JP3002692U - Composite snap ring pliers - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a plier that allows the snap ring for the shaft and the snap ring for the hole to be attached and removed. [Structure] A pair of two-piece closed type and external type main body structure pieces are provided, both are connected at a central axis point, a spring is provided between the handles, and a groove and a screw are provided in a claw holding portion of the main body configuration piece. A hole is formed, a replaceable claw is attached with a fixing piece and a bolt, a handle is provided on the closing type main body constituent piece, and they are connected in a substantially parallel state, and the external tension type main body constituent piece intersects at its central axis point position. Of the two sets of main body constituent pieces so as to be opposite to each other with the side provided with the fixing piece as the outer edge, and the central axis point positions of the two are connected by a pivot to connect the outer body type main body constituent pieces. The lower end is connected to the handle position of the corresponding closed body component piece with rivets, and the opening and closing operation of the two body component pieces is controlled by operating one set of handle, and various snaps are combined to change the shape. Use to attach and detach the ring.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a kind of pliers, and more particularly to a composite snap ring plier which can be used for attaching and detaching a snap ring for a shaft and a snap ring for a hole.

[0002]

[Prior art]

 The snap ring is used for the shaft and the hole, and is widely used for positioning. The body has considerable internal or external tension and therefore must be either externally or internally clamped with special pliers and thus condensed or externally stretched prior to being used for positioning. Earlier used pliers are shown in FIGS. Among them, FIG. 1 shows two main body constituent pieces of the same shape, each having a handle on the lower stage, which are connected to each other in an intersecting state. A groove and a screw hole are provided at the tip of the upper part of the body component piece, and an appropriate claw is inserted into the groove, and the fixing piece and the screw hole are fastened with a bolt to fix the claw. Further, a spring is provided between the handles of the main body component pieces. The action of the spring is that, in a static state, the handle is externally stretched to externally stretch the upper portion of the main body component piece, and when the handle is gripped and pressed, an inward force is generated in the upper portions of the two main body component pieces. is there. By combining this with an appropriate claw, it is used for the operation of the snap ring for holes that requires internal pressure.

The conventional snap ring pliers shown in FIG. 2 have a shape in which a handle is provided on the lower stage of two body forming pieces of the same shape, and the central axial point positions of the body forming pieces are connected to each other so as to be close to a parallel state. Is. A groove and a screw hole are further provided at the tip of the upper part of each body component piece, and a claw according to the purpose of use is inserted into the groove, and the claw is fixed by fastening the fixing piece and the screw hole with a bolt. Further, a spring is provided between the handles of the main body component pieces. The action of the spring causes the handle to be externally stretched in a static state, the upper part of the body component piece to be closed, and the upper part of the body component piece to be externally stretched when the handle is gripped and pressed. By combining this with an appropriate claw, it is used for the operation of the shaft snap ring that requires external tension.

The above-mentioned two types of pliers are designed for use in hole and shaft snap rings, respectively. At the same time, it is possible to switch to different types depending on the position where the snap ring is fitted, which is very convenient in operation. However, this plier can be used only for either the hole snap ring or the shaft snap ring in one form, and the tip claw must be replaced depending on the position where the snap ring is fitted. There was also an opinion that it is inconvenient to use in that it does not happen. That is, in terms of the simple operation function, the user said that the above two conventional pliers are not practical.

In order to solve the above drawbacks of the early pliers, the pliers shown in FIGS. 3 and 4 have appeared on the market. In terms of manufacturing, this is one in which the upper part of the body component piece and the claw are fitted together. Of these, FIG. 3 shows an external tension type pliers which is applied to a snap ring for holes by intersecting two main body constituent pieces, and FIG. 4 shows two main body constituent pieces in a substantially parallel shape. This is a closed plier that is provided for shaft snap rings. The above two types of pliers are designed to meet the user's demands for simple operation functions and are easy to operate. However, it could not be used for both the hole and shaft snap rings, and two types of pliers had to be prepared, and it was not possible to cope with changes in the position where the snap ring was fitted.

