm 302 when the pressing support 21 descends. The arc portion 22a can bend the supporting arm 302 around the connection between the supporting arm 302 and the holder body 301 to the other side of the holder body 301 into a predetermined curved shape. The arc portion 22a is located in the middle of the bottom surface of the pre-pressing portion 221 and is recessed. The pressing assembly 24 comprises the pressing rod 241 and the pressing power member 242 which can drive the pressing rod 241 to lift. The pressing power member 242 is a cylinder but is not limited thereto. The pressing power member 242 is supported on the pressing support 21. The number of the pressing rods 241 is two but is not limited thereto and corresponds to the two pre-pressing portions 221 respectively. One pressing rod 241 is arranged on each pre-pressing portion 221. The pressing head 22 has the guide groove 222 for the movement of the pressing rod 241. The guide groove 222 extends in a direction perpendicular to the bottom surface of the base 11 and penetrates the top end surface of the pressing head 22 and the surface of the arc portion 22a.It can be understood that the support driving member 23 drives the press-fitting support 21, the pressing head 22 and the pressing assembly 24 to move towards the base 11. After the pre-pressing portion 221 of the pressing head 22 contacts the support arm 302 of the brush holder 300, as the pressing head 22 continues to move downward, the curved surface portion 22a can bend the support arm 302 around the connection between the support arm 302 and the holder body 301 to the other side of the holder body 301 into a predetermined curved shape. After the bottom end surface of the pressing head 22 abuts against the surface of the glue cover 200, the pressing power member 242 drives the pressing rod 241 to move downward and bend the support arm 302 on the glue cover 200.

[0034] Please continue to see Figure 1 、 Figures 5 to 7 The pressing head 22 provided in the embodiment has an empty passage 223, both ends of the empty passage 223 penetrating through the top surface and the bottom surface of the pressing head 22, and the pre-pressing portion 221 is protruded from the bottom surface of the pressing head 22. In the embodiment, the pressing head 22 has a circular cross section, and the empty passage 223 extends along the axial direction of the pressing head 22. The empty passage 223 can avoid the protrusion at the center of the glue cover 200 when pressing. Both ends of the empty passage 223 penetrate through the top surface and the bottom surface of the pressing head 22, and the pre-pressing portion 221 is protruded from the bottom surface of the pressing head 22.

[0035] In other embodiments, the bottom surface of the pre-pressing portion 221 can be flush with the bottom surface of the pressing head 22.

[0036] See Figure 1 、 Figures 5 to 9 The press-fitting device 20 provided in the embodiment further includes an outer pressing sleeve 25 for abutting against the surface of the glue cover 200. The outer pressing sleeve 25 is movably sleeved on the pressing head 22. In this way, when the pressing head 22 presses the brush holder 300, the outer pressing sleeve 25 can press the glue cover 200 tightly on the base 11, and the shaping effect of the brush holder 300 is better.

[0037] See Figure 1 、 Figures 5 to 9 In the embodiment, the outer pressing sleeve 25 is fixedly connected with a limiting rod 26, and a limiting groove 224 for the movement of the limiting rod 26 is formed in the side wall of the pressing head 22. The limiting groove 224 extends along the axial direction of the pressing head 22. An elastic element (not shown in the figure) is arranged in the empty passage 223 of the pressing head 22, for being compressed and deformed when the limiting rod 26 moves towards the top surface of the pressing head 22.

[0038] See Figure 1 、 Figures 5 to 9The pressing assembly 24 provided in this embodiment also includes a circular connecting seat 243 disposed on the pressing bracket 21. The connecting seat 243 is connected to the pressing power component 242, and the end of the pressing rod 241 is fixed to the connecting seat 243. In this embodiment, the connecting seat 243 is fixedly connected to the pressing power component 242 by any existing fixing method such as threads or welding, and the pressing rod 241 can be detachably installed on the connecting seat 243 by a snap-fit ​​method.

[0039] See Figure 1 , Figures 5 to 9 In this embodiment, a mounting plate 211 is provided on the pressing bracket 21. The mounting plate 211 divides the interior of the pressing bracket 21 into an upper space 21a and a lower space 21b. The pressing power component 242 is located in the upper space 21a and fixed on the mounting plate 211. A hollow guide seat 244 is provided in the lower space 21b. The two ends of the guide seat 244 abut against the mounting plate 211 and the pressing bracket 21 respectively, and are fixedly connected by fasteners such as screws. The connecting seat 243 is movably installed in the guide seat 244. The diameter of the connecting seat 243 is basically the same as the inner diameter of the guide seat 244. In this way, the movement of the connecting seat 243 can be guided by the guide seat 244, thereby improving the pressing stability of the connecting seat 243 and the pressing rod 241.

