Press fitting clamp

Abstract

The utility model discloses a press fitting clamp which comprises a base, a sliding seat, a driving part and a press fitting assembly. The base is provided with a first sleeve, the first sleeve is used for positioning the driving part, the driving part is fixedly connected with the lower volute, and a rotating shaft of the driving part penetrates through the lower volute upwards. And the sliding seat is positioned above the base. The driving part is used for driving the sliding seat to move up and down to get close to or away from the base. The press-fitting assembly comprises a second sleeve, an ejector rod and a shifting piece, the second sleeve is fixedly connected to the sliding base, the ejector rod penetrates through the second sleeve, the ejector rod can slide in the vertical direction, the ejector rod and the rotating shaft are coaxially arranged, the ejector rod can be inserted into a shaft hole of the impeller to position the impeller, and the shifting piece is rotationally connected to the second sleeve; the shifting piece can rotate into the second sleeve to limit the impeller located in the second sleeve to move downwards or rotate out of the second sleeve. The press-fitting clamp is convenient to operate and capable of reducing the labor intensity of workers and improving the assembly accuracy, so that the production quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of press-fit clamps, in particular to a press-fit clamp. Background Art

[0002] In the press-fitting process of the impeller of the sweeping robot fan, the impeller and the volute need to be assembled together through the rotating shaft. First, the rotating shaft is connected to the lower volute through the bearing, and then the shaft hole of the impeller is aligned with the rotating shaft and the shaft hole is sleeved on the rotating shaft, so that the rotating shaft and the shaft hole of the impeller are interference-fitted to be relatively fixed, and finally the upper volute and the lower volute are assembled together. When assembling the impeller and the rotating shaft, the operator needs to press-fit manually, which is time-consuming and labor-intensive, and may cause inaccurate alignment, resulting in low installation accuracy, affecting production quality and efficiency. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model provides a press-fitting fixture.

[0004] The embodiment of the utility model provides a press-fitting fixture for press-fitting an impeller on a lower volute, wherein the lower volute is fixedly connected to a driving part, and the press-fitting fixture comprises:

[0005] The base is provided with a first sleeve, the first sleeve is used to position the driving part, and the rotating shaft of the driving part is upwardly penetrated through the lower volute;

[0006] A sliding seat, located above the base;

[0007] A driving component, used for driving the slide to move in the up and down direction to approach or move away from the base;

[0008] A press-fit assembly, comprising a second sleeve, a push rod and a paddle, wherein the second sleeve is fixedly connected to the slide seat, the push rod is inserted into the second sleeve, the push rod can slide in the up and down directions, the push rod is coaxially arranged with the rotating shaft, the push rod can be inserted into the shaft hole of the impeller to position the impeller, and the paddle is rotatably connected to the second sleeve;

[0009] The paddle can be rotated into the second sleeve to restrict the impeller in the second sleeve from moving downward to escape from the second sleeve, or rotated out of the second sleeve to allow the impeller in the second sleeve to move downward to escape from the second sleeve.

[0010] The press-fitting fixture according to the embodiment of the utility model has at least the following technical effects: when press-fitting is required, the driving part and the lower volute are fixedly connected, the driving part is placed on the first sleeve to position the driving part, the impeller is placed in the second sleeve and the push rod is inserted into the axial hole of the impeller to position the impeller, the paddle is rotated so that the paddle enters the second sleeve and is located below the impeller, thereby preventing the impeller from moving downward and falling, and the driving component drives the slide seat to move downward so that the upper end of the rotating shaft is inserted into the axial hole of the impeller, thereby completing the assembly between the impeller and the lower volute; the press-fitting fixture is easy to operate and reduces manual labor intensity, improves assembly accuracy, and thus improves production quality and production efficiency.

[0011] According to some embodiments of the utility model, the slide seat is provided with a receiving cavity, a first spring is provided in the receiving cavity, the upper end of the push rod is inserted into the receiving cavity, and the lower end of the first spring is connected to the push rod.

