Multifunctional wrench

Abstract

The utility model discloses a multifunctional wrench which comprises a wrench body and at least one replacement head, at least one end of the wrench body is provided with a mounting hole capable of containing the replacement head, and a circumferential positioning structure and an axial positioning structure are arranged between the mounting hole and the replacement head. A stop structure is arranged on the side, away from the construction operation face of the wrench body, of the mounting hole, and the top end of the replacement head abuts against the stop structure. According to the scheme, the circumferential positioning structure and the axial positioning structure are matched to be used for limiting installation of the replacement head, it is guaranteed that the replacement head can be installed in the installation hole, the stop structure serves as a limiting face of the axial positioning structure, the replacement head can be reversely disengaged during force application operation, and the scheme has the advantages of being easy and convenient to replace, convenient to carry and the like.

Description

Technical Field

[0001] The utility model relates to a wrench, in particular to a multifunctional wrench. Background Art

[0002] Wrenches are common tools, widely used in all aspects of production due to their flexibility. Currently, one wrench corresponds to one specification, and in complex work environments, multiple tools are often required, making them inconvenient to carry and taking up a lot of space. For example, a jack is a common tool for car repairs. During repairs, a jack is used to support equipment or a car. A jack wrench is used to raise the jack, and then tools such as wrenches and sockets are used to repair the equipment or car. This requires carrying multiple tools to meet these needs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multifunctional wrench which is easy to use, occupies little space and can be used in various scenarios.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a multifunctional wrench, comprising a wrench body and at least one replacement head, at least one end of the wrench body is provided with a mounting hole for accommodating the replacement head, a circumferential positioning structure and an axial positioning structure are provided between the mounting hole and the replacement head, a stop structure is provided on the side of the mounting hole away from the construction operation surface of the wrench body, and the top end of the replacement head abuts against the stop structure.

[0005] As a preferred technical solution, the stop structure is a stop plate, and the stop plate is arranged on a side of the installation hole away from the construction operation surface.

[0006] As a preferred technical solution, the mounting hole is a polygonal hole, the replacement head is a polygonal head, and the polygonal head cooperates with the polygonal hole to form the circumferential positioning structure.

[0007] As an optimal technical solution, the axial positioning structure includes a positioning ball installed on the inner wall of the mounting hole, and the outer wall of the replacement head is provided with a ball matching groove engaged with the positioning ball. The positioning ball is telescopically connected to the mounting hole through an elastic member and is movably installed in the mounting hole.

[0008] As a preferred technical solution, a guiding bevel is provided at one end of the replacement head inserted into the mounting hole, or a guiding bevel is provided at one end of the mounting hole close to the construction operation surface of the wrench body.

[0009] As a preferred technical solution, the replacement head includes a connecting portion, and the connecting portion is provided with a cross hole, a plum blossom hole, a hexagonal hole or a straight hole.

[0010] As a preferred technical solution, the replacement head includes a connecting portion, and a bit mounting groove is provided at the bottom end of the connecting portion.

[0011] As a preferred technical solution, the replacement head includes a connecting portion, and a sleeve square head is provided at the bottom end of the connecting portion.

[0012] As a preferred technical solution, a ratchet disc is installed at one end of the wrench body, and the mounting hole is provided in the ratchet disc.

[0013] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: the circumferential positioning structure cooperates with the axial positioning structure to limit the installation of the replacement head, ensuring that the replacement head can be installed in the installation hole; in order to ensure the convenient operation of the wrench, a stop structure is provided on the side of the installation hole away from the construction operation surface, so that the replacement head can only be inserted into the installation hole from the construction operation surface side of the wrench body, realizing the one-way installation and one-way operation of the replacement head, and at the same time, the stop structure also serves as the limiting surface of the axial positioning structure, ensuring the limiting accuracy of the axial positioning structure; during operation, the replacement head contacts the object to be constructed, and due to the operating habits, the human hand will apply force in the direction of the object to be constructed. At this time, the stop structure will block the replacement head to prevent the replacement head from detaching, ensuring the safety of the operation and facilitating the human hand to apply force for operation. The replacement head of this solution is easy to replace, easy to carry, and takes up little space, which can meet the needs of use in various scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 This is an enlarged schematic diagram of the local structure of an embodiment of the utility model;

[0017] Figure 3 It is a structural cross-sectional view of an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the installation of an embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of a cross-hole replacement head according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of a plum blossom hole replacement head according to an embodiment of the present utility model;

[0021] Figure 7 This is a schematic diagram of a replacement head for a screwdriver bit according to an embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of a sleeve replacement head according to an embodiment of the present utility model;

