Hand tool with replaceable sheet working element

Abstract

The utility model discloses a manual tool of replaceable lamella work piece belongs to manual tool technology, and the existing manual tool is inconvenient for replacing lamella work piece, the utility model discloses through the rear end of lamella work piece is inserted into the insertion port of handle front end and is configured locking structure, and the locking structure includes the locking piece and the unlocking piece of assembly in the front end of handle, and the locking piece is configured as axial movement, and the unlocking piece is configured as between the first position and the second position transposition, and the unlocking piece is located first position and forces the locking piece axial insertion pin hole and locks lamella work piece in handle with first elastic force, guarantees reliably firmly installs lamella work piece, overcomes first elastic force and makes the unlocking piece release locking piece when the unlocking piece transposes from first position to second position, and the locking piece exits pin hole with second elastic force axially, and replaces lamella work piece, simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of hand tool technology, specifically relating to a hand tool with replaceable thin working parts, which are particularly characterized as saw blades or cutting blades. Background Technology

[0002] Different work scenarios require different working parts, such as saw blades and cutting blades. Therefore, having a handle with spare working parts or accessories provides convenience for users. A reliable structure that facilitates easy replacement of working parts is essential. Utility Model Content

[0003] This utility model addresses the need for a spare working part or accessory with a handle, providing a manual tool with replaceable thin working parts, which allows users to easily replace thin working parts as needed, while ensuring reliable and secure installation of the thin working parts.

[0004] To achieve the above objectives, the manual tool for replacing thin sheet workpieces according to this utility model includes:

[0005] The handle has an insertion port at its front end;

[0006] A thin sheet workpiece, with a pin hole at its rear end that is inserted into the insertion port;

[0007] A locking structure includes a locking member and an unlocking member mounted on the front end of a handle. The locking member is configured to move axially, and the unlocking member is configured to switch between a first position and a second position. The unlocking member is positioned in the first position by a first elastic force, which forces the locking member to be axially inserted into the pin hole to lock the sheet workpiece to the handle. When the unlocking member is moved from the first position to the second position by overcoming the first elastic force, the unlocking member releases the locking member, and the locking member is axially withdrawn from the pin hole by a second elastic force.

[0008] Therefore, under normal conditions, the unlocking component is in the first position due to the first elastic force. The unlocking component forces the locking component to insert axially into the pin hole, locking the thin working piece to the handle and ensuring reliable and secure installation of the thin working piece. When it is necessary to replace the thin working piece, operate the unlocking component to overcome the first elastic force and move it from the first position to the second position. The unlocking component releases the locking component, and the locking component axially exits the pin hole due to the second elastic force. At this time, the thin working piece can be pulled out from the insertion port at the front end of the handle, and the rear end of another thin working piece can be inserted into the insertion port. Release the unlocking component, allowing it to return to the first position due to the first elastic force, locking the newly installed thin working piece to the handle. This method of replacing the thin working piece is simple and convenient.

[0009] Preferably, the locking and unlocking components are engaged by an inclined surface. When the unlocking component is in the first position, it presses against the locking component via the inclined surface, forcing the locking component to insert into the pin hole. When the unlocking component is in the second position, it releases the locking component via the inclined surface. This structure is simple, its action is sensitive and accurate, and it can directly and accurately feed back the action of the unlocking component to the locking component.

[0010] Preferably, the side wall of the insertion port is provided with a side hole, and the locking element is placed in the side hole, which makes the structure compact and concealed and not easy to loosen; the unlocking element is oscillatingly assembled to the front end of the handle by a pin, which is easy to operate.

[0011] Preferably, the unlocking member straddles the side wall of the insertion port with two legs, the ends of which are connected to the pin. This structure makes the unlocking member symmetrical, preventing it from deflecting when operated and ensuring even force distribution.

[0012] Preferably, when the unlocking member changes position between the first and second positions, the leg always confines the locking member within the side hole, preventing the locking member from falling out of the side hole.

