Adjustable pressing rivet screw fastening device

Abstract

The utility model relates to an adjustable press-riveting screw fastening device which comprises a press-riveting head and a protruding part fixedly connected to the bottom of the press-riveting head, a fixing ring is fixedly connected to the bottom of the press-riveting head, a screw rod is movably connected in the fixing ring, a plurality of clamping grooves are formed in the outer surface of the screw rod, and the protruding part is fixedly connected to the bottom of the press-riveting head. A plurality of clamping grooves are vertically and uniformly arranged corresponding to the multiple clamping grooves, a plurality of cavities are formed in the fixing ring, elastic plates are fixedly connected to the inner side walls of the cavities, the elastic plates are arranged in an arc shape, clamping blocks are fixedly connected to the sides, close to the screw rods, of the elastic plates, and the clamping blocks penetrate through the inner side walls of the cavities in a sliding mode; and the clamping blocks are partially inserted into the corresponding clamping grooves. The utility model relates to the technical field of pressing rivet screws. When a batch of pressing rivet screws are adjusted, the clamping blocks in the batch of pressing rivet screws are inserted into the clamping grooves at the same positions, so that the lengths of the batch of pressing rivet screws are equal, the lengths of the pressing rivet screws are easier to control, and the batch standard of the pressing rivet screws is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of self-clinching screws, in particular to an adjustable self-clinching screw fastening device. Background Art

[0002] Compression rivet screws are fasteners used for compression riveting. During installation, the bolt rod of the compression rivet bolt needs to be pressed into the material matrix by stamping, rotation, thread extrusion or other methods to achieve assembly.

[0003] For example, the Chinese patent with publication number CN220248607U discloses an adjustable sealing rivet stud, including a rivet part, a sleeve part and a screw part. The interior of the sleeve part is hollow, and one end of the screw part is arranged inside the sleeve part and is non-fixedly connected thereto. A groove is provided in the middle of the rivet part, and the groove is hexagonal. The end face of the screw part is provided with an adjusting rod fixedly connected thereto, one end of the adjusting rod passes through the sleeve part, and a locking nut threadedly connected to the adjusting rod is provided inside the groove. Therefore, the screw part can slide up and down inside the sleeve part to adjust the length. When the length of the screw part needs to be adjusted, it is only necessary to rotate the screw part. After the adjustment is completed, it is further locked by the locking nut. The operation is simple and convenient, and it has universal applicability.

[0004] This patent adjusts the length of the screw portion by rotating the screw portion. However, when adjusting the length of the self-rivet screws in batches using this method, it is difficult for the staff to ensure that the number of turns of each self-rivet screw is equal, which can easily lead to inconsistent lengths of a batch of self-rivet screws, resulting in poor standardization. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an adjustable self-clinching screw fastening device so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A device for fastening adjustable rivet screws, comprising a rivet head and a protrusion fixedly connected to the bottom of the rivet head, a fixing ring fixedly connected to the bottom of the rivet head, a screw movably connected inside the fixing ring, a plurality of slots provided on the outer surface of the screw, and the corresponding slots are arranged vertically and evenly, a plurality of cavities provided in the fixing ring, an elastic plate fixedly connected to the inner side wall of the cavity, the elastic plate is arc-shaped, a block is fixedly connected to the side of the elastic plate close to the screw, the block slides through the inner side wall of the cavity, and when the elastic plate is in a natural state, the block is partially inserted into the corresponding slot.

[0008] Furthermore, the outer peripheral surface of the screw is in contact with the inner wall of the fixing ring, and the outer wall of the clamping block inserted into the corresponding clamping groove is in contact with the inner wall of the corresponding clamping groove.

[0009] Furthermore, a square rod is fixedly connected to the bottom of the rivet head, a square groove is provided on the top of the screw rod, and the lower half of the square rod is slidably inserted into the square groove.

