TW202012119A - Puller structure including a screw rod, a connecting piece, a fixed seat and a linkage seat - Google Patents

Abstract

This invention discloses a puller structure including a screw rod, a connecting piece, a fixed seat and a linkage seat; the top end of the connecting piece is provided with a specially-shaped nut; the screw rod downwards extends through the specially-shaped nut and the fixed seat and penetrates through the linkage seat; the connecting piece downwards and fixedly connects with the linkage seat; the fixed seat extends obliquely downwards to be provided with a plurality of first fixed arms; the linkage seat outwards extends to be provided with a plurality of second fixed arms; the positions of the first fixed arms correspond to those of the second fixed arms, and the first fixed arms are shorter than the second fixed arms; each of the first fixed arms and the second fixed arms is provided with a groove extending an extension direction thereof, and a clamping arm is arranged in the groove of each of the two fixed arms by a convex block in a sliding way.

Description

Puller structure

The invention relates to hand tools, especially a structure of a puller.

The conventional puller has two types of structures as shown in Figure 5 and Figure 6. The clamp arm can be used to firmly fasten the workpiece (such as a bearing), and then the screw can be used to push or pull the shaft in the workpiece by the screw action. Out. According to this, the premise that the puller can operate correctly and achieve the desired effect is the stability of the clamping arm to hold the workpiece. Therefore, if the size of the workpiece is larger, the clamping distance that the clamping arm can form needs to be larger to meet the fastening. Artifact requirements.

The clamping arm 71 of the conventional puller shown in FIG. 5 is pivotally connected to a fixed-length connecting arm 72 at the top, and then connected to a driving arm 73 to drive the clamping arm 71 to open to form a clamping distance, and The maximum distance that the clamp arm 71 can open is called the span. As shown in the figure, when the puller is used on a larger work piece 74, the size of the work piece 74 is between the clamping distance and the span of the puller, because the clamping arm 71 is pivotally connected to the connection At the fixed position of the arm 72, the clamping distance cannot be further expanded, so that the workpiece 74 cannot be held firmly.

The clamp arm 81 of the conventional puller shown in FIG. 6 is slidably connected to a fixed-length connecting arm 82 at the top, and the clamping distance and the span can be formed to be equal, so this type of The puller can make the clamp arm 81 open as long as it can firmly hold the workpiece 83. However, the connecting arm 82 of such a puller is usually long, so it occupies an excessively large volume, which is very inconvenient in storage.

In view of this, how to improve the above problems is the primary problem to be solved by the present invention.

The main purpose of the present invention is to provide a puller structure that can be stretched with a sufficient span to form a larger clamping distance, and thus can be fixed on a larger workpiece, thereby increasing the usable range.

To achieve the foregoing purpose, the present invention provides a puller structure, which includes a screw, a connecting member, a fixed seat and a linkage seat, the fixed seat is provided with a screw hole, the linkage seat is provided with a perforation, the connection piece A special-shaped nut is arranged on the top of the screw, and the screw is screwed and extends downward through the screw hole of the special-shaped nut and the fixed seat, and through the perforation of the linkage seat, the connecting member extends downward and is arranged at intervals An extension arm, the extension arm is fixed to the linkage base, the fixation base extends outwardly with a number of first fixed arms, the linkage base extends outwardly with a number of second fixed arms, and each of the first fixation arms is separately from the extension arm Extend at intervals, and the positions of the first fixing arm and the second fixing arm correspond up and down, the corresponding first fixing arm and the second fixing arm are connected to a clamping arm; each first fixing arm is inclined from the fixing base The second fixed arm extends from the linkage base in an arc shape. The length of the first fixed arm is less than the length of the second fixed arm. The first fixed arm is provided with a direction along its extension An extended first groove, the second fixing arm is provided with a second groove extending along its extending direction, and the clamping arm is slidably disposed on the first groove and a second protrusion respectively In the second trench.

