Barb forming mechanism of carbon brush sleeve

Abstract

The utility model relates to a barb forming mechanism of a carbon brush sleeve, the carbon brush sleeve is provided with a deformable sheet, the deformable sheet is a part of the side wall of the carbon brush sleeve, one end of the deformable sheet is connected with the carbon brush sleeve, the other end of the deformable sheet is a free end, the barb forming mechanism comprises a third driving mechanism and a connecting rod mechanism, the connecting rod mechanism extends into the carbon brush sleeve, and the third driving mechanism is connected with the carbon brush sleeve. A third driving mechanism acts in the first direction to drive the connecting rod mechanism to form a protrusion, the protrusion is aligned with a deformable piece on the carbon brush sleeve, and the free end of the deformable piece is jacked up towards the outer side of the carbon brush sleeve to form an inverted hook; the third driving mechanism acts in the second direction so that the protrusion formed by the connecting rod mechanism can be separated from the deformable piece, and the deformable piece is kept in the current state. The mechanism can automatically jack up the barb.

Description

Technical Field

[0001] The utility model relates to the technical field of motor assembly systems, in particular to a barb forming mechanism for a carbon brush sleeve. Background Art

[0002] The carbon brush part of the bracket-type series-excited motor usually adopts the following structure: the carbon brush sleeve is assembled and fixed on the bracket, and the carbon brush is installed in the carbon brush sleeve. Under the action of spring pressure, the carbon brush contacts the commutator to realize the commutation of the rotor winding.

[0003] The carbon brush sleeve and the bracket are fixed by the raised barbs on the carbon brush sleeve. In the prior art, the carbon brush sleeve and the bracket are usually assembled in such a way that the barbs on the carbon brush sleeve are raised before assembly, and the carbon brush sleeve is inserted into the bracket hole by a tool. When the carbon brush sleeve is inserted, the barbs on the carbon brush sleeve are pressed flat by the bracket, and when the carbon brush sleeve is inserted into place, the barbs bounce back and are raised by the elasticity of the material itself, thus playing the role of limiting and fixing.

[0004] The above assembly method has the following disadvantages:

[0005] 1) The barb on the carbon brush sleeve is squeezed flat by the bracket hole. After being pressed into place, the barb cannot bounce back or the rebound height is not enough, and it cannot play a fixing role;

[0006] 2) Due to the protrusion of the barb, the bracket hole is easily squeezed and cracked by the carbon brush sleeve;

[0007] 3) Manual operation is required to form the barbs on the carbon brush sleeve, and the processing efficiency is low. Utility Model Content

[0008] In order to solve the above problems, the purpose of the utility model is to provide a barb forming mechanism for a carbon brush sleeve, which can automatically lift up the barb.

[0009] The barb forming mechanism of the carbon brush sleeve, a deformable sheet is provided on the carbon brush sleeve, the deformable sheet is a part of the side wall of the carbon brush sleeve, and one end of the deformable sheet is connected to the carbon brush sleeve, and the other end of the deformable sheet is a free end, including a third driving mechanism and a connecting rod mechanism, the connecting rod mechanism extends into the carbon brush sleeve, the third driving mechanism moves in a first direction to drive the connecting rod mechanism to form a protrusion, the protrusion is aligned with the deformable sheet on the carbon brush sleeve, and the free end of the deformable sheet is lifted toward the outside of the carbon brush sleeve to form a barb; the third driving mechanism moves in a second direction to separate the protrusion formed by the connecting rod mechanism from the deformable sheet, and the deformable sheet remains in the current shape.

[0010] Preferably, the connecting rod mechanism includes a driving rod, a first connecting rod and a second connecting rod. The driving rod is driven by a third driving mechanism to extend and retract forward and backward along the center line direction. The second connecting rod is located on the front side of the driving rod and the front end of the second connecting rod rotates around a fixed fulcrum. The front end of the driving rod is connected to the rear end of the second connecting rod through the first connecting rod.

[0011] Preferably, it comprises a moving seat, on which a carbon brush sleeve connecting portion is provided, and the carbon brush sleeve is sleeved on the carbon brush sleeve connecting portion; and the third driving mechanism is mounted on the moving seat.

