A stepping motor mounting structure

Abstract

The utility model discloses a kind of step motor mounting structures, including motor main body, the face cover of being fixed in the top of motor main body, lower cover and upper cover are installed in the top of face cover in turn, multiple lower clamping slots are opened in radial direction on face cover, multiple upper clamping slots are opened in radial direction on the outer wall of upper cover, lower clamping slot and upper clamping slot are annularly regularly distributed;Multiple lower clamping hooks are set in the outer wall of the lower end of lower cover in axial direction, multiple lower clamping hooks are placed in multiple lower clamping slots, so that face cover and lower cover are clamped and fixed;Multiple upper clamping hooks are set in the outer wall of the upper end of lower cover in axial direction, multiple upper clamping hooks are placed in multiple upper clamping slot positions, so that lower cover and upper cover are clamped and fixed;The utility model is fixed between face cover and lower cover, between lower cover and upper cover by clamping structure, it is convenient to install, connection is firm, not easy to fall off.

Description

Technical Field

[0001] This utility model relates to the field of stepper motor technology, and specifically to a stepper motor mounting structure. Background Technology

[0002] A stepper motor is an open-loop control element that converts electrical pulse signals into angular or linear displacement. Under non-overload conditions, the motor's speed and stopping position depend only on the frequency and number of pulse signals, and are unaffected by load changes. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle in a set direction, called the step angle. Its rotation is done step by step at fixed angles. The angular displacement can be controlled by controlling the number of pulses, thus achieving accurate positioning; at the same time, the speed and acceleration of the motor can be controlled by controlling the pulse frequency, thus achieving speed regulation.

[0003] A stepper motor includes a motor body, a front cover mounted on top of the motor body, and a lower cover and an upper cover mounted on top of the front cover. In existing stepper motors, the upper and lower covers, as well as the lower cover and the front cover, are fixed together using adhesive or screws. Adhesive fixing is not secure and easily falls off; screw fixing involves a large number of screws, making installation cumbersome; furthermore, the front cover is relatively thin, generally less than 1 mm, resulting in a small contact area between the screws and the screw holes in the front cover, also making them prone to falling off. Utility Model Content

[0004] This utility model provides a stepper motor mounting structure to solve the problem of easy detachment between the top cover, bottom cover, and top cover.

[0005] A stepper motor mounting structure includes a motor body, a front cover fixed to the top of the motor body, and a lower cover and an upper cover sequentially mounted on the top of the front cover. The front cover has multiple radially arranged lower slots, and the upper cover has multiple radially arranged upper slots on its outer wall. The lower and upper slots are arranged in a regular annular pattern. The lower outer wall of the lower cover has multiple axially arranged lower hooks, which are inserted into the lower slots to engage and fix the front cover and the lower cover. The upper outer wall of the lower cover has multiple axially arranged upper hooks, which are inserted into the upper slots to engage and fix the lower cover and the upper cover.

[0006] In some embodiments, both the lower and upper slots are U-shaped slots, and a baffle is provided at the lower end of the upper slot; both the lower and upper hooks include a locking plate and a trapezoidal locking block disposed inside the free end of the locking plate, a guide slope is provided inside the trapezoidal locking block, and a locking surface is provided at the upper end of the trapezoidal locking block, with a gap formed between the locking surface and the end face of the lower cover; the trapezoidal locking block of the lower hook is located at the lower end of the cover, and the locking surface of the lower hook abuts against the lower end plane of the cover; the trapezoidal locking block of the upper hook is located in the upper slot at the upper end of the baffle, and the locking surface of the upper hook abuts against the upper end plane of the baffle.

[0007] In some embodiments, the motor body includes a housing, with multiple limiting grooves regularly provided on the top of the housing, and multiple protruding limiting plates provided along the outer wall of the cover. The multiple limiting plates are correspondingly placed in the multiple limiting grooves to prevent the cover from rotating axially.

[0008] In some embodiments, the lower and upper hooks are elastic and can expand outward and automatically reset under external force.

[0009] In some embodiments, the lower hook and the upper hook are staggered and are not on the same vertical line.

