CN114713756A

CN114713756A - Hand riveter

Info

Publication number: CN114713756A
Application number: CN202210260291.2A
Authority: CN
Inventors: 李锋; 王伟毅
Original assignee: Hangzhou Great Star Industrial Co Ltd
Current assignee: Hangzhou Great Star Industrial Co Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-07-08

Abstract

The invention discloses a rivet gun, which comprises a shell and a handle, wherein a rivet structure is arranged in the shell, the handle comprises a first handle and a second handle which can rotate relatively, the shell and the first handle are plastic pieces, the shell and the first handle are integrally formed, the second handle is in transmission connection with the rivet structure, and a pressing mechanism is arranged in the rivet structure. The invention selects the plastic to manufacture the hand riveter, which is beneficial to reducing the weight of the hand riveter, expanding the range of applicable people and reducing the cost; the pressing mechanism can improve the clamping capacity of the clamping jaws for clamping the rivet, avoid the rivet from falling off, convert sliding friction between the clamping jaws and the limiting sleeve into rolling friction, and reduce abrasion between the clamping jaws and the limiting sleeve.

Description

Hand riveter

Technical Field

The invention relates to the technical field of riveting tools, in particular to a hand riveter.

Background

The hand riveter is used for fastening and riveting various metal plates, pipes and other manufacturing industries, and is widely used for riveting electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, decoration and the like at present. The rivet has the advantages that the rivet can be riveted without tapping internal threads and pulling rivet products without welding nuts, and is firm in riveting, high in riveting efficiency and convenient to use. The application of the hand riveter is as follows: if the nut of a certain product needs to be installed outside, and the space inside is narrow, when the pressure head of the sub-riveting machine cannot enter the method for performing pressure riveting and sprouting and the like to meet the strength requirement, at the moment, the pressure riveting and the expansion riveting are not feasible. The rivet is applicable to the fastening field of plates and pipes (0.5-6 MM) with various thicknesses. The rivet can be riveted at one time by using a pneumatic or manual rivet pulling gun, and is convenient and firm; the traditional welding nut is replaced, and the defects that a metal sheet, a thin pipe is easy to melt in welding, the welding nut is unsmooth and the like are overcome.

Principle of rivet joint: the rivet is a hollow rivet, a rivet stem is arranged in the center of the hollow rivet, the tail end of the rivet stem is in a round collar shape, and the center of the hollow rivet is provided with scales.

The common hand riveters in the market at present comprise a single-handle hand riveter and a double-handle hand riveter. The double-handle hand riveter comprises two handles, and when riveting is carried out, a user respectively holds the two handles with two hands and forcibly rivets; the single-handle type hand riveter comprises a body and a handle, and when riveting is carried out, a user holds the body and the handle simultaneously with one hand to rivet forcefully. The hand riveter of the prior art has the advantages that the gun body and the handle are directly connected through the shaft, the basic principle is that the rivet is pulled out by utilizing the lever action, however, the hand riveter of the hand riveter has long stroke and large spreading distance between the gun body and the handle, so that the hand riveter is not suitable for single-hand quick operation. In both the double-handle type and the single-handle type hand riveters, the hand riveter is easy to wear or damage due to the fact that a hand riveter mechanism of the hand riveter is frequently used, and therefore hand riveter efficiency is not high.

For example, a "rivet gun" disclosed in chinese patent literature, which is publication No. CN206550282U, includes a gun handle and a gun head, the gun head is slidably connected with an orientation assembly for stabilizing a direction of the gun head, the orientation assembly includes a telescopic portion and an attaching portion; the telescopic part is hinged with the gun handle; the laminating portion with the one end that the telescopic part kept away from the stock is articulated, and with the rifle head slides and is connected. The problem that the rivet gun is not perpendicular to a riveting surface possibly existing in the riveting process of the rivet gun is solved, but the abrasion problem of a clamping jaw in the using process is not improved. Moreover, most of the hand riveters sold in the market are made of metal, so that the hand riveter is heavy in overall weight, limited in applicable crowd and not suitable for people with low strength.