[0013] Preferably, the first elastic force is provided by a first elastic element, which is a torsion spring acting on the unlocking element; the second elastic force is provided by a second elastic element, which is a helical compression spring acting on the locking element. Such a first and second elastic element have a compact size and can provide suitable elastic force.

[0014] Preferably, the two side walls of the insertion port are provided with corresponding limiting holes, and the unlocking component is equipped with a limiting rod, which passes through the limiting holes. This limits the unlocking component to swing between a first position and a second position. In other words, the first and second positions are determined by the limiting mechanism, further ensuring the cooperative linkage between the unlocking component and the locking component.

[0015] Preferably, the rear end of the sheet workpiece is provided with a positioning part. When the rear end of the sheet workpiece is inserted into the insertion port and the positioning part rests against the front end face of the insertion port, the pin hole corresponds to the locking member. Accordingly, when the sheet workpiece is inserted into the insertion port, it is convenient for the locking member to be inserted into the pin hole to lock the sheet workpiece to the handle.

[0016] Preferably, the handle includes a structural reinforcement fixedly disposed at its front end, an insertion port located on the structural reinforcement, and a locking structure assembled to the structural reinforcement. The structural reinforcement has better strength, meets the requirements for repeated insertion of thin sheet workpieces, and is durable.

[0017] Preferably, the thin working piece is a saw blade or a cutting blade.

[0018] Preferably, the handle includes an openable cover and a receiving cavity covered by the cover, in which accessories are stored. Accessories, such as spare saw blades or blades, or other sawing tools of various constructions, provide the user with more functional options when using the hand tool.

[0019] This invention inserts the rear end of a thin sheet workpiece into a mounting port at the front end of a handle and configures a locking structure. The locking structure includes a locking member and an unlocking member mounted on the front end of the handle. The locking member is configured to move axially, and the unlocking member is configured to switch between a first position and a second position. When the unlocking member is in the first position due to a first elastic force, it forces the locking member to be axially inserted into the pin hole, locking the thin sheet workpiece to the handle. When the unlocking member is moved from the first position to the second position by overcoming the first elastic force, the unlocking member releases the locking member, and the locking member is axially withdrawn from the pin hole due to a second elastic force. Therefore, under normal conditions, the unlocking member is in the first position due to the first elastic force, and the unlocking member forces the locking member to be axially inserted into the pin hole, locking the thin sheet workpiece to the handle, ensuring reliable and secure installation of the thin sheet workpiece. When it is necessary to replace the thin working part, operate the unlocking mechanism to overcome the first spring force and move it from the first position to the second position. The unlocking mechanism releases the locking mechanism, and the locking mechanism axially exits the pin hole due to the second spring force. At this time, the thin working part can be pulled out from the insertion port at the front end of the handle, and the rear end of another thin working part can be inserted into the insertion port. Release the unlocking mechanism to reset it to the first position due to the first spring force, locking the newly installed thin working part to the handle. This method of replacing thin working parts is simple and convenient. Attached Figure Description

[0020] Figure 1 This is an axonometric view of the manual tool of this utility model;

[0021] Figure 2 This is an axonometric view of the hand tool of this utility model from another perspective;

[0022] Figure 3 This is a side view of the manual tool of this utility model.

[0023] Figure 4 for Figure 3 The right view;

[0024] Figure 5 for Figure 3 AA-direction cross section;

[0025] Figure 6 for Figure 4 BB-direction cross-section;

[0026] Figure 7 for Figure 5 A schematic diagram of the unlocking component in the structure shown when it is moved to the second position;

[0027] Figure 8 for Figure 6 A schematic diagram of the unlocking component in the structure shown when it is moved to the second position;

[0028] Figure 9 for Figure 8 A schematic diagram showing the thin working piece being pulled out of the insertion port at the front end of the handle in the structure shown.

[0029] Figure 10 This is a schematic diagram of the thin sheet working part of this utility model being pulled out from the insertion port at the front end of the handle;

[0030] Figure 11 This is a schematic diagram of the handle of this utility model, including an openable cover.

