TW202216386A - Claw assembly of a puller - Google Patents

Abstract

A claw assembly includes a collar, claws and a synchronizer. The collar includes slots. The claws are pivotally connected to the collar. Each of the claws includes a protuberance extending into the collar via one of the slots. The protuberances are movable along the slots. The synchronizer includes a receiving portion for receiving the protuberances. The receiving portion of the synchronizer is movable in the collar between an opening position and a closing position. The synchronizer opens the claws by the protuberances in the opening position. The synchronizer closes the claws by the protuberances in the closing position.

Description

Synchronous jaw opening mechanism and its application of puller tools

The present invention belongs to the technical field of a claw opening, and specifically refers to a synchronous claw opening mechanism that can be opened and closed synchronously and a pulling tool using the same, so that the structure can be effectively simplified, and the angle of the opening claw and the closing claw can be effectively increased. range and enhance the flexibility of the application.

Press, a claw-opening mechanism with multi-claw arms is designed on many mechanical equipment or hand tools to grab, hook or actuate different objects, and for the effectiveness and convenience of work, the claw-opening mechanism on these The claw arms need to be able to be actuated synchronously to open or close relative to each other, such as a puller tool for disassembling and assembling a ring member, a gripper tool for grasping materials, and the like.

In the existing claw opening mechanism, a plurality of hooks extending along the axis of the claw seat are pivoted on the outer edge of the claw seat, and in order to actuate the hooks synchronously, a braking member capable of axial displacement is provided on the claw seat. And a link mechanism is arranged between the brake and each of the hooks to drive synchronously. However, the setting of the link mechanism not only has the problem of complicated structure, but also is limited by the movable angle between the links, so that the hooks can move toward each other. The width of the claw opening that is opened outward or closed inward is also limited. Usually, it can only be equal to or slightly larger than the outer diameter of the claw seat, which cannot meet the needs of the operation, and also affects the flexibility of its operation, causing users to prepare more. Tools with multiple specifications invisibly increase the purchase cost of manufacturers.

In other words, since the existing claw-opening mechanism faces the above-mentioned problems in use, how to develop an innovative structure that can be more ideal and practical still needs to be further developed by the relevant industry. Those who think about the goals and directions of breakthroughs are also those that the present invention intends to explore.

The reason is that the inventors of the present invention have conducted in-depth discussions on the aforementioned problems, and actively sought solutions based on years of experience in research and development in related industries. The wheel-pulling tool can overcome the troubles and inconveniences caused by the limited claw opening range.

Therefore, the main purpose of the present invention is to provide a synchronous claw-opening mechanism, which can effectively simplify the structure, increase the claw-opening range of the claw arm, and improve the convenience and flexibility of the operation.

Furthermore, another main purpose of the present invention is to provide a synchronous claw opening mechanism, which enables the claw arm to synchronously open and close the claw to a large extent, thereby increasing the operable range, thereby reducing product specifications and reducing procurement costs.

In addition, another main purpose of the present invention is to provide a puller tool using a synchronous claw-opening mechanism, which can effectively increase the working stroke of disassembly, can be suitable for different disassembly requirements, and improve its practicability.

Based on this, the present invention mainly realizes the aforementioned purpose and its effect through the following technical means, which includes:

a claw seat with an installation chamber inside;

At least two claw arms, which can be respectively pivoted on the outer edge of the claw seat, and each end edge of the claw arm is respectively formed with at least one convex rafter which penetrates into the installation chamber of the claw seat;

an open claw main body, which can be installed in the installation chamber of the claw base, and an inserting part is formed on the outer edge of the claw open main body for embedding into the convex rafters of the claw arms passing through the claw base;

It is used to actuate the claw main body to synchronously drive the protruding rafters of the claw arms to displace, so that the claw arms can swing relative to the clamping base between an open position and a closed position.

In this way, the protruding rafters of the claw arms are synchronously driven to displace by actuating the claw main body, so that the claw arms can swing relative to the clamp base between an open position and a closed position, thereby effectively simplifying the structure. In addition, the range of opening and closing jaws of the claw arm is increased to increase the scope of operation, thereby reducing product specifications, reducing procurement costs, improving the convenience and flexibility of operation, and improving its practicability.

