Chuck of reciprocating saw and reciprocating saw

Abstract

In order to solve the problem that the clamping effect of an existing reciprocating saw on a saw blade is poor, the utility model provides a chuck of a reciprocating saw and the reciprocating saw, the chuck comprises a clamping structure used for clamping the saw blade, and the clamping structure comprises a clamping piece, a rotating sleeve and a positioning piece; wherein the whole clamping piece is cylindrical, and an opening for inserting a saw blade is formed in the middle of the clamping piece; the opening part of the clamping piece is also provided with a mouth-shaped structure which protrudes outwards; the rotating sleeve is rotationally arranged on the outer side of the clamping piece; the side face of the clamping piece is further provided with a positioning hole penetrating into an opening in the clamping piece, and a positioning piece is arranged in the positioning hole. One side of the positioning piece extends into the positioning hole, and the other side of the positioning piece is located on the outer side of the clamping piece and makes contact with the inner wall of the rotating sleeve. An arc-shaped surface protruding towards the inner side of the rotating sleeve is arranged in the rotating sleeve, and the arc-shaped surface corresponds to the positioning piece; the saw blade can be better clamped, and the saw blade can be effectively prevented from being broken.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting equipment, in particular to a chuck of a reciprocating saw and the reciprocating saw. Background Art

[0002] A reciprocating saw is a tool used to cut materials such as wood, metal, and nonferrous metal. The saw blade is clamped by the chuck of the reciprocating saw, and the saw blade follows the reciprocating movement of the chuck to achieve the sawing of the object. The chuck of the reciprocating saw mainly adopts a clamping structure, such as the content shown in the patent with the authorization announcement number CN220216950U. However, in the existing reciprocating saw structure, since the end of the chuck is usually set as a plane, the clamping force of the chuck on the saw blade is limited, and the saw blade is easy to break. Therefore, a reciprocating saw chuck that can effectively clamp the saw blade is needed. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provide a chuck of a reciprocating saw and a reciprocating saw.

[0004] In order to solve the above problems, the utility model adopts the following solutions:

[0005] A chuck of a reciprocating saw comprises a clamping structure for clamping a saw blade, the clamping structure comprising a clamping member, a rotating sleeve and a positioning member; the clamping member is cylindrical as a whole, and an opening for inserting the saw blade is provided in the middle portion of the clamping member; a mouth-shaped structure protruding outward is also provided at the opening portion of the clamping member; the rotating sleeve is rotatably arranged on the outside of the clamping member; a positioning hole penetrating into the opening of the clamping member is also provided on the side of the clamping member, and a positioning member is provided in the positioning hole; one side of the positioning member extends into the positioning hole, and the other side of the positioning member is located on the outside of the clamping member and contacts with the inner wall of the rotating sleeve; an arcuate surface protruding toward the inner side of the rotating sleeve is provided inside the rotating sleeve, and the arcuate surface corresponds to the positioning member.

[0006] Furthermore, the mouth-shaped structure is a protruding frustum.

[0007] Furthermore, both sides of the arc-shaped surface smoothly transition to the inner wall of the rotating sleeve, and the thickness of the middle portion of the arc-shaped surface is thicker than the edge portions on both sides thereof.

[0008] Furthermore, one end of the positioning member extending into the clamping member is configured as a pointed tip.

[0009] Furthermore, a recessed structure matching the pointed end of the positioning member is provided at the bottom of the positioning hole of the clamping member.

[0010] Furthermore, a spring is provided between the positioning member and the clamping member.

[0011] Furthermore, one end of the positioning member located outside the clamping member is configured as a mushroom head; one end of the spring abuts against the mushroom head, and the other end contacts the clamping member.

[0012] Furthermore, the positioning hole of the clamping member is also provided with a recessed hole for embedding the spring.

[0013] Furthermore, a clamping sleeve is provided on the outer side of the clamping member, and the clamping sleeve is located between the rotating sleeve and the clamping member; the clamping sleeve is fixedly connected to the clamping member.

[0014] A reciprocating saw comprises the above-mentioned chuck.

