Rivet turning device for inner hole of annular part
By designing the inner hole rivet device of the annular parts, the combination of the internal expansion sleeve and the tie rod is used to solve the problem of flange riveting between the annular parts and the rubber parts, and convenient combination assembly and multiple uses are achieved.
Patent Information
- Application Number
- CN202422033444.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The prior art is difficult to achieve flange and riveting between annular parts and annular rubber parts, resulting in increased difficulty in combining assembly.
A riveting device for the inner hole of an annular part is designed. Through the cooperation of the inner expansion sleeve and the pull rod, the inner expansion sleeve is expanded in the axial direction by using the action of the spring and the telescope, thereby realizing the flange riveting of the parts.
It realizes convenient flip-rigging and riveting between ring parts and rubber parts, ensuring tight combinations, avoiding disengagement, and easy operation, and is suitable for multiple uses.
Smart Images
Figure CN223277499U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch parts processing and manufacturing, in particular to a riveting device for the inner hole of an annular part. Background Art
[0002] During the processing of switch parts, many parts need to be assembled by flanging and riveting. Part one is an annular metal part, and part two is an annular rubber material. An annular groove is processed on the inner wall of the hole of part one for installation with part two. At the same time, part two is flipped and deformed in the annular groove so that the two are tightly buckled and do not separate. At the same time, the hole at one end of part one is sealed to prevent water from seeping in from the closed hole of part one.
[0003] However, when the opening at one end of part two is closed, the opening at one end of part one is also sealed, so the general flanging riveting tool cannot be used for flanging riveting, thereby increasing the difficulty of making the flanging riveting tool and performing the riveting work on the target component. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a riveting device for the inner hole of an annular part.
[0005] The utility model is achieved through the following technical solutions.
[0006] The utility model provides a riveting device for the inner hole of an annular part, comprising a mounting panel, an internal expansion sleeve mounting seat being provided on the mounting panel, a slide groove being provided on the internal expansion sleeve, a pull rod being slidably provided in the internal expansion sleeve, an expansion end being provided at one end of the pull rod, the expansion end being gap-matched with the inner side wall of the internal expansion sleeve, and a telescopic mechanism being provided at the end of the pull rod away from the expansion end.
[0007] Preferably, the internal expansion sleeve comprises an expansion portion and a sliding portion, the sliding portion is in clearance fit with the slide groove, and the expansion portion is placed outside the slide groove.
[0008] Preferably, the expansion portion includes a clamping section and an expansion section, one end of the expansion section away from the clamping section is connected to the sliding portion, and a reverse arc is provided on the outer peripheral side of the expansion section close to the end of the clamping section.
[0009] Preferably, the sliding portion includes a first sliding section and a second sliding section, the cross-sectional diameter of the first sliding section is greater than the cross-sectional diameter of the second sliding section, the end of the first sliding section away from the second sliding section is connected to the expansion portion, and the end of the second sliding section away from the first sliding section is passed through a sliding groove; a spring is sleeved on the second sliding section, one end of the spring is connected to the first sliding section, and the other end is connected to the inner wall of the sliding groove.
[0010] Preferably, the telescopic mechanism includes a telescope and a telescope mounting seat, the telescope mounting seat is fixedly connected to the mounting panel, the telescope is connected to the telescope mounting seat, and the end of the pull rod away from the extension end is connected to the telescope.
[0011] Preferably, the pull rod includes a connecting portion and a clamping portion, the cross-sectional diameter of the clamping portion is greater than the cross-sectional diameter of the connecting portion, and the end of the clamping portion away from the connecting portion is connected to the expansion end; an annular clamping groove is provided on the inner side wall of the first sliding section close to one end of the expansion portion, the clamping portion slides through the annular clamping groove, and the end of the connecting portion away from the clamping portion slides through the inner expansion sleeve and is connected to the telescope.
[0012] Preferably, one end of the second sliding section away from the first sliding section is provided with a sliding groove and is threadedly sleeved with a limiting nut.
[0013] Preferably, the extended end is configured to be truncated cone-shaped.
