A positioning device for mounting a nut to a motor housing

Abstract

The application discloses a positioning device for mounting a nut to a motor shell and belongs to the technical field of motor assembly. The positioning device comprises a positioning rod, an extension rod and a limiting piece. The extension rod is in sliding fit with the positioning rod. The end of the extension rod, which is away from the positioning rod, is provided with a containing groove for placing and clamping the nut. The positioning rod is provided with a jacking part. The jacking part is in sliding fit with the extension rod. A limiting groove is formed in the outer wall surface of the positioning rod. The limiting piece is arranged on the outer wall surface of the extension rod and located in the limiting groove. When the nut is stuck due to damaged threads, the worker only needs to rotate the extension rod to move the limiting piece from the first position to the second position in the limiting groove. The jacking part can be inserted into the containing groove to push out the nut from the groove. The worker does not need to invert the positioning rod and the extension rod, so that the efficiency of motor shell assembly is improved.

Description

Technical Field

[0001] This application relates to the field of motor assembly technology, and more specifically, to a positioning device for installing a nut onto a motor housing. Background Technology

[0002] In daily life, workers usually place multiple nuts into receiving slots set on multiple rods. These receiving slots are used to fix the nuts. Workers then pass bolts through straight holes set on the motor housing to connect with the nuts and use an electric wrench to tighten the bolts and nuts.

[0003] When bolts and nuts are used together, some threads on the nuts or bolts may have problems, making it impossible to assemble the motor housing. In this case, the user will adjust the output end of the electric wrench to reverse so that the nut can be removed from the bolt. However, the nut located in the receiving groove is difficult to remove directly from the receiving groove because the depth of the receiving groove is usually the same as the thickness of the nut. Therefore, the worker can only invert the rod and rely on shaking or vibrating to make the nut fall off by gravity. This method of removing the nut from the receiving groove will reduce the assembly efficiency of the motor housing. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a positioning device for installing a nut onto a motor housing, comprising: a positioning rod, an extension rod, and a limiting member; the extension rod is slidably engaged with the positioning rod, and the end of the extension rod away from the positioning rod is provided with a receiving groove for placing and clamping the nut; the positioning rod is provided with a lifting portion, which is slidably engaged with the extension rod; a limiting groove is formed on the outer wall of the positioning rod, and the limiting member is disposed on the outer wall of the extension rod, and the limiting member is located within the limiting groove; when the limiting member is located in a first position within the limiting groove, the side of the lifting portion facing the receiving groove is flush with the bottom surface of the receiving groove or forms a gap with the bottom surface of the receiving groove; when the limiting member is located in a second position within the limiting groove by external force, the side of the lifting portion facing the receiving groove is located within the receiving groove or extends outside the receiving groove.

[0006] Furthermore, the motor housing is provided with a straight hole for bolts to pass through, and the two ends of the straight hole are provided with mounting surfaces; a positioning housing is provided between the side of the positioning rod facing the extension rod and the receiving groove; when the motor housing is placed in the positioning housing, the mounting surface is in contact with the groove surface of the receiving groove, and the straight hole coincides with the axis of the receiving groove.

[0007] Furthermore, the positioning housing is slidably connected to the extension rod; the extension rod is provided with a gripping part, the diameter of the gripping part is equal to the diameter of the positioning rod, and the side of the gripping part away from the positioning rod is in contact with the positioning housing.

[0008] Furthermore, the lifting part has an extension hole on the side facing the receiving groove, and the extension hole coincides with the axis of the receiving groove.

[0009] Furthermore, a fixing groove is also provided on the outer wall surface of the positioning rod, and the fixing groove is connected to the limiting groove; the fixing groove is the first position.

[0010] Furthermore, the extension rod is detachably connected to the limiting member.

[0011] Furthermore, the outer wall surface of the extension rod is provided with a threaded hole, and the limiting member is a lead screw or a bolt.

[0012] Furthermore, the number of the positioning rods and the extension rods matches the number of the straight holes.

[0013] Furthermore, the end of the positioning rod opposite to the extension rod is provided with a fixed seat, and the positioning rod is connected to the fixed seat.

[0014] The beneficial effects of this application are as follows:

[0015] With the sliding fit of the positioning rod and extension rod, and the design of the movable lifting part, when it is necessary to remove a nut stuck due to thread damage, the worker only needs to rotate the extension rod to move the limiting part from the first position in the limiting groove to the second position. Then, the lifting part can be inserted into the receiving groove to push the nut out of the groove. There is no need for the worker to invert the positioning rod and extension rod, or shake or vibrate the positioning rod and extension rod, thereby improving the efficiency of motor housing assembly. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the attached diagram:

[0019] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0020] Figure 2 yes Figure 1 The enlarged view of part A mainly shows the structure of the limiting groove and the fixing groove;

[0021] Figure 3 This is a structural schematic diagram as part of an embodiment, mainly showing the structure of the receiving tank, the lifting part, and the surrounding parts.