[0023] In the figure: 1-wrench body; 2-replacement head; 21-connecting part; 22-cross hole; 23-plum blossom hole; 24-bit mounting slot; 25-square head of socket; 3-mounting hole; 4-locating ball; 5-ball matching groove; 6-spring receiving hole; 7-spring; 8-mounting plate; 9-stop plate; 10-ratchet turntable; 11-construction operation surface. DETAILED DESCRIPTION

[0024] The present invention is further described below with reference to the accompanying drawings and examples. In the detailed description that follows, certain exemplary embodiments of the present invention are described by way of illustration only. It goes without saying that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0025] like Figures 1 to 4 As shown, a multifunctional wrench includes a wrench body 1 and at least one replacement head 2. One end of the wrench body 1 is a handle, and the other end of the wrench body 1 is provided with a mounting hole 3 that can accommodate the replacement head 2. A circumferential positioning structure and an axial positioning structure are provided between the mounting hole 3 and the replacement head 2. A stop structure is provided on the side of the mounting hole 3 away from the construction operation surface 11 of the wrench body 1, and the top end of the replacement head 2 abuts against the stop structure. Of course, both ends of the wrench body can be provided with mounting holes 3.

[0026] The circumferential positioning structure cooperates with the axial positioning structure to limit the installation of the replacement head 2, ensuring that the replacement head 2 can be installed in the installation hole 3; in order to ensure the convenience of wrench operation, a stop structure is provided on the side of the installation hole 3 away from the construction operation surface 11, so that the replacement head 2 can only be inserted into the installation hole 3 from the side of the construction operation surface 11 of the wrench body 1, realizing the one-way installation and one-way operation of the replacement head 2, and at the same time, the stop structure also serves as the limiting surface of the axial positioning structure to ensure the limiting accuracy of the axial positioning structure; when working, the replacement head 2 contacts the object to be constructed. Due to operating habits, the human hand will apply force in the direction of the object to be constructed. At this time, the stop structure will block the replacement head 2 to prevent the replacement head 2 from detaching, ensuring the safety of operation and facilitating human hand force to operate.

[0027] The circumferential positioning structure is used to prevent the replacement head 2 from rotating circumferentially. The mounting hole 3 is a polygonal hole, and the replacement head 2 is a polygonal head. The polygonal head cooperates with the polygonal hole to form the circumferential positioning structure. The polygonal head and the polygonal hole are sized to fit together and are fitted together by insertion.

[0028] The axial positioning structure is used to ensure the axial positioning of the replacement head 2 after installation, and to prevent the replacement head 2 from detaching. The axial positioning structure includes a positioning ball 4 installed on the inner wall of the mounting hole 3. The outer wall of the replacement head 2 is provided with a ball matching groove 5 that is engaged with the positioning ball 4. The positioning ball 4 is telescopically connected to the mounting hole 3 by an elastic member. There can be multiple positioning balls 4 evenly distributed on the inner wall of the mounting hole 3, and there can be multiple corresponding ball matching grooves 5 evenly distributed on the outer wall of the replacement head 2. When the replacement head 2 rests on the stop structure, the positioning ball 4 is just stuck into the ball matching groove 5. The setting of the stop structure can help the positioning ball 4 to accurately enter the ball matching groove 5. See the effect diagram of the replacement head 2 after installation. Figure 4 .

[0029] The elastic member includes a spring receiving hole 6 provided on the inner wall surface of the mounting hole 3. A spring 7 is installed in the spring receiving hole 6. The spring 7 supports the positioning ball 4 outward. The positioning ball 4 is fixed in the spring receiving hole 6 by a mounting plate 8 to ensure that the positioning ball 4 does not fall out. At least 1 / 3 of the positioning ball 4 is exposed outside the mounting plate 8 for engagement with the ball matching groove 5. During installation, the outer wall of the replacement head 2 slides along the mounting hole 3, squeezing the positioning ball 4 back. When the ball matching groove 5 is positioned to correspond, the positioning ball 4 extends and snaps into the ball matching groove 5, limiting and fixing the replacement head 2 in the mounting hole 3. When the replacement head 2 is removed by applying reverse force, the positioning ball 4 can be squeezed back without affecting the removal of the replacement head 2.

[0030] The stop structure is provided on the side of the mounting hole 3 away from the construction operation surface 11, but it cannot completely block the side of the mounting hole 3 away from the construction operation surface 11. It is necessary to reserve a space for the fingers to press and remove the replacement head 2. The stop structure is a stop plate 9, which is provided on the side of the mounting hole 3 away from the construction operation surface 11, that is, Figure 4The stop plate 9 is provided on the inner wall of the mounting hole 3. The stop plate 9 can be provided on the inner wall of the mounting hole 3. However, the multiple stop plates 9 cannot completely block the side of the mounting hole 3 away from the construction operation surface 11. A space should be reserved above the mounting hole 3 for pressing the top of the replacement head 2 with a finger. If it is completely blocked, it will be difficult to remove the replacement head 2. During removal, the replacement head 2 can be pressed downward by hand from the top of the mounting hole 3 (away from the construction operation surface 11) to squeeze the positioning ball 4 so that the replacement head 2 is separated from the mounting hole 3.