[0012] According to some embodiments of the utility model, a limiting ring is provided at the upper end of the push rod, and the limiting ring is arranged in the accommodating cavity. The limiting ring can abut against the lower inner wall of the accommodating cavity to limit the downward movement of the push rod.

[0013] According to some embodiments of the utility model, a boss is provided in the middle of the second sleeve, the boss extends downward, the boss is provided with a first through hole extending in the up-down direction, and the push rod is passed through the first through hole.

[0014] According to some embodiments of the present invention, the outer peripheral wall of the second sleeve is provided with a second through hole extending in the circumferential direction, the paddle is hinged to the second sleeve, and the paddle can pass through the second through hole to enter the inner cavity of the second sleeve or leave the second sleeve.

[0015] According to some embodiments of the utility model, the rotating shaft includes a first shaft segment and a second shaft segment, the first shaft segment is located above the second shaft segment, the diameter of the first shaft segment is θ1, the diameter of the second shaft segment is θ2, the diameter of the push rod is θ3, and the diameter of the impeller shaft hole is θ4, satisfying: θ1<θ3<θ4<θ2.

[0016] According to some embodiments of the utility model, the base is provided with a column extending in the up-down direction, the slide seat is sleeved on the column and can slide in the up-down direction, and the second spring is sleeved on the column and located between the slide seat and the base.

[0017] According to some embodiments of the present utility model, the driving component is a driving motor or a cylinder, and the driving end of the driving component is connected to the sliding seat.

[0018] According to some embodiments of the present invention, the height of the impeller is H1, the height of the hub of the impeller is H2, and the height of the boss is H3, satisfying: H1-H2<H3.

[0019] According to some embodiments of the present utility model, when the push rod slides downward to the lowest point relative to the boss, the lowermost end of the push rod is located below the boss.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the structure of the press-fitting fixture of some embodiments of the utility model;

[0023] Figure 2 It is an exploded view of the press-fitting fixture for press-fitting the impeller and the lower volute in some embodiments of the utility model;

[0024] Figure 3 is a cross-sectional view of a press-fit fixture of some embodiments of the utility model;

[0025] Figure 4 It is a schematic structural diagram of the press-fitting fixture of some embodiments of the utility model before press-fitting;

[0026] Figure 5 It is a schematic diagram of the structure of the press-fitting fixture after press-fitting of some embodiments of the utility model;

[0027] Figure 6 It is a schematic diagram of the installation of the upper volute and the lower volute in some embodiments of the utility model.

[0028] Figure Number:

[0029] Impeller 100, shaft hole 110, hub 120, lower volute 130, upper volute 140;

[0030] Base 200, first sleeve 210, driving part 220, rotating shaft 230, first shaft section 231, second shaft section 232, column 240, second spring 250;

[0031] Sliding seat 300, accommodating cavity 310, first spring 320;

[0032] The press-fit assembly 400 , the second sleeve 410 , the boss 420 , the first through hole 421 , the second through hole 430 , the ejector rod 440 , the limiting ring 441 , and the paddle 450 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0038] According to some embodiments of the present invention, referring to Figures 1 to 4The press-fitting fixture includes a base 200, a slide 300, a driving component and a press-fitting assembly 400. The base 200 is provided with a first sleeve 210, the opening of the first sleeve 210 faces upward, and the first sleeve 210 is used to position the driving part 220. When the driving part 220 is placed on the first sleeve 210, the inner circumferential wall of the first sleeve 210 can limit the driving part 220 from moving in the horizontal direction. The driving part 220 is fixedly connected to the lower volute 130, and the rotating shaft 230 of the driving part 220 is upwardly penetrated in the lower volute 130. The slide 300 is located above the base 200. The driving component can drive the slide 300 to move in the up and down direction to approach or move away from the base 200. The press-fitting assembly 400 includes a second sleeve 410, a push rod 440 and a paddle 450. The second sleeve 410 is fixedly connected to the lower end surface of the slide 300, and the opening of the second sleeve 410 faces downward. The push rod 440 is inserted into the second sleeve 410, and the push rod 440 is slidably connected to the slide seat 300. The axis direction of the push rod 440 is the up-down direction, and the push rod 440 can slide in the up-down direction. The push rod 440 is coaxially arranged with the rotating shaft 230. The push rod 440 can be inserted into the shaft hole 110 of the impeller 100 to position the impeller 100. The paddle 450 is rotatably connected to the second sleeve 410. The paddle 450 can be rotated into the second sleeve 410 to limit the impeller 100 located in the second sleeve 410 from moving downward; the paddle 450 can also be rotated outside the second sleeve 410, so that the impeller 100 located in the second sleeve 410 can move downward relative to the second sleeve 410 to disengage from the second sleeve 410.