[0012] Preferably, the carbon brush sleeve connecting part includes a connecting sleeve fixed on a movable seat, a connecting rod mechanism is located in the connecting sleeve, and a first opening is provided on the connecting sleeve for exposing a protrusion formed by the connecting rod mechanism; the carbon brush sleeve is arranged on the connecting sleeve, and the deformable sheet of the carbon brush sleeve is arranged toward the first opening.

[0013] Preferably, the front end of the second connecting rod is hinged to the connecting sleeve to form the fixed rotation fulcrum.

[0014] Preferably, the movable seat comprises a horizontal plate and a vertical plate, the horizontal plate and the vertical plate are arranged in an L shape, and the third driving mechanism is located at the L-shaped notch.

[0015] The carbon brush sleeve connecting portion is arranged on the vertical plate, and the vertical plate is provided with a second opening for connecting the output end of the third driving mechanism with the connecting rod mechanism.

[0016] Since the utility model adopts the above scheme, the deformable sheet on the carbon brush sleeve can be pushed out to form a barb by means of the third driving mechanism and the connecting rod mechanism, which reduces manual intervention and is conducive to improving processing efficiency. After the carbon brush sleeve and the bracket are plugged in place, the barb can be formed by extending the connecting rod mechanism of the mechanism into the carbon brush sleeve. It is unnecessary to form the barb on the carbon brush sleeve in advance, which can avoid the problem of insufficient rebound height of the barb after extrusion and cracking of the bracket hole due to extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a carbon brush sleeve assembly device;

[0018] Figure 2 This is a schematic diagram of the initial installation position of the carbon brush sleeve and bracket;

[0019] Figure 3 A schematic diagram of a clamping device clamping a bracket;

[0020] Figure 4 A schematic diagram of the structure of the carbon brush set being assembled to the bracket;

[0021] Figure 5 It is the action diagram of the connecting rod mechanism;

[0022] Figure 6 This is a diagram showing the position relationship between the bracket and the positioning column.

[0023] Reference numerals:

[0024] Bracket 1, fixing part 11, carbon brush sleeve 2, connecting sleeve 21, deformable sheet 211, base 3, bracket fixing seat 31, positioning column 311, clamping mechanism 32, first driving mechanism 321, pressing block 322, moving seat 33, carbon brush sleeve connecting part 331, third driving mechanism 332, second driving mechanism 34, connecting rod mechanism 35, driving rod 351, first connecting rod 352, second connecting rod 353. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model are described in detail below.

[0026] Embodiment 1:

[0027] like Figure 5 As shown, this embodiment provides a barb forming mechanism for a carbon brush sleeve, wherein a deformable sheet is provided on the carbon brush sleeve, wherein the deformable sheet is a part of the side wall of the carbon brush sleeve, and one end of the deformable sheet is connected to the carbon brush sleeve, and the other end of the deformable sheet is a free end, and is characterized in that it comprises a third driving mechanism and a connecting rod mechanism, wherein the connecting rod mechanism extends into the carbon brush sleeve, and the third driving mechanism moves in a first direction to drive the connecting rod mechanism to form a protrusion, wherein the protrusion is aligned with the deformable sheet on the carbon brush sleeve, and lifts the free end of the deformable sheet toward the outside of the carbon brush sleeve to form a barb; the third driving mechanism moves in a second direction opposite to the first direction to reset the connecting rod mechanism, and the deformable sheet remains in its current shape.

[0028] In this embodiment, the deformable sheet is flush with the end face of the carbon brush sleeve in which it is located in the initial state. The deformable sheet can be deformed under the action of external force and remain in the current state after the external force is removed, so that the deformable sheet can be forced by the protrusion formed by the connecting rod mechanism to make its free end push up toward the outside of the carbon brush sleeve to form a barb. After the carbon brush sleeve and the bracket are inserted into place, a limiting structure can be formed by cooperating with the corresponding part of the bracket to ensure the reliability of the connection between the carbon brush sleeve and the bracket.

