CN214921139U

CN214921139U - Threaded bottom hole of aluminum end cover of motor

Info

Publication number: CN214921139U
Application number: CN202120984156.3U
Authority: CN
Inventors: 汪润宝; 王江; 张伟建
Original assignee: Zhangzhou Moduo Motor Co ltd
Current assignee: Zhangzhou Moduo Motor Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-30
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a motor aluminum end cover screw thread bottom hole, including recess and aluminum end cover body, inlay respectively all around on aluminum end cover body top has a set of recess, the top of aluminum end cover body is provided with protective structure, the inside of recess is provided with self tapping structure, the bottom of recess is provided with connection structure, connection structure includes the connecting hole, the connecting hole is inlayed around aluminum end cover body bottom, the connecting hole is linked together with the inside of recess. This motor aluminium end cover screw thread bottom hole is through being provided with the connecting hole, add man-hour to aluminium end cover body, directly cast out the connecting hole that matches the size with the bolt on the top of aluminium end cover body, the inside of connecting hole is not directly locked the carbon brush frame with self tapping structure on aluminium end cover body, the loss that appears the screw tap when can save the tapping process and prevent the tapping like this, greatly reduced manufacturing cost, what solve is need punch earlier tapping again, lead to the low and fragile problem of awl of attacking of production efficiency.

Description

Threaded bottom hole of aluminum end cover of motor

Technical Field

The utility model relates to the technical field of motors, specifically be a motor aluminium end cover screw thread bottom outlet.

Background

The aluminum end cover is an important component on the motor, is connected to one end of the motor, is generally connected with a carbon brush holder in the motor, generally casts a threaded bottom hole for the aluminum end cover in a connection mode, then taps to form a threaded hole, locks the carbon brush holder on the aluminum end cover by using a common screw, has low production efficiency, is easy to damage a tapping cone, and needs a novel threaded bottom hole of the aluminum end cover of the motor to overcome the defect.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved:

(1) the traditional motor aluminum end cover threaded bottom hole needs to be punched and then tapped, so that the production efficiency is low, and a tapping cone is easy to damage;

(2) in the traditional motor aluminum end cover threaded bottom hole, after connection, a screw is exposed outside, and the screw is corroded for a long time, so that the connection stability is poor;

(3) traditional motor aluminium end cover screw bottom hole connects the locking force not enough, and it is not hard up easily to take place the screw.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor aluminum end cover screw thread bottom outlet to propose need punch earlier in solving above-mentioned background art and then tap, lead to the low and fragile problem of awl of attacking of production efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: a threaded bottom hole of an aluminum end cover of a motor comprises grooves and an aluminum end cover body, wherein a group of grooves are respectively embedded in the periphery of the top end of the aluminum end cover body;

the connecting structure comprises connecting holes, the connecting holes are embedded around the bottom end of the aluminum end cover body, and the connecting holes are communicated with the inside of the groove.

Preferably, the central line of the connecting hole and the central line of the groove are on the same vertical plane, and the height inside the connecting hole is smaller than that of the aluminum end cover body.

Preferably, protective structure is by slot, guard plate, activity chamber, group board, spring, spout, first logical groove and second lead to the groove and constitute, the spout sets up the one side at the recess, the inside both sides difference swing joint in spout has a set of guard plate, the slot is inlayed in one side of recess, guard plate and slot swing joint, the board is dialled to one side fixedly connected with of guard plate, activity chamber fixed connection is at the both ends at aluminium end cover body top, the bottom in activity chamber is inlayed and is had the second to lead to the groove, the top in activity chamber is inlayed and is had first logical groove, it runs through first logical groove and the second and leads to the groove and extend to the outside in activity chamber to dial the board, dial one side fixedly connected with spring of board.

Preferably, the central line of the movable cavity and the central line of the aluminum end cover body are on the same vertical plane, and the length of the protection plate is greater than that of the inside of the groove.

Preferably, self-tapping structure comprises draw-in groove, screw cap, bolt and conical head, screw cap swing joint is in the inside bottom of recess, inlay on the top of screw cap has the draw-in groove, the bottom fixedly connected with bolt of screw cap, bolt and connecting hole swing joint, the bottom fixedly connected with conical head of bolt.

Preferably, the center line of the bolt and the center line of the connecting hole are on the same vertical plane, and the height of the bolt is greater than the height inside the connecting hole.

Compared with the prior art, the beneficial effects of the utility model are that: the motor aluminum end cover threaded bottom hole not only saves a tapping process and screw tap loss, realizes the protection of a screw, but also improves the connection tightness;

(1) by arranging the connecting holes, when the aluminum end cover body is processed, the connecting holes with the size matched with the bolts are directly cast at the top end of the aluminum end cover body, the carbon brush holder is directly locked on the aluminum end cover body by a self-tapping structure without tapping inside the connecting holes, so that the tapping process can be saved, the loss of a screw tap during tapping can be prevented, and the production cost is greatly reduced;