[0040] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 8 and Figure 9 The base 11 provided in this embodiment is provided with a first sensor 12 for detecting the adhesive cap 200 and a second sensor 13 for detecting the brush holder 300. In this embodiment, the first sensor 12 is, but is not limited to, an infrared sensor, and the second sensor 13 is, but is not limited to, a laser displacement sensor. In this way, the presence or absence of the adhesive cap 200 can be detected by the first sensor 12, and the presence or absence of the brush holder 300 can be detected by the second sensor 13.

[0041] See Figure 2 and Figure 3 In this embodiment, a pressing assembly 30 is provided on the base 11. The pressing assembly 30 includes a pressing rod 31 for extending into the frame 301 and a pressing power member 32 for driving the pressing rod 31 to move relative to the base 11. The pressing power member 32 is fixed on the base 11. In this embodiment, the pressing power member 32 is, but is not limited to, a cylinder. The surface of the base 11 is formed with a storage groove 11a for inserting the brush holder 300 and a pressing groove 11b for moving the pressing rod 31. The pressing groove is connected to the storage groove 11a. Thus, after insertion, the pressing rod 31 can be pushed out by the pressing power member 32, and the brush holder 300 is pressed tightly into the storage groove 11a.

[0042] Referring to Figure 1 , Figure 2 , Figure 8 and Figure 9 , the abutment 11 is provided with a guide column 14, and the pressing support 21 is provided with a guide hole 21c for the guide column 14 to slide, so that the stability of the pressing support 21 can be ensured during shaping.

[0043] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement or improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A brush holder shaping and pressing device, characterized in that, The device includes a support frame and a pressing device mounted on the support frame. The support frame includes a base for holding a glue cap and a brush holder. The brush holder includes a bent frame body having a base plate and a plurality of support arms extending from opposite sides of the frame body in a direction perpendicular to the surface of the base plate. The glue cap covers the frame body and has through holes for the support arms to pass through. The pressing device includes a pressing bracket that is vertically mounted on the support frame, a lower pressing head fixed to the pressing bracket, a bracket drive member capable of driving the pressing bracket to move up and down, and a pressing... The pressing assembly includes a support drive member supported on a support frame; a lower pressing head includes at least one pre-pressing portion formed at its bottom, the pre-pressing portion having an arcuate portion for abutting against the support arm, the arcuate portion being located in the middle of the bottom surface of the pre-pressing portion and being recessed; the pressing assembly includes a pressing rod and a pressing power member capable of driving the pressing rod to rise and fall, the pressing power member being supported on the pressing bracket, the lower pressing head having a guide groove for moving the pressing rod, the two ends of the guide groove respectively penetrating the top surface of the lower pressing head and the surface of the arcuate portion.

2. The brush holder shaping and pressing device according to claim 1, characterized in that, The number of brush holders is two, the number of pre-compression parts is two and they correspond one-to-one with the two brush holders respectively. The two brush holders are arranged at intervals along the circumference of the lower pressure head, and each pre-compression part is provided with a pressure rod.

3. The brush holder shaping and pressing device according to claim 1, characterized in that, The pressure head has a clearance groove, the two ends of which penetrate the top and bottom surfaces of the pressure head, respectively, and the pre-pressing part protrudes from the bottom surface forming the pressure head.

4. The brush holder shaping and pressing device according to claim 3, characterized in that, The pressing device further includes an outer pressure bushing for abutting against the surface of the rubber cap, the outer pressure bushing being movably fitted onto the lower pressure head.

5. The brush holder shaping and pressing device according to claim 4, characterized in that, A limiting rod is fixedly connected to the external pressure bushing. A limiting groove is provided on the side wall of the lower pressure head to allow the limiting rod to move. An elastic element is provided in the clearance groove of the lower pressure head to be compressed and deformed when the limiting rod moves toward the top surface of the lower pressure head.

6. The brush holder shaping and pressing device according to claim 1, characterized in that, The pressing assembly also includes a circular connecting seat disposed on the pressing bracket, the connecting seat being connected to the pressing power component, and the end of the pressing rod being fixed on the connecting seat.

7. The brush holder shaping and pressing device according to claim 6, characterized in that, The pressing bracket is provided with a mounting plate, which divides the interior of the pressing bracket into an upper space and a lower space. The pressing power component is located in the upper space and fixed on the mounting plate. A hollow guide seat is provided in the lower space, and the connecting seat is movably installed in the guide seat.

8. The brush holder shaping and pressing device according to any one of claims 1 to 7, characterized in that, The base is provided with a first sensor for detecting the rubber cap and a second sensor for detecting the brush holder.

9. The brush holder shaping and pressing device according to any one of claims 1 to 7, characterized in that, A pressing assembly is provided on the base, the pressing assembly includes a pressing rod for extending into the frame body and a pressing power component for driving the pressing rod to move relative to the base, the pressing power component being fixed on the base.

10. The brush holder shaping and pressing device according to any one of claims 1 to 7, characterized in that, The base is provided with guide posts, and the press-fit bracket is provided with guide holes for the guide posts to slide.

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