[0031] The depth of the replacement head 2 is greater than or equal to the depth of the mounting hole 3 , ensuring that after the replacement head 2 is located in the mounting hole 3 , the contact surface between the replacement head 2 and the object to be constructed is not lower than the outer surface of the wrench body 1 .

[0032] In order to facilitate the operation of the wrench, the handle is tilted backward and upward, that is, the tail end of the wrench body 1 is away from the construction operation surface 11 at the head end, which is convenient for the construction operation surface 11 to contact the object to be constructed. This backward tilt of the handle is better used in conjunction with the stop structure.

[0033] The end of the replacement head 2 inserted into the mounting hole 3 is provided with a guide bevel, which facilitates the replacement head 2 to quickly enter the mounting hole 3. Of course, a guide bevel can also be provided at the end of the mounting hole 3 close to the construction operation surface 11 of the wrench body 1 to facilitate the replacement head 2 to quickly enter the mounting hole 3.

[0034] The structure of the replacement head 2 can be formed in a variety of different specifications and functions. In this embodiment, the replacement head 2 includes a connecting portion 21, which is used to be installed in the installation hole 3. The connecting portion 21 is provided with a cross hole 22 to form a cross hole 22 type replacement head 2. Figure 5 .

[0035] Another preferred embodiment is that a plum blossom hole 23 is provided on the connecting portion 21 to form a plum blossom hole 23 type replacement head 2, see Figure 6 .

[0036] In another preferred embodiment, the connecting portion 21 may be further provided with other through holes such as hexagonal holes or straight holes to form other types of replacement heads 2 .

[0037] Another preferred solution is not limited to the through hole. A screwdriver bit mounting groove 24 can be provided at the bottom end of the connecting portion 21. The screwdriver bit mounting groove 24 can be matched with a screwdriver bit to serve as a screwdriver bit mounting replacement head 2. Figure 7 .

[0038] Another preferred solution is not limited to the opening, and a sleeve square head 25 can be provided at the bottom end of the connecting portion 21, which can be used in conjunction with the sleeve to replace the head 2 as a sleeve. Figure 8 .

[0039] In this embodiment, the wrench can be an ordinary wrench, and of course it can also be a ratchet wrench. The ratchet disk 10 is connected to the wrench body 1 through a ratchet structure to achieve unidirectional rotation. The forward and reverse directions of rotation are changed by the reversing block. The structure is basically the same as the ratchet wrench in the prior art and will not be repeated here. In this solution, the mounting hole 3 can be set at the center of the ratchet disk 10. At this time, the ratchet wrench is a multifunctional ratchet wrench with a replaceable replacement head 2.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional wrench, comprising a wrench body and at least one replacement head, characterized in that: At least one end of the wrench body is provided with a mounting hole for accommodating the replacement head, a circumferential positioning structure and an axial positioning structure are provided between the mounting hole and the replacement head, and a stop structure is provided on the side of the mounting hole away from the construction operation surface of the wrench body, and the top end of the replacement head abuts against the stop structure.

2. A multifunctional wrench according to claim 1, characterized in that: The stopping structure is a stopping plate, and the stopping plate is arranged on a side of the mounting hole away from the construction operation surface.

3. The multifunctional wrench according to claim 1, characterized in that: The mounting hole is a polygonal hole, the replacement head is a polygonal head, and the polygonal head cooperates with the polygonal hole to form the circumferential positioning structure.

4. The multifunctional wrench according to claim 1, characterized in that: The axial positioning structure includes a positioning ball installed on the inner wall of the mounting hole. The outer wall of the replacement head is provided with a ball matching groove engaged with the positioning ball. The positioning ball is telescopically connected to the mounting hole through an elastic member and is movably installed in the mounting hole.

5. The multifunctional wrench according to claim 1, characterized in that: The end of the replacement head inserted into the mounting hole is provided with a guiding inclined surface, or the end of the mounting hole close to the construction operation surface of the wrench body is provided with a guiding inclined surface.

6. The multifunctional wrench according to claim 1, characterized in that: The replacement head comprises a connecting portion, on which a cross hole, a plum blossom hole, a hexagonal hole or a straight hole is provided.

7. The multifunctional wrench according to claim 1, characterized in that: The replacement head includes a connecting portion, and a bit mounting groove is provided at the bottom end of the connecting portion.

8. The multifunctional wrench according to claim 1, characterized in that: The replacement head comprises a connecting portion, and a sleeve square head is provided at the bottom end of the connecting portion.

9. The multifunctional wrench according to claim 1, characterized in that: A ratchet disc is installed at one end of the wrench body, and the mounting hole is arranged in the ratchet disc.

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