[0010] Furthermore, a plurality of sliding rods are slidably provided on the upper half of the rivet head, the lower half of the sliding rods extends into the corresponding cavity, the top ends of the plurality of sliding rods are fixedly connected to a top plate, and the bottom ends of the sliding rods are fixedly connected to a limiting block, and the limiting block is located on the side of the corresponding elastic plate away from the corresponding blocking block.

[0011] Furthermore, a top groove is provided on the top of the rivet head, and the inner diameter of the top groove is equal to the diameter of the top plate. When the top plate is inserted into the top groove and the top surface of the top plate is coplanar with the top surface of the rivet head, the limit block and the corresponding clamping block are located at the same height, and the side wall of the limit block is in contact with the corresponding side wall of the elastic plate.

[0012] Furthermore, one side of the limiting block is in contact with the inner wall of the corresponding cavity.

[0013] In summary, the present invention has at least one of the following beneficial technical effects:

[0014] 1. This adjustable self-clinching screw fastening device can quickly adjust the screw length by pulling the screw to insert the clamping blocks into different clamping slots. When adjusting a batch of self-clinching screws, the clamping blocks in the batch of self-clinching screws are inserted into the clamping slots at the same position to ensure that the length of the batch of self-clinching screws is equal, making it easier to control the length of the self-clinching screws and improving the batch standardization of self-clinching screws.

[0015] 2. This adjustable rivet screw fastening device, after the rivet screw length is adjusted, press the top plate until the top surface of the top plate is coplanar with the top surface of the rivet head. At this time, the limit block is inserted between the elastic plate and the inner wall of the cavity, and tightly squeezes the elastic plate so that the elastic plate can no longer deform, so the block cannot move, and the screw is fixed, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1is a three-dimensional diagram of an adjustable self-clinching screw fastening device of this embodiment;

[0018] Figure 2 This is a front cross-sectional view of an adjustable self-clinching screw fastening device according to this embodiment;

[0019] Figure 3 This embodiment Figure 2 Enlarged view of point A in the middle.

[0020] In the figure, 1, rivet head; 2, protrusion; 3, fixing ring; 4, screw; 5, slot; 6, cavity; 7, elastic plate; 8, block; 9, square rod; 10, square slot; 11, sliding rod; 12, top plate; 13, limit block; 14, top slot. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Example:

[0023] Reference Figures 1 to 3 The utility model discloses an adjustable rivet screw fastening device, including a rivet head 1 and a protrusion 2 fixedly connected to the bottom of the rivet head 1, a fixing ring 3 is fixedly connected to the bottom of the rivet head 1, a screw 4 is movably connected to the fixing ring 3, a plurality of slots 5 are provided on the outer surface of the screw 4, and the corresponding slots 5 are vertically and evenly arranged, a plurality of cavities 6 are provided in the fixing ring 3, an elastic plate 7 is fixedly connected to the inner side wall of the cavity 6, and the elastic plate 7 is arc-shaped, and a block 8 is fixedly connected to the side of the elastic plate 7 close to the screw 4, the block 8 slides through the inner side wall of the cavity 6, and when the elastic plate 7 is in a natural state, the block 8 is partially inserted into the corresponding slot 5.

[0024] In this embodiment, when installing the self-clinching screw, the fixing ring 3 is passed through the hole on the mounting plate (the workpiece to be fixed), and then the riveting machine presses the self-clinching head 1, and the protrusion 2 engages with the mounting plate, thereby fixing the self-clinching screw to the mounting plate.

[0025] The portion of the block 8 that is inserted into the slot 5 is arc-shaped. The elastic plate 7 is made of an elastic alloy and is elastically deformable. Therefore, when the screw 4 is pulled, the inner wall of the slot 5 squeezes the side wall of the block 8, causing the block 8 to move toward the corresponding cavity 6. The elastic plate 7 deforms until the other slot 5 moves to the same height as the block 8. The block 8 is then inserted into the slot 5 under the elastic restoring force of the elastic plate 7.