Disclosure of Invention

The invention provides the hand riveter with small weight and convenient use, which aims to overcome the problems that the existing hand riveter is heavy in weight and limited in applicable crowds, and the working efficiency is not high because the grasping capability of a jaw to a hand riveter is reduced in the long-term use process.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a rivet gun, is including built-in casing and the handle that has the structure of riveting, the handle includes first handle and the second handle that can take place relative rotation, the casing is the working of plastics with first handle, casing and first handle integrated into one piece, the second handle is connected with the transmission of the structure of riveting, be equipped with hold-down mechanism in the structure of riveting. The common hand riveters are made of metal, are heavy and are not suitable for people with low strength, and the hand riveters are made of plastic, so that the weight of the finished hand riveters can be reduced, the range of applicable people of the hand riveters is expanded, and the manufacturing cost of the hand riveters can be reduced; the general rivet structure is worn in the long-term use process, so that the rivet is easy to fall off, and the working efficiency is reduced; in the use process of the riveting device, a user can perform riveting action by one hand, when the second handle is relatively far away from or close to the first handle, the second handle drives the riveting structure to perform corresponding operation, and the pressing mechanism in the riveting structure can help the riveting structure to better grasp the riveting nail and avoid the drop of the riveting nail.

Preferably, the rivet structure sequentially comprises a pull rod with an inner cavity, a push rod with an inner cavity and a clamping jaw from top to bottom, a limiting sleeve is further sleeved on the outer side of the joint of the pull rod and the push rod, the clamping jaw is limited in the inner cavity of the limiting sleeve, the push rod can push the clamping jaw to move under the action of a first pressure spring, and a leading-in head is arranged at the end part of the clamping jaw. The rivet pulling structure is in transmission connection with the second handle, and when the second handle rotates relative to the first handle, the rivet pulling structure is driven to move; when the second handle moves away from the first handle, the pull rod moves downwards, the first pressure spring is compressed, the ejector rod drives the clamping jaws to move downwards and open, and a user can clamp the blind rivet by the clamping jaws; when the second handle moves close to the first handle, under the action of the restoring force of the first pressure spring and the limiting effect of the limiting sleeve, the clamping jaws are gradually tightened and act on the rivet, and after the process is repeated for multiple times, the rivet is broken and the riveting is completed.

Preferably, movable grooves are formed in two sides of the inner portion of the limiting sleeve, the pressing mechanism comprises a second pressure spring arranged in the movable grooves, and balls are arranged at the end portions of the second pressure spring. In the moving process of the jaw in the limiting sleeve, when the ball is pressed by the jaw, the ball moves into the movable groove and extrudes the second pressure spring, the second pressure spring is required to restore the deformation, and the second pressure spring and the ball generate reverse acting force on the jaw, so that the capability of clamping the rivet by the jaw is improved, and the rivet is prevented from falling off; and the ball can change the sliding friction between the claw and the stop collar into rolling friction, and reduce the abrasion between the claw and the stop collar.

Preferably, a first rotating shaft is arranged at the circle center of the ball, and two ends of the first rotating shaft are connected with the second pressure spring. The arrangement of the ball, the first rotating shaft and the second pressure spring can enable the ball to rotate by taking the first rotating shaft as a rotating center.

Preferably, the inner diameter of the movable groove is not smaller than the diameter of the ball. If the diameter of the ball is larger than the inner diameter of the movable groove, the ball may protrude out of the inner surface of the limit sleeve in the moving process of the jack catch in the limit sleeve, so that the moving of the jack catch is hindered and the jack catch may be damaged.

Preferably, a connecting piece is arranged at the position, close to the rivet pulling structure, of the second handle, a tooth sheet with clamping teeth is arranged at one end, far away from the second handle, of the connecting piece in a rotating mode, one end, far away from the connecting piece, of the tooth sheet is connected with the shell in a rotating mode, and tooth grooves matched with the clamping teeth are formed in the outer side wall, close to the second handle, of the pull rod. When the second handle rotates upwards anticlockwise relative to the first handle, the connecting piece connected with the second handle drives the tooth sheet to rotate, and at the moment, as the tooth grooves matched with the clamping teeth on the tooth sheet are formed in the pull rod, the pull rod moves downwards to compress the first pressure spring, and the pull rod moves downwards; when the second handle rotates downwards relative to the first handle in a clockwise mode, the pull rod moves upwards.

Preferably, the inner cavities of the pull rod and the limiting sleeve are in a step shape. The arrangement of the stepped inner cavity of the pull rod can limit the first pressure spring in the pull rod only under the action of the pull rod and the ejector rod without other limit structures; and the stepped structure of the stop collar can avoid overlarge downward movement distance of the pull rod.

Preferably, a metal spacer is arranged at the joint of the introduction head and the shell. The blind rivet is generally made of metal, and the arrangement of the metal spacer bush at the joint of the leading-in head and the shell in the application can avoid the damage of the blind rivet and the shell during interaction, and is beneficial to prolonging the service life of the blind rivet gun.