As described above, in the claw exchange type pliers, the user needs to prepare two types of pliers and several sets of claws, and in the fixed type pliers, two or more different types of pliers are required. It was impractical because it needed to be prepared, the purchase cost was high, and it was inconvenient to carry.

For this reason, pliers that can be used for interchangeable hole and shaft snap rings have been designed and produced. This is shown in FIGS. Figure 5 shows that the handles are stacked in parallel at the central axis point position of their heads and joined together, and they are placed at appropriate positions above and below the central point of each handle. A pair of fixing pins projecting in the opposite direction are provided, and the claws are connected to the handle from the front and back respectively. In addition, a spring is provided at an appropriate position between the two handles, and normally, the two hands are separated and the head above the handles is closed.

The claws are formed from the claw pieces of the same shape, and the middle steps of the claws are curved so as to project further rearward, and the claws are overlapped with each other at the center point of the curved portions and crossed. Through holes are provided at the positions above and below the center point of the curved part of each claw, and two sets of fixing pins provided on the front or back of the corresponding handle are inserted, and the bolt is located at the center point of the claw. Insert and lock with handle. The toe of each nail is formed straight or curved.

As shown in FIG. 3, at the time of use, the lower through hole of the curved portion of the lower stage of the nail is passed through the fixing pin below the handle and locked with a bolt. The overall shape of the pliers is such that the two handles are externally stretched in the static state and the two claws are also in the separated state. When the handle is squeezed and pressed from this state, the two claws are closed inwardly, so that they are subjected to the condensation operation of the hole snap ring.

Further shown in FIG. 4 is the plier shown in FIG. 3, in which a fixing pin on the handle connecting portion is passed through and locked in the upper through hole of the curved portion of the claw. In FIG. 4, the shape of the entire pliers is that the two handles are externally stretched in the static state to show a separated state, and the two claws have a closed state. When the handle is squeezed from this state and pressed, the two pawls open outward, which serves to apply the external force to the shaft snap ring.

In the snap ring pliers shown in FIGS. 3 and 4, the upper through hole provided in the lower curved portion of the claw is connected to the upper fixing pin of the handle connecting portion or the lower through hole is connected to the handle connecting portion. By passing through the lower fixing pin of the part, it is possible to switch to the form for the hole and the snap ring for the shaft. That is, one plier can be used for both.

The connecting portion of the claws of the pliers is configured by overlapping and intersecting portions, and a step of providing a through hole is required in that portion, and since the volume is large, manufacturing costs are high, and portable At times, it was inconvenient because a relatively large storage box was required due to the large volume of the claw joints. In addition, when changing the form according to the purpose of use, it is necessary to insert the fixing pin provided on the handle connecting part into the through hole provided on the connecting part of the claw in order to fix the connecting part of the claw and the handle. , The change operation could not be performed promptly.

[0013]

[Problems to be solved by the device]

 According to the present invention, by providing two sets of body component pieces and pressing and gripping one set of handles, one set of body component piece upper steps is opened at the same time, and another set of body component piece upper steps is closed. It is an object of the present invention to provide a composite snap ring plier, which can be used for both shaft and hole snap rings and can be used for shaft and hole snap rings at the same time depending on the structure.

Next, according to the present invention, the structure of the pliers can be adapted so that the replacement toes of the pliers which are commercially available in the related art can be used, and the pliers can cope with changes in the fixed position of the snap ring. It is an issue.

