Blind rivet riveting device

Abstract

The utility model discloses a blind rivet riveting device which comprises a front end fixed to a rivet gun head, the front end is provided with a penetrating insertion through hole and a side hole obliquely communicated with the insertion through hole, retainers are inserted into the side hole, O-shaped rings are arranged on the outer rings of the retainers, one end of each retainer is provided with an arc-shaped portion capable of being attached to the corresponding O-shaped ring, and the other end of each retainer is provided with an arc-shaped groove. And the other end of the retainer is provided with a clamping part which is in contact with the side wall of the blind rivet through the anti-skid convex patterns. Compared with the prior art, the utility model has the advantages that the arc-shaped part on the retainer is arranged, so that the arc-shaped part and the O-shaped ring which are in face-to-face fit are not easy to slip, when the blind rivet is inserted into the insertion through hole at the front end, the O-shaped ring stably and elastically acts on the clamping part of the retainer to be fit with the side wall of the blind rivet, and the anti-slip convex grains on the clamping part are arranged, so that the blind rivet is prevented from slipping off. The friction between the clamping part and the blind rivet can be effectively increased, and the blind rivet is effectively prevented from falling out.

Description

Technical Field

[0001] The utility model relates to the technical field of rivet guns, in particular to rivet riveting devices. Background Art

[0002] Blind rivets are fastening elements that are only suitable for joining two parts from one side, such as joining two metal sheets where one of the metal sheets cannot be fastened from the end face.

[0003] Some patents, such as the patent application number CN201210078041.3, disclose a blind rivet riveting device, in which a grab assembly capable of connecting a blind rivet is provided at the front end of a rivet gun. A through hole that runs through the grab assembly from front to back and a side hole that connects to the through hole from one side are provided, a steel ball is placed in the side hole, and an elastic O-ring is provided on the outside of the steel ball. A blind rivet is inserted and installed in the through hole, and the O-ring can elastically push the steel ball so that the steel ball can stop the blind rivet and limit the position of the blind rivet.

[0004] However, the contact between the steel ball and the O-ring is smooth, and the steel ball and the O-ring are easy to slip, resulting in unstable elastic effect of the O-ring on the steel ball, which can easily make the steel ball's locking effect on the blind rivet ineffective. When the jaws do not clamp the blind rivet and the muzzle of the rivet gun is facing downward, the blind rivet is easy to fall out of the rivet gun. Utility Model Content

[0005] The utility model aims to solve the problem that blind rivets are easy to fall out due to easy slipping between an O-ring and a steel ball on a grab assembly of an existing rivet gun, and to provide a blind rivet riveting device which can effectively prevent the blind rivets from falling out.

[0006] The utility model solves the above technical problems by adopting the following technical solutions: a blind rivet riveting device, comprising a front end fixed to a rivet gun head, the front end of which is provided with an insertion hole for inserting the blind rivet;

[0007] The front end is provided with a connecting section capable of being threadedly connected to a rivet gun and a stopping section that stops at the end of the rivet gun head, and the side wall of the front end is provided with a plurality of side holes connected to the insertion hole, and the side holes are inclined in the direction of the stopping section;

[0008] A stopper is inserted and installed in the side hole, and the outer ring of some of the stoppers is provided with an elastic O-ring;

[0009] An arc portion capable of contacting the O-ring surface is provided on one end of the stopper;

[0010] The other end of the stopper is provided with a stopper, and when a blind rivet is inserted and installed in the insertion hole, the elastic action of the O-ring causes the stopper to fit the side wall of the blind rivet, and the stopper contacts the side wall of the blind rivet through a plurality of anti-slip convex grooves.

[0011] A further preferred solution of the utility model is: a plurality of step holes are opened on the front end, the side hole is located between the insertion hole and the step hole, the step hole and the side hole are coaxially arranged, and the aperture of the step hole is larger than the aperture of the side hole.

[0012] A further preferred solution of the utility model is that the stopper is provided with a pin movable portion which can be inserted into the side hole, and the locking portion is obliquely arranged at the end of the pin movable portion.

[0013] A further preferred solution of the present invention is that when the movable portion of the pin is inserted into the side hole, the end surface of the locking portion is parallel to the axis of the insertion hole.

[0014] A further preferred solution of the utility model is that the stopper is also provided with a pin protrusion, the outer diameter of the pin protrusion is larger than the diameter of the side hole, and the pin protrusion can fall into the step hole and restrict the stopper from completely entering the insertion hole.

[0015] A further preferred solution of the utility model is that the arc-shaped portion is arranged on the pin protrusion, and the arc-shaped portion is arranged in a concave manner.