In an embodiment, the first groove is recessed upward from the bottom surface of the first fixing arm, and a first long slide slot is opened on both sides of the first fixing arm, along which the first length A plurality of wavy positioning pockets are provided on the bottom edge of the chute; the first protrusion is provided on both sides of the clamping arm facing the first long chute, and can slide through the first long chute In the slot. The second groove is formed by penetrating the second fixing arm up and down, and a second long slide slot is formed on both sides of the second fixing arm; the second protrusion is provided on the clamping arm to face the second long Both sides of the chute can slide through the second long chute.

However, it is not difficult to obtain an in-depth understanding from the following detailed descriptions and drawings of the selected embodiments.

Please refer to Figures 1 and 2, which show the structure of the puller provided by the present invention, which includes a screw 1, a connecting member 2, a fixed seat 3 and a linkage seat 4. The top of the connecting member 2 is provided with a special-shaped nut 21, the fixing seat 3 is located below the connecting member 2, and the linking seat 4 is located below the fixing seat 3, the connecting member 2 protrudes downward three extending arms 22, each extension arm 22 is arranged at intervals and fixedly connected to the linkage base 4. The fixing seat 3 is provided with a screw hole 31, the linkage seat 4 is provided with a perforation 41, the screw 1 is screwed to the special-shaped nut 21 and is screwed down to the fixing seat 3 through the screw hole 31, and then continues to extend downward Through the perforation 41 of the linkage seat 4.

Upwards, the fixing base 3 extends outwards with three first fixing arms 32, and each first fixing arm 32 extends from the interval of the extending arm 22; wherein each first fixing arm 32 is further defined from the The fixing seat 3 extends out obliquely downward. Furthermore, the linkage base 4 is extended with three second fixed arms 42, wherein it is further defined that each second fixed arm 42 extends from the linkage base 4 in an arc shape. The position of the first fixing arm 32 corresponds to the position of the second fixing arm 42 up and down, and the length of the first fixing arm 32 is smaller than the length of the second fixing arm 42.

The above-mentioned first fixing arm 32 is provided with a first groove 33 extending along its extending direction, wherein in this embodiment, the first groove 33 is recessed upward from the bottom surface of the first fixing arm 32, A first long slide groove 34 is formed on both sides of the first fixed arm 32, wherein a plurality of wave-shaped positioning recesses 341 are provided along the bottom edge of the first long slide groove 34. On the other hand, the second fixing arm 42 is provided with a second groove 43 extending along its extending direction, wherein in this embodiment, the second groove 43 is formed by penetrating the second fixing arm 42 up and down, and A second long slide groove 44 is formed on both sides of the second fixing arm 42

A clamp arm 5 is connected to the first fixed arm 32 and the second fixed arm 42 corresponding to the position, and a hook portion 51 for hooking the workpiece is provided at the bottom end thereof, and the clamp arm 5 extends through the first fixed arm 32 in the first groove 33 and the second groove 43 of the second fixed arm 42, and the clamping arm 5 is provided with a first protrusion 52 on both sides facing the first long slide groove 34, and face A second protrusion 53 is provided on both sides of the second long slide groove 44, and the clamp arm 5 is slidably disposed on the first long slide groove 34 and the second slide with a first protrusion 52 and a second protrusion 53 respectively In the second long sliding groove 44, the position where it is connected to the first fixing arm 32 and the second fixing arm 42 can be changed.

With the above structure, as shown in Fig. 3, the present invention firstly corresponds to the size of the workpiece 6A to be operated, and the connecting member 2 is pushed by operating the special-shaped nut 21, and the linkage base 4 is moved, Then, the second fixing arm 42 is adjusted to move to a proper position, and then the clamping arm 5 can pass through the first protrusion 52 and the second protrusion 53 in the first long slide groove 34 and the second long slide groove respectively Slide freely in 44 to adjust the opening of each clamping arm 5 to the opening corresponding to the size of the workpiece 6A to buckle the workpiece 6A, you can remove the shaft of the workpiece 6A by operating the screw 1 to remove When the shaft is used, each clamping arm 5 can be clamped in one of the positioning recesses 341 of the first long slide groove 34 by the first protrusion 52 to obtain a stable fixing position.