[0010] In some embodiments, two reinforcing plates are symmetrically arranged on the outer wall of the housing and the lower cover, each reinforcing plate extending radially, and the two reinforcing plates on the same side are locked together by fasteners.

[0011] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0012] 1. Multiple lower hooks are inserted into multiple lower slots to secure the top cover and the bottom cover; multiple upper hooks are axially arranged on the upper outer wall of the bottom cover, and these upper hooks are inserted into multiple upper slots to secure the bottom cover and the top cover; through the above structure, the top cover and the bottom cover, as well as the bottom cover and the top cover, are secured together, making installation convenient, the connection firm, and preventing them from easily falling off.

[0013] 2. Two reinforcing plates are symmetrically arranged on the outer wall of the casing and the lower cover. Each reinforcing plate extends radially and the two reinforcing plates on the same side are locked together by fasteners. The above structure further improves the connection between the components.

[0014] Additional aspects and advantages of this invention will continue to be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a three-dimensional structural diagram of this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the split structure;

[0018] Figure 3 This is a schematic diagram of the combined structure of the front cover, bottom cover, and top cover;

[0019] Figure 4 yes Figure 3 A schematic diagram of the split structure;

[0020] Figure 5 yes Figure 3 A schematic diagram of the structure viewed from below;

[0021] Figure 6 This is a structural diagram of the top cover;

[0022] Figure 7 This is a structural diagram of the lower cover.

[0023] Figure label:

[0024] Motor body 1, housing 100, limiting groove 101;

[0025] 2. Face cover; 20. Lower slot; 21. Limiting plate;

[0026] Lower cover 3, lower hook 30, upper hook 31, clamping plate 300, trapezoidal clamping block 301

[0027] Guide slope 302, snap-fit ​​surface 303;

[0028] Top cover 4, upper slot 40, baffle 41;

[0029] 5. Reinforcing plate, 50 screw holes. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Reference Figures 1-7 A stepper motor mounting structure includes a motor body 1, a cover 2 fixed to the top of the motor body 1, a lower cover 3 and an upper cover 4 sequentially mounted on the top of the cover 2. The cover 2 is a circular plate used to cover the top of the motor body 1, the lower cover 3 is a hollow circular plate for mounting a circuit board, and the upper cover 4 is a circular plate used to cover the top of the lower cover 3. Three lower slots 20 are radially formed on the cover 2, and three upper slots 40 are radially formed on the outer wall of the upper cover 4. The lower slots 20 and the upper slots 40 are annular. The cover is evenly distributed; three lower hooks 30 are provided axially on the lower outer wall of the lower cover 3, and the three lower hooks 30 are correspondingly inserted into the three lower slots 20 to fix the cover 2 and the lower cover 3 in a snap-fit ​​connection; three upper hooks 31 are provided axially on the upper outer wall of the lower cover 3, and the three upper hooks 31 are inserted into the three upper slots 40 to fix the lower cover 3 and the upper cover 4 in a snap-fit ​​connection; through the above structure, the snap-fit ​​connection between the cover 2 and the lower cover 3, and between the lower cover 3 and the upper cover 4 is achieved, which is convenient to install, firmly connected, and not easy to fall off.

[0035] In some embodiments, both the lower slot 20 and the upper slot 40 are U-shaped slots. A baffle 41, which is a flat plate, is provided at the lower end of the upper slot 40 and is located inside the upper slot 40, forming a stepped shape with the outer wall of the upper cover 4. Both the lower hook 30 and the upper hook 31 include a locking plate 300, the outer wall of which is arc-shaped, and a trapezoidal locking block 301 disposed on the inner side of the free end of the locking plate 300. A guide slope 302 is provided on the inner side of the trapezoidal locking block 301. During the insertion into the slot, the guide slope 302 is compressed, causing the lower hook 30 and the upper hook 31 to deform and expand radially. After the squeezing pressure disappears, it will automatically reset and lock. A snap-fit ​​surface 303 is provided at the upper end of the trapezoidal snap-fit ​​block 301. It is a plane and a U-shaped gap is formed between the snap-fit ​​surface and the end face of the lower cover 3. The trapezoidal snap-fit ​​block 301 of the lower snap hook 30 is located at the lower end of the cover 2. The snap-fit ​​surface of the lower snap hook 30 abuts against the lower end plane of the cover 2. The two are in surface-to-surface contact and snap-fit ​​to prevent loosening. The trapezoidal snap-fit ​​block 301 of the upper snap hook 31 is located in the upper snap groove 40 at the upper end of the baffle 41. The snap-fit ​​surface of the upper snap hook 31 abuts against the upper end plane of the baffle 41. The two are in surface-to-surface contact and snap-fit ​​to prevent loosening.

