Ratchet and pulley head dual-purpose wrench

Abstract

The utility model relates to a ratchet and sliding head dual-purpose wrench which comprises a ratchet head, a handle which is connected with the ratchet head in an inserted mode and can be locked and a sliding head matched with the handle, the handle is in a long round rod shape, a radial hole is formed in the portion, close to one end, of the handle in the radial direction, and a fixing pin spring and a cylindrical fixing pin are arranged in the radial hole. The side edge of the ratchet head extends to be provided with an insertion hole matched with the end of the handle, a locking hole communicated with the outside is formed in the wall, close to the bottom of the insertion hole, of the insertion hole, the end of the handle is inserted into the insertion hole, the fixing pin is matched with the locking hole, and the outer surface, corresponding to the locking hole, of the ratchet head is provided with a cavity. The handle is designed to be in a long round rod shape, can be used as a handle of the ratchet wheel head and can also be used as a sliding rod of the sliding head, and the weight is reduced when the ratchet is carried.

Description

Technical Field

[0001] The utility model relates to a tool, in particular to a ratchet sliding head dual-purpose wrench. Background Art

[0002] A wrench is a commonly used hand tool used to tighten bolts or nuts. There are basically two types of wrenches: fixed wrenches and adjustable wrenches. Fixed wrenches are generally called fixed wrenches, and the opening cannot be adjusted. One wrench can only act on the corresponding screws. Therefore, fixed wrenches have multiple specifications to meet different screw tightening needs. An adjustable wrench is the kind that can adjust the opening size within a certain range, and all screws within the range can be fixed with one wrench.

[0003] With the advancement of technology, in order to adapt to more occasions, the structure of wrenches has changed greatly, such as socket wrenches, ratchet wrenches, and sliding head wrenches. The socket wrench includes a wrench body and multiple specifications of sockets. Different sockets can adapt to different screws; the ratchet wrench can be used with the socket to achieve back and forth screwing without full rotation; the sliding head wrench includes a sliding head and a sliding rod. The sliding head can be used with the socket to adapt to screws of different specifications, and the sliding rod can adjust the operating torque relative to the sliding head. Therefore, the ratchet wrench and the sliding head wrench can meet most operations when combined with multiple sockets.

[0004] However, the handle of the ratchet wrench is designed to be non-cylindrical in order to facilitate gripping, and the slide bar is designed to be a long round rod in order to cooperate with the slider. Therefore, when carrying, the ratchet wrench and the slide bar need to be carried together, which increases the weight. At the same time, the handle of the ratchet wrench is fixed in length, but in some occasions, the space is relatively small, and the handle of fixed length is not convenient to use, which affects the use of the ratchet handle. Summary of the invention

[0005] The utility model solves the problem that the ratchet wrench and the sliding head wrench in the prior art are independent of each other, which increases the carrying weight, and provides a ratchet and sliding head dual-purpose wrench, wherein the handle of the ratchet wrench is changed and the handle is designed to be a round rod that can cooperate with the sliding head, a plug-in connection structure is adopted between the end of the handle and the ratchet head, and a locking mechanism is cooperated to realize the fixation between the handle and the ratchet head, thus saving the carrying of the sliding rod of the sliding head wrench and reducing the weight.

[0006] The utility model solves the defect that the handle of the ratchet wrench in the prior art is of fixed length and is not suitable for use in occasions with small space, and provides a ratchet sliding head dual-purpose wrench. The handle of the ratchet wrench adopts a length-variable structure, and the handle can be shortened to be used in occasions with small space.

[0007] The specific technical scheme of the utility model is: a ratchet slider dual-purpose wrench, comprising a ratchet head, a handle plugged into and locked with the ratchet head, and a slider matched with the handle, the handle is in the shape of a long round rod, a radial hole is radially arranged at a portion of the handle close to one end, a fixing pin spring and a cylindrical fixing pin are arranged in the radial hole, a plug hole matched with the end of the handle is extended from the side of the ratchet head, a locking hole connected to the outside is arranged on the plug hole wall near the bottom of the plug hole, the end of the handle is inserted into the plug hole, the fixing pin matches with the locking hole, and a concave cavity is arranged on the outer surface of the ratchet head corresponding to the locking hole.