[0026] When adjusting a batch of self-riveting screws, the staff pulls the screw 4 so that the blocks 8 in the batch of self-riveting screws are all inserted into the slots 5 at the same position to ensure that the lengths of the batch of self-riveting screws are equal, which makes it easier to control the length of the self-riveting screws and improves the standardization of the batch of self-riveting screws.

[0027] In a further preferred embodiment of the present invention, Figure 2 As shown, the outer peripheral surface of the screw 4 is in contact with the inner wall of the fixing ring 3 , and the outer wall of the clamping block 8 inserted into the corresponding clamping groove 5 is in contact with the inner wall of the corresponding clamping groove 5 .

[0028] In this embodiment, after the clamping block 8 is inserted into the corresponding clamping slot 5 , the screw rod 4 will not move relative to the fixing ring 3 unless the screw rod 4 is pulled.

[0029] In a further preferred embodiment of the present invention, Figure 2 As shown, a square rod 9 is fixedly connected to the bottom of the rivet head 1 , a square groove 10 is opened on the top of the screw rod 4 , and the lower half of the square rod 9 is slidably inserted into the square groove 10 .

[0030] In this embodiment, the square rod 9 is in the shape of a quadrangular prism. The cooperation between the square rod 9 and the square groove 10 prevents the screw rod 4 from rotating relative to the fixing ring 3, so the screw rod 4 can only move vertically.

[0031] In a further preferred embodiment of the present invention, Figure 2 As shown, a plurality of sliding rods 11 are slidably provided on the upper half of the rivet head 1, and the lower half of the sliding rods 11 extends into the corresponding cavity 6. The top ends of the plurality of sliding rods 11 are fixedly connected to a top plate 12, and the bottom ends of the sliding rods 11 are fixedly connected to a limiting block 13, and the limiting block 13 is located on the side of the corresponding elastic plate 7 away from the corresponding blocking block 8.

[0032] A top groove 14 is provided on the top of the rivet head 1, and the inner diameter of the top groove 14 is equal to the diameter of the top plate 12. When the top plate 12 is inserted into the top groove 14 and the top surface of the top plate 12 is coplanar with the top surface of the rivet head 1, the limit block 13 and the corresponding clamping block 8 are located at the same height, and the side wall of the limit block 13 is in contact with the corresponding side wall of the elastic plate 7.

[0033] In this embodiment, when adjusting the length of the screw 4, the device can be inverted so that the limit block 13 moves away from the elastic plate 7 under the action of gravity. At this time, the elastic plate 7 can undergo elastic deformation and the block 8 can move, so that the screw 4 can move relative to the fixing ring 3 and the length of the screw 4 can be adjusted.

[0034] After the length of the screw rod 4 is adjusted, the device is no longer inverted, and the limit block 13 is inserted between the elastic plate 7 and the inner wall of the cavity 6 under the action of gravity. The staff then presses the top plate 12 until the top surface of the top plate 12 is coplanar with the top surface of the rivet head 1. At this time, the limit block 13 and the corresponding clamping block 8 are at the same height, and the limit block 13 is inserted between the elastic plate 7 and the inner wall of the cavity 6, and tightly squeezes the elastic plate 7, so that the elastic plate 7 cannot deform any further, and the clamping block 8 cannot move, thereby fixing the screw rod 4.

[0035] After the length of the screw 4 is adjusted, the staff can also place the device directly on the riveting machine instead of pressing the top plate 12. When the riveting machine is working, it will squeeze the top plate 12 so that the top surface of the top plate 12 is coplanar with the top surface of the rivet head 1, and then drive the rivet head 1 and the protrusion to move, so that the protrusion bites into the mounting plate.

[0036] Furthermore, the top plate 12 is fixedly connected to the rivet head 1 by bolts to prevent the top plate 12 from being vibrated during the operation of the rivet screw, so that the top plate 12 moves relative to the rivet head 1.

[0037] In a further preferred embodiment of the present invention, Figure 3 As shown, one side of the limit block 13 is in contact with the inner wall of the corresponding cavity 6 .