And the present invention utilizes the following technical means to further achieve the aforementioned purposes and effects; such as:

At least two pivot parts are formed on the periphery of the claw seat, and each of the pivot parts is composed of two opposite pivot ears, and the wall surface of the claw seat is formed between the two pivot ears for the protruding rafter of the claw arm to pass through The long through hole, and the top of each claw arm has a pivot part that can be clamped between the two pivot ears of the claw seat pivot part, and the claw seat and the pivot part of each claw arm respectively form a relative pivot hole , for using a pivot piece to pivot each of the claw arms on the claw seat.

The inserting portion can be formed by a plurality of through holes of equal height and corresponding to the long through holes of the claw seat.

An elastic piece is arranged between the claw-opening main body and the claw seat, so that the claw-opening main body can generate a reverse reset pre-force after relative displacement.

The claw seat and the claw main body can be relatively linearly moved back and forth in a helical manner, and the engaging portion of the claw main body forms an annular embedding groove for the protruding rafters of the claw arms to penetrate and embed.

The mounting inner edge of the claw seat has a threaded section, and the outer edge of the claw body has a threaded section opposite to the claw seat threaded section, so that the claw main body and the claw seat can be screwed back and forth through the threaded section displacement.

The elastic member may be a compression spring disposed between the claw main body and the claw seat.

In order to enable your examiners to further understand the structure, features and other purposes of the present invention, the following are some preferred embodiments of the present invention, which are described in detail with the drawings, and at the same time, those who are familiar with the technical field can implement them in detail. .

10: Claw seat

11: Installation room

12: Screw holes

13: Threaded segment

15: Pivot part

16: pivot ear

17: Pivot hole

18: Long through hole

181: Close limit surface

182: Open limit surface

19: Platen

20: Claw Arm

21: Hook

22: Pivot part

23: Pivot hole

24: Pivot piece

25: convex rafters

251: Close limit surface

252: Open limit surface

30: open claw body

31: Perforation

32: Insert card part

33: Through jack

34: Platen

35: Elastic

36: Annular insert groove

38: Threaded segment

40: Screw

80: Ring member

85: Assembly shaft

Figure 1: It is a three-dimensional appearance schematic diagram of a preferred embodiment of the synchronous jaw opening mechanism of the present invention.

Figure 2: It is a perspective exploded schematic view of a preferred embodiment of the synchronous jaw opening mechanism of the present invention, which is used to illustrate the state of its various components and their relative relationship.

Figure 3: It is a schematic sectional side view of a preferred embodiment of the synchronous claw opening mechanism of the present invention, for explaining its composition and the state when the claw arms are closed.

Fig. 4 is a schematic cross-sectional view of the first action of the preferred embodiment of the synchronous claw opening mechanism of the present invention in actual use, for explaining the state when the claw arms are opened.

Fig. 5 is a schematic cross-sectional view of the second action of the preferred embodiment of the synchronous claw opening mechanism of the present invention in actual use, for illustrating the state when the claw arms are closed.

Fig. 6 is a three-dimensional appearance schematic diagram of another preferred embodiment of the synchronous jaw opening mechanism of the present invention.

Figure 7: It is a schematic diagram of the appearance of the synchronous jaw opening mechanism of the present invention applied to a pulley tool.

Figure 8: It is an exploded schematic diagram of the synchronous jaw opening mechanism of the present invention applied to a pulley tool.

Figure 9: It is a side cross-sectional schematic diagram of the synchronous jaw opening mechanism of the present invention applied to a pulling tool, for explaining its composition and action state.

Figure 10: Another application of the synchronous jaw opening mechanism of the preferred embodiment of the present invention Schematic diagram of the appearance of the puller tool.

Fig. 11 is a perspective exploded schematic view of another preferred embodiment of the synchronous claw opening mechanism of the present invention, for illustrating the state of each element and the relative relationship thereof.

Fig. 12 is a schematic side sectional view of another preferred embodiment of the synchronous claw opening mechanism of the present invention, for explaining its composition and the state when the claw arms are closed.