[0008] The ratchet head and the handle can be plugged into and locked with each other, and can also be disassembled from each other. The handle cooperates with the ratchet head to form a ratchet wrench, and the handle and the ratchet head are disassembled to be used as a round rod. After the handle is disassembled, it cooperates with the sliding head to form a sliding head wrench. Therefore, the handle is designed to be in the shape of a long round rod, which can be used as a handle of the ratchet head and also as a sliding rod of the sliding head, which reduces weight when carried. In order to ensure safe operation after the handle cooperates with the ratchet head and avoid separation of the handle from the ratchet head during operation, a fixing pin spring and a cylindrical fixing pin are provided at the end of the handle, and a locking hole is provided on the socket wall of the ratchet head. After the handle is plugged into and matched with the ratchet head, the fixing pin extends into the locking hole under the action of the fixing pin spring to form a locking hole. The axial limit locking is achieved, and the fixing pin is in the shape of a column, and the top of the fixing pin is a plane, so that the fixing pin extends into the locking hole, and the fixing pin needs to be pressed radially to separate the handle from the ratchet head. If only a single external force acts axially on the handle, the handle and the ratchet head will not separate by themselves, thereby ensuring safe use; a socket is extended from the side of the ratchet head, and the socket is used for inserting the end of the handle, so that there is sufficient axial overlap between the ratchet head and the handle, and when the handle drives the ratchet head to rotate, the force distribution is more reasonable; a concave cavity is set on the surface of the ratchet head corresponding to the locking hole, that is, the surface of the socket wall, so that it is convenient to press the fixing pin radially to separate the fixing pin from the locking hole.

[0009] Preferably, the socket of the ratchet head is a circular socket, and an axial slot matching the fixing pin is provided on the inner wall of the socket, and the bottom end of the axial slot extends to the locking hole. An axial slot is provided on the inner wall of the socket, and the position of the fixing pin corresponds to the position of the axial slot, which is convenient for calibrating the position when the handle end is inserted, and for matching the fixing pin with the locking hole. The axial slot reduces the pressing height of the fixing pin when the handle is withdrawn, and the handle can be withdrawn when the fixing pin is pressed to the bottom of the cavity, which is convenient for operation.

[0010] Preferably, the concave cavity on the outer surface of the ratchet head is offset from the center of the locking hole to one side of the ratchet part, and the concave cavity and the axial slot are located on both sides of the center of the locking hole. In order to ensure the locking effect of the fixing pin, the shape of the concave cavity is limited. The concave cavity is located on one side of the center of the locking hole, opposite to the position of the axial slot relative to the locking hole, so that the locking hole can effectively limit the fixing pin when it faces the side where the axial slot is located.

[0011] Preferably, the cylindrical fixing pin is in a T shape, the end with a large diameter is in the radial hole and abuts against the fixing pin spring, and the part with a small diameter extends out of the radial hole, and the extension length of the fixing pin is greater than the wall thickness of the bottom of the concave cavity on the outer surface of the ratchet head. The fixing pin is in a T shape, and the corresponding radial hole shape is adapted to the fixing pin, which can accommodate the fixing pin, facilitate the extension and contraction of the fixing pin, and limit the fixing pin from falling out. The cooperation between the radial hole and the fixing pin can be achieved by thermal expansion and contraction, or by external pressure. The extension length of the fixing pin must be able to ensure that it overlaps with the hole wall of the locking hole, and at the same time will not extend out of the wall of the plug hole.

[0012] Preferably, the handle adopts an adjustable length structure. The adjustable handle length means that the handle length can be shortened to meet the operation needs of narrow spaces. This adjustment can be an overall telescopic structure, a multi-section mutually threaded structure, or a mutually plugged structure.

[0013] Preferably, the handle is divided into two sections, which are hinged by a pin; a convex portion is provided at the end of one section, which is located at the center of the handle, and a concave portion is provided at the end of the other section, which is located at the center of the handle, and the width of the convex portion matches the width of the concave portion, and the pin passes through the two side walls of the concave portion and the convex portion to form a hinge. The two sections of the handle are plugged in and matched with the convex portion and hinged by the pin, so that the two sections of the handle can rotate around the hinge pin, and the overall axial length can be shortened after the rotation.