[0029] Embodiment 2:

[0030] This embodiment further discloses an air compressor motor carbon brush sleeve assembly device, based on which the barb forming mechanism of the carbon brush sleeve of embodiment 1 is further described. Figure 1 As shown, an air compressor motor carbon brush sleeve assembly device includes a base 3, a bracket fixing seat 31 is provided on the base 3, the bracket is placed on the bracket fixing seat 31, and a fixing portion 11 is provided on the bracket 1 for plugging and matching with the carbon brush sleeve. Figure 1 As shown, the middle part of the bracket fixing seat 31 in this embodiment is provided with a downwardly recessed positioning portion that matches the outer contour of the bottom of the bracket, and the bracket fixing seat 31 can provide downward and radial limiting for the bracket thereon. Figure 6As shown, a positioning column 311 is provided on the bracket fixing seat 31 corresponding to the fixing portion 11 on the bracket. The positioning column 311 provides a positioning guide for the position of the bracket on the bracket fixing seat 31, so as to facilitate the alignment of the bracket fixing portion 11 with the carbon brush sleeve connecting portion 331. Preferably, the positioning column 311 is provided at least on the left and right sides of the fixing portion 11 of the bracket, so that the positioning column 311 can also prevent the bracket from being offset in the circumferential direction.

[0031] A clamping mechanism 32 is provided above the bracket fixing seat 31, and the clamping mechanism 32 provides an upper limit for the bracket on the bracket fixing seat 31. The clamping mechanism 32 switches between an extended state and a retracted state. Figure 3 As shown, in the extended state, the clamping mechanism 32 clamps the bracket on the bracket fixing seat 31 from above; in the retracted state, the clamping mechanism 32 is separated from the bracket on the bracket fixing seat 31. The clamping mechanism 32 in this embodiment includes a first driving mechanism 321 and a pressing block 322, and the pressing block 322 is driven by the first driving mechanism 321 to extend and retract between a first position and a second position. In the first position, the pressing block 322 clamps the bracket on the bracket fixing seat 31 from above; in the second position, the pressing block 322 is separated from the bracket on the bracket fixing seat 31, and the bracket 1 can be removed from the bracket fixing seat 31 in this state. The optional first driving mechanism 321 uses a cylinder to achieve movement between the first position and the second position. The pressing block 322 in this embodiment preferably uses a deformable buffer material, so that the pressing block 322 can press the bracket while avoiding wear on the bracket. In a specific embodiment, the deformable buffer material can be rubber, plastic, etc.

[0032] A movable seat 33 is provided on the side of the bracket fixing seat 31, and the movable seat 33 is driven by the second driving mechanism 34 to move toward the fixing portion 11 of the bracket; a carbon brush sleeve connecting portion 331 is provided on the movable seat 33, and the carbon brush sleeve 2 is sleeved on the carbon brush sleeve connecting portion 331. Figure 4 As shown, the carbon brush sleeve 2 on the movable seat 33 is plugged into the fixed part 11 of the bracket under the drive of the second driving mechanism 34. In this embodiment, the carbon brush sleeve to be assembled on the bracket is mounted on the movable seat 33, and the movable seat 33 drives the carbon brush sleeve thereon to approach the bracket 1 on the bracket fixing seat 31. By reasonably setting the stop position of the movable seat 33, the carbon brush sleeve 2 can be assembled to the bracket 1. In order to facilitate the connection between the carbon brush sleeve 2 and the bracket 1, in this embodiment, the fixed part 11 on the bracket 1 is arranged on the moving path of the movable seat 33 so that the carbon brush sleeve 2 thereon can be installed on the bracket fixing part 11 by moving the movable seat 33. Preferably, the fixed part 11 of the bracket and the carbon brush sleeve connecting part 331 of the movable seat 33 are arranged horizontally and their midlines coincide. In this way, the movable seat 33 can be moved horizontally to complete the assembly of the carbon brush sleeve and the bracket, and the structure is simple.

[0033] Preferably, at least one outer end surface of the carbon brush sleeve is provided with a limiting protrusion, and after the carbon brush sleeve is inserted into the fixing part under the drive of the second driving mechanism, the limiting protrusion is limitedly matched with the end of the fixing part, so that the carbon brush sleeve cannot be further inserted into the fixing end after being inserted into the fixing part until the limiting protrusion is limitedly matched with the end of the fixing part, so that the insertion position of the carbon brush sleeve can be more accurately controlled, so that the subsequent connecting rod mechanism operates the deformable sheet to form the barb.