(2) by arranging the inserting slot, the protection plate, the movable cavity, the shifting plate, the spring, the sliding slot, the first through slot and the second through slot, when the aluminum end cover body and the carbon brush holder are locked through the self-tapping structure, the shifting plates on two sides are firstly pressed to drive the protection plate on one side to move, the protection plate is completely retracted into the sliding slot, the self-tapping structure is switched into the connecting hole and locked with the carbon brush holder, the shifting plate is loosened under the pushing of the spring and drives the protection plate to rebound rapidly, the protection plate is inserted into the inserting slot, so that the top end of the groove is completely closed, the protection on the self-tapping structure is realized, and the aluminum end cover body is prevented from being corroded or damaged when being exposed outside;

(3) through being provided with the draw-in groove, the screw cap, bolt and conical head, when being connected aluminium end cover body and carbon brush frame, rotate the screw cap through the draw-in groove, the screw cap drives the bolt rotation again, press down and make conical head and bolt change over to the inside of connecting hole over to, and link to each other with the screw hole on the carbon brush frame, change over to the inside back of connecting hole over to the bolt completely, alright connect with the completion, adopt its connection reliability of dedicated screw cap and bolt and turn round loose moment and obtain improving, thereby realize improving the locking force after connecting.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is an enlarged partial sectional view of the utility model at a in fig. 1;

fig. 4 is a schematic top view of the screw cap of the present invention.

In the figure: 1. a protective structure; 101. a slot; 102. a protection plate; 103. a movable cavity; 104. dialing a plate; 105. a spring; 106. a chute; 107. a first through groove; 108. a second through groove; 2. a groove; 3. connecting holes; 4. a self-tapping structure; 401. a card slot; 402. a screw cap; 403. a bolt; 404. a conical head; 5. an aluminum end cap body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-4, a threaded bottom hole of an aluminum end cap of a motor comprises grooves 2 and an aluminum end cap body 5, wherein a group of grooves 2 are respectively embedded around the top end of the aluminum end cap body 5, a protective structure 1 is arranged at the top end of the aluminum end cap body 5, a self-tapping structure 4 is arranged inside each groove 2, and a connecting structure is arranged at the bottom end of each groove 2;

referring to fig. 1-4, the threaded bottom hole of the aluminum end cover of the motor further comprises a connecting structure, wherein the connecting structure comprises a connecting hole 3, the connecting hole 3 is embedded around the bottom end of the aluminum end cover body 5, and the connecting hole 3 is communicated with the inside of the groove 2;

the central line of the connecting hole 3 and the central line of the groove 2 are on the same vertical plane, and the height inside the connecting hole 3 is smaller than that of the aluminum end cover body 5;

specifically, as shown in fig. 1, when the aluminum end cover body 5 is processed, the connecting hole 3 with the size matched with the bolt 403 is directly cast at the top end of the aluminum end cover body 5, the carbon brush holder is directly locked on the aluminum end cover body 5 by the self-tapping structure 4 without tapping inside the connecting hole 3, so that the tapping process can be omitted, the loss of a screw tap during tapping can be prevented, and the production cost can be greatly reduced.

Example 2: the protective structure 1 comprises a slot 101, a protective plate 102, a movable cavity 103, a shifting plate 104, a spring 105, a sliding groove 106, a first through groove 107 and a second through groove 108, the sliding groove 106 is arranged on one side of the groove 2, two sides inside the sliding groove 106 are respectively movably connected with a group of protective plates 102, the slot 101 is embedded in one side of the groove 2, the protective plates 102 are movably connected with the slot 101, one side of each protective plate 102 is fixedly connected with the shifting plate 104, the movable cavity 103 is fixedly connected to two ends of the top of the aluminum end cover body 5, the bottom end of the movable cavity 103 is embedded with the second through groove 108, the top end of the movable cavity 103 is embedded with the first through groove 107, the shifting plate 104 penetrates through the first through groove 107 and the second through groove 108 and extends to the outside of the movable cavity 103, and one side of the shifting plate 104 is fixedly connected with the spring 105;

the central line of the movable cavity 103 and the central line of the aluminum end cover body 5 are on the same vertical plane, and the length of the protection plate 102 is greater than the length inside the groove 2;

specifically, as shown in fig. 1, fig. 2 and fig. 3, when the aluminum end cover body 5 is locked with the carbon brush holder through the self-tapping structure 4, the poking plate 104 on both sides is pressed first to drive the protection plate 102 on one side to move, so that the protection plate 102 is completely retracted into the sliding groove 106, after the self-tapping structure 4 is transferred into the connecting hole 3 and locked with the carbon brush holder, the poking plate 104 is loosened under the pushing of the spring 105, the poking plate 104 drives the protection plate 102 to rebound rapidly, so that the protection plate 102 is inserted into the slot 101, thereby completely closing the top end of the groove 2, and the self-tapping structure 4 can be protected, and is prevented from being exposed to the outside and corroded or damaged.