[0014] Preferably, a circular concave hole is provided at the bottom center of the concave part, a circular boss matched with the circular concave hole is provided at the end of the convex part, and an elongated hole is provided on the convex part. The length direction of the elongated hole is along the axis direction of the handle, and the width of the elongated hole is matched with the outer diameter of the pin shaft; the length of the elongated hole is greater than the outer diameter of the pin shaft, and the moving length of the pin shaft in the elongated hole is greater than the height of the circular boss. When the convex part and the concave part are plugged into each other, the circular boss is inserted into the circular concave hole, which strengthens the handle and ensures that the two sections of the handle have sufficient bending resistance after being connected. The elongated hole is used for the pin shaft to pass through, and allows the pin shaft to move in the elongated hole, so that the handle section can move relative to the pin shaft. When the handle section is retracted, the circular boss separates from the circular concave hole, so that the handle can be rotated and bent around the pin shaft. Considering the operating requirements of the handle, the bending direction of the handle is perpendicular to the operating rotation direction of the handle.

[0015] Preferably, a pressing spring and a pressing block are provided in the convex part, and the pressing block contacts the outer surface of the pin shaft toward the inside of the elongated hole. The pressing block and the pressing spring cooperate with each other so that the pressing block always pushes the pin shaft toward the end of the elongated hole away from the circular protrusion, so that the two sections of the handle will not bend automatically, and an external force is required to separate the circular protrusion from the circular concave hole to achieve bending.

[0016] Preferably, an axial through hole is provided in the convex portion near the end, the clamping block and the clamping spring are located in the axial through hole, and a plug is provided at the opening of the axial through hole.

[0017] Preferably, the end of the handle that matches the ratchet head is the front end, and the other end of the handle is provided with an elastic limiting mechanism that matches a spring and a steel ball; the slider is laterally provided with a through hole that matches the handle, and the slider is provided with an elastic limiting mechanism that matches a spring and a steel ball facing the inner wall of the through hole. The slider is provided with an elastic limiting mechanism, and the handle will not slide randomly after matching with the slider.

[0018] The beneficial effects of the utility model are as follows: 1. The handle is designed to be in the shape of an elongated rod, which can be used as a handle of a ratchet head and a slide rod of a slider, and the weight is reduced when carried;

[0019] 2. A fixing pin spring and a cylindrical fixing pin are arranged at the end of the handle, and a locking hole is arranged on the socket wall of the ratchet head. After the handle and the ratchet head are plugged and matched, the fixing pin is extended into the locking hole under the action of the fixing pin spring to form an axial limit lock. The fixing pin is in a column shape, and the top of the fixing pin is a plane. In this way, the fixing pin is extended into the locking hole, and the fixing pin needs to be radially pressed to separate the handle from the ratchet head. If only a single external force acts axially on the handle, the handle and the ratchet head will not separate by themselves, ensuring safe use;

[0020] 3. A socket is extended from the side of the ratchet head, and the socket is used to insert the end of the handle, so that there is enough axial overlap between the ratchet head and the handle, and when the handle drives the ratchet head to rotate, the force distribution is more reasonable;

[0021] 4. A concave cavity is arranged on the surface of the ratchet head corresponding to the locking hole, that is, on the surface of the jack wall, so that it is convenient to press the fixing pin radially so that the fixing pin is separated from the locking hole;

[0022] 5. An axial slot is arranged on the inner wall of the jack, and the position of the fixing pin corresponds to the position of the axial slot, which is convenient for calibrating the position when the handle end is inserted, and for the fixing pin to cooperate with the locking hole. The axial slot reduces the pressing height of the fixing pin when the handle is withdrawn, and the handle can be withdrawn when the fixing pin is pressed to the bottom of the cavity, which is convenient for operation;

[0023] 6. The handle length is adjustable, which means the handle length can be shortened to meet the operating needs in narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded schematic diagram of the utility model;

[0025] Figure 2 It is a partial cross-sectional view of a ratchet head of the utility model;