[0039] It is understandable that, referring to Figures 2 to 6 When press-fitting is required, the driving part 220 and the lower volute 130 are fixedly connected by bolts, and then the driving part 220 is placed on the first sleeve 210 to position the driving part 220, thereby limiting the movement of the driving part 220; the impeller 100 is placed in the second sleeve 410 and the push rod 440 is inserted into the shaft hole 110 of the impeller 100 to position the impeller 100, and the lower end of the push rod 440 is located in the shaft hole 110 but does not pass through the shaft hole 110; the paddle 450 is rotated so that the paddle 450 enters the second sleeve 410 and is located below the impeller 100, In order to prevent the impeller 100 from moving downward and falling, the driving component drives the slide 300 to move downward so that the upper end of the rotating shaft 230 is inserted into the axial hole 110 of the impeller 100, and the axial hole 110 and the rotating shaft 230 are interference fit, and then the paddle 450 is rotated to rotate the paddle 450 to the outside of the second sleeve 410, and the slide 300 and the second sleeve 410 move upward to return to the initial position, and the impeller 100 is separated from the second sleeve 410, thereby completing the assembly between the impeller 100 and the lower volute 130, and then the upper volute 140 and the lower volute 130 are installed together.

[0040] Preferably, refer to Figure 6The upper volute 140 and the lower volute 130 are relatively fixed by means of a snap connection.

[0041] The press-fitting fixture is easy to operate and reduces manual labor intensity, thereby improving assembly accuracy and thus improving production quality and production efficiency.

[0042] According to some embodiments of the present invention, referring to Figures 3 to 5 The slide seat 300 is provided with a receiving chamber 310, a first spring 320 is provided in the receiving chamber 310, the upper end of the ejector rod 440 is inserted into the receiving chamber 310, and the lower end of the first spring 320 is connected to the ejector rod 440. A limiting ring 441 is provided at the upper end of the ejector rod 440, and the limiting ring 441 is provided in the receiving chamber 310. The limiting ring 441 can abut against the lower inner wall of the receiving chamber 310 to limit the ejector rod 440 from moving downward.

[0043] It can be understood that when the upper end of the rotating shaft 230 is inserted into the axial hole 110, the rotating shaft 230 pushes the push rod 440 upward, so that the push rod 440 moves upward relative to the sliding seat 300 and compresses the first spring 320, the push rod 440 leaves the axial hole 110, and the rotating shaft 230 is upwardly penetrated into the axial hole 110 to complete the press-fitting of the impeller 100 and the lower volute 130; when the sliding seat 300 moves upward to the initial position, the push rod 440 moves back to the initial position under the action of the first spring 320 and gravity.

[0044] According to some embodiments of the present invention, referring to Figures 3 to 5 A boss 420 is provided in the middle of the second sleeve 410, and the boss 420 extends downward. The boss 420 is provided with a first through hole 421 extending in the up-down direction, and the push rod 440 is passed through the first through hole 421. The inner peripheral wall of the boss 420 can limit the movement of the push rod 440 to prevent the push rod 440 from running off, and the lower end surface of the boss 420 can abut against the upper end surface of the hub 120 to complete the positioning of the impeller 100 and improve the assembly accuracy.