Fig. 13 is a schematic cross-sectional view of the first action of another preferred embodiment of the synchronous claw opening mechanism of the present invention in actual use, for explaining the state of the claw arm when the claw arm is opened.

Fig. 14 is a schematic cross-sectional view of the second action of another preferred embodiment of the synchronous claw opening mechanism of the present invention in actual use, for illustrating the state when the claw arms are closed.

The present invention is a synchronous claw-opening mechanism and a wheel-pulling tool using the same. Among the specific embodiments of the present invention and its components illustrated in the accompanying drawings, all the front and rear, left and right, top and bottom, upper and lower, The horizontal and vertical references are only for the convenience of description, and do not limit the present invention, nor restrict its components to any position or spatial direction. The dimensions specified in the drawings and the description can be changed according to the design and requirements of the present invention without departing from the scope of the patent application of the present invention.

The main structure of the synchronous claw opening mechanism of the present invention is shown in Figures 1, 2 and 11, which is composed of a claw seat (10), at least two claw arms (20) and a claw opening main body (30). so that the claw-opening main body (30) can synchronously actuate the claw arms (20) on the claw seat (10) to swing between an open position and a closed position;

As for the detailed structure of the preferred embodiment of the present invention, as shown in Figures 2 and 3, the claw seat (10) is in the form of a cylinder, and the claw seat (10) is formed with a through installation chamber (10). 11), and the periphery of the claw seat (10) has at least two pivots for pivoting the claw arm (20) The connecting portion (15) (as shown in Figure 6, there are three pivoting portions (15) and three claw arms (20)], and each pivoting portion (15) is composed of two opposite pivot ears (16) , and a pair of opposite pivot holes (17) are respectively formed on the two pivot ears (16), so that each of the pivot parts (15) can use the two pivot ears (16) to relatively clamp the aforementioned claw arms (20), Furthermore, the claw seat (10) is respectively formed with at least one long through hole (18) communicating with the installation chamber (11) at each pivot portion (15), and the present invention is formed in one of the two pivot ears (16). The long through hole (18) is the main embodiment, and the upper and lower edges of each long through hole (18) are respectively formed with a closed limit surface (181) and an open limit surface (182) for restricting the claw arm (182). 20) The closing angle and opening angle;

A pivot portion (22) corresponding to the pivot portion (15) of the claw base (10) is formed adjacent to the top of the claw arm (20), and the pivot portion (22) has a pivot hole (23), For using a pivot piece (24) to pass through the pivot holes (17, 23) of the claw arm (20) and the claw seat (10), so that each claw arm (20) can be pivoted on the claw seat (10), The pivot member (24) may be composed of detachable bolt rods and nuts, or pivot rods, so as to facilitate disassembly and replacement of claw arms (20) of different specifications, and the top end of each claw arm (20) is based on At least one protruding rafter (25) which can penetrate into the claw seat (10) is respectively formed in the claw arm (20) of the present invention, and a protruding rafter (20) corresponding to the long through hole (18) of the pivot part (15) 25) is the main embodiment, and the upper and lower width of the convex rafter (25) is smaller than the upper and lower width of the long through hole (18), so that the claw arm (20) can use the convex rafter (25) to pass through the claw seat (10). The hole (18) swings inwardly, and the upper and lower edges of the protruding rafters (25) of the claw arm (20) are respectively formed with a closed limit surface (251) and an open limit surface (252) for matching the above-mentioned long The closing limit surface (181) and the opening limit surface (182) of the hole (18) limit the closing angle and the opening angle of the claw arm (20), and the closing limit surface ( 251) and the opening limit surface (252) are inclined toward the free end, which can increase the angle of the closed position and the open position of each claw arm (20) without changing the structure;