[0026] Figure 3 This is a schematic diagram of a handle structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the exploded handle section of the utility model;

[0028] Figure 5 This is a schematic diagram of disassembly of a handle of the utility model;

[0029] In the figure: 1. ratchet head, 2. handle, 3. fixing pin, 4. fixing pin spring, 5. steel ball, 6. spring, 7. slider, 8. steel ball, 9. socket, 10. axial slot, 11. locking hole, 12. concave cavity, 13. convex part, 14. pin shaft, 15. long hole, 16. pressing spring, 17. pressing block, 18. concave part, 19. circular concave hole, 20. plugging, 21. circular convex column. DETAILED DESCRIPTION

[0030] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. Example

[0031] like Figure 1 As shown, a ratchet sliding head dual-purpose wrench includes a ratchet head 1, a handle 2 plugged into and locked with the ratchet head, and a sliding head 7 matched with the handle. The handle is in the shape of a long round rod, and a radial hole is radially arranged at the part of the handle near one end. A fixing pin spring 4 and a cylindrical fixing pin 3 are arranged in the radial hole. A plug hole 9 matching with the end of the handle is extended from the side of the ratchet head. The plug hole is a circular plug hole, and a locking hole 11 connected to the outside is arranged on the plug hole wall near the bottom of the plug hole. The end of the handle is inserted into the plug hole, and the fixing pin matches the locking hole. A concave cavity 12 is arranged on the surface of the ratchet head corresponding to the locking hole. The cylindrical fixing pin is in a T shape, and the end with a large diameter is in the radial hole and abuts against the fixing pin spring, and the part with a small diameter extends out of the radial hole. The extension length of the fixing pin is greater than the wall thickness of the bottom of the concave cavity on the outer surface of the ratchet head.

[0032] The slider is laterally provided with a perforation matched with the handle, and the slider is provided with an elastic limiting mechanism matched with a spring 6 and a steel ball 5 facing the inner wall of the perforation. The end of the handle matched with the ratchet head is the front end, and the other end of the handle is provided with an elastic limiting mechanism matched with a spring and a steel ball. Example

[0033] A ratchet sliding head dual-purpose wrench, such as Figure 2 and Figure 3 As shown, the inner wall of the ratchet head socket is provided with an axial slot 10 that matches the fixing pin, and the bottom end of the axial slot extends to the locking hole. The bottom of the axial slot is flush with the bottom of the cavity. The cavity is offset from the center of the locking hole to one side of the ratchet part, and the cavity and the axial slot are located on both sides of the center of the locking hole.

[0034] like Figure 3 Figure 4 As shown, the handle of this embodiment adopts a length-adjustable structure. The handle is divided into two sections, which are hinged by a pin 14. The front section is connected to the ratchet head, and the other section is the rear section. The end of the front section is provided with a rectangular convex portion 13, which is located at the center of the handle, and the end of the other section is provided with a concave portion 18, and the two sides of the concave portion are concave side walls, and the concave portion is located at the center of the handle. The width of the convex portion is adapted to the width of the concave portion, and the pin passes through the two side walls of the concave portion and the convex portion to form a hinge. A circular concave hole 19 is provided at the bottom center of the concave portion, and a circular convex column 21 adapted to the circular concave hole is provided at the end of the convex portion. A long strip hole 15 is provided on the convex portion, and the length direction of the long strip hole is along the axis direction of the handle, and the width of the long strip hole is adapted to the outer diameter of the pin shaft. The length of the long strip hole is greater than the outer diameter of the pin shaft, and the moving length of the pin shaft in the long strip hole is greater than the height of the circular convex column. An axial through hole is provided in the convex part near the end, a compression spring 16 and a compression block 17 are provided in the axial through hole, the axial through hole is circular, the compression block is cylindrical, the compression block contacts the outer surface of the pin shaft toward the inside of the long hole, and a plug 20 is provided at the opening of the axial through hole. In this embodiment, the axial direction of the pin shaft is perpendicular to the axial direction of the fixed pin, and the rotation direction of the rear handle around the pin shaft is perpendicular to the rotation direction of the ratchet head.

[0035] like Figure 5 As