[0045] Reference Figures 1 to 3 The base 200 is provided with a column 240 extending in the up-down direction, the second spring 250 is sleeved on the column 240, the slide 300 is sleeved on the column 240 and can slide in the up-down direction, and the second spring 250 is located between the slide 300 and the base 200. The driving component is a motor or a cylinder, and the driving component can drive the slide 300 to move downward to compress the second spring 250. When the press-fitting is completed, the second spring 250 can push the slide 300 to move upward.

[0046] It should be noted that the driving component may also be human power, which directly presses the slide seat 300 downward to press the impeller 100 and the lower volute 130 .

[0047] According to some embodiments of the present invention, referring to Figures 3 to 5 The outer wall of the second sleeve 410 is provided with a second through hole 430 extending in the circumferential direction. The paddle 450 is hinged to the second sleeve 410. The paddle 450 can pass through the second through hole 430 to enter the inner cavity of the second sleeve 410 or leave the second sleeve 410. When the impeller 100 is placed in the second sleeve 410, the paddle 450 enters the inner cavity of the second sleeve 410. The paddle 450 is located below the impeller 100 to prevent the impeller 100 from falling off downward.

[0048] It is understandable that when the impeller 100 and the lower volute 130 are press-fitted, the impeller 100 and the rotating shaft 230 are interference-fitted, and the paddle 450 is located between the impeller 100 and the lower volute 130. The thickness of the paddle 450 is the gap between the impeller 100 and the lower volute 130. By changing the thickness of the paddle 450, the size of the gap between the impeller 100 and the lower volute 130 can be adjusted to meet various production requirements. Preferably, the thickness of the paddle 450 in the up-down direction is H5, which satisfies: 1mm<H5<3mm.

[0049] According to some embodiments of the present invention, referring to Figure 4 The rotating shaft 230 includes a first shaft section 231 and a second shaft section 232. The first shaft section 231 is located above the second shaft section 232. The diameter of the first shaft section 231 is θ1, the diameter of the second shaft section 232 is θ2, the diameter of the push rod 440 is θ3, and the diameter of the shaft hole 110 of the impeller 100 is θ4, satisfying: θ1<θ3<θ4<θ2. The arrangement of the first shaft section 231 and the second shaft section 232 can facilitate the rotating shaft 230 to be inserted into the shaft hole 110 and achieve an interference fit. The diameter of the push rod 440 is smaller than the diameter of the shaft hole 110 to avoid the push rod 440 and the impeller 100 being relatively fixed. The push rod 440 has a positioning function.

[0050] Preferably, the diameter of the top rod 440 is θ3, and the diameter of the shaft hole 110 of the impeller 100 is θ4, satisfying: 0<θ4-θ3<1mm.

[0051] According to some embodiments of the present invention, referring to Figure 5 The height of the impeller 100 is H1, the height of the hub 120 of the impeller 100 is H2, and the height of the boss 420 is H3, which satisfies: H1-H2<H3, thereby preventing the upper end of the impeller 100 from colliding and interfering with the inner wall of the upper side of the second sleeve 410 to damage the impeller 100, and at the same time ensuring that the push rod 440 can be smoothly inserted into the shaft hole 110 of the impeller 100 to position the impeller 100. Preferably, it satisfies: H1-H2+2mm<H3

[0052] According to some embodiments of the present invention, referring to Figure 5 ​When the push rod 440 slides downward to the lowest position relative to the boss 420, the lowest end of the push rod 440 is located below the boss 420, and the vertical distance between the lowest end of the push rod 440 and the lowest end of the boss 420 is H4, which satisfies: 5mm<H4<10mm. This ensures that the push rod 440 can be smoothly inserted into the shaft hole 110 of the impeller 100 to position the impeller 100.