[0015]

[Means for Solving the Problems]

 The present invention is a two-piece one-piece closed type body component piece that holds a snap ring for a shaft and uses it for attachment / detachment, and a two-piece one set external type that holds a snap ring for a shaft and uses it for attachment / detachment. The body component pieces are provided, the two are overlapped and connected at the central axis point, and the spring is provided between the handles, and the appropriate groove and screw hole are formed in the claw holding portions of the two body component pieces. The fixing piece and the bolt corresponding to the above are combined, the claws are attached, the two pieces of the closing type main body constituting piece are provided with the same shape and the handle is provided, and they are overlapped at the central axis point position to be substantially parallel to each other. The externally-extending main body component pieces are overlapped at the central axis point position to be in an intersecting state, and are superposed so that the sides of the two main body component pieces on which the fixing pieces are provided are outer edges and are opposite to each other. , Connect the center axis points of both with a pivot, and simultaneously The lower end of one piece is connected to the handle position of the corresponding closed body component piece with a rivet, which controls the opening and closing operation of two body component pieces by one handle operation, and the change of the claws of various shapes Combine.

Further, instead of the handle of the closing type body component piece, a handle may be provided on the external type body component piece.

[0017]

[Action]

 The actual use of the composite snap ring pliers of the present invention is shown in FIGS. 8 and 9. 8 shows that one set of the claw (80) is assembled with the groove of the fixing piece (70) in the groove of the claw holding portions (55), (56) of the closing type main body constituting member (50). It is in a state of being inserted and fixed in the groove formed together. The claw (80) is used for holding the snap ring, and the handle is grasped and pressed to put the claw holding parts (55), (56) in an externally stretched state, and then the shaft snap ring is externally stretched.

Further, as shown in FIG. 9, a set of pawls (80) is fixed to the groove of the pawl holding portions (63) and (64) of the external tension type main body constituting member (60). ) It is in a state of being inserted and fixed in the groove formed by combining the grooves. The claw (80) is used to hold the snap ring, and the handle is gripped and pressed to bring the claw holding portions (63) and (64) into a closed state, and the claw (80) is used for internal pressure operation of the hole snap ring.

[0019]

【Example】

 FIG. 7 is a three-dimensional exploded view of the present invention. As shown here, the present invention mainly includes a set of closed body components (50) for holding and attaching and detaching a shaft snap ring and a hole snap ring. A set of externally-extending body component (60) is provided for attachment. The two sets of components are superposed at a central axis point and are connected by a pivot.

The closure type body constituting member (50) is composed of the closure type body constituting pieces (51) and (52) of the same shape, and they are superposed and coupled at the position of the central axis point (57) thereof. Set in a normal state. Claw holders (55) and (56) are provided on the upper ends of the closing type body component pieces (51) and (52), and the groove (58) is provided at an appropriate position of the claw holders (55) and (56). ) And screw holes (59). Further, a fixing piece (70) provided with a groove (71) corresponding to the groove (58) and a screw hole (59) is provided. By inserting the groove (58) of the claw holding portions (55), (56) and the groove (71) of the fixing piece (70), insert a claw (80) having a different shape such as a straight claw or a curved claw, The fixing piece (70) is fixed to the claw holding portions (55) and (56) with bolts (73), and the claws (80) are attached.

The outer-stretch-type main body constituent member (60) is composed of outer-stretch-type main body constituent pieces (61) and (62) having the same shape, and they are superposed at the central axis point (65) and are joined and crossed. State. The upper end of the claw holders (63) and (64) has grooves and screw holes similar to the claw holders (55) and (56) of the closure type main body component pieces (51) and (52). Is provided and the claw (8) is fixed by combining the fixing piece (74) and the bolt (75).

With the outer edge surface of the two sets of body component members (50) and (60) on which the fixing pieces are fastened, the outer green surfaces of the two body component members (50) and (60) are placed outside. Then, they are superposed and pivotally connected at the central axis points (51) and (56) of both.

At the same time, the lower ends of the two pieces of the external tension type body component (61), (62) of the external tension type body component (60) are connected to the handles (53), () of the closing type body component (50). The pivot (76) is connected to the corresponding position of (54) and the opening and closing of both are controlled simultaneously by the handle control.