[0014] Preferably, the outer surface of the clamping section is cylindrical.
[0015] The beneficial effects of the present invention are as follows: by arranging component one and component two on the expansion part, and pulling the pull rod toward the direction of the telescope through the telescope, the inner expansion sleeve is in a stationary state in the axial direction because the force exerted by the spring on the inner expansion sleeve is greater than the pulling force of the pull rod on the inner expansion sleeve. At this time, as the pull rod moves, the expansion end expands in the radial direction of the expansion part, and component one and component two are fitted and pressed tightly against the expansion part; the telescope then pulls the pull rod toward the telescope, and the pulling force of the pull rod on the inner expansion sleeve is greater than the force of the spring, so that the pull rod pulls the inner expansion sleeve to move along its axial direction, and the expansion end expands the expansion part. At the same time, the outer side of the expansion part also performs flange deformation on component two, so that the flange of component two is riveted tightly to component one, so that they are interlocked with each other to prevent separation, thereby realizing the flange riveting work of the target component, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the utility model;
[0017] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model;
[0018] Figure 3 This is a partial cross-sectional structural diagram mainly used to illustrate the structures of the internal expansion sleeve, the pull rod and the limit nut in the present invention;
[0019] Figure 4 It is an enlarged schematic diagram of part I of the utility model;
[0020] Figure 5This is a schematic diagram of the cross-sectional structure of the utility model mainly used to show part one and part two;
[0021] Explanation of the accompanying drawings: 1-part one; 2-part two; 3-pull rod; 31-connecting part; 32-clamping part; 33-expansion end; 4-inner expansion sleeve; 41-expansion part; 411-expansion section; 412-clamping section; 42-sliding part; 421-first sliding section; 422-second sliding section; 5-inner expansion sleeve mounting seat; 6-mounting panel; 7-spring; 8-limiting nut; 9-expansion device mounting seat; 10-expansion device; 11-slide groove; 12-annular limiting groove; 13-annular clamping groove. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0024] In the examples of this application, refer to Figure 1 and Figure 2 , including a mounting panel 6, on which the internal expansion sleeve mounting seat 5 is mounted by multiple screws. A slide groove 11 is provided on the internal expansion sleeve mounting seat 5, and an annular limiting groove 12 is provided on the inner side wall of the slide groove 11. The internal expansion sleeve 4 is passed through the slide groove 11. The internal expansion sleeve 4 includes an expansion portion 41 and a sliding portion 42, and the sliding portion 42 is clearance-matched with the slide groove 11; the expansion portion 41 is placed outside the slide groove 11, and the inner side wall of the expansion portion 41 is frustum-shaped.
[0025] In the examples of this application, refer to Figure 3 and Figure 4 The expansion portion 41 includes a clamping section 412 and an expansion section 411. The end of the expansion section 411 away from the clamping section 412 is connected to the sliding portion 42, and a reverse arc is provided on the outer peripheral side of the expansion section 411 close to the end of the clamping section 412; the outer surface of the clamping section 412 is cylindrical, which facilitates the flanging riveting of the target component under the joint action of the clamping section 412 and the expansion section 411.
[0026] In the examples of this application, refer to Figure 2 and Figure 3The sliding portion 42 includes a first sliding section 421 and a second sliding section 422. The cross-sectional diameter of the first sliding section 421 is greater than the cross-sectional diameter of the second sliding section 422. The end of the first sliding section 421 away from the second sliding section 422 is integrally connected to the expansion section 411. The end of the second sliding section 422 away from the first sliding section 421 is provided with a sliding groove 11 and a limit nut 8 is threadedly sleeved thereon, so as to facilitate the axial position limitation of the internal expansion sleeve 4.
[0027] A spring 7 is sleeved on the second sliding section 422, one end of the spring 7 is fixedly connected to the cross section of the first sliding section 421, and the other end is fixedly connected to the side wall of the annular limiting groove 12, exerting a certain force on the internal expansion sleeve 4, facilitating the expansion of the expansion section 411, helping the internal expansion sleeve 4 to fit tightly against the target component, and at the same time helping the internal expansion sleeve 4 to reset and protect the internal expansion sleeve 4.