[0022] Figure label:

[0023] 1. Fixed base; 2. Positioning rod; 21. Limiting groove; 22. Fixing groove; 23. Lifting part; 3. Extension rod; 31. Receiving groove; 32. Grip part; 4. Limiting component; 5. Motor housing; 51. Straight hole; 6. Positioning housing. Detailed Implementation

[0024] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0025] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Reference Figure 1-3 ,

[0030] A positioning device for installing a nut onto a motor housing 5 includes: a positioning rod 2, an extension rod 3, and a limiting member 4; the extension rod 3 is slidably engaged with the positioning rod 2, and the end of the extension rod 3 away from the positioning rod 2 is provided with a receiving groove 31 for placing and clamping the nut; the receiving groove 31 is an internal hexagonal star or hexagonal, preferably hexagonal in this embodiment. The positioning rod 2 is fixedly provided with a lifting portion 23, which is a rod structure. The lifting portion 23 is slidably engaged with the extension rod 3. In this embodiment, the diameter of the lifting portion 23 is larger than the diameter of the threaded hole on the nut. A limiting groove 21 is provided on the outer wall of the positioning rod 2, and a limiting member 4 is provided on the outer wall of the extension rod 3, with the limiting member 4 located in the limiting groove 21. When the limiting member 4 is in the first position in the limiting groove 21, the side of the lifting part 23 facing the receiving groove 31 is flush with the bottom surface of the receiving groove 31 or forms a gap with the bottom surface of the receiving groove 31. When the limiting member 4 is in the second position in the limiting groove 21 by external force, the side of the lifting part 23 facing the receiving groove 31 is located in the receiving groove 31 or extends to the outside of the receiving groove 31. With the sliding fit of the positioning rod 2 and extension rod 3, and the design of the movable lifting part 23, when it is necessary to remove a nut stuck due to thread damage, the worker only needs to rotate the extension rod 3 to move the limiting part 4 from the first position in the limiting groove 21 to the second position. Then, the lifting part 23 can be inserted into the receiving groove 31 to push the nut out of the groove. There is no need for the worker to invert the positioning rod 2 and extension rod 3, or shake or vibrate the positioning rod 2 and extension rod 3, thereby improving the efficiency of assembling the motor housing 5.

[0031] Specifically, the motor housing 5 has a straight hole 51 for bolts to pass through, and mounting surfaces are provided at both ends of the straight hole 51; a positioning housing 6 is provided between the side of the positioning rod 2 facing the extension rod 3 and the receiving groove 31; when the motor housing 5 is placed in the positioning housing 6, the mounting surface contacts the groove surface of the receiving groove 31, and the axis of the straight hole 51 coincides with that of the receiving groove 31. The end of the extension rod 3 facing away from the positioning rod 2 is the groove surface of the receiving groove 31. When the user places the motor housing 5 to be assembled into the positioning housing 6, the straight hole 51 and the receiving groove 31 can be automatically aligned, thereby improving the assembly efficiency of the motor housing 5.

[0032] Specifically, the number of positioning rods 2 and extension rods 3 matches the number of straight holes 51. In this embodiment, there are four straight holes 51. When the user places the motor housing 5 inside the positioning housing 6, all four straight holes 51 can quickly align with the axes of the four receiving slots 31.

[0033] Specifically, the positioning housing 6 is slidably connected to the extension rod 3, allowing the user to rotate the extension rod 3 by external force. After rotating one of the extension rods 3, the lifting part 23 can push the nut out of the single receiving groove 31. The extension rod 3 is provided with a gripping part 32, which is a rod-shaped structure. In other embodiments, the gripping part 32 is a block-shaped structure. The diameter of the gripping part 32 is equal to the diameter of the positioning rod 2, and the side of the gripping part 32 facing away from the positioning rod 2 contacts the positioning housing 6. Specifically, a gap is formed between the side of the gripping part 32 facing the positioning rod 2 and the positioning rod 2 to prevent interference between the gripping part 32 and the positioning rod 2. When the nut is stuck in the receiving groove 31, the user needs to apply external force to the extension rod 3 so that the side of the lifting part 23 facing the receiving groove 31 can be inserted into the receiving groove 31. However, since the outer wall surface of the extension rod 3 is too smooth, a gripping part 32 is provided on the outer wall surface of the extension rod 3 for the user to grip.