[0038] In this embodiment, the inner wall of the cavity 6 supports the limiting block 13 to prevent the limiting block 13 from tilting.

[0039] The implementation principle of the above embodiment is:

[0040] When adjusting the self-clinching screw, the device is turned upside down, and then the staff pulls the screw 4. The inner wall of the slot 5 squeezes the side wall of the block 8, which can make the block 8 move toward the corresponding cavity 6. The elastic plate 7 is deformed until the other slot 5 moves to the same height as the block 8. The block 8 is inserted into the slot 5 under the elastic restoring force of the elastic plate 7. This makes it easier to control the length of the self-clinching screw.

[0041] Then, the device is no longer inverted, and the staff presses the top plate 12 again until the top surface of the top plate 12 is coplanar with the top surface of the rivet head 1. At this time, the limit block 13 and the corresponding clamping block 8 are at the same height, and the limit block 13 is inserted between the elastic plate 7 and the inner wall of the cavity 6, and tightly squeezes the elastic plate 7, so that the elastic plate 7 can no longer be deformed, so the clamping block 8 cannot move, and the screw 4 is fixed.

[0042] Finally, the device is placed on a riveting machine, which presses the rivet head 1, and the protrusion 2 bites into the mounting plate, thereby fixing the rivet screw to the mounting plate.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. An adjustable rivet screw fastening device, comprising a rivet head (1) and a protrusion (2) fixedly connected to the bottom of the rivet head (1), characterized in that: The bottom of the rivet head (1) is fixedly connected to a fixing ring (3), and a screw (4) is movably connected inside the fixing ring (3). A plurality of slots (5) are provided on the outer surface of the screw (4), and the corresponding slots (5) are arranged vertically and evenly. A plurality of cavities (6) are provided in the fixing ring (3), and an elastic plate (7) is fixedly connected to the inner wall of the cavity (6). The elastic plate (7) is arranged in an arc shape. A block (8) is fixedly connected to the side of the elastic plate (7) close to the screw (4), and the block (8) slides through the inner wall of the cavity (6). When the elastic plate (7) is in a natural state, the block (8) is partially inserted into the corresponding slot (5).

2. The adjustable self-clinching screw fastening device according to claim 1, characterized in that: The outer peripheral surface of the screw rod (4) fits in contact with the inner wall of the fixing ring (3), and the outer wall of the clamping block (8) inserted into the corresponding clamping slot (5) fits in contact with the inner wall of the corresponding clamping slot (5).

3. The adjustable self-clinching screw fastening device according to claim 2, characterized in that: The bottom of the rivet head (1) is fixedly connected to a square rod (9), the top of the screw rod (4) is provided with a square groove (10), and the lower half of the square rod (9) is slidably inserted into the square groove (10).

4. The adjustable self-clinching screw fastening device according to claim 3, characterized in that: A plurality of sliding rods (11) are slidably provided on the upper half of the rivet head (1), and the lower half of the sliding rods (11) extends into the corresponding cavity (6). The top ends of the plurality of sliding rods (11) are fixedly connected to a top plate (12), and the bottom ends of the sliding rods (11) are fixedly connected to a limiting block (13), and the limiting block (13) is located on the side of the corresponding elastic plate (7) away from the corresponding clamping block (8).

5. The adjustable self-clinching screw fastening device according to claim 4, characterized in that: A top groove (14) is provided on the top of the rivet head (1), and the inner diameter of the top groove (14) is equal to the diameter of the top plate (12). When the top plate (12) is inserted into the top groove (14), and the top surface of the top plate (12) is coplanar with the top surface of the rivet head (1), the limit block (13) and the corresponding clamping block (8) are located at the same height, and the side wall of the limit block (13) is in contact with the side wall of the corresponding elastic plate (7).

6. The adjustable self-clinching screw fastening device according to claim 5, characterized in that: One side of the limiting block (13) is in contact with the inner wall of the corresponding cavity (6).

Images