Direct-current micromotor with stamping end cover structure

Abstract

The utility model discloses a direct current micromotor with a stamping end cover structure, which comprises a motor main shell and a rear end cover, the outer edge of the rear port of the motor main shell is provided with a plurality of protruding first connecting lugs, and the outer edge of the front port of the rear end cover is provided with a plurality of second connecting lugs in one-to-one correspondence with the first connecting lugs. A positioning hole is formed in the second connecting lug, a positioning rod penetrating through the positioning hole is arranged on the first connecting lug, a cover cap is connected to the end, penetrating out of the positioning hole, of the positioning rod in a clamped mode, a clamping ring is arranged on the inner wall of the cover cap, and a second protruding ring matched with the clamping ring is arranged on the outer edge of the top end of the positioning rod. According to the utility model, when the positioning rod passes through the positioning hole and is clamped and fastened with the cap, the rear end cover and the motor main shell can be locked together, compared with the traditional bolt connection, the operation is more convenient, the assembly time is saved, and the assembly efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially a direct current micro motor of stamping end cover structure. BACKGROUND

[0002] Direct current micro motor is micro direct current motor, it is a kind of small and exquisite electric motor, with the function of converting direct current electric energy into mechanical energy.The electronic structure of direct current micro motor generally includes rotor, magnetic tile stator and commutator, and the shell part of motor generally includes main casing and front and rear end covers, and is made of metal.

[0003] The existing motor shell is generally bolted and connected between the main casing and the end cover when assembling, but for micro motor, since its own volume is small, it is inconvenient to operate when screwing, which affects assembly efficiency.

[0004] Therefore, we propose a direct current micro motor of stamping end cover structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model is directed to provide a direct current micro motor of stamping end cover structure to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A direct current micro motor of stamping end cover structure, including motor main casing and rear end cover, the rear end port outer edge of the motor main casing is equipped with a plurality of protruding connecting ears one, and the front end port outer edge of the rear end cover is equipped with a plurality of connecting ears two corresponding to the connecting ears one, the connecting ears two are provided with positioning holes in, and the connecting ears one are provided with positioning rods penetrating the positioning holes, one end of the positioning rod penetrating the positioning hole is externally combined with a cap, the inner wall of the cap is provided with a snap ring, and the top end outer edge of the positioning rod is provided with a convex ring two matched with the snap ring.

[0008] In further embodiments, one end of the positioning rod penetrating the positioning hole adopts a circular truncated cone structure.

[0009] In further embodiments, a convex ring one is arranged on the outer wall of the positioning rod in the positioning hole, and a guide ring matched with the convex ring one is arranged on the inner wall of the positioning hole.

[0010] In further embodiments, the distance between the upper end face of the guide ring and the lower end port of the positioning hole is equal to the distance between the lower edge of the convex ring one and the upper surface of the connecting ear one.

[0011] In further embodiments, the maximum outer diameter of the convex ring two is smaller than the minimum inner diameter of the guide ring.

[0012] In further embodiments, the rear end of the motor main shell is spaced apart from the inner side of the ring by a plurality of protrusions, and the front end of the rear end cover is spaced apart from the outer side of the ring by a plurality of grooves corresponding to the protrusions.

[0013] In further embodiments, the outer side wall of the rear end cover is uniformly provided with a plurality of strips in the circumferential direction, and the rear end surface of the rear end cover is provided with a ring-shaped strip coaxial with the rear end cover, the ring-shaped strip and the strip intersect with each other.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] When the positioning rod passes through the positioning hole and is clamped and fastened with the cap, the rear end cover and the motor main shell are locked together, compared with the traditional bolt connection, it is more convenient to operate, which is beneficial to save assembly time, and thus the assembly efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a structural schematic view of the rear end cover of the utility model;

[0018] Figure 3 It is a structural schematic view of the motor main shell of the utility model;

[0019] Figure 4 It is a sectional structure schematic view when the connecting ear one and the connecting ear two are locked.

[0020] In the figure: 1, motor main shell; 11, protrusion; 2, rear end cover; 21, groove; 22, ring-shaped strip; 23, strip; 3, connecting ear one; 4, connecting ear two; 5, positioning hole; 51, guide ring; 6, positioning rod; 61, protruding ring one; 62, protruding ring two; 7, cap; 71, clamping ring. DETAILED DESCRIPTION

[0021] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" 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 indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in the description of the embodiments of the utility model with reference to the drawings, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0024] Please refer to Figures 1-4 A stamping end cover structure's direct current micro motor, including motor main casing 1 and rear end cover 2, rear end cover 2 is formed by stamping processing, and manufacturing is convenient, and the outer edge of the rear end port of motor main casing 1 is provided with four symmetrical connecting ears one 3, and connecting ear one 3 is perpendicular to protrude the outer side wall of motor main casing 1, and the outer edge of the front end port of rear end cover 2 is provided with four connecting ears two 4 corresponding to connecting ear one 3, and connecting ear two 4 is perpendicular to protrude the outer side wall of rear end cover 2, and the connecting ear two 4 is provided with positioning hole 5, and the connecting ear one 3 is provided with protruding positioning rod 6 corresponding to the position of positioning hole 5, when connecting ear one 3 and connecting ear two 4 are pasted together, positioning rod 6 penetrates the inside of positioning hole 5, and the end of positioning rod 6 that penetrates out of positioning hole 5 is externally combined with cap 7, the inner wall of cap 7 is provided with snap ring 71, and the top end outer edge of positioning rod 6 is provided with convex ring two 62 matched with snap ring 71, when cap 7 is buckled outside positioning rod 6, convex ring two 62 is clamped in the limiting groove formed between snap ring 71 and the inner top of cap 7, and the lower end of cap 7 is tightly attached to the upper surface of connecting ear two 4, so that connecting ear one 3 and connecting ear two 4 are effectively locked, so that the assembly operation of rear end cover 2 and motor main casing 1 is more convenient.