[0053] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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 one or more embodiments or examples in a suitable manner.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A press-fitting fixture, used for press-fitting an impeller (100) onto a lower volute (130), wherein the lower volute (130) is fixedly connected to a driving unit (220), characterized in that: The press-fit fixture comprises: The base (200) is provided with a first sleeve (210), wherein the first sleeve (210) is used to position the driving part (220), and the rotating shaft (230) of the driving part (220) is upwardly penetrated through the lower volute (130); A sliding seat (300) is located above the base (200); A driving component, used for driving the slide seat (300) to move in an up-down direction to approach or move away from the base (200); A press-fit assembly (400), comprising a second sleeve (410), a push rod (440) and a paddle (450), wherein the second sleeve (410) is fixedly connected to the slide seat (300), the push rod (440) is inserted into the second sleeve (410), the push rod (440) can slide in the up and down directions, the push rod (440) is coaxially arranged with the rotating shaft (230), the push rod (440) can be inserted into the shaft hole (110) of the impeller (100) to position the impeller (100), and the paddle (450) is rotatably connected to the second sleeve (410); The paddle (450) can be rotated into the second sleeve (410) to restrict the impeller (100) in the second sleeve (410) from moving downward to escape from the second sleeve (410), or rotated outside the second sleeve (410) to enable the impeller (100) in the second sleeve (410) to move downward to escape from the second sleeve (410).

2. The press-fitting fixture according to claim 1, characterized in that: The slide seat (300) is provided with a receiving cavity (310), a first spring (320) is provided in the receiving cavity (310), the upper end of the push rod (440) is inserted into the receiving cavity (310), and the lower end of the first spring (320) is connected to the push rod (440).

3. The press-fitting fixture according to claim 2, characterized in that: A limiting ring (441) is provided at the upper end of the push rod (440), and the limiting ring (441) is arranged in the accommodating cavity (310). The limiting ring (441) can abut against the lower inner wall of the accommodating cavity (310) to limit the downward movement of the push rod (440).

4. The press-fitting fixture according to claim 1, characterized in that: A boss (420) is provided in the middle of the second sleeve (410), the boss (420) extends downward, the boss (420) is provided with a first through hole (421) extending in the up-down direction, and the push rod (440) is passed through the first through hole (421).

5. The press-fitting fixture according to claim 1, characterized in that: The outer peripheral wall of the second sleeve (410) is provided with a second through hole (430) extending in the circumferential direction, and the paddle (450) is hinged to the second sleeve (410), and the paddle (450) can pass through the second through hole (430) to enter the inner cavity of the second sleeve (410) or leave the second sleeve (410).

6. The press-fitting fixture according to claim 1, characterized in that: The rotating shaft (230) comprises a first shaft section (231) and a second shaft section (232), the first shaft section (231) is located above the second shaft section (232), the diameter of the first shaft section (231) is θ1, the diameter of the second shaft section (232) is θ2, the diameter of the push rod (440) is θ3, and the diameter of the shaft hole (110) of the impeller (100) is θ4, satisfying the following relationship: θ1<θ3<θ4<θ2.

7. The press-fitting fixture according to claim 1, characterized in that: The base (200) is provided with a column (240) extending in the up-down direction, the slide seat (300) is sleeved on the column (240) and can slide in the up-down direction, and the second spring (250) is sleeved on the column (240) and is located between the slide seat (300) and the base (200).

8. The press-fitting fixture according to claim 7, characterized in that: The driving component is a driving motor or a cylinder, and a driving end of the driving component is connected to the slide seat.

9. The press-fitting fixture according to claim 4, characterized in that: The height of the impeller (100) is H1, the height of the hub (120) of the impeller (100) is H2, and the height of the boss (420) is H3, satisfying: H1-H2<H3.

10. The press-fitting fixture according to claim 4, characterized in that: When the push rod (440) slides downward to the lowest position relative to the boss (420), the lowest end of the push rod (440) is located below the boss (420).

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