[0034] Specifically, the lifting part 23 has an extension hole on the side facing the receiving groove 31. The extension hole coincides with the axis of the receiving groove 31 so that after the bolt and nut are tightened, the bolt head and the nut can contact the motor housing 5.

[0035] Specifically, a fixing groove 22 is also provided on the outer wall of the positioning rod 2, which communicates with the limiting groove 21; the fixing groove 22 is the first position. Specifically, when the limiting member 4 is placed in the fixing groove 22, a gap is formed between the side of the lifting part 23 facing the receiving groove 31 and the receiving groove 31. During use, the user needs to pull the extension rod 3 away from the positioning rod 2, so that the limiting member 4 is located in the limiting groove 21, and then rotate the extension rod 3 to place the limiting member 4 in the second position within the limiting groove 21. At this time, the extension rod 3 is affected by gravity and slides inward towards the positioning rod 2, and the side of the lifting part 23 facing the receiving groove 31 will push out the nut placed in the receiving groove 31, causing it to detach from the receiving groove 31. The fixing groove 22 is used to prevent the extension rod 3 from rotating relative to the positioning rod 2 during assembly.

[0036] Specifically, the extension rod 3 and the limiting member 4 are detachably connected.

[0037] Specifically, the outer wall of the extension rod 3 is provided with a threaded hole, and the limiting component 4 is a lead screw or a bolt. In this embodiment, the limiting component 4 is preferably a bolt. During assembly, the user can first insert the extension rod 3 into the positioning rod 2, and then use the lead screw or bolt to pass through the limiting groove 21 and thread it into the threaded hole. The operation is simple.

[0038] Specifically, a fixing seat 1 is provided at the end of the positioning rod 2 away from the extension rod 3, and the positioning rod 2 is fixedly connected to the fixing seat 1. The fixing seat 1 is provided to fix multiple positioning rods 2. At the same time, compared with the diameter of the positioning rod 2, the fixing seat 1 can have a larger contact area with the table when placed on the table, so that the positioning rod 2 will not wobble during the assembly process.

[0039] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A positioning device for mounting a nut to a motor housing, characterized by, include: Positioning rod, extension rod, and limiting element; The extension rod is slidably engaged with the positioning rod, and the end of the extension rod away from the positioning rod is provided with a receiving groove for placing and clamping the nut; The positioning rod is provided with a lifting part, which is slidably engaged with the extension rod; A limiting groove is formed on the outer wall surface of the positioning rod, and the limiting member is disposed on the outer wall surface of the extension rod, and the limiting member is located in the limiting groove; When the limiting member is located in the first position within the limiting groove, the side of the lifting part facing the receiving groove is flush with the bottom surface of the receiving groove or forms a gap with the bottom surface of the receiving groove; when the limiting member is located in the second position within the limiting groove by external force, the side of the lifting part facing the receiving groove is located within the receiving groove or extends outside the receiving groove.

2. The positioning device for installing a nut onto a motor housing according to claim 1, characterized in that: The motor housing has a straight hole for bolts to pass through, and the two ends of the straight hole have mounting surfaces; A positioning housing is provided between the side of the positioning rod facing the extension rod and the receiving groove; when the motor housing is placed in the positioning housing, the mounting surface is in contact with the groove surface of the receiving groove, and the straight hole coincides with the axis of the receiving groove.

3. The positioning device for installing a nut onto a motor housing according to claim 2, characterized in that: The positioning housing is slidably connected to the extension rod; The extension rod is provided with a gripping part, the diameter of which is equal to the diameter of the positioning rod, and the side of the gripping part away from the positioning rod is in contact with the positioning housing.

4. The positioning device for installing a nut onto a motor housing according to any one of claims 1-3, characterized in that: The lifting part has an extension hole on the side facing the receiving groove, and the extension hole coincides with the axis of the receiving groove.

5. The positioning device for installing a nut onto a motor housing according to claim 1, characterized in that: A fixing groove is also provided on the outer wall surface of the positioning rod, and the fixing groove is connected to the limiting groove; the fixing groove is the first position.

6. The positioning device for installing a nut onto a motor housing according to claim 1 or 5, characterized in that: The extension rod is detachably connected to the limiting member.

7. The positioning device for installing a nut onto a motor housing according to claim 6, characterized in that: The outer wall of the extension rod is provided with a threaded hole, and the limiting component is a lead screw or a bolt.

8. The positioning device for installing a nut onto a motor housing according to claim 2, characterized in that: The number of positioning rods and extension rods matches the number of straight holes.

9. The positioning device for installing a nut onto a motor housing according to claim 8, characterized in that: The positioning rod has a fixed seat at one end away from the extension rod, and the positioning rod is connected to the fixed seat.

Images