[0028] In the examples of this application, refer to Figure 3 A pull rod 3 is slidably provided in the inner expansion sleeve 4, and the pull rod 3 includes a connecting portion 31 and a clamping portion 32. The cross-sectional diameter of the clamping portion 32 is greater than the cross-sectional diameter of the connecting portion 31, and the end of the clamping portion 32 away from the connecting portion 31 is integrally connected with the expansion end 33, and the expansion end 33 is set to be frustum-shaped. The expansion end 33 is clearance-matched with the inner side of the expansion portion 41, which helps to achieve the expansion of the expansion section 411 by the expansion end 33; the inner side wall of the first sliding section 421 near one end of the expansion section 411 is provided with an annular clamping groove 13, and the clamping portion 32 slides through the annular clamping groove 13, and the end of the connecting portion 31 away from the clamping portion 32 slides out of the inner expansion sleeve 4, and the end of the connecting portion 31 away from the clamping portion 32 slides out of the inner expansion sleeve 4 and is provided with a telescopic mechanism.
[0029] In the examples of this application, refer to Figure 2 The telescopic mechanism includes a telescope 10 and a telescope mounting seat 9. The telescope mounting seat 9 is fixedly connected to the mounting panel 6 by multiple screws. The telescope 10 is fixedly connected to the telescope mounting seat 9. The end of the connecting part 31 away from the clamping part 32 is connected to the telescope 10. The telescopic direction of the telescope 10 is set in the same direction as the length direction of the pull rod 3.
[0030] In the examples of this application, refer to Figure 2 and Figure 5, through the operation of the telescopic device 10, when the pull rod 3 is pulled to move in the direction of the telescopic device 10, the internal expansion sleeve 4 is in a stationary state in the axial direction due to the force of the spring 7. As the expansion end 33 moves, the expansion portion 41 gradually expands in the radial direction, so that the part 2 2 is closer to the part 1 1; as the pull rod 3 moves further in the direction of the telescopic device 10, the pulling force of the pull rod 3 gradually becomes greater than the force of the spring 7 on the internal expansion sleeve 4, the pull rod 3 pulls the internal expansion sleeve 4 to move, and at the same time the expansion portion 41 is also expanded to a certain extent, so that the part 1 and the part 2 2 are more closely pressed against each other, and the expansion portion 41 is also deformed on the part 1, so as to realize the flanging riveting of the part 2 2 on the part 1 1.
[0031] When the telescopic device 10 pushes the pull rod 3 to move away from the telescopic device 10, the internal expansion sleeve 4 is no longer subjected to the tension of the pull rod 3. The internal expansion sleeve 4 is pushed back to its original position by the force of the spring 7, so that the pull rod 3 and the internal expansion sleeve 4 are restored to their original positions, which is convenient for the next flanging riveting work on the target component. When it is difficult to achieve better flanging deformation of the target component by one flanging riveting, it can be repeated multiple times to achieve flanging riveting of the target component.
[0032] The working principle of this embodiment is as follows: Part 1 and Part 2 2 are sleeved onto the expansion portion 41, and the expander 10 pulls the pull rod 3 toward the expander 10. Because the force exerted by the spring 7 on the internal expansion sleeve 4 is greater than the pulling force exerted by the pull rod 3 on the internal expansion sleeve 4, the internal expansion sleeve 4 is axially stationary. At this time, as the pull rod 3 moves, the expansion end 33 expands radially toward the expansion portion 41, pressing Part 1 1 and Part 2 2 against the expansion portion 41. The expander 10 then pulls the pull rod 3 toward the expander 10. The pulling force exerted by the pull rod 3 on the internal expansion sleeve 4 is greater than the force exerted by the spring 7, causing the pull rod 3 to pull the internal expansion sleeve 4 axially. The expansion end 33 expands the expansion portion 41, and simultaneously deforms the outer side of the expansion portion 41 by flanging Part 2 2, causing the flanging of Part 2 2 to be riveted to Part 1 1. When the telescopic device 10 pushes the pull rod 3 to move away from the telescopic device 10, the internal expansion sleeve 4 is no longer subjected to the pulling force of the pull rod 3, and the internal expansion sleeve 4 is pushed back to its original position by the force of the spring 7, so that the pull rod 3 and the internal expansion sleeve 4 are restored to their original positions, which facilitates repeated flanging deformation work on the target component, so that they are interlocked with each other to prevent separation, realize the flanging riveting of part 1 and part 2, and make the combination of the two more fit, avoid the possibility of deformation in subsequent use as much as possible, and operate conveniently.