[0015] The beneficial effects of the utility model are:

[0016] By setting the end of the clamping member to be a protruding mouth-shaped structure, on the one hand, the contact area with the saw blade is increased to better clamp the saw blade, and on the other hand, the saw blade can be effectively prevented from breaking;

[0017] By providing a raised arc surface on the inner side of the rotating sleeve, the positioning piece can be pressed into the positioning hole or released when the rotating sleeve rotates;

[0018] The saw blade is clamped and fixed by arranging the positioning piece to cooperate with the positioning hole on the clamping piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the reciprocating saw of Example 1;

[0020] Figure 2 Schematic diagram of the chuck inside the reciprocating saw of Example 1

[0021] Figure 3 is a schematic diagram of a chuck of Example 1;

[0022] Figure 4 It is an exploded view of the chuck of Example 1;

[0023] Figure 5 A top view of the chuck of Example 1;

[0024] Figure 6 for Figure 5 AA cross-sectional diagram of ;

[0025] Figure 7 This is a schematic diagram of the rotating sleeve of Example 1.

[0026] Description of the symbols in the accompanying drawings: clamping member 1, mouth-shaped structure 11, opening 12, positioning hole 13, rotating sleeve 2, arc surface 21, positioning member 3, spring 31, mushroom head 32, clamping sleeve 4, torsion spring 41. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the figures only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0029] Embodiment 1:

[0030] like Figures 1 to 7 As shown, a chuck of a reciprocating saw includes a clamping structure for clamping a saw blade, the clamping structure includes a clamping member 1, a rotating sleeve 2 and a positioning member 3; wherein the clamping member 1 is cylindrical as a whole, and an opening 12 for inserting a saw blade is provided in the middle of the clamping member 1; a mouth-shaped structure 11 protruding outward is also provided at the opening 12 of the clamping member 1; the rotating sleeve 2 is rotatably arranged on the outside of the clamping member 1; a positioning hole 13 penetrating into the opening 12 inside the clamping member 1 is also provided on the side of the clamping member 1, and the positioning member 3 is arranged in the positioning hole 13; the positioning member 3 One side extends into the positioning hole 13, and the positioning piece 3 corresponds to the circular hole on the saw blade, so that the end of the positioning piece 3 extending into the positioning hole 13 is snapped into the circular hole on the saw blade to prevent the saw blade from slipping out of the opening 12; the other side of the positioning piece 3 is located on the outside of the clamping piece 1 and contacts the inner wall of the rotating sleeve 2; the interior of the rotating sleeve 2 is provided with an arc surface 21 protruding toward the inner side of the rotating sleeve 2, and the arc surface 21 corresponds to the positioning piece 3; when the rotating sleeve 2 is rotated, the arc surface 21 presses the positioning piece 3, and presses the positioning piece 3 into the positioning hole 13, thereby realizing the cooperation between the positioning piece 3 and the saw blade.

[0031] The mouth-shaped structure 11 is a protruding frustum; by setting the frustum to bulge outward, the clamping contact surface with the saw blade is increased. In addition, since the contact between the saw blade and the end of the mouth-shaped structure 11 is V-shaped, it is less likely to break the saw blade than the existing chuck with a flat end.

[0032] The two sides of the arc surface 21 smoothly transition with the inner wall of the rotating sleeve 2, and the thickness of the middle part of the arc surface 21 is thicker than the edge parts on both sides thereof, so that when the rotating sleeve 2 is rotated, the positioning member 3 can be smoothly pressed down.

[0033] The end of the positioning member 3 extending into the clamping member 1 is configured as a pointed tip; the bottom of the positioning hole 13 of the clamping member 1 is configured as a recessed structure matching the pointed tip of the positioning member 3. A spring 31 is provided between the positioning member 3 and the clamping member 1; the end of the positioning member 3 located outside the clamping member 1 is configured as a mushroom head 32; one end of the spring 31 abuts against the mushroom head 32, and the other end contacts the clamping member 1. The positioning hole 13 of the clamping member 1 is also configured as a concave hole for embedding the spring 31, and the concave hole is coaxial with the positioning hole 13.