Further, a spring (77) is provided at a position where the pivot (76) is provided substantially below the central axis points (75) and (65) of the two sets of main body constituting members (50) and (60). .

By the action of the spring (77), in a static state, the handles (53) and (54) are externally stretched and are in a separated state, and the upper step portion of the closure type main body component piece (50) is in a closed state. Thus, the upper step of the outer-stretched main body component (60) is in a separated state.

When the handles (53) and (54) are gripped and pressed, the closing body component (50) and the external tensioning body component (60) are simultaneously operated, the former is in a separated state and the latter is closed. Exhibit a state.

What has been described above is one embodiment of the present invention, and instead of the handle of the closing type main body component piece, a handle may be provided on the external tension type main body component piece, and the same effect can be obtained. It shall be included within the scope of implementation of this proposal.

[0028]

[Effect of device]

 As described above, according to the present invention, by providing the two sets of the main body constituent pieces of the external tension type and the closing type, and additionally, the claws are exchangeable, it is possible to attach and detach the snap ring for the hole and the shaft. It can be used and work can be performed more smoothly. Moreover, the nails used in the present invention are exchangeable nails that are generally commercially available, and there is no need to separately manufacture special-specific nails, which has an economical and practical effect.

[Brief description of drawings]

FIG. 1 is a front view of a conventional claw exchange type external tension type snap ring pliers.

FIG. 2 is a front view of a conventional snap-type snap ring pliers of replaceable pawl type.

FIG. 3 is a perspective view of a conventional fixed external tension type snap ring pliers.

FIG. 4 is a perspective view of a conventional fixed closed snap ring pliers.

FIG. 5 is a perspective view of a composite snap ring pliers that can be used as a conventional shaft and hole snap ring in an externally used state.

FIG. 6 is a perspective view of a combined snap ring pliers, which can be used as a conventional shaft and hole snap ring, in a closed use state.

FIG. 7 is an exploded perspective view of the present invention.

FIG. 8 is a front view showing a use state of the closing type main body component piece of the present invention.

FIG. 9 is a front view showing a usage state of the externally-extending body component piece of the present invention.

[Explanation of symbols]

(50) Closed type body component (51) (52) Closed type body component (53) (54) Handle (55) (56) Claw holding part (57) Center axis point (58) Groove (59) Screw hole (60) Externally Stretched Body Component (61) (62) Externally Stretched Body Component (63) (64)
Claw holding part (65) Center axis point (70) Fixed piece (71) Groove (72) Screw hole (73) Bolt (76) Pivot (77) Spring (80) Claw

Claims (2)

[Scope of utility model registration request] 1. A pair of two-piece closed body component pieces for holding a shaft snap ring for attachment / detachment thereof, and a two-piece set of two pieces for holding a shaft snap ring for attachment / detachment. Type body component pieces are provided, the two are overlapped and connected at a central axis point, and a spring is provided between the handles, and an appropriate groove and screw hole are formed in the claw holding portions of the two body component pieces. Corresponding fixing pieces and bolts are combined, claws are attached, and the two pieces of the closing type body constituting pieces are provided in the same shape and provided with a handle, and they are overlapped at the central axis point position to be in a substantially parallel state. The externally-extending body component pieces are overlapped at a central axis point position to be in an intersecting state, and the two body component pieces are overlapped so as to face each other with the side provided with the fixing piece as an outer edge. The central axis point position is connected by a pivot, and at the same time, an external tension type body component piece The lower end of the rivet is connected to the handle position of the corresponding closed body component piece with rivets, which controls the opening / closing operation of the two body component pieces with one handle operation, and the change of the claws of various shapes , Snap ring pliers that can be used as both shaft and hole snap rings to facilitate the installation and removal of various snap rings. 2. In place of the handle of the closing type body component,
The composite snap ring pliers of claim 1, wherein a handle may be provided on the outer body component.