Preferably, a rotating shaft hole is formed in the shell, the second handle, the tooth piece and the shell are rotatably connected through the second rotating shaft, and a metal spacer bush is further arranged on the rotating shaft hole. When the hand riveter in this application is using, second handle, pick and casing rotate junction and can produce great effort, compare with the metal, the intensity of plastics is less, sets up the metal spacer at this place and helps alleviating the effort of direct action on the casing, helps prolonging the life of whole hand riveter.

Preferably, a torsion spring is arranged on the second rotating shaft between the second handle and the shell. The second handle can reset after rotating relative to the first handle due to the arrangement of the torsion spring, and the operation is convenient.

Preferably, the first handle and the second handle are provided with a fastener. The arrangement of the fastener can avoid the overlarge rotation angle of the second handle relative to the first handle.

Preferably, a plurality of reinforcing ribs are arranged in the first handle. The reinforcing ribs comprise a plurality of transverse reinforcing ribs and longitudinal reinforcing ribs and are arranged in a crossed mode, and due to the fact that the strength of the plastic products is slightly poor compared with that of the metal products, the reinforcing ribs are arranged in the first handle, and the strength of the first handle is improved.

Preferably, the second handle is provided with a handle sleeve, and the first handle is provided with a plurality of protrusions for holding. The first handle is provided with a plurality of protruding parts for holding. Can help the user to better grasp the hand riveter and avoid slipping.

Preferably, the second handle is a metal part, and a plastic part or a rubber part is sleeved outside the second handle. Can be used for protecting the hand of a user and simultaneously avoiding the slipping phenomenon of the user in the operation process.

Therefore, the invention has the following beneficial effects: (1) the hand riveter is made of plastic, so that the weight of the hand riveter is reduced, the range of applicable people is expanded, and the cost is reduced; (2) the pressing mechanism can improve the clamping capacity of the clamping jaws for clamping the rivet, avoid the rivet from falling off, convert sliding friction between the clamping jaws and the limiting sleeve into rolling friction, and reduce abrasion between the clamping jaws and the limiting sleeve; (3) the rivet pulling structure utilizes the lever principle, so that the operation is convenient and labor-saving; (4) all set up the metal spacer sleeve in pivot hole, leading-in head and casing junction, be favorable to alleviating the effort of blind rivet rifle direct action on the casing in the use, help prolonging the life of whole blind rivet rifle.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a front view of the present invention.

Figure 3 is a cross-sectional view of the invention.

Fig. 4 is an enlarged view of the present invention at a.

Fig. 5 is a schematic structural view of the stop collar of the present invention.

Fig. 6 is a schematic view of the present invention with the housing and first handle removed.

Fig. 7 is a schematic view of a blind rivet arrangement according to the present invention.

Fig. 8 is a cross-sectional view of a blind rivet arrangement according to the present invention.

In the figure: 1. the device comprises a shell, 11, a rotating shaft hole, 12, a second rotating shaft, 13, a metal spacer bush, 21, a first handle, 211, a boss, 22, a second handle, 221, a connecting piece, 222, a tooth piece, 223, a latch, 31, a pull rod, 311, a clamping groove, 32, a push rod, 33, a clamping jaw, 331, a first pressure spring, 34, a limiting sleeve, 341, a movable groove, 342, a second pressure spring, 343, a ball, 344, a first rotating shaft, 35, a leading-in head, 4, a torsion spring, 5 and a clamping piece.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1 to 8, the hand riveter comprises a shell 1 with a built-in hand riveter structure and handles, wherein the handles comprise a first handle 21 and a second handle 22 which can rotate relatively, the shell 1 and the first handle 21 are made of plastic, the shell 1 and the first handle 21 are integrally formed, the second handle 22 is in transmission connection with the hand riveter structure, and a pressing mechanism is arranged in the hand riveter structure. The common hand riveter is made of metal, is heavy and is not suitable for people with small strength, and the hand riveter is made of plastic, so that the weight of the finished hand riveter can be reduced, the range of applicable people of the hand riveter is expanded, and the manufacturing cost of the hand riveter can be reduced; the general rivet structure can be worn in the long-term use process, so that the rivet is easy to fall off, and the working efficiency is reduced; and this application is in the use, and the user can carry out the riveting action with one hand, when second handle 22 kept away from relatively or was close to first handle 21, second handle 22 drives the structure of riveting and carries out corresponding operation, and hold-down mechanism in the structure of riveting can help the structure of riveting to grasp the rivet better, avoids the rivet to drop.