In addition, the claw-opening main body (30) is movably installed on the claw seat (10) inside the chamber (11), and the claw body (30) can be actuated by an external force (such as a manual or other power source) to linearly reciprocate relative to the claw seat (10), and the outer edge of the claw body (30) is adjacent to the bottom An inserting portion (32) is formed on the edge, and the inserting portion (32) can be formed by a plurality of through holes (33) of equal height and corresponding to the long through holes (18) of the claw seat (10), without inserting through holes (33). A groove (not shown in the figure) or a ring-shaped inserting groove (36) (as shown in Figure 11) that is not penetrated is formed for the above-mentioned convex rafters (25) of the claw arms (20) to be embedded, so that the opening When the claw body (30) moves up and down, each claw arm (20) can be synchronously actuated to close inward or open outward with the pivot portion (22) as the center, and the engaging portion (32) of the present invention has a relatively long through hole. The through hole (33) of (18) is the main embodiment, which can ensure the strength of the claw main body (30), and lengthen the length of the claw arm (20) convex rafter (25), so that the combination of the two is more reliable It is stable, so that the protruding rafters (25) of the claw arm (20) will not be broken or slipped arbitrarily. According to some embodiments, an elastic member (35) is provided between the claw-opening body (30) and the claw seat (10), so that the claw-opening body (30) can generate a pre-force for automatic reset after displacement, such as After the claw main body (30) is displaced downward to drive each claw arm (20) to open outward, the claw main body (30) can automatically reset upward and drive each claw arm (20) to automatically close inward, and the present invention The main embodiment of the elastic member (35) is a compression spring arranged between the inner top surface of the claw opening body (30) and the bottom surface of the installation chamber (11) of the claw seat (10), so that the elastic member (35) is It is hidden in the main body (30) of the claw opening, and will not be exposed to accidentally pinch people, which can improve the safety of use;

Thereby, each of the claw arms (20) on the claw base (10) can be driven to swing between the open position and the closed position synchronously by actuating the claw main body (30), thereby forming a simple structure, open Synchronous jaw opening mechanism with large amplitude and angle.

As for the actual operation of the synchronous claw-opening mechanism of the present invention, as shown in Figure 3, the claw-opening body (30) on the claw seat (10) is moved upward by the restoring pre-force of the elastic member (35) before use, so that the The claw-opening body (30) can drive the protruding rafters (25) of the claw arms (20) on the claw seat (10) upward, so that the claw arms (20) are closed downward with the pivot member (24) as the axis state, and since each of the The protruding rafters (25) of the claw arms (20) abut against the upper edge closing limit surfaces (251, 181) of the long through holes (18) of the claw base (10), so that each claw arm (20) of the present invention is closed When the angle reaches the minimum angle, the upward movement position of the claw opening main body (30) can be restricted, and the elastic force of the elastic member (35) can be avoided, so that the claw opening main body (30) of the present invention does not need to be additionally provided with a fixing or limiting mechanism;

When the claw arm (20) is to be actuated, as shown in Figures 3 and 4, the claw opening body (30) on the claw seat (10) is moved downward, and the pressing action can be performed manually or by the operator. Other power sources such as linear pressure cylinders or screws are used to move the claw-opening body (30) downward and synchronously compress the elastic member (35) to generate a restoring pre-force, which can be synchronized when the claw-opening body (30) is downward. The protruding rafters (25) of the claw arms (20) pivoted on the claw seat (10) are actuated downward, so that each claw arm (20) can be pivoted outward at the pivot point of the claw arm (20) with the claw seat (10). Open to a desired angle, as shown in Figure 4, when each of the claw arms (20) of the present invention is opened to the maximum angle, the opening limit surface ( 182) The opening limit surface (182) of the lower edge of the long through hole (18) of the claw seat (10) can be abutted;

Conversely, as shown in Figure 5, when the claw-opening main body (30) on the claw seat (10) is moved upward, or the claw-opening main body (30) is upwardly acted by the restoring force of the elastic piece (35), the When the claw main body (30) is upward, the claw arm (20) can be actuated synchronously and the convex rafter (25) can be moved upward, so that each claw arm (20) can be pivoted with the claw seat (10) to be closed inward. to the desired angle.

