Connecting structure of stepping motor

Abstract

The utility model discloses a connecting structure of a stepping motor, which comprises a stepping motor main body, and the stepping motor main body comprises a shell and a framework arranged in the shell. A gear seat is arranged in the framework; a shaft body is arranged in the center of the gear seat in a penetrating manner; a shaft cap is arranged above the gear seat; one end of the shaft body is connected with the shaft cap; a pressing plate is arranged on the shell; the pressing plate is arranged on the shaft cap. The shaft cap and the shaft body are arranged on the stepping motor body in a split mode. According to the utility model, the structural design is reasonable, and the shaft cap and the shaft body in the stepping motor main body are arranged in the skeleton in a split manner, so that a user can conveniently position the shaft cap and the shaft body during installation, and the effect during installation is better; the pin seat and the shell are integrally formed, so that the occupied space is reduced, the number of parts is reduced, and the stability and firmness of the structure are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a step motor field especially relates to a step motor's connecting structure. BACKGROUND

[0002] The electronic expansion valve is a throttle valve driven by a step motor, which has been popularized in new energy vehicles. A single-polarity control method driven by constant pressure is generally used: each winding has two phases, and the controller energizes each winding according to a predetermined time sequence through a lead line. The single-polarity drive generally adopts a four-phase eight-beat or four-item four-beat excitation mode to make the electronic expansion valve rotate according to the required step sequence, thereby controlling the refrigeration system refrigeration liquid supply of the air conditioner in the new energy vehicle.

[0003] In the prior art, the shaft body and the gear seat arranged in the step motor are usually directly assembled, which may cause defective products and shaft body deflection after long-term use, affecting the use of users in subsequent use. The existing pin seat is also composed of many components, which makes installation inconvenient and affects the speed of user installation. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art and provides a step motor connecting structure.

[0005] The utility model adopts the technical scheme to solve the above technical problem:

[0006] A step motor connecting structure includes a step motor body, the step motor body includes a shell and a skeleton arranged in the shell; the skeleton is arranged with a gear seat; a shaft body is arranged at the center position of the gear seat; a shaft cap is arranged above the gear seat; one end of the shaft body is connected with the shaft cap; the shaft cap and the shaft body are arranged in a split body on the step motor body; a pressing plate is arranged on the shell; the pressing plate is arranged on the shaft cap; an integrally formed pin seat is arranged at any position outside the shell.

[0007] The above components achieve the following effects: the shaft cap and the shaft body in the step motor body are arranged in a split body inside the skeleton, which facilitates positioning during installation and improves the installation effect; the pressing plate is arranged to achieve positioning and compression; the shaft cap and the pressing plate are arranged to prevent the radial and axial directions of the shaft body from deviating due to long-term work; the pin seat is integrally formed with the shell, which reduces the occupied space, reduces the components, and improves the stability and firmness of the structure.

[0008] Preferably, a fixing hole is arranged at the bottom of the skeleton; the shaft body is connected in the skeleton through the fixing hole.

[0009] The effect achieved by the above components is that the shaft body can be installed in the fixing hole after passing through the gear base, and the fixing effect of the shaft body is better.

[0010] Preferably, the top end of the shaft cap is arranged with a fixing groove; the end of the shaft body away from the fixing hole is fixedly connected with the fixing groove; and a step is arranged below the shaft cap.

[0011] The effect achieved by the above components is that the shaft body is fixed by the fixing groove, and the shaft cap is also fixed at the upper end of the shaft body; and the step is arranged to make the shaft cap better adapt to the shaft body for work.

[0012] Preferably, the gear base comprises a base and a gear part arranged on the base; and the gear part is arranged in the shaft cap.

[0013] The effect achieved by the above components is that the gear part is arranged to rotate in cooperation, and the base is arranged to place and fix the gear part.

[0014] Preferably, the pin seat is arranged with a pin hole; a pin is arranged in the pin hole; and the pin is connected with the skeleton through the pin seat.

[0015] The effect achieved by the above components is that the pin hole is arranged to place the pin.

[0016] Preferably, the shell is arranged with a grounding groove; the pin comprises a grounding pin; and the grounding pin is connected with the grounding groove.

[0017] The effect achieved by the above components is that the grounding groove and the grounding pin are arranged to ground and fix the grounding pin.

[0018] Compared with the prior art, the utility model has the advantages that the shaft cap and the shaft body in the stepping motor main body are arranged in the skeleton in a split mode, positioning is convenient when the user installs, the effect is better when installing, the pressing plate is arranged to play the role of positioning and pressing, the shaft cap and the pressing plate are arranged to prevent the radial direction and the axial direction of the shaft body from deviating due to long-time work, the pin seat and the shell are integrally formed, the occupied space is reduced, the components are reduced, and the stability and the firmness of the structure are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the structure schematic view of the utility model;

[0020] Figure 2 is the pin seat and the skeleton structure schematic view of the utility model;

[0021] Figure 3Is the gear seat structure schematic diagram of the utility model;

[0022] Figure 4 Is the shell structure schematic diagram of the utility model;

[0023] Figure 5 Is the shaft cap and shaft body structure schematic diagram of the utility model.

[0024] Fig. 1, stepper motor main body;2, shell;21, grounding groove;3, skeleton;31, fixed hole;4, gear seat;41, base;42, gear part;5, shaft body;6, shaft cap;61, fixed groove;62, step;7, pin seat;71, jack;8, pin;81, grounding pin;9, pressing plate. DETAILED DESCRIPTION

[0025] The following will disclose a plurality of embodiments of the utility model with drawings, for the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be drawn in a simple schematic way in the drawings.

