Riveting nut gun

Abstract

The utility model discloses a rivet nut gun which comprises a main body base, a handle hinged to the main body base is arranged on the main body base, and a hollow blocking piece in threaded connection with the main body base is arranged on the main body base. A positioning shaft sleeve capable of stretching relative to the hollow blocking piece is arranged in the hollow blocking piece, and a blocking piece in threaded connection with the hollow blocking piece is arranged at the open end of the hollow blocking piece; a screw rod is arranged between the blocking piece and the positioning shaft sleeve, and the screw rod is rotationally mounted in the positioning shaft sleeve; the tail end of the positioning shaft sleeve is provided with a pushing piece capable of synchronously stretching out and drawing back relative to the positioning shaft sleeve, and a limiting assembly is arranged between the pushing piece and the screw. The screw rod is rotationally connected with the positioning shaft sleeve, and the screw rod can be firmly installed in the positioning shaft sleeve only by rotating 90 degrees every time; meanwhile, the screw rod is automatically locked through the limiting assembly, and the screw rod is convenient to disassemble and assemble and firm to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of riveting tools, and particularly relates to a rivet nut gun. Background Art

[0002] A rivet nut gun is a commonly used riveting tool, usually used to rivet a press-fit nut onto a sheet metal part. Generally, the existing rivet nut gun includes a main housing, a handle hinged to the main housing, and a working head that can telescopically move relative to the open end of the main housing; because press-fit nuts often come in different sizes and models, corresponding working heads of different sizes are required; when the rivet nut gun is working, it is often necessary to replace the working head that mates with the press-fit nut, which requires frequent replacement of the working head. Generally, the working head of the existing rivet nut gun is threadedly connected to the main housing, a limiting steel ball is provided inside the main housing, and a blocking member is also provided at the open end of the main housing. Each time the working head is replaced, the blocking member is often removed first, then the limiting steel ball is pressed, and then the threadedly connected working head is rotated to remove the working head from the main housing. Thus, it can be seen that the replacement of the working head of the existing rivet nut gun is not convenient enough, and the user experience is poor. Therefore, it is necessary to design a rivet nut gun to overcome the above difficulties. Summary of the Invention

[0003] In view of the problems existing in the prior art, the utility model designs a rivet nut gun. The screw rod of the utility model is rotationally connected to the positioning shaft sleeve, and the screw rod can be firmly installed in the positioning shaft sleeve as long as it rotates 90 degrees each time; at the same time, the screw rod is automatically locked by the limiting component, and the disassembly and assembly of the screw rod are convenient and the installation is firm.

[0004] The invention purpose of the utility model is realized by the following technical solutions: a rivet nut gun, including a main body base, a handle hinged to the main body base, and a hollow blocking member threadedly connected to the main body base; a positioning shaft sleeve capable of telescopically moving relative to the hollow blocking member is arranged inside the hollow blocking member, and a blocking member threadedly connected to the open end of the hollow blocking member is arranged; a screw rod is arranged between the blocking member and the positioning shaft sleeve, and the screw rod is rotatably installed in the positioning shaft sleeve; a pushing member capable of synchronously telescoping relative to the end of the positioning shaft sleeve is arranged, and a limiting component is arranged between the pushing member and the screw rod.

[0005] Preferably, the handles are arranged in pairs, a first pin shaft for hinging the two is arranged between the handle and the main body base, and a first connecting rod is arranged between the handle and the pushing member; a second pin shaft for hinging the two is arranged between the handle and the first connecting rod, and a pushing connecting rod hinged to the end of the first connecting rod is arranged; the pushing connecting rod is stuck on the pushing member, and when the handle drives the first connecting rod to move, the pushing connecting rod drives the pushing member to telescopically move relative to the main body base.

[0006] When the handles open relative to each other, the handles first drive the first connecting rod to move. When the first connecting rod moves, it drives the pushing connecting rod to move. The pushing connecting rod is stuck on the pushing member, so when the pushing connecting rod moves, it drives the pushing member to move. At this time, the pushing member extends relative to the main body base, so the pushing member drives the positioning bushing and the screw rod to extend synchronously. When the handles close relative to each other, the pushing member contracts relative to the main body base, so the pushing member drives the positioning bushing and the screw rod to contract synchronously. A press riveting nut is installed at the end of the screw rod. When the handles are repeatedly opened and closed, the screw rod continuously reciprocates and extends, so as to rivet the press riveting nut into the hole position of the sheet metal part.

