CN202539454U - Rivet grabbing mechanism and hand riveter - Google Patents

Abstract

The utility model discloses a rivet grabbing mechanism, which comprises a claw seat, a claw equipped in the inner chamber of the claw seat, a push rod located inside the claw seat for jacking the claw and a return spring located behind the push rod. An inner chamber where the claw seat and the claw cooperate with each other is of a regular hexagonal conical shape. The inner chamber has a hexagonal conical corner groove which forms a claw guide groove. The claw is embedded in the claw guide groove. The utility model further discloses a hand riveter. When the hand riveter is operated, the rivet grabbing mechanism provided in the utility model makes the claw telescoping back and forth along the claw guide groove inside the claw seat inner chamber. The claw is then made difficult to slide in the claw seat. The directing properties and the stability of the claw are then enhanced. The claw will not be biased or inclined. Uniform grabbing force can be kept on a rivet. The grabbing force on the rivet can be further increased. The claw will not be displaced or clamped. Meanwhile, the area where the claw and the claw seat inner chamber contact with each other is increased. The claw is then made difficult to damage during a working process.

Description

A kind of rivet grasping mechanism and hand riveter

Technical field

The utility model relates to the clincher tool technical field, particularly relates to a kind of rivet grasping mechanism and hand riveter.

Background technology

At present, in the staking process of product such as hand riveter is widely used in building, automobile, boats and ships, aircraft, machine, electrical equipment, furniture, and the rivet grasping mechanism is a requisite assembly in the hand riveter.The rivet grasping mechanism is made up of pulldown seat, pulldown, push rod and spring usually, and three lobe pulldowns are arranged in the anterior inner chamber of pulldown seat, and the rear portion of pulldown seat is connected with the pull bar of hand riveter.When the pull bar telescoping mechanism of hand riveter made pull bar forward, the pulldown seat that is connected with pull bar in the front end of hand riveter pull bar simultaneously forward.Rivet injects from the mouth of leading of hand riveter front end, because of pulldown seat inner chamber has tapered gradient, leads mouth push pulldown to pulldown seat intracavity diameter big position backward, and pulldown is unclamped, and the push rod at pulldown rear portion withstands pulldown, and rivet just inserts in the pulldown subsequently.When the pull bar telescoping mechanism of hand riveter is withdrawn pull bar backward, drive the pulldown seat backward.At this moment, the tapered gradient of pulldown seat inner chamber closes tightly pulldown simultaneously rivet to be pulled up.

But three lobe pulldown oblique cuttings of existing rivet grasping mechanism are in pulldown seat inner chamber, because the cross section of pulldown seat inner chamber is circular; And be not provided with and the corresponding guide groove of pulldown, when hand riveter was operated, the hand riveter pull bar was elastic; Pulldown is also along with elastic in pulldown seat inner chamber; Pulldown is slided in pulldown seat inner chamber, cause pulldown stability, directionality poor, even pulldown dislocation stuck phenomenon also can occur.

The utility model content

The problem that the utility model will solve provides a kind of rivet grasping mechanism and hand riveter, with the pulldown stability that overcomes existing rivet grasping mechanism, the defective of directionality difference.

For achieving the above object; The technical scheme of the utility model provides a kind of rivet grasping mechanism; Said rivet grasping mechanism comprises: pulldown seat (2), be located in pulldown (1) in said pulldown seat (2) inner chamber, the pulldown seat (2) and withstand the push rod (3) of pulldown (1) and the back-moving spring (4) at push rod (3) rear portion; The inner chamber (6) that pulldown seat (2) cooperates with pulldown (1) is positive hexagonal pyramidal, and the chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove, and said pulldown (1) embeds in the described pulldown guide groove.

Wherein, the inwall at said pulldown seat (2) rear portion is provided with the screw thread (5) suitable with the head of hand riveter pull bar.

Wherein, said pulldown (1) is two lobe pulldowns or three lobe pulldowns.

The technical scheme of the utility model also provides a kind of hand riveter; The rivet grasping mechanism of said hand riveter comprises: pulldown seat (2), be located in pulldown (1) in said pulldown seat (2) inner chamber, the pulldown seat (2) and withstand the push rod (3) of pulldown (1) and the back-moving spring (4) at push rod (3) rear portion; The inner chamber that pulldown seat (2) cooperates with pulldown is positive hexagonal pyramidal; The chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove, and said pulldown (1) embeds in the described pulldown guide groove.

Wherein, the inwall at said pulldown seat (2) rear portion is provided with the screw thread (5) suitable with the head of hand riveter pull bar.

Wherein, said pulldown (1) is two lobe pulldowns or three lobe pulldowns.

Wherein, said hand riveter is single wushu hand riveter or double handle hand riveter.

Compared with prior art, the technical scheme of the utility model has following advantage:

The inner chamber that the pulldown seat of the rivet grasping mechanism of the utility model cooperates with pulldown is positive hexagonal pyramidal, and the chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove, and pulldown embeds in the pulldown guide groove; When hand riveter is operated; Pulldown is elastic along the pulldown guide groove in pulldown seat inner chamber, makes pulldown be difficult in the pulldown seat, sliding, and has improved directionality, the stability of pulldown; Pulldown can not squinted with crooked; Can keep uniform grasping force to rivet, and improve the grasping force to rivet, pulldown the stuck phenomenon that misplaces can not occur yet.Increased the contact area of pulldown and pulldown seat inner chamber simultaneously, made pulldown not fragile at work.