[0016] A further preferred solution of the utility model is that a plurality of the side holes are distributed circumferentially around the axis of the insertion hole.

[0017] A further preferred solution of the present invention is that an angle α is formed between the axis of the side hole and the axis of the insertion hole, and α is an acute angle.

[0018] A further preferred solution of the utility model is that the end face of the movable portion of the pin is a guide end face, and an angle β is formed between the guide end face and the end face of the locking portion, and β is an obtuse angle.

[0019] A further preferred solution of the utility model is: the connecting section is provided with an external thread, a groove is left between the external thread and the stop section, and the side hole is connected to the groove.

[0020] Compared with the prior art, the advantage of the utility model lies in that, by setting the arc-shaped portion on the stopper, the arc-shaped portion and the O-ring that are in surface contact with each other are not easy to slip, and when the blind rivet is inserted into the through hole at the front end, the O-ring stably and elastically acts on the stopper to make the stopper fit the side wall of the blind rivet, and the setting of the anti-slip convex pattern on the stopper can effectively increase the friction between the stopper and the blind rivet, thereby effectively preventing the blind rivet from falling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0022] Figure 1 It is a schematic diagram of the structure of a preferred embodiment of the utility model;

[0023] Figure 2 A cross-sectional view of a preferred embodiment of the utility model;

[0024] Figure 3 This is the preferred embodiment of the utility model Figure 2 A is an enlarged schematic diagram;

[0025] Figure 4 An exploded view of a preferred embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the action of inserting a blind rivet into a rivet gun in a preferred embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the state of a blind rivet after being inserted into a rivet gun in a preferred embodiment of the utility model.

[0028] In the figure: 1, front end, 11, side hole, 12, connecting section, 13, stop section, 14, external thread, 15, intermediate groove, 16, insertion hole, 17, step hole; 2, stopper, 21, pin movable part, 22, pin protrusion, 23, arc-shaped part, 24, locking part, 25, guide end face; 3, O-ring; 4, blind rivet. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0030] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0031] This embodiment mainly describes a blind rivet riveting device that can effectively prevent blind rivets from falling out, as follows:

[0032] like Figure 1-6As shown, the blind rivet riveting device includes a front end 1 threadedly fixed on the head of a rivet gun (the overall view of the rivet gun is not shown in the accompanying drawings of the specification, and the overall view of the rivet gun can refer to the patent disclosed in the application number CN201210078041.3 Figure 1 ), a plurality of side holes 11 distributed circumferentially around the axis of the thread are opened on the front end 1, a stopper 2 is inserted into the side hole 11, and the outer rings of the plurality of stoppers 2 are elastically enclosed by elastic O-rings 3.

[0033] In this embodiment, a connecting section 12 and a stop section 13 are provided on the front end 1, and an external thread 14 is provided on the connecting section 12. The front end 1 is threadably connected to the rivet gun through the external thread 14 on the connecting section 12. The external dimension of the stop section 13 is larger than the external diameter of the external thread 14. The stop section 13 can be stopped and fitted on the end of the rivet gun head. A groove 15 is left between the external thread 14 and the stop section 13. Several side holes 11 on the front end 1 are connected to the groove 15, and a through hole 16 that penetrates the connecting section 12 and the stop section 13 at the same time is provided on the front end 1. The side hole 11 is obliquely connected to the through hole 16, that is, an acute angle α is formed between the axis of the side hole 11 and the axis of the through hole 16. Preferably, the side hole 11 is obliquely in the direction of the stop section 13, and the external thread 14 and the through hole 16 are coaxially arranged.

[0034] To prevent the stopper 2 from falling into the insertion hole 16 along the side hole 11, a plurality of step holes 17 are provided on the front end 1, which are coaxially arranged with the side hole 11 and have a larger aperture than the side hole 11. The side hole 11 is located between the insertion hole 16 and the step hole 17. The stopper 2 is provided with a pin movable portion 21 which can be inserted into the side hole 11, and a pin protrusion 22 located at one end of the pin movable portion 21. The outer diameter of the pin protrusion 22 is larger than the aperture of the side hole 11. The stopper 2 is inserted into the side hole 11 through the pin movable portion 21, and the pin protrusion 22 can be inserted into the step hole 17 and limit the stopper 2 from completely entering the insertion hole 16.

[0035] An arc portion 23 is provided at the end of the pin protrusion 22 away from the pin movable portion 21, and the arc portion 23 is in surface contact with the O-ring 3, and a stopping portion 24 is provided at the other end of the pin movable portion 21. The end of the stopping portion 24 is a plane or arc surface structure. When the stopper 2 is inserted into the side hole 11, the end face or cross-section of the stopping portion 24 is parallel to the axis of the insertion hole 16. Preferably, the stopping portion 24 adopts a plurality of anti-slip convex structures.