[0033] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.
Claims
1. A riveting device for the inner hole of an annular part, characterized by: The invention comprises a mounting panel (6), an internal expansion sleeve mounting seat (5) is provided on the mounting panel (6), a slide groove (11) is provided on the internal expansion sleeve mounting seat (5), an internal expansion sleeve (4) is passed through the slide groove (11), a pull rod (3) is slidably passed through the internal expansion sleeve (4), an extension end (33) is provided at one end of the pull rod (3), the extension end (33) is in clearance fit with the inner side wall of the internal expansion sleeve (4), and a telescopic mechanism is provided at the end of the pull rod (3) away from the extension end (33).
2. A riveting device for the inner hole of an annular part according to claim 1, characterized in that: The internal expansion sleeve (4) comprises an expansion portion (41) and a sliding portion (42), wherein the sliding portion (42) is clearance-matched with the slide groove (11), and the expansion portion (41) is placed outside the slide groove (11).
3. A riveting device for the inner hole of an annular part according to claim 2, characterized in that: The expansion portion (41) comprises a clamping section (412) and an expansion section (411), one end of the expansion section (411) away from the clamping section (412) is connected to the sliding portion (42), and a reverse arc is provided on the outer peripheral side of the expansion section (411) near one end of the clamping section (412).
4. The riveting device for the inner hole of an annular part according to claim 2, characterized in that: The sliding portion (42) includes a first sliding section (421) and a second sliding section (422), the cross-sectional diameter of the first sliding section (421) is greater than the cross-sectional diameter of the second sliding section (422), one end of the first sliding section (421) away from the second sliding section (422) is connected to the expansion portion (41), and one end of the second sliding section (422) away from the first sliding section (421) is provided with a sliding groove (11); a spring (7) is sleeved on the second sliding section (422), one end of the spring (7) is connected to the first sliding section (421), and the other end is connected to the inner wall of the sliding groove (11).
5. The riveting device for the inner hole of an annular part according to claim 1, characterized in that: The telescopic mechanism comprises a telescope (10) and a telescope mounting seat (9), wherein the telescope mounting seat (9) is fixedly connected to the mounting panel (6), the telescope (10) is connected to the telescope mounting seat (9), and the end of the pull rod (3) away from the extension end (33) is connected to the telescope (10).
6. The riveting device for the inner hole of an annular part according to claim 4, characterized in that: The pull rod (3) includes a connecting portion (31) and a clamping portion (32), the cross-sectional diameter of the clamping portion (32) is greater than the cross-sectional diameter of the connecting portion (31), and the end of the clamping portion (32) away from the connecting portion (31) is connected to the expansion end (33); an annular clamping groove (13) is provided on the inner side wall of the first sliding section (421) close to one end of the expansion portion (41), and the clamping portion (32) slides through the annular clamping groove (13), and the end of the connecting portion (31) away from the clamping portion (32) slides through the inner expansion sleeve (4) and is connected to the telescopic device (10).
7. The riveting device for the inner hole of an annular part according to claim 4, characterized in that: An end of the second sliding section (422) away from the first sliding section (421) is provided with a sliding groove (11) and is threadedly sleeved with a limiting nut (8).
8. The riveting device for the inner hole of an annular part according to claim 1, characterized in that: The extended end (33) is configured in a truncated cone shape.
9. The riveting device for the inner hole of an annular part according to claim 3, characterized in that: The outer surface of the clamping section (412) is cylindrical.