Through the above description, it can be understood that the present invention can change the span of each clamping arm 5 on the first fixing arm 32 and the second fixing arm 42 to change its span, that is, change its clamping distance, so it is suitable for Workpieces of different sizes. When the size of the workpiece 6B is larger than that shown in FIG. 3, as shown in FIG. 4, the present invention can combine the first protrusion 52 at the top of each clamping arm 5 with the first fixing arm 32 The position of the connection slides inward, and the position where the second projection 53 in the middle of each clamp arm 5 connects with the second fixed arm 42 slides outward, so that the span and the clamp distance of each clamp arm 5 can be made even more Expand to apply to this workpiece 6B.

Another advantage of the present invention is that although the present invention can be applied to larger workpieces, the length of the first fixed arm 32 is less than the length of the second fixed arm 42 so that the overall occupied volume is small, which is beneficial to Storage.

However, the disclosures of the above embodiments are only used to illustrate the present invention, not to limit the present invention. Therefore, the replacement of equivalent elements should still belong to the scope of the present invention.

In summary, those who are familiar with this skill can understand that the present invention can indeed achieve the aforementioned objectives, and in fact have complied with the provisions of the Patent Law, and file an application in accordance with the law.

1: Screw 2: Connection piece 21: Shaped nut 22: Extension arm 3: fixed seat 31: screw hole 32: The first fixed arm 33: The first groove 34: The first long chute 341: Locating pockets 4: Linked seat 41: Perforation 42: Second fixed arm 43: Second groove 44: The second longest chute 5: Clamp arm 51: Hook 52: The first bump 53: Second bump 6A, 6B: Workpiece 71: Clamp arm 72: connecting arm 73: Drive arm 74: Workpiece 81: Clamp arm 82: connecting arm 83: Workpiece

Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is a three-dimensional exploded schematic diagram of the present invention; Figures 3 and 4 are schematic diagrams of the use state of the present invention; Figure 5 is a plan schematic diagram of a conventional structure; Figure 6 is A schematic plan view of another conventional structure.

1: screw

2: connector

21: Shaped nut

22: Extension arm

3: fixed seat

32: First fixed arm

34: The first long chute

341: positioning pocket

4: linkage seat

42: Second fixed arm

44: second longest chute

5: Clamp arm

51: hook

52: First bump

53: Second bump

Claims (3)

A puller structure includes a screw, a connecting piece, a fixing seat and a linkage seat. The fixing seat is provided with a screw hole, the linkage seat is provided with a perforation, and a top end of the connecting piece is provided with a special-shaped nut. The screw is screwed and penetrates downward through the screw hole of the special-shaped nut and the fixed seat, and passes through the perforation of the linkage seat, the connecting piece extends downwardly a number of spaced extension arms, the extension arms are fixedly connected The linkage base is provided with a number of first fixed arms extending outward, the linkage base is provided with a number of second fixed arms outward, and each of the first fixed arms respectively extends from the interval of the extension arms, and the first fixed The arms correspond to the positions of the second fixed arms up and down, and the corresponding first fixed arms and the second fixed arms are connected to a clamping arm; the characteristics are as follows: 　　 each first fixed arm extends from the fixed base in a diagonal downward direction , Each second fixed arm extends from the linkage base in an arc shape, the length of the first fixed arm is less than the length of the second fixed arm, the first fixed arm is provided with a first groove extending along its extending direction Groove, the second fixing arm is provided with a second groove extending along its extending direction, and the clamping arm is slidably disposed in the first groove and the second groove with a first protrusion and a second protrusion respectively in. The puller structure according to claim 1, wherein the first groove is recessed upward from the bottom surface of the first fixed arm, and a first long slide is opened on both sides of the first fixed arm A plurality of wavy positioning pockets along the bottom edge of the first long chute; the first protrusion is provided on both sides of the clamp arm facing the first long chute and slidably It extends through the first long chute. The puller structure according to claim 2, wherein the second groove is formed by penetrating the second fixing arm up and down, and a second long slide slot is opened on both sides of the second fixing arm; The two protrusions are disposed on both sides of the clamping arm facing the second long slide slot, and slidably extend into the second long slide slot.

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