Specifically, the rivet structure comprises a pull rod 31 with an inner cavity, a push rod 32 with an inner cavity and a clamping jaw 33 from top to bottom in sequence, a limiting sleeve 34 is further sleeved on the outer side of the joint of the pull rod 31 and the push rod, the clamping jaw 33 is limited in the inner cavity of the limiting sleeve 34, the push rod 32 can push the clamping jaw 34 to move under the action of a first pressure spring 331, and a guiding head 35 is arranged at the end part of the clamping jaw 33. The rivet pulling structure is in transmission connection with the second handle 22, and when the second handle 22 rotates relative to the first handle 21, the rivet pulling structure is driven to move; when the second handle 22 moves away from the first handle 21, the pull rod 31 moves downwards, the first pressure spring 331 is compressed, at this time, the mandril 32 drives the jaws 33 to move downwards and open, and a user can clamp the blind rivet by using the jaws 33; when the second handle 22 moves close to the first handle 21, under the action of the restoring force of the first pressure spring 331 and the limiting effect of the limiting sleeve 34, the clamping jaws 33 are gradually tightened and act on the rivet, and after the process is repeated for multiple times, the rivet is broken and the riveting is completed.

Specifically, two sides inside the position limiting sleeve 34 are provided with movable grooves 341, the pressing mechanism includes a second pressure spring 342 disposed in the movable grooves 341, and an end of the second pressure spring 342 is provided with a ball 343. In the process that the jaw 33 moves in the limiting sleeve 34, when the ball 343 is pressed by the jaw 33, the ball 343 moves into the movable groove 341 and extrudes the second pressure spring 342, and the second pressure spring 342 is required to recover the deformation, and generates a reverse acting force on the jaw 33 together with the ball 343, so that the capability of clamping the rivet by the jaw 33 is improved, and the rivet is prevented from falling off; and the ball 343 can change the sliding friction between the claw 33 and the stop collar 34 into rolling friction, and reduce the abrasion between the claw 33 and the stop collar 34.

Specifically, a first rotating shaft 344 is disposed at a center of the ball 343, and two ends of the first rotating shaft 344 are connected to the second pressure spring 342. The ball 343, the first rotating shaft 344, and the second pressing spring 342 are provided such that the ball 343 can rotate about the first rotating shaft 344 as a rotation center.

Specifically, the inner diameter of the movable groove 341 is not smaller than the diameter of the ball 343. If the diameter of the ball 343 is larger than the inner diameter of the movable groove 341, the ball 343 may protrude from the inner surface of the position-restricting sleeve 34 during the movement of the jaw 33 within the position-restricting sleeve 34, thereby hindering the movement of the jaw 33 and possibly causing damage.

Specifically, a connecting piece 221 is arranged at a position of the second handle 22 close to the rivet structure, a tooth piece 222 with a latch 223 is rotatably arranged at one end of the connecting piece 221 far away from the second handle 22, one end of the tooth piece 222 far away from the connecting piece 221 is rotatably connected with the shell 1, and a tooth groove 311 matched with the latch 223 is arranged on the outer side wall of the pull rod 31 close to the second handle 22. When the second handle 22 rotates counterclockwise upwards relative to the first handle 21, the connecting piece 221 connected with the second handle 22 drives the tooth piece 222 to rotate, at this time, as the pull rod 31 is provided with the tooth groove 311 matched with the latch 223 on the tooth piece 222, the pull rod 31 moves downwards, so as to compress the first pressure spring 331, and the pull rod 31 moves downwards; when the second handle 22 is rotated clockwise downward relative to the first handle 21, the pull rod 31 moves upward.

Specifically, the inner cavities of the pull rod 31 and the limiting sleeve 34 are both in a step shape. The arrangement of the stepped inner cavity of the pull rod 31 can limit the first pressure spring 331 in the pull rod 31 only under the action of the pull rod 31 and the ejector rod 32 without the help of other limiting structures; the stepped structure of the stop collar 34 can prevent the pull rod 31 from moving downward for too long.

Specifically, a metal spacer 13 is arranged at the joint of the lead-in head 35 and the shell 1. The rivet is generally made of metal, and the metal spacer 13 at the joint of the leading-in head 35 and the shell 1 can avoid damage when the rivet interacts with the shell 1, and is beneficial to prolonging the service life of the rivet gun.