[0034] The movable seat 33 is provided with a third driving mechanism 332, and the connecting rod mechanism 35 extends into the carbon brush sleeve. The third driving mechanism 332 drives the connecting rod mechanism 35 to push out the deformable sheet 211 on the carbon brush sleeve to form an undercut. The deformable sheet 211 is flush with its end face where the carbon brush sleeve is located in the initial state. The connecting rod mechanism 35 is separated from the deformable sheet 211 in the first state. When the movable seat 33 drives the carbon brush sleeve 2 to connect with the bracket 1, the connecting rod mechanism 35 is connected to the carbon brush sleeve 2.

[0035] During the process, the connecting rod mechanism 35 remains in the first state, that is, the deformable sheet 211 remains in the initial state. After the carbon brush sleeve 2 and the bracket 1 are plugged into place, the deformable sheet 211 of the connecting sleeve 21 is aligned with the limiting notch of the fixing portion 11 of the bracket. Figure 5 As shown, the third driving mechanism 332 drives the connecting rod mechanism 35 to switch to the second state. In the second state, the connecting rod mechanism 35 forms a protrusion, which is aligned with the deformable sheet 211 on the connecting sleeve 21 and pushes the deformable sheet 211 toward the limiting notch to form a barb that is inserted into the limiting notch, so that the carbon brush sleeve 2 and the fixing part 11 form a limiting fit through the barb and the limiting notch, and the connection structure is reliable. When the movable seat 33 needs to be withdrawn, the third driving mechanism 332 is actuated to switch the connecting rod mechanism 35 from the second state back to the first state, so as to avoid the protrusion of the connecting rod mechanism 35 from interfering with the carbon brush sleeve and / or the bracket, so that the connecting seat can be smoothly withdrawn to the initial position.

[0036] Further integration Figure 5As shown, the link mechanism 35 includes a driving rod 351, a first link 352 and a second link 353. The driving rod 351 is driven by the third driving mechanism 332 to extend and retract forward and backward along the centerline direction. The second link 353 is located at the front side of the driving rod 351 and the second link rotates around a fixed rotation fulcrum. Optionally, the fixed rotation fulcrum is located at the front end of the second link 353. The front end of the driving rod 351 and the rear end of the second link 353 are connected through the first link 352. The front end of the second link 353 forms a fixed rotation fulcrum. When the driving rod 351 is driven by the third driving mechanism 332 to move forward, the first link 352 and the second link 353 are brought close to each other to form a protrusion. The connecting rod mechanism adopting the above structure can form a protrusion on the connecting rod mechanism or eliminate the protrusion by controlling the extension and retraction of the driving rod, so that when the protrusion is formed, the free end of the deformable sheet is pushed out to form a barb. When the movable seat needs to be reset, the driving rod drives the first connecting rod and the second connecting rod to retract into the inside of the connecting sleeve to prevent the protrusion from hindering the withdrawal of the movable seat and the carbon brush sleeve connecting part.

[0037] As a preferred embodiment, the carbon brush sleeve connection part includes a connection sleeve 21 fixed on the movable seat, and the connecting rod mechanism 35 is arranged in the connection sleeve 21. The connection sleeve is provided with a first opening for the protrusion formed by the connection rod mechanism to be exposed; the carbon brush sleeve is arranged on the connection sleeve, and the deformable sheet of the carbon brush sleeve is arranged toward the first opening. And after the carbon brush sleeve and the fixed part of the bracket are plugged into place, the limiting notch of the fixed part is located below the first opening, so that the free end of the deformable sheet can be inserted into the limiting notch under the action of the protrusions of the two-side mechanism. By setting the connection sleeve, the connection sleeve can be conveniently installed on the carbon brush sleeve connection part, and the first opening is set so that the protrusion formed by the connection mechanism is exposed from the first opening to lift the free end of the deformable sheet. In this embodiment, the front end of the second connecting rod is hinged to the connection sleeve 21 to form the fixed rotation fulcrum.

[0038] In this embodiment, the first driving mechanism 321, the second driving mechanism 34 and the third driving mechanism 332 are all cylinders.