[0036] In some embodiments, the motor body 1 includes a housing 100, with three limiting grooves 101 evenly provided on the top of the housing 100, and three protruding limiting plates 21 provided radially on the outer wall of the cover 2. The three limiting plates 21 are correspondingly placed in the three limiting grooves 101 to prevent the cover 2 from rotating axially and to ensure a firm connection.

[0037] In some embodiments, the lower hook 30 and the upper hook 31 are elastic and can expand outward and automatically reset under external force, so that after the hook is inserted into the slot, the two are automatically connected and fixed; specifically, the lower cover 3, the lower hook 30, and the upper hook 31 can be integrally injection molded from plastic, which is convenient and quick, and has a certain degree of elasticity.

[0038] In some embodiments, the lower hook 30 and the upper hook 31 are staggered and not on the same vertical line; the staggered arrangement facilitates processing and installation and ensures uniform force distribution.

[0039] In some embodiments, two reinforcing plates 5 are symmetrically arranged on the outer walls of the housing 100 and the lower cover 3. Each reinforcing plate 5 extends radially and has corresponding screw holes. The two reinforcing plates 5 on the same side are locked together by fasteners screwed into the screw holes 50. The fasteners can be screws, bolts or bolts. The above structure further improves the connection between components, and only one or two fasteners are needed on each side for fixation, which is simple and convenient.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stepper motor mounting structure, comprising a motor body, a cover fixed to the top of the motor body, and a lower cover and an upper cover sequentially mounted on the top of the cover, characterized in that: The top cover has multiple lower locking slots along the radial direction, and the top cover has multiple upper locking slots along the radial direction. The lower and upper locking slots are arranged in a regular ring. The lower outer wall of the bottom cover has multiple lower locking hooks along the axial direction. The lower locking hooks are inserted into the lower locking slots to lock the top cover and the bottom cover together. The upper outer wall of the bottom cover has multiple upper locking hooks along the axial direction. The upper locking hooks are inserted into the upper locking slots to lock the bottom cover and the top cover together.

2. The stepper motor mounting structure as described in claim 1, characterized in that: Both the lower and upper slots are U-shaped slots, with a baffle at the lower end of the upper slot. Both the lower and upper hooks include a locking plate and a trapezoidal locking block located inside the free end of the locking plate. A guide slope is provided inside the trapezoidal locking block, and a locking surface is provided at the upper end of the trapezoidal locking block. A gap is formed between the locking surface and the end face of the lower cover. The trapezoidal locking block of the lower hook is located at the lower end of the cover, and the locking surface of the lower hook abuts against the lower end plane of the cover. The trapezoidal locking block of the upper hook is located in the upper slot at the upper end of the baffle, and the locking surface of the upper hook abuts against the upper end plane of the baffle.

3. The stepper motor mounting structure as described in claim 2, characterized in that: The motor body includes a housing, on the top of which multiple limiting grooves are regularly provided. Multiple protruding limiting plates are provided along the outer wall of the cover. The multiple limiting plates are correspondingly placed in the multiple limiting grooves to prevent the cover from rotating axially.

4. The stepper motor mounting structure as described in claim 3, characterized in that: The lower and upper hooks are elastic, allowing them to expand outward and automatically reset under external force.

5. The stepper motor mounting structure as described in claim 4, characterized in that: The lower and upper hooks are staggered and not on the same vertical line.

6. The stepper motor mounting structure as described in claim 3, characterized in that: Two reinforcing plates are symmetrically arranged on the outer wall of the casing and the lower cover. Each reinforcing plate extends radially and is locked together by fasteners on the same side.

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