Description of drawings

Fig. 1 is the structural representation (front view) of a kind of rivet grasping mechanism of the utility model embodiment;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the generalized section of A-A position among Fig. 2;

Fig. 4 is the generalized section of B-B position among Fig. 1;

Fig. 5 is the structural representation of a kind of double handle hand riveter of the utility model embodiment;

Fig. 6 is the structural representation of a kind of single wushu hand riveter of the utility model embodiment.

Wherein the title of each Reference numeral is following:

The inner chamber 6 that pulldown 1, pulldown seat 2, push rod 3, back-moving spring 4, screw thread 5, pulldown seat cooperate with pulldown.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.

Embodiment 1:

The structure of a kind of rivet grasping mechanism of the utility model embodiment such as Fig. 1 are to shown in Figure 4; Comprise pulldown seat 2, be located at pulldown 1 in said pulldown seat 2 inner chambers, withstand the push rod 3 of pulldown 1 and the back-moving spring 4 at push rod 3 rear portions in the pulldown seat 2; The inner chamber 6 that pulldown seat 2 cooperates with pulldown is positive hexagonal pyramidal; The chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove, and said pulldown 1 embeds in the described pulldown guide groove.

The inwall at said pulldown seat 2 rear portions is provided with the screw thread 5 suitable with the head of hand riveter pull bar.

Said pulldown 1 can be two lobe pulldowns or three lobe pulldowns.

Embodiment 2

The structure of a kind of double handle hand riveter of the utility model embodiment is as shown in Figure 5, and the double handle hand riveter of present embodiment comprises the rivet grasping mechanism described in the embodiment 1.The use of the double handle hand riveter of present embodiment is following:

At first with two one or two palmistrys separately, pull bar is led mouth pulldown is backed down to anterior movements at this moment, and rivet gets in the rivet grasping mechanism.The rivet grasping mechanism travels forward with pull bar; When closing handle, under the effect of push rod and back-moving spring 4, the rivet grasping mechanism is caught rivet to move backward and rivet is broken.

Embodiment 3

The structure of a kind of single wushu hand riveter of the utility model embodiment is as shown in Figure 6, and single wushu hand riveter of present embodiment comprises the rivet grasping mechanism described in the embodiment 1.The use of single wushu hand riveter of present embodiment and the use of the double handle hand riveter among the embodiment 2 are similar; Difference is that double handle hand riveter comprises two handles; When riveting, user's two hands are held two handles respectively and are firmly riveted; Single wushu hand riveter comprises body and handle, and when riveting, the user holds body simultaneously with a hand and handle is firmly riveted.

In the above-described embodiments, because the inner chamber that the pulldown seat of rivet grasping mechanism cooperates with pulldown is positive hexagonal pyramidal, the chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove; Pulldown embeds in the pulldown guide groove, and when hand riveter was operated, pulldown was elastic along the pulldown guide groove in pulldown seat inner chamber; Make pulldown be difficult in the pulldown seat, sliding; Improved directionality, the stability of pulldown, pulldown can not squinted with crooked, can keep uniform grasping force to rivet; And improved the grasping force to rivet, pulldown the stuck phenomenon that misplaces can not occur yet.Increased the contact area of pulldown and pulldown seat inner chamber simultaneously, made pulldown not fragile at work.The above design of rivet grasping mechanism improves performance of the utility model and operating efficiency greatly.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims (7)

1. rivet grasping mechanism; It is characterized in that; Said rivet grasping mechanism comprises: pulldown seat (2), be located in pulldown (1) in said pulldown seat (2) inner chamber, the pulldown seat (2) and withstand the push rod (3) of pulldown (1) and the back-moving spring (4) at push rod (3) rear portion; The inner chamber (6) that pulldown seat (2) cooperates with pulldown (1) is positive hexagonal pyramidal, and the chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove, and said pulldown (1) embeds in the described pulldown guide groove.

2. rivet grasping mechanism as claimed in claim 1 is characterized in that, the inwall at said pulldown seat (2) rear portion is provided with the screw thread (5) suitable with the head of hand riveter pull bar.

3. according to claim 1 or claim 2 rivet grasping mechanism is characterized in that said pulldown (1) is two lobe pulldowns or three lobe pulldowns.

4. hand riveter; It is characterized in that; The rivet grasping mechanism of said hand riveter comprises: pulldown seat (2), be located in pulldown (1) in said pulldown seat (2) inner chamber, the pulldown seat (2) and withstand the push rod (3) of pulldown (1) and the back-moving spring (4) at push rod (3) rear portion; The inner chamber that pulldown seat (2) cooperates with pulldown is positive hexagonal pyramidal, and the chamfered groove of its hexagonal pyramidal constitutes the pulldown guide groove, and said pulldown (1) embeds in the described pulldown guide groove.

5. hand riveter as claimed in claim 4 is characterized in that, the inwall at said pulldown seat (2) rear portion is provided with the screw thread (5) suitable with the head of hand riveter pull bar.

6. like claim 4 or 5 described hand riveters, it is characterized in that said pulldown (1) is two lobe pulldowns or three lobe pulldowns.

7. hand riveter as claimed in claim 6 is characterized in that, said hand riveter is single wushu hand riveter or double handle hand riveter.

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