And the synchronous claw opening mechanism of the present invention can be applied to different fields, such as a puller tool as shown in Figures 7, 8, 9 and 10, wherein Figures 7, 8, and 9 are the pullers of the two claw arms (20). tool, and Figure 10 shows the puller tool of the three-claw arm (20). The pulling tool is provided with a pusher between the claw base (10) and the claw-opening main body, and the pusher can be a screw, a pressure cylinder with a telescopic rod, or other opposite claw bases (10). It is a linear displacement element, and the pusher of the present invention takes a screw (40) as the main embodiment, for each of the claw arms (20) to synchronously clamp an annular member (80) on an assembly shaft (85) after , the screw (40) screwed on the claw seat (10) can be used to push the device A shaft (85) is arranged so that the annular member (80) can be disassembled by relative displacement;

In the detailed structure of this embodiment, a screw hole (12) is formed in the center of the bottom surface of the mounting chamber (11) of the claw seat (10) for screwing the aforementioned screw (40), and the outer edge of the top of the claw seat (10) There is a pressure plate (19), and the bottom end of each claw arm (20) has a hook portion (21) for hooking the bottom edge of the annular member (80), and the top of the claw opening body (30) is formed with a corresponding screw. The through hole (31) of the contact hole (12) is for the top end of the screw (40) to pass through, and the outer edge of the top end of the claw-opening main body (30) has a pressure plate (34), so that the operation can manually press the claw seat (10) The pressure plates (19, 34) of the claw-opening main body (30) actuate the claw-opening main body (30) to drive the claw arms (20).

Furthermore, in actual use of the wheel pulling tool applying the synchronous claw opening mechanism of the present invention, as shown in FIG. When the return pre-force acts to displace upward, and drive the protruding rafters (25) of the claw arms (20) on the claw base (10) to move upward synchronously, one end of the hook portion (21) of each claw arm (20) can be made downward. closed, and the hooks (21) of each claw arm (20) can be synchronously and smoothly hooked on the bottom surface edge of the annular member (80), and then push the assembly shaft downward through the screw (40). (85), since the annular member (80) is hooked by the bottom edge of the hook portion (21) of each of the claw arms (20) of the claw seat (10), the assembly shaft (85) is supported by the screw (40) Push to produce relative movement with the annular member (80), so that the assembly shaft (85) and the annular member (80) can be gradually separated, and finally the annular member (80) can be completely disengaged from the assembly shaft (85).

Yet another preferred embodiment of the present invention, as shown in Figures 11 and 12, the claw seat (10) and the claw-opening main body (30) can be displaced relative to each other in a helical manner, wherein the claw seat (10) The inner edge of the mounting chamber (11) of the ) has a threaded segment (13), and the outer edge of the claw body (30) has a threaded segment (38) opposite to the threaded segment (13), so that the claw body ( 30) and the claw seat (10) can be helically displaced through the thread segments (38, 13), and the engaging portion (32) of the claw main body (30) can be an annular inserting groove (36) that is not penetrated, For each protrusion of the claw arm (20) The rafters (25) are inserted and embedded, so that when the claw-opening body (30) moves up and down, the claw arms (20) can be synchronously actuated to open outward with the pivot portion (15) of the claw seat (10) as the center (eg Fig. 13] or closed inward [as shown in Fig. 14].

The actual operation of the aforementioned embodiment of the synchronous claw-opening mechanism is shown in Figure 12. Before use, the claw seat (10) can be screwed upward relative to the claw-opening main body (30), so that the claw-opening main body (30) can be screwed upward. ) can drive the protruding rafters (25) of the claw arms (20) upwards synchronously through the annular insert groove (36) of the inserting part (32), so that the claw arms (20) can synchronously move toward the central axis of the claw seat (10). is closed. And when the claw arm (20) is about to open the claw, as shown in Fig. 13, the claw opening body (30) on the claw seat (10) is rotated to move downward, and when the claw opening body (30) downwards When the claw arm (20) pivoted on the claw seat (10) can be actuated synchronously, the convex rafters (25) can be moved downward, so that each of the claw arms (20) can be pivoted with the claw seat (10) as the axis. And flare out to the desired angle. On the contrary, when the claw arm (20) is to be actuated to close the claw again, as shown in Fig. 14, the claw body (30) on the claw seat (10) is reversely rotated and displaced upward, so that each claw arm (20) ) can be pivoted with the claw seat (10) as the axis and closed inward to a desired angle.