[0036] In this embodiment, the locking portion 24 is obliquely arranged at the end of the pin movable portion 21, and the end face of the other end of the pin movable portion 21 is a guide end face 25, and an angle β is formed between the guide end face 25 and the end face or cross-section of the locking portion 24, β is an obtuse angle, and the angle between the guide end face 25 and the axis of the through hole 16 of the front end 1 is an acute angle, that is, along the extension direction from the stop section 13 to the connecting section 12 of the front end 1, the sizes between the guide end faces 25 on the plurality of stop members 2 are large and small.

[0037] When the blind rivet 4 is inserted into the rivet gun for installation, the blind rivet 4 is inserted into the insertion hole 16 from the stop section 13 in advance, and the blind rivet 4 passes through the guide end surface 25 of the stopper 2, so that the stopper 2 can move outward along the insertion hole until the side wall of the blind rivet 4 contacts the locking portion 24 of the stopper 2, and the O-ring 3 elastically acts on the locking portion 24 to fit the side wall of the blind rivet 4.

[0038] In the present application, the arc-shaped portion 23 on the stopper 2 is arranged so that the arc-shaped portion 23 and the O-ring 3, which are in surface contact with each other, are not easy to slip. When the blind rivet 4 is inserted into the insertion hole 16 of the front end 1, the O-ring 3 stably and elastically acts on the stopper 2 so that the stopper 24 is in contact with the side wall of the blind rivet 4. In addition, the anti-slip convex pattern on the stopper 24 can effectively increase the friction between the stopper 24 and the blind rivet 4, thereby effectively preventing the blind rivet 4 from falling out.

[0039] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0040] The blind rivet riveting device provided by the utility model is introduced in detail above. The principle and implementation mode of the utility model are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, the utility model can also be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. A blind rivet riveting device, comprising a front end fixed to a rivet gun head, the front end being provided with an insertion hole for inserting the blind rivet; The front end is provided with a connecting section capable of being threadedly connected to a rivet gun and a stopping section that stops at the end of the rivet gun head, and the side wall of the front end is provided with a plurality of side holes connected to the insertion hole, and the side holes are inclined in the direction of the stopping section; A stopper is inserted and installed in the side hole, and the outer ring of some of the stoppers is provided with an elastic O-ring; It is characterized in that An arc portion capable of contacting the O-ring surface is provided on one end of the stopper; The other end of the stopper is provided with a stopper, and when a blind rivet is inserted and installed in the insertion hole, the elastic action of the O-ring causes the stopper to fit the side wall of the blind rivet, and the stopper contacts the side wall of the blind rivet through a plurality of anti-slip convex grooves.

2. The blind rivet riveting device according to claim 1, characterized in that: A plurality of step holes are provided on the front end, the side hole is located between the insertion hole and the step hole, the step hole and the side hole are coaxially arranged, and the aperture of the step hole is larger than the aperture of the side hole.

3. The blind rivet riveting device according to claim 2, characterized in that: The stopper is provided with a pin movable portion which can be inserted into the side hole, and the locking portion is obliquely arranged at the end of the pin movable portion.

4. The blind rivet riveting device according to claim 3, characterized in that: When the pin movable portion is inserted into the side hole, the end surface of the locking portion is parallel to the axis of the insertion hole.

5. The blind rivet riveting device according to claim 2, characterized in that: The stopper is also provided with a pin protrusion, the outer diameter of which is larger than the diameter of the side hole, and the pin protrusion can fall into the step hole and restrict the stopper from completely entering the insertion hole.

6. The blind rivet riveting device according to claim 5, characterized in that: The arc-shaped portion is arranged on the pin protrusion, and the arc-shaped portion is arranged in a concave manner.

7. The blind rivet riveting device according to claim 1, characterized in that: The plurality of side holes are distributed circumferentially around the axis of the insertion hole.

8. The blind rivet riveting device according to claim 1, characterized in that: An angle α is formed between the axis of the side hole and the axis of the insertion hole, and α is an acute angle.

9. The blind rivet riveting device according to claim 3, characterized in that: The end face of the pin movable portion is a guide end face, and an angle β is formed between the guide end face and the end face of the locking portion, where β is an obtuse angle.

10. The blind rivet riveting device according to claim 1, characterized in that: The connecting section is provided with an external thread, a groove is left between the external thread and the stop section, and the side hole is connected to the groove.

Images