[0031] Figure 12 This is a schematic diagram showing the attachment stored in the receiving cavity of the handle of this utility model;

[0032] Figure 13 This is a schematic diagram of a saw blade of this utility model sawing an object;

[0033] Figure 14 This is a schematic diagram of another saw blade of this utility model sawing an object;

[0034] Figure 15 This is a schematic diagram of a wire saw cutting an object according to the present invention;

[0035] Explanation of the labels in the diagram:

[0036] 100 Handle, 101 Structural reinforcement, 102 Insertion port, 103 Side wall, 104 Side hole, 105 Limiting hole, 106 Front end face, 107 Cover, 108 Receiving cavity;

[0037] 200 Thin sheet workpiece, 201 Pin mounting hole, 202 Positioning part;

[0038] 300 locking structure,

[0039] 310 Locking element, 311 Bevel,

[0040] 320 Unlocking component, 321 Leg, 322 Limiting rod.

[0041] 330 pin,

[0042] 341 First elastic element, 342 Second elastic element

[0043] 400 Attachments. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this utility model are intended to cover non-exclusive inclusion, such as a method or product that includes a series of technical features, not limited to those technical features explicitly listed, but also including other technical features that may be included in the method or product but not explicitly listed.

[0046] In the description of this utility model, it should be understood that the technical features defined by terms such as "first" and "second" which have a sequential concept are only for the purpose of clearly describing the defined technical features and making the defined technical features clearly distinguishable from other technical features, and do not represent that they are named in this way in actual implementation. Therefore, they should not be construed as limitations on this utility model.

[0047] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0048] Figure 1-12 A hand tool with a replaceable sheet workpiece is shown, comprising a handle 100, a sheet workpiece 200, and a locking mechanism 300.

[0049] Handle 100 is provided for the user to hold, and the front end of handle 100 is like... Figure 10 The diagram shows an insertion port 102.

[0050] The thin workpiece 200 is used to process objects, such as sawing, cutting, and slicing. Its rear end has a pin hole 201 into which it is inserted into an insertion port 102. The axis of the pin hole 201 is perpendicular to the extension surface of the thin workpiece 200. During operation, the user holds the handle to allow the thin workpiece to process the object. The thin workpiece is in the form of a thin sheet, such as a saw blade or a cutting blade.

[0051] The locking structure 300 includes a locking member 310 and an unlocking member 320 mounted on the front end of the handle 100. The locking member 310 is configured to move axially, and the axial direction is consistent with the direction of the pin hole 201, that is, the axial direction is perpendicular to the extension surface of the sheet workpiece 200. The unlocking member 320 is configured to... Figure 1-6 , Figure 11-12 The first position shown is Figure 7-10When the second position is switched as shown, the unlocking member 320, by means of the first elastic force, is in the first position and forces the locking member 310 axially into the pin hole 201 to lock the sheet workpiece to the handle. When the unlocking member 320 overcomes the first elastic force and moves from the first position to the second position, the unlocking member 320 releases the locking member 310, and the locking member 310 axially exits the pin hole 201 by means of the second elastic force. Therefore, the first elastic force is greater than the second elastic force, which is used to overcome the second elastic force under normal conditions to force the locking member axially into the pin hole to lock the sheet workpiece to the handle.

[0052] Therefore, under normal conditions, the unlocking component is in the first position due to the first elastic force. The unlocking component forces the locking component to insert axially into the pin hole, locking the thin working piece to the handle and ensuring reliable and secure installation. When it is necessary to replace the thin working piece, operate the unlocking component to overcome the first elastic force, causing it to move from the first position to the second position. The unlocking component releases the locking component, and the locking component axially exits the pin hole due to the second elastic force. At this time, the thin working piece can be pulled out from the insertion port at the front end of the handle, and the rear end of another thin working piece can be inserted into the insertion port. Releasing the unlocking component allows it to return to the first position due to the first elastic force, and overcomes the second elastic force to force the locking component axially into the pin hole, locking the newly installed thin working piece to the handle. This method of replacing the thin working piece is simple and convenient.