[0025] Further, in order to position the rod 6 and cap 7 between the locking firmness, the outer wall of the positioning rod 6 in the positioning hole 5 is provided with a convex ring 61, and the inner wall of the positioning hole 5 is provided with a guide ring 51 matched with the convex ring 61, the distance between the upper end surface of the guide ring 51 and the lower end of the positioning hole 5 is equal to the distance between the lower edge of the convex ring 61 and the upper surface of the connecting lug 3, so that the convex ring 62 and the snap ring 71 are clamped at the same time, the convex ring 61 and the guide ring 51 are also clamped, double locking is realized, the locking firmness is effectively improved, and the lower end of the guide ring 51 adopts an inclined surface shape, which is convenient for guiding the convex ring 61 and facilitating it to pass through the guide ring 51.

[0026] In order to facilitate the butt joint of the positioning rod 6 and the positioning hole 5, the end of the positioning rod 6 penetrating out of the positioning hole 5 adopts a circular truncated cone structure, so that the upper end of the positioning rod 6 is narrow and small, and the butt joint with the positioning hole 5 is facilitated, and the maximum outer diameter of the convex ring 62 is smaller than the minimum inner diameter of the guide ring 51, so that the upper end of the positioning rod 6 can smoothly pass through the guide ring 51.

[0027] In order to further improve the connection stability between the motor main shell 1 and the rear end cover 2, a plurality of convex edges 11 are arranged on the inner side of the rear end of the motor main shell 1, and a plurality of recesses 21 corresponding to the convex edges 11 are arranged on the outer side of the front end of the rear end cover 2, the thicknesses of the convex edges 11 and the recesses 21 are equal, so that when the motor main shell 1 and the rear end cover 2 are butt jointed, the convex edges 11 can be inserted into the recesses 21, the convex edges 11 and the rear end cover 2 are overlapped together, and the strength and firmness of the entire motor shell are better.

[0028] A plurality of strip ribs 23 are uniformly arranged on the outer side wall of the rear end cover 2 in the circumferential direction, the strip ribs 23 extend from the outer circumferential side of the rear end cover 2 to the rear end surface, and the rear end surface of the rear end cover 2 is provided with a ring rib 22 coaxial with the rear end cover 2, the ring rib 22 and the strip rib 23 are crossed with each other, through the arrangement of the strip rib 23 and the ring rib 22, the strength of the rear end cover 2 can be improved, and the heat dissipation area of the outer part of the rear end cover 2 can be increased, so as to improve the heat dissipation efficiency.

[0029] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A direct current micro motor of a stamped end cap structure comprising a motor main housing (1) and a rear end cap (2), characterized in that: The outer edge of the rear end of the motor main shell (1) is provided with a plurality of protruding connecting ears (3), and the front end of the rear end cover (2) is provided with a plurality of connecting ears (4) corresponding to the connecting ears (3), the connecting ears (4) are provided with positioning holes (5), and the connecting ears (3) are provided with positioning rods (6) penetrating the positioning holes (5), and the end of the positioning rod (6) penetrating the positioning hole (5) is provided with a cap (7). The inner wall of the cap (7) is provided with a snap ring (71), and the top end of the positioning rod (6) is provided with a protruding ring (62) matched with the snap ring (71).

2. A DC micromotor with a stamped end cap structure according to claim 1, characterized in that: The end of the positioning rod (6) penetrating the positioning hole (5) is provided with a circular truncated cone structure.

3. A DC micromotor with a stamped end cap structure according to claim 1, characterized in that: The outer wall of the positioning rod (6) in the positioning hole (5) is provided with a protruding ring (61), and the inner wall of the positioning hole (5) is provided with a guide ring (51) matched with the protruding ring (61).

4. A DC micromotor of the stamped end cap construction according to claim 3, characterized in that: The distance between the upper end surface of the guide ring (51) and the lower end of the positioning hole (5) is equal to the distance between the lower edge of the protruding ring (61) and the upper surface of the connecting ear (3).

5. A DC micromotor of the stamped end cap construction according to claim 3, characterized in that: The maximum outer diameter of the protruding ring (62) is smaller than the minimum inner diameter of the guide ring (51).

6. A DC micromotor of stamped end shield construction according to claim 1 characterized in that: The rear end of the motor main shell (1) is provided with a plurality of protruding edges (11) on the inner side, and the front end of the rear end cover (2) is provided with a plurality of grooves (21) corresponding to the protruding edges (11) on the outer side.

7. A DC micromotor of stamped end shield construction according to claim 1 characterized in that: The outer side wall of the rear end cover (2) is uniformly provided with a plurality of strips (23) in the circumferential direction, and the rear end of the rear end cover (2) is provided with a ring rib (22) coaxial with the rear end cover (2), and the ring rib (22) and the strip (23) are crossed.

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