Specifically, a rotating shaft hole 11 is formed in the housing 1, the second handle 22, the tooth piece 222 and the housing 1 are rotatably connected through a second rotating shaft 12, and a metal spacer 13 is further arranged on the rotating shaft hole 11. When the hand riveter in this application is in use, the second handle 22, the tooth piece 222 and the shell 1 are connected in a rotating mode to generate a large acting force, compared with metal, the strength of the plastic is small, and the metal spacer 13 arranged at the position is beneficial to relieving the acting force directly acting on the shell 1 and prolonging the service life of the whole hand riveter.

Specifically, a torsion spring 4 is arranged on the second rotating shaft 12 between the second handle 22 and the housing 1. The torsion spring 4 is arranged to enable the second handle 22 to reset after rotating relative to the first handle 21, and the operation is convenient.

Specifically, the first handle 21 and the second handle 22 are provided with a fastener 5. The fastener 5 can prevent the second handle 22 from rotating too much relative to the first handle 21.

Specifically, a plurality of reinforcing ribs are arranged in the first handle 21. The reinforcing ribs include a plurality of transverse reinforcing ribs and longitudinal reinforcing ribs, and are arranged in a cross manner, and since the strength of the plastic product is slightly lower than that of the metal product, the provision of the reinforcing ribs in the first handle 21 contributes to increasing the strength of the first handle 21.

Specifically, the first handle 21 is provided with a handle sleeve, and the first handle 21 is provided with a plurality of protrusions 211 for holding. Can help the user to better grasp the hand riveter and avoid slipping.

Specifically, the second handle 22 is a metal part, and a plastic part or a rubber part is sleeved outside the second handle 22. Can be used for protecting the hand of a user and simultaneously avoiding the slipping phenomenon of the user in the operation process.

Claims

1. The utility model provides a rivet gun, is including built-in casing (1) and the handle that has the structure of riveting, the handle is including first handle (21) and second handle (22) that can take place relative rotation, a serial communication port, casing (1) is the working of plastics with first handle (21), casing (1) and first handle (21) integrated into one piece, second handle (22) are connected with the transmission of the structure of riveting, be equipped with hold-down mechanism in the structure of riveting.

2. The riveter according to claim 1, characterized in that the rivet structure comprises a pull rod (31) with an inner cavity, a push rod (32) with an inner cavity and a jaw (33) from top to bottom in sequence, a limit sleeve (34) is further sleeved outside the connection part of the pull rod (31) and the push rod, the jaw (33) is limited in the inner cavity of the limit sleeve (34), the push rod (32) can push the jaw (34) to move under the action of a first pressure spring (331), and a guide head (35) is arranged at the end part of the jaw (33).

3. The hand riveter according to claim 2, wherein the two sides of the inside of the limiting sleeve (34) are provided with movable grooves (341), the pressing mechanism comprises a second pressure spring (342) arranged in the movable grooves (341), and the end of the second pressure spring (342) is provided with a ball (343).

4. A hand riveter according to claim 3, wherein a first rotating shaft (344) is arranged at the centre of the ball (343), and the second pressure spring (342) is connected to both ends of the first rotating shaft (344).

5. A riveter according to claim 3, characterized in that the inner diameter of the movable groove (341) is not smaller than the diameter of the ball (343).

6. The hand riveter according to claim 1, characterized in that the second handle (22) is provided with a connecting piece (221) near the rivet structure, one end of the connecting piece (221) far away from the second handle (22) is rotatably provided with a toothed sheet (222) with a latch (223), one end of the toothed sheet (222) far away from the connecting piece (221) is rotatably connected with the housing (1), and the outer side wall of the pull rod (31) near the second handle (22) is provided with a toothed groove (311) matched with the latch (223).

7. A riveter according to claim 2, wherein the inner cavities of the pull rod (31) and the stop collar (34) are stepped.

8. A riveter according to claim 2, characterised in that the point at which the lead-in head (35) joins the housing (1) is provided with a metal spacer (13).

9. A hand riveter according to claim 1 or 6, wherein the housing (1) is provided with a shaft hole (11), the second handle (22), the teeth (222) and the housing (1) are rotatably connected through a second shaft (12), and the shaft hole (11) is further provided with a metal spacer (13).

10. A riveter according to claim 1 or 6, characterized in that a torsion spring (4) is provided on the second shaft (12) between the second handle (22) and the housing (1).