[0053] like Figure 5 , Figure 7 As shown, the locking member 310 and the unlocking member 320 are engaged by an inclined surface 311. This inclined surface 311 is located at the outer end of the locking member 310 and contacts the unlocking member 320. Therefore, as the unlocking member shifts, the locking member can be moved axially. In other embodiments, the inclined surface can be provided on the unlocking member, which similarly allows the locking member to move axially as the unlocking member shifts. The unlocking member 320 is as follows... Figure 1-6 , Figure 11-12 When the unlocking member 320 is in the first position, the inclined surface 311 presses against the locking member 310, forcing the locking member 310 into the pin hole 201. The unlocking member 320 then... Figure 7-10 When in the second position, the unlocking member 320 releases the locking member 310 via the inclined surface 311. This structure is simple, the action is sensitive and accurate, and it can directly and accurately feed back the action of the unlocking member to the locking member.

[0054] like Figure 5 , Figure 7 As shown, the side wall 103 of the insertion port is provided with a side hole 104, and the locking member 310 is placed in the side hole 104. The structure is compact and concealed, and it is not easy to loosen. The unlocking member 320 is oscillatingly assembled to the front end of the handle via a pin 330, which is easy to operate. Furthermore, one locking member mates with one side hole. Only one pair of mating locking members and side holes is shown in the figure. In other embodiments, two pairs of locking members and side holes can be configured.

[0055] like Figure 1-2 , Figure 4-5 , Figure 7 , Figure 10 As shown, the unlocking member 320 straddles the side wall 103 of the insertion port via two legs 321, with the ends of the legs 321 connected to pins 330. This structure makes the unlocking member symmetrical, preventing it from deflecting easily when it swings, and ensuring even force distribution. Moreover, when the unlocking member changes position between the first and second positions, the legs 321 are always located at the outer port of the side hole 104, thus confining the locking member 310 within the side hole 104 and preventing it from falling out of the side hole.

[0056] In the illustrated structure, the first elastic force is provided by the first elastic element 341, which is a torsion spring acting on the unlocking element; the second elastic force is provided by the second elastic element 342, which is a helical compression spring acting on the locking element. These first and second elastic elements have a compact volume and provide suitable elastic force. In the illustrated structure, to maintain the torsion spring, which is the first elastic element, in the desired position, the torsion spring is fitted onto the pin. To maintain the assembly relationship, both the side hole 104 and the locking element 310 are stepped, and the helical compression spring, which is the second elastic element, is fitted onto the locking element with its two ends supported on the corresponding steps.

[0057] In the illustrated structure, the two side walls 103 of the insertion port are provided with corresponding limiting holes 105, and the unlocking member 320 is equipped with a limiting rod 322, which passes through the limiting hole 105. Accordingly, the unlocking member is limited to swinging between the first position and the second position. In other words, the first position and the second position are determined by the limiting, and the cooperation and linkage between the unlocking member and the locking member are further guaranteed.

[0058] In the illustrated structure, the rear end of the sheet workpiece 200 is provided with a positioning part 202. When the rear end of the sheet workpiece is inserted into the insertion port and the positioning part 202 rests against the front end face 106 of the insertion port, the pin hole 201 corresponds to the locking member 310. Accordingly, when the sheet workpiece is inserted into the insertion port, it is convenient for the locking member to be inserted into the pin hole to lock the sheet workpiece to the handle.

[0059] In the illustrated structure, the handle 100 includes a structural reinforcement 101 fixedly disposed at its front end, an insertion port 102 disposed on the structural reinforcement 101, and a locking structure 300 assembled on the structural reinforcement 101. The structural reinforcement has better strength, meets the requirements for repeated insertion of thin sheet workpieces, and is durable.