[0034] A clamping sleeve 4 is also provided on the outside of the clamping member 1, and the clamping sleeve 4 is located between the rotating sleeve 2 and the clamping member 1; the clamping sleeve 4 is fixedly connected to the clamping member 1, and the clamping sleeve 4 is used to limit the opening 12 on the clamping member 1 from being too large, and can form a limit on both sides of the opening 12 to prevent the saw blade from escaping from the clamping member 1 from both sides of the opening 12. In this example, a torsion spring 41 is provided between the clamping sleeve 4 and the rotating sleeve 2, so that the rotating sleeve 2 can maintain a specific state under normal conditions to achieve pressing in or releasing the positioning member 3.

[0035] A reciprocating saw comprises the above-mentioned chuck.

[0036] During the implementation process, by setting the end of the clamping member 1 to be a protruding mouth-shaped structure 11, on the one hand, the contact area with the saw blade is increased and the saw blade is better clamped, and on the other hand, it can effectively prevent the saw blade from breaking; by setting a raised arc surface 21 on the inner side of the rotating sleeve 2, the positioning member 3 can be pressed into the positioning hole 13 or released when the rotating sleeve 2 rotates; by setting the positioning member 3 to cooperate with the positioning hole 13 on the clamping member 1, the saw blade can be clamped and fixed.

[0037] The above description is only a specific example of the utility model and does not constitute any limitation to the utility model. Obviously, for professionals in this field, after understanding the content and principle of the utility model, it is possible to make various modifications and changes in form and details without departing from the principle and structure of the utility model, but these modifications and changes based on the idea of ​​the utility model are still within the scope of protection of the claims of the utility model.

Claims

1. A chuck for a reciprocating saw, comprising a clamping structure for clamping a saw blade, characterized in that: The clamping structure comprises a clamping member (1), a rotating sleeve (2) and a positioning member (3); wherein the clamping member (1) is cylindrical in shape as a whole, and an opening (12) for inserting a saw blade is provided in the middle of the clamping member (1); a mouth-shaped structure (11) protruding outward is also provided at the opening (12) of the clamping member (1); the rotating sleeve (2) is rotatably arranged on the outside of the clamping member (1); a positioning hole (13) penetrating into the opening (12) inside the clamping member (1) is also provided on the side of the clamping member (1), and the positioning member (3) is arranged in the positioning hole (13); one side of the positioning member (3) extends into the positioning hole (13), and the other side of the positioning member (3) is located on the outside of the clamping member (1) and contacts the inner wall of the rotating sleeve (2); an arc surface (21) protruding toward the inner side of the rotating sleeve (2) is provided inside the rotating sleeve (2), and the arc surface (21) corresponds to the positioning member (3).

2. A chuck for a reciprocating saw according to claim 1, characterized in that: The mouth-shaped structure (11) is a protruding frustum.

3. A chuck for a reciprocating saw according to claim 1, characterized in that: The two sides of the arc-shaped surface (21) smoothly transition to the inner wall of the rotating sleeve (2), and the thickness of the middle part of the arc-shaped surface (21) is thicker than the edge parts on both sides thereof.

4. A chuck for a reciprocating saw according to claim 1, characterized in that: One end of the positioning member (3) extending into the clamping member (1) is configured as a pointed tip.

5. A chuck for a reciprocating saw according to claim 4, characterized in that: The bottom of the positioning hole (13) of the clamping member (1) is provided with a recessed structure matching the pointed end of the positioning member (3).

6. A chuck for a reciprocating saw according to claim 1, characterized in that: A spring (31) is provided between the positioning member (3) and the clamping member (1).

7. A chuck for a reciprocating saw according to claim 6, characterized in that: One end of the positioning member (3) located outside the clamping member (1) is configured as a mushroom head (32); one end of the spring (31) abuts against the mushroom head (32), and the other end contacts the clamping member (1).

8. A chuck for a reciprocating saw according to claim 7, characterized in that: The positioning hole (13) of the clamping member (1) is also provided with a recessed hole for embedding the spring (31).

9. The chuck of a reciprocating saw according to claim 1, characterized in that: A clamping sleeve (4) is also provided on the outside of the clamping member (1), and the clamping sleeve (4) is located between the rotating sleeve (2) and the clamping member (1); the clamping sleeve (4) is fixedly connected to the clamping member (1).

10. A reciprocating saw, characterized in that: A chuck comprising the chuck according to any one of claims 1 to 9.

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