Through the above-mentioned design and description, the synchronous claw opening mechanism of the present invention can drive a plurality of claw arms (20) pivoted on the claw base (10) by actuating the claw opening main body (30) on the claw base (10). The synchronous claw opening mechanism of the present invention is not only simple in structure, but also can increase the opening and closing claws of the claw arms (20) because the claw arms (20) can move synchronously. , and increase the scope of operation, thereby reducing product specifications, reducing procurement costs, improving the convenience and flexibility of operations, and improving its practicability.

From this, it can be understood that the present invention is an excellent creation, in addition to effectively solving the problems faced by habitual users, it also greatly improves the efficacy, and there is no identical or similar product creation or public use in the same technical field. , and at the same time has the enhancement of efficacy, so the present invention has met the requirements of "novelty" and "progressiveness" of the invention patent, and the application for the invention patent is filed in accordance with the law.

10: Claw seat

11: Installation room

15: Pivot part

16: pivot ear

17: Pivot hole

18: Long through hole

20: Claw Arm

21: Hook

22: Pivot part

23: Pivot hole

24: Pivot piece

25: convex rafters

30: open claw body

32: Insert card part

33: Through jack

35: Elastic

Claims (10)

A synchronous claw opening mechanism, comprising: a claw seat with an installation chamber inside; At least two claw arms can be pivoted on the outer edge of the claw seat respectively, and the end edges of the claw arms are respectively At least one convex rafter is formed which penetrates into the installation chamber of the claw seat; an open claw main body, which can be installed in the installation chamber of the claw base, and an inserting part is formed on the outer edge of the claw open main body for embedding into the convex rafters of the claw arms passing through the claw base; It is used to actuate the claw main body to synchronously drive the protruding rafters of the claw arms to displace, so that the claw arms can swing relative to the clamping base between an open position and a closed position. The synchronous claw-opening mechanism as claimed in claim 1, wherein at least two pivot parts are formed on the periphery of the claw seat, and each of the pivot parts is formed by two opposite pivot ears, and the claw seat wall faces the two pivot ears. A long through hole for the protruding rafter of the claw arm is formed between, and the top of each claw arm has a pivot part that can be clamped between the two pivot ears of the pivot part of the claw seat, and the claw seat and each of the claw arms are connected. The pivoting parts respectively form a corresponding pivot hole for pivoting each of the claw arms on the claw seat by using a pivot piece respectively. The synchronous claw-opening mechanism according to claim 2, wherein the inserting portion can be formed by a plurality of through-holes of equal height and corresponding to the long through-holes of the claw seat. The synchronous claw-opening mechanism according to claim 1, wherein an elastic member is arranged between the claw-opening main body and the claw seat, so that the claw-opening main body can generate a reverse reset pre-force after relative displacement. The synchronous claw-opening mechanism according to claim 4, wherein the elastic member can be a compression spring provided between the claw-opening main body and the claw seat. The synchronous claw opening mechanism according to claim 1, wherein the claw seat and the claw opening body can be relatively linearly moved back and forth in a helical manner, and the engaging portion of the claw opening body is formed with an annular embedding groove for each The protruding rafter of the claw arm is inserted and embedded. The synchronous claw opening mechanism of claim 6, wherein the inner edge of the claw seat has a threaded segment, and the outer edge of the claw main body has a threaded segment opposite to the claw seat threaded segment, so that the claw main body The claw seat can be screwed back and forth through the thread segment. A pulley tool applying the synchronous claw-opening mechanism described in any one of claims 1 to 7, for disassembling a ring-shaped member on an assembly shaft, the claw seat axis of the synchronous claw-opening mechanism is provided with a linearly displaceable The ejector can use the linear displacement of the ejector to move the assembly shaft when the claw arm of the synchronous claw-opening mechanism hooks the annular member. The pulley tool as claimed in claim 8, wherein the pushing member can be a screw screw screwed on the claw seat for pushing against and pushing the assembly shaft by screwing the screw rod. The wheel pulling tool as claimed in claim 8, wherein the pushing member can be a pressure cylinder provided on the claw base, and the pressure cylinder has a linearly displaceable telescopic rod for pushing through the telescopic rod that drives the pressure cylinder Push the assembly shaft.

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