Example 3: the self-tapping structure 4 consists of a clamping groove 401, a screw cap 402, a bolt 403 and a conical head 404, wherein the screw cap 402 is movably connected to the bottom end inside the groove 2, the clamping groove 401 is embedded in the top end of the screw cap 402, the bolt 403 is fixedly connected to the bottom end of the screw cap 402, the bolt 403 is movably connected with the connecting hole 3, and the conical head 404 is fixedly connected to the bottom end of the bolt 403;

the central line of the bolt 403 and the central line of the connecting hole 3 are on the same vertical plane, and the height of the bolt 403 is greater than the height inside the connecting hole 3;

specifically, as shown in fig. 1 and 4, when the aluminum end cap body 5 is connected to the carbon brush holder, the screw cap 402 is rotated through the clamping groove 401, the screw cap 402 drives the bolt 403 to rotate, the conical head 404 and the bolt 403 are rotated into the connecting hole 3 by pressing downward and are connected with the threaded hole on the carbon brush holder, after the bolt 403 is completely rotated into the connecting hole 3, the connection can be completed, and the connection reliability and the twisting moment of the special screw cap 402 and the special bolt 403 are improved, so that the locking force after the connection is improved.

The working principle is as follows: when the utility model is used, firstly, when the aluminum end cover body 5 is processed, the connecting hole 3 with the size matched with the bolt 403 is directly cast at the top end of the aluminum end cover body 5, the interior of the connecting hole 3 is not tapped and the carbon brush holder is directly locked on the aluminum end cover body 5 by the self-tapping structure 4, thus the tapping process can be saved and the loss of screw tap can be prevented when tapping, the production cost is greatly reduced, when the aluminum end cover body 5 is connected with the carbon brush holder, the poking plate 104 at two sides is firstly pressed to drive the protection plate 102 at one side to move, after the protection plate 102 is completely retracted into the chute 106, the screw cap 402 is rotated through the clamping groove 401, the screw 403 is then driven to rotate by the screw cap 402, the cone head 404 and the bolt 403 are rotated into the connecting hole 3 by downward pressing, and are connected with the threaded hole on the carbon brush holder, after the bolt 403 is completely rotated into the connecting hole 3, the connection can be completed, adopt its connection reliability of dedicated screw cap 402 and bolt 403 and turn round loose moment and improve to improve the locking force after connecting, connect after the locking, loosen and dial board 104 under the promotion of spring 105, dial board 104 and drive guard plate 102 and kick-back fast, make the inside that guard plate 102 inserted slot 101, thereby make the top of recess 2 closed completely, prevent that self tapping structure 4 from exposing outside by the corruption or impaired.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a motor aluminium end cover screw bottom hole, includes recess (2) and aluminium end cover body (5), its characterized in that: a group of grooves (2) are respectively embedded in the periphery of the top end of the aluminum end cover body (5), a protective structure (1) is arranged at the top end of the aluminum end cover body (5), a self-tapping structure (4) is arranged in each groove (2), and a connecting structure is arranged at the bottom end of each groove (2);

the connecting structure comprises connecting holes (3), the connecting holes (3) are embedded around the bottom end of the aluminum end cover body (5), and the connecting holes (3) are communicated with the inside of the groove (2).

2. An electric motor aluminum end cap threaded bottom hole according to claim 1, characterized in that: the central line of the connecting hole (3) and the central line of the groove (2) are on the same vertical plane, and the height inside the connecting hole (3) is smaller than that of the aluminum end cover body (5).

3. An electric motor aluminum end cap threaded bottom hole according to claim 1, characterized in that: the protective structure (1) comprises a slot (101), a protective plate (102), a movable cavity (103), a shifting plate (104), a spring (105), a sliding groove (106), a first through groove (107) and a second through groove (108), wherein the sliding groove (106) is arranged on one side of a groove (2), two sides inside the sliding groove (106) are respectively and movably connected with a group of protective plates (102), the slot (101) is embedded on one side of the groove (2), the protective plate (102) is movably connected with the slot (101), one side of the protective plate (102) is fixedly connected with the shifting plate (104), the movable cavity (103) is fixedly connected with two ends of the top of an aluminum end cover body (5), the bottom end of the movable cavity (103) is embedded with the second through groove (108), the top end of the movable cavity (103) is embedded with the first through groove (107), the shifting plate (104) runs through the first through groove (107) and the second through groove (108) and extends to the outside of the movable cavity (103), one side of the poking plate (104) is fixedly connected with a spring (105).

4. An electric motor aluminum end cap threaded bottom hole according to claim 3, characterized in that: the central line of the movable cavity (103) and the central line of the aluminum end cover body (5) are on the same vertical plane, and the length of the protection plate (102) is greater than the length inside the groove (2).

5. An electric motor aluminum end cap threaded bottom hole according to claim 1, characterized in that: self tapping structure (4) comprises draw-in groove (401), screw cap (402), bolt (403) and conical head (404), screw cap (402) swing joint is in the inside bottom of recess (2), inlay on the top of screw cap (402) has draw-in groove (401), the bottom fixedly connected with bolt (403) of screw cap (402), bolt (403) and connecting hole (3) swing joint, the bottom fixedly connected with conical head (404) of bolt (403).

6. An electric motor aluminum end cap threaded bottom hole according to claim 5, characterized in that: the center line of the bolt (403) and the center line of the connecting hole (3) are on the same vertical plane, and the height of the bolt (403) is greater than the height inside the connecting hole (3).