[0060] Figure 1-14 In this embodiment, the thin working piece 200 is a saw blade, therefore the hand tool is embodied as a saw. In other embodiments, the thin working piece is a blade or other thin working piece.

[0061] Figure 11-12In the handle 100, there is an openable cover 107 and a receiving cavity 108 covered by the cover, in which an accessory 400 is stored. The accessory 400 includes, but is not limited to, spare saw blades or blades, other types of sawing tools, etc., to provide the user with more functional options when using the hand tool. Figure 13 A schematic diagram of a saw blade cutting an object is shown (in actual use, the saw blade is mounted on the handle). Figure 14 This diagram illustrates another type of saw blade sawing an object along a reference plane (in actual use, the saw blade is mounted on the shank). Figure 15 The diagram shows a wire saw cutting an object. This wire saw includes a wire blade with a handle at each end. The user holds the two handles to tension the wire blade and make a cut.

Claims

1. A hand tool with interchangeable thin workpieces, characterized in that: include: The handle (100) has an insertion port (102) at its front end. A thin sheet workpiece (200) has a pin hole (201) at its rear end and is inserted into the insertion port (102). The locking structure (300) includes a locking member (310) and an unlocking member (320) mounted on the front end of the handle. The locking member (310) is configured to move axially, and the unlocking member (320) is configured to switch between a first position and a second position. When the unlocking member (320) is in the first position by a first elastic force, it forces the locking member (310) to be axially inserted into the pin hole (201) to lock the sheet workpiece to the handle. When the unlocking member (320) is switched from the first position to the second position by overcoming the first elastic force, the unlocking member (320) releases the locking member (310), and the locking member is axially withdrawn from the pin hole by a second elastic force.

2. The hand tool according to claim 1, characterized in that: The locking member (310) and the unlocking member (320) cooperate through the inclined surface (311). When the unlocking member (320) is in the first position, the unlocking member (320) presses the locking member (310) through the inclined surface (311) to force the locking member to be inserted into the pin hole. When the unlocking member (320) is in the second position, the unlocking member releases the locking member (310) through the inclined surface (311).

3. The hand tool according to claim 1 or 2, characterized in that: it is insert-type. The side wall (103) of the opening is provided with a side hole (104), and the locking member (310) is placed in the side hole (104); the unlocking member (320) is swung and assembled to the front end of the handle by means of a pin (330).

4. The hand tool according to claim 3, characterized in that: The unlocking component (320) straddles the side wall (103) of the insertion port via two legs (321), the ends of which are connected to the pin (330).

5. The hand tool according to claim 4, characterized in that: When the unlocking member (320) is switched between the first position and the second position, the leg (321) always confines the locking member (310) within the side hole (104).

6. The hand tool according to claim 3, characterized in that: The first elastic force is provided by the first elastic element (341), which is a torsion spring acting on the unlocking member; the second elastic force is provided by the second elastic element (342), which is a helical compression spring acting on the locking member.

7. The hand tool according to claim 3, characterized in that: it is insert-type. The two side walls (103) of the opening are provided with corresponding limiting holes (105), and the unlocking component (320) is equipped with a limiting rod (322), which passes through the limiting hole (105).

8. The hand tool according to claim 1, characterized in that: The rear end of the sheet workpiece (200) is provided with a positioning part (202). When the rear end of the sheet workpiece is inserted into the insertion port and the positioning part (202) rests against the front end face (106) of the insertion port, the pin hole (201) corresponds to the locking part (310).

9. The hand tool according to claim 1, characterized in that: The handle (100) includes a structural reinforcement (101) fixedly disposed at its front end, an insertion port (102) provided on the structural reinforcement, and a locking structure (300) assembled on the structural reinforcement.

10. The hand tool according to claim 1, characterized in that: The thin workpiece (200) is a saw blade or a cutting blade.

11. The hand tool according to claim 1, characterized in that: The handle (100) includes an openable cover (107) and a receiving cavity (108) covered by the cover, in which an accessory (400) is stored.

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