[0026] It should be noted that all directional indications in the embodiments of the utility model, such as up, down, left, right, front, back, etc. are used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications will also change accordingly.

[0027] In addition, in addition to being used to indicate the orientation or position relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases, and those skilled in the art can understand the specific meaning of these terms in the utility model according to the specific situation.

[0028] In addition, the terms "mounting", "setting", "providing", "connecting", "connecting", "sleeving" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. The connection mode involved in this paper is prior art, without any improvement, and belongs to the common knowledge of those skilled in the art. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific situation.

[0029] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terminology and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] like Figures 1 to 5 As shown, this utility model provides

[0031] A stepper motor connection structure includes a stepper motor body 1, which comprises a housing 2 and a frame 3 disposed within the housing 2. A gear seat 4 is arranged within the frame 3. A shaft 5 passes through the center of the gear seat 4. A shaft cap 6 is arranged above the gear seat 4. One end of the shaft 5 is connected to the shaft cap 6. The shaft cap 6 and the shaft 5 are separately arranged on the stepper motor body 1. A pressure plate 9 is arranged on the housing 2. The pressure plate 9 is disposed on the shaft cap 6. An integrally formed pin socket 7 is arranged at any position outside the housing 2. By separately arranging the shaft cap 6 and the shaft 5 inside the frame 3 within the stepper motor body 1, the user can easily position them during installation, resulting in a better installation effect. The pressure plate 9 serves as a positioning and clamping mechanism. The shaft cap 6 and the pressure plate 9 prevent the radial and axial directions of the shaft 5 from shifting due to long-term operation. By making the pin socket 7 integrally formed with the housing 2, the space occupied is reduced, the number of parts is reduced, and the stability and robustness of the structure are improved.

[0032] A fixing hole 31 is arranged at the bottom of the frame 3; the shaft 5 is connected to the frame 3 through the fixing hole 31. By setting the fixing hole 31, the shaft 5 can pass through the gear seat 4 and be installed in the fixing hole 31, so that the fixing effect of the shaft 5 is better.

[0033] The top of the shaft cap 6 is provided with a fixing groove 61; the end of the shaft body 5 away from the fixing hole 31 is fixedly connected to the fixing groove 61; a step 62 is provided below the shaft cap 6. The fixing groove 61 is provided to fix the shaft body 5 and also to fix the shaft cap 6 at the upper end of the shaft body 5; the step 62 is provided to allow the shaft cap 6 to better fit the shaft body 5 for operation.

[0034] The gear base 4 comprises a base 41 and a gear part 42 arranged on the base 41; the gear part 42 is arranged in the shaft cap 6. The gear part 42 is arranged for cooperation rotation, and the base 41 is arranged for placing and fixing the gear part 42.

[0035] The pin seat 7 is provided with a pin hole 71; the pin 8 is arranged in the pin hole 71; the pin 8 is connected with the framework 3. The pin hole 71 is arranged for placing the pin hole 71; the pin 8 is arranged in the pin hole 71 by resistance welding.

[0036] The shell 2 is provided with a grounding groove 21; the pin 8 comprises a grounding pin 81; the grounding pin 81 is connected with the grounding groove 21. The grounding groove 21 and the grounding pin 81 are arranged for grounding and fixing the grounding pin 81.

[0037] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0038] In the present application, the standard parts used can be purchased from the market, and the special-shaped parts can be ordered according to the description and drawings. The specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding, sticking and the like in the prior art, which will not be described in detail here.

[0039] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and drawings. The specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding, sticking and the like in the prior art, which will not be described in detail here.

[0040] The above content is only the preferred embodiment of the present application. For ordinary skilled person in the art, according to the idea of the present application, various modifications and changes can be made in the specific implementation mode and application range, and the content of the present specification should not be understood as the limitation of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A connection structure of a stepping motor including a stepping motor main body, characterized by: The step motor body comprises a shell and a framework arranged in the shell; a gear base is arranged in the framework; a shaft body is arranged at the center of the gear base; a shaft cap is arranged above the gear base; one end of the shaft body is connected with the shaft cap; the shaft cap and the shaft body are arranged separately on the step motor body; a pressing plate is arranged on the shell; the pressing plate is arranged on the shaft cap; a one-piece pin seat is arranged at any position outside the shell.

2. The connection structure of a stepping motor according to claim 1, wherein: A fixing hole is arranged at the bottom of the framework; the shaft body is connected in the framework through the fixing hole.

3. The connection structure of a stepping motor according to claim 2, wherein: A fixing groove is arranged at the top end of the shaft cap; one end of the shaft body, which is away from the fixing hole, is fixedly connected with the fixing groove; a step is arranged below the shaft cap.

4. The connection structure of a stepping motor according to claim 3, wherein: The gear base comprises a base and a gear part arranged on the base; the gear part is arranged in the shaft cap.

5. The connection structure of a stepping motor according to claim 1, wherein: An insertion hole is arranged on the pin seat; an insertion pin is arranged in the insertion hole; the insertion pin is connected with the framework through the pin seat.

6. The connection structure of a stepping motor according to claim 5, wherein: A grounding groove is arranged on the shell; the insertion pin comprises a grounding pin; the grounding pin is connected with the grounding groove.

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