[0039] The working mode of the above-mentioned air compressor motor carbon brush sleeve assembly device is as follows. The initial state of the device is as follows: Figure 1 As shown, firstly, the bracket 1 is installed on the bracket fixing seat 31, and the carbon brush sleeve 2 is sleeved on the carbon brush sleeve connecting portion 331 of the movable seat 33, as shown in FIG. Figure 2 After the bracket 1 and the carbon brush sleeve 2 are installed in place, the clamping mechanism presses the bracket from the top. Figure 3 As shown; the second driving mechanism 34 drives the movable seat 33 to move to the specified position, and during the movement, the carbon brush sleeve 2 is inserted into the fixed portion 11 of the bracket; as Figure 4-5After the carbon brush sleeve 2 is inserted into place, the movable seat 33 remains in the current position, and the third driving mechanism 332 drives the connecting rod mechanism 35 to lift the deformable piece 211 of the carbon brush sleeve to form a hook; then the third driving mechanism 332 drives the connecting rod mechanism 35 to return to the first state, and the second driving mechanism 34 drives the movable seat 33 to reset; the first driving mechanism 321 drives the clamping device to reset, and at this time, the assembled carbon brush sleeve and bracket integrated part can be removed from the bracket fixing seat 31.

[0040] This embodiment adopts the above solution to automatically fix the carbon brush cover 2 to the bracket 21, and the manual participation in the assembly process is small.

[0041] This is beneficial to improving production efficiency and product consistency. After the carbon brush sleeve and the bracket are assembled in place, the deformable sheet 211 on the carbon brush sleeve can be pushed out to form a barb by means of the third driving mechanism 332 and the connecting rod mechanism 35. There is no need to form a barb on the carbon brush sleeve in advance, which can avoid the problem of insufficient rebound height of the barb after extrusion and cracking of the bracket hole due to extrusion.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. The barb forming mechanism of the carbon brush sleeve, the carbon brush sleeve is provided with a deformable sheet, the deformable sheet is a part of the side wall of the carbon brush sleeve, and one end of the deformable sheet is connected to the carbon brush sleeve, and the other end of the deformable sheet is a free end. It is characterized in that It comprises a third driving mechanism and a connecting rod mechanism, wherein the connecting rod mechanism extends into the carbon brush sleeve, the third driving mechanism moves in a first direction to drive the connecting rod mechanism to form a protrusion, the protrusion is aligned with the deformable sheet on the carbon brush sleeve, and the free end of the deformable sheet is lifted toward the outside of the carbon brush sleeve to form an underhook; The third driving mechanism moves in a second direction opposite to the first direction to reset the connecting rod mechanism, and the deformable sheet is kept in the current shape.

2. The barb forming mechanism of the carbon brush sleeve according to claim 1, It is characterized in that The connecting rod mechanism includes a driving rod, a first connecting rod and a second connecting rod. The driving rod is driven by a third driving mechanism to extend and retract forward and backward along the center line direction. The second connecting rod is located on the front side of the driving rod and the front end of the second connecting rod rotates around a fixed rotation fulcrum. The front end of the driving rod is connected to the rear end of the second connecting rod through the first connecting rod.

3. The barb forming mechanism of the carbon brush sleeve according to claim 1, It is characterized in that It comprises a moving seat, on which a carbon brush sleeve connecting portion is arranged, and the carbon brush sleeve is sleeved on the carbon brush sleeve connecting portion; and a third driving mechanism is installed on the moving seat.

4. The barb forming mechanism of the carbon brush sleeve according to claim 3, It is characterized in that The carbon brush sleeve connecting part comprises a connecting sleeve fixed on the moving seat, the connecting rod mechanism is located in the connecting sleeve, and the connecting sleeve is provided with a first opening for exposing the protrusion formed by the connecting rod mechanism; The carbon brush sleeve is sleeved on the connecting sleeve, and the deformable sheet of the carbon brush sleeve is arranged toward the first opening.

5. The barb forming mechanism of the carbon brush sleeve according to claim 4, It is characterized in that The front end of the second connecting rod is hinged to the connecting sleeve to form the fixed rotation fulcrum.

6. The barb forming mechanism of the carbon brush sleeve according to claim 3, It is characterized in that The movable seat includes a horizontal plate and a vertical plate, which are arranged in an L shape. The third driving mechanism is located at the L-shaped notch. The carbon brush sleeve connecting part is arranged on the vertical plate, and the vertical plate is provided with a second opening for connecting the output end of the third driving mechanism with the connecting rod mechanism.

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