[0007] Preferably, a third pin shaft for hinging the first connecting rod and the pushing connecting rod is provided between the first connecting rod and the pushing connecting rod; an annular groove is provided on the pushing member, and the pushing connecting rod is arranged in the annular groove; the outer contour of the annular groove and the outer contour of the pushing connecting rod match each other.

[0008] By providing the annular groove, the pushing connecting rod can be reliably stuck in the annular groove, and when the pushing connecting rod moves, it can reliably drive the pushing member to move.

[0009] Preferably, a first elastic member for resetting is provided between the pushing member and the main body base, and an annular protrusion is provided on the pushing member; one end of the first elastic member abuts against the annular protrusion, and the other end abuts against the inner wall of the main body base.

[0010] By providing the annular protrusion, it is convenient to limit the first elastic member. When the handles open relative to each other, the pushing member will approach the inner wall of the main body base, so that the first elastic member will be in a compressed state; then when the handle is released, the first elastic member will squeeze the pushing member, and then the pushing member will drive the pushing connecting rod to move, and when the pushing connecting rod moves, it will drive the handles to close relative to each other; therefore, by providing the first elastic member, it is convenient for the handles to automatically close after being unfolded, the operator is more labor-saving when turning the handles, and the operation is more convenient and fast.

[0011] Preferably, the pushing member is in threaded connection with the positioning bushing, and when the pushing member rotates, it drives the positioning bushing to rotate; a first strip-shaped hole is provided at the open end of the positioning bushing, a first step is provided inside the positioning bushing, and the first strip-shaped hole extends along the first step; a second strip-shaped hole is provided on the first step, and the second strip-shaped hole sinks relative to the first step; the first strip-shaped hole and the second strip-shaped hole are arranged perpendicular to each other; when the screw rod is installed in the positioning bushing, the end of the screw rod is stuck in the second strip-shaped hole, and when the positioning bushing expands and contracts, it drives the screw rod to expand and contract; a limiting component is provided between the first step and the pushing member.

[0012] Preferably, a strip-shaped protrusion is provided at the end of the screw. The outer contour of the strip-shaped protrusion matches the outer contour of the first strip-shaped hole, and the outer contour of the strip-shaped protrusion also matches the outer contour of the second strip-shaped hole. Only in this way can the strip-shaped protrusion be reliably inserted into the first strip-shaped hole and the second strip-shaped hole, facilitating the installation of the screw.

[0013] Preferably, the limiting component includes a retaining piece and a second elastic member; a strip-shaped protrusion is provided at the end of the screw, the retaining piece abuts against the strip-shaped protrusion at the end of the screw, and the second elastic member is arranged between the retaining piece and the pushing member; one end of the second elastic member abuts against the strip-shaped protrusion, and the other end abuts against the pushing member.

[0014] When installing the screw, first remove the blocking member, and then install the screw into the positioning bushing; first install the strip-shaped protrusion at the end of the screw into the first strip-shaped hole, and then continue to axially push the screw so that the strip-shaped protrusion at the end of the screw contacts the retaining piece; at this time, the second elastic member is in a compressed state, and then rotate the screw 90 degrees and release the screw; in this way, the strip-shaped protrusion will be stuck in the second strip-shaped hole. Since the second elastic member causes the retaining piece to press against the strip-shaped protrusion, the strip-shaped protrusion will not automatically disengage from the second strip-shaped hole and requires external force to disengage. When removing the screw, first remove the blocking member; then press the screw inward into the positioning bushing to disengage the strip-shaped protrusion from the second strip-shaped hole; then rotate the screw 90 degrees. At this time, the strip-shaped protrusion is aligned with the first strip-shaped hole, and pulling the screw outward can remove the screw from the positioning bushing, and then different models of screws can be installed.

[0015] Preferably, a knob that rotates synchronously with the pushing member is provided at the end of the pushing member, and a fastener for fixing the two is provided between the knob and the pushing member. After installing the press-fit nut into the hole position of the sheet metal part, the end of the screw is still stuck in the press-fit nut; at this time, by rotating the knob, the knob drives the pushing member to rotate, and the pushing member drives the positioning bushing to rotate; since the screw is stuck in the second strip-shaped hole of the positioning bushing, the screw rotates synchronously when the positioning bushing rotates; then when rotating the knob, the screw can be withdrawn from the press-fit nut, and the operation is simple and convenient.

[0016] Preferably, the blocking member is hollow, a strip-shaped protrusion is provided at the end of the screw, the opening diameter of the blocking member matches the axial length of the strip-shaped protrusion; the blocking member and the screw are coaxially arranged.

[0017] By providing a blocking member to position and guide the screw, the riveting effect of the press-fit nut is better.

[0018] Compared with the prior art, the utility model has the following beneficial effects: 1. The screw is rotatably installed in the positioning shaft sleeve, which is convenient for disassembly and assembly. 2. By pairing the strip-shaped protrusion, the first strip-shaped hole and the second strip-shaped hole, the screw can be conveniently disassembled when rotated by 90°. 3. A limiting component is arranged between the screw and the positioning shaft sleeve, and through the limiting component, the strip-shaped protrusion is always stuck in the second strip-shaped hole, so that the screw is more stably and reliably installed in the positioning shaft sleeve. Description of the Drawings

[0019] Figure 1 is a perspective view of the utility model;

[0020] Figure 2 is an internal structure diagram of the utility model;

[0021] Figure 3 is an exploded view of the utility model;

[0022] Figure 4 is a perspective view of the positioning shaft sleeve;

[0023] Figure 5 is a perspective view of the positioning shaft sleeve from another angle;

[0024] Figure 6 is a perspective view of the screw;

[0025] Reference numerals in the drawings: 1. Main body base; 2. Handle; 3. Hollow blocking member; 4. Positioning shaft sleeve; 5. Blocking member; 6. Screw; 61. Strip-shaped protrusion; 7. Pushing member; 8. Limiting component; 81. Flap; 82. Second elastic member; 9. First connecting rod; 10. Knob; 11. First pin shaft; 12. Second pin shaft; 13. Pushing connecting rod; 14. Third pin shaft; 15. Annular clamping groove; 16. First elastic member; 17. Annular protrusion; 18. First strip-shaped hole; 19. First step; 20. Second strip-shaped hole; 21. Fastener. Detailed Embodiment

[0026] The following further describes the utility model with reference to the embodiments shown in the drawings:

[0027] As Figures 1 to 6 shown, this embodiment discloses a rivet nut gun, which includes a main body base 1, a handle 2 hinged to the main body base 1, and a hollow blocking member 3 threadedly connected to the main body base 1; a positioning shaft sleeve 4 capable of telescoping relative to it is arranged in the hollow blocking member 3, and a blocking member 5 threadedly connected to it is arranged at the open end of the hollow blocking member 3; a screw 6 is arranged between the blocking member 5 and the positioning shaft sleeve 4, and the screw 6 is rotatably installed in the positioning shaft sleeve 4; a pushing member 7 capable of telescoping synchronously relative to it is arranged at the end of the positioning shaft sleeve 4, and a limiting component 8 is arranged between the pushing member 7 and the screw 6.

[0028] The handles 2 are provided in pairs. A first pin shaft 11 for hinging the two is provided between the handle 2 and the main body base 1. A first connecting rod 9 is provided between the handle 2 and the pushing member 7. A second pin shaft 12 for hinging the two is provided between the handle 2 and the first connecting rod 9. The end of the first connecting rod 9 is provided with a pushing connecting rod 13 hinged thereto. The pushing connecting rod 13 is stuck on the pushing member 7. When the handle 2 drives the first connecting rod 9 to move, the pushing connecting rod 13 drives the pushing member 7 to expand and contract relative to the main body base 1. A third pin shaft 14 for hinging the two is provided between the first connecting rod 9 and the pushing connecting rod 13. An annular groove 15 is provided on the pushing member 7. The pushing connecting rod 13 is arranged in the annular groove 15. The outer contour of the annular groove 15 and the outer contour of the pushing connecting rod 13 match each other. A first elastic member 16 for resetting is provided between the pushing member 7 and the main body base 1. An annular protrusion 17 is provided on the pushing member 7. One end of the first elastic member 16 abuts against the annular protrusion 17, and the other end abuts against the inner wall of the main body base 1.

[0029] The pushing member 7 is threadedly connected to the positioning bushing 4, and when the pushing member 7 rotates, it drives the positioning bushing 4 to rotate. The open end of the positioning bushing 4 is provided with a first strip-shaped hole 18. A first step 19 is provided inside the positioning bushing 4. The first strip-shaped hole 18 extends along the first step 19. A second strip-shaped hole 20 is provided on the first step 19. The second strip-shaped hole 20 sinks relative to the first step 19. The first strip-shaped hole 18 and the second strip-shaped hole 20 are arranged perpendicular to each other. When the screw 6 is installed inside the positioning bushing 4, the end of the screw 6 is stuck in the second strip-shaped hole 20. When the positioning bushing 4 expands and contracts, it drives the screw 6 to expand and contract. A limiting component 8 is provided between the first step 19 and the pushing member 7. A strip-shaped protrusion 61 is provided at the end of the screw 6. The outer contour of the strip-shaped protrusion 61 and the outer contour of the first strip-shaped hole 18 match each other, and the outer contour of the strip-shaped protrusion 61 and the outer contour of the second strip-shaped hole 20 also match each other. The limiting component 8 includes a retaining piece 81 and a second elastic member 82. A strip-shaped protrusion 61 is provided at the end of the screw 6. The retaining piece 81 abuts against the strip-shaped protrusion 61 at the end of the screw 6. The second elastic member 82 is provided between the retaining piece 81 and the pushing member 7. One end of the second elastic member 82 abuts against the strip-shaped protrusion 61, and the other end abuts against the pushing member 7.

[0030] The end of the pushing member 7 is provided with a knob 10 that rotates synchronously therewith. A fastener 21 for fixing the two is provided between the knob 10 and the pushing member 7. The blocking member 5 is provided with a hollow interior. A strip-shaped protrusion 61 is provided at the end of the screw 6. The opening diameter of the blocking member 5 and the axial length of the strip-shaped protrusion 61 match each other. The blocking member 5 and the screw 6 are coaxially arranged.

[0031] The specific operation process of this embodiment is as follows. When the handles 2 are opened relative to each other, the handle 2 first drives the first connecting rod 9 to move. When the first connecting rod 9 moves, it drives the pushing connecting rod 13 to move; the pushing connecting rod 13 is stuck on the pushing member 7, so when the pushing connecting rod 13 moves, it drives the pushing member 7 to move; at this time, the pushing member 7 extends relative to the main body base 1, so the pushing member 7 drives the positioning bushing 4 and the screw rod 6 to extend synchronously. When the handles 2 are closed relative to each other, the pushing member 7 contracts relative to the main body base 1, so the pushing member 7 drives the positioning bushing 4 and the screw rod 6 to contract synchronously. A press riveting nut is installed at the end of the screw rod 6. When the handles 2 are repeatedly opened and closed, the screw rod 6 continuously reciprocates and extends, so as to rivet the press riveting nut into the hole position of the sheet metal part.

[0032] When the screw rod 6 needs to be installed, first remove the blocking member 5, and then install the screw rod 6 into the positioning bushing 4; first install the strip-shaped protrusion 61 at the end of the screw rod 6 into the first strip-shaped hole 18, and then continue to axially push the screw rod 6 so that the strip-shaped protrusion 61 at the end of the screw rod 6 contacts the retaining piece 81; at this time, the second elastic member 82 is in a compressed state, then rotate the screw rod 6 by 90 degrees and release the screw rod 6; in this way, the strip-shaped protrusion 61 will be stuck in the second strip-shaped hole 20. Since the second elastic member 82 makes the retaining piece 81 press against the strip-shaped protrusion 61, the strip-shaped protrusion 61 will not automatically disengage from the second strip-shaped hole 20 and requires external force to disengage. When the screw rod 6 needs to be removed, first remove the blocking member 5; then press the screw rod 6 inward into the positioning bushing 4 to disengage the strip-shaped protrusion 61 from the second strip-shaped hole 20; then rotate the screw rod 6 by 90 degrees. At this time, the strip-shaped protrusion 61 is aligned with the first strip-shaped hole 18, and pulling the screw rod 6 outward can remove the screw rod 6 from the positioning bushing 4, and then different models of screw rods 6 can be installed.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A rivet nut gun, comprising a main body base (1), and a handle (2) hinged to the main body base (1), characterized in that, A hollow blocking member (3) is provided on the main body base (1) and is threadedly connected thereto; a positioning sleeve (4) is provided inside the hollow blocking member (3) and is capable of extending and retracting relative thereto; a blocking member (5) is provided at the open end of the hollow blocking member (3) and is threadedly connected thereto; a screw rod (6) is provided between the blocking member (5) and the positioning sleeve (4), and the screw rod (6) is rotatably mounted in the positioning sleeve (4); a pushing member (7) is provided at the end of the positioning sleeve (4) and is capable of synchronously extending and retracting relative thereto; a limiting assembly (8) is provided between the pushing member (7) and the screw rod (6).

2. The rivet nut gun according to claim 1, wherein The handles (2) are arranged in pairs, a first pin shaft (11) is provided between the handle (2) and the main body base (1) to connect the two, a first connecting rod (9) is provided between the handle (2) and the pushing member (7); a second pin shaft (12) is provided between the handle (2) and the first connecting rod (9) to connect the two, a pushing connecting rod (13) is provided at the end of the first connecting rod (9) to connect the two; the pushing connecting rod (13) is clamped on the pushing member (7), and when the handle (2) drives the first connecting rod (9) to move, the pushing connecting rod (13) drives the pushing member (7) to extend and retract relative to the main body base (1).

3. The rivet nut gun according to claim 2, characterized in that, A third pin shaft (14) is provided between the first connecting rod (9) and the pushing connecting rod (13) for hingedly connecting the two. An annular groove (15) is provided on the pushing member (7), and the pushing connecting rod (13) is arranged in the annular groove (15). The outer contour of the annular groove (15) and the outer contour of the pushing connecting rod (13) match each other.

4. The rivet nut gun according to claim 2, wherein A first elastic member (16) for resetting is provided between the pushing member (7) and the main body base (1), and an annular protrusion (17) is provided on the pushing member (7); one end of the first elastic member (16) abuts against the annular protrusion (17), and the other end abuts against the inner wall of the main body base (1).

5. The rivet nut gun according to claim 1, wherein, The pushing member (7) and the positioning sleeve (4) are threadedly connected, and when the pushing member (7) rotates, the positioning sleeve (4) is driven to rotate; a first strip hole (18) is provided at an open end of the positioning sleeve (4), and a first step (19) is provided inside the positioning sleeve (4), and the first strip hole (18) extends along the first step (19); a second strip hole (20) is provided on the first step (19), and the second strip hole (20) is sunken relative to the first step (19); the first strip hole (18) and the second strip hole (20) are arranged perpendicular to each other; when the screw rod (6) is installed in the positioning sleeve (4), the end of the screw rod (6) is stuck in the second strip hole (20), and when the positioning sleeve (4) is extended or retracted, the screw rod (6) is driven to extend or retract; a limiting component (8) is provided between the first step (19) and the pushing member (7).

6. The rivet nut gun according to claim 5, wherein, A strip-shaped protrusion (61) is provided at the end of the screw rod (6), and the outer contour of the strip-shaped protrusion (61) matches the outer contour of the first strip-shaped hole (18), and the outer contour of the strip-shaped protrusion (61) matches the outer contour of the second strip-shaped hole (20).

7. The rivet nut gun according to claim 5, wherein The limiting component (8) includes a retaining piece (81) and a second elastic member (82); a strip-shaped protrusion (61) is provided at the end of the screw rod (6), the retaining piece (81) abuts against the strip-shaped protrusion (61) at the end of the screw rod (6), and the second elastic member (82) is arranged between the retaining piece (81) and the pushing member (7); one end of the second elastic member (82) abuts against the strip-shaped protrusion (61), and the other end abuts against the pushing member (7).

8. The rivet nut gun according to claim 1, wherein, A knob (10) that rotates synchronously with the pushing member (7) is provided at the end of the pushing member (7), and a fastener (21) for fixing the two is provided between the knob (10) and the pushing member (7).

9. The rivet nut gun according to claim 1, wherein The blocking member (5) is provided with a hollow interior, a strip-shaped protrusion (61) is provided at the end of the screw rod (6), the opening diameter of the blocking member (5) and the axial length of the strip-shaped protrusion (61) match each other; the blocking member (5) and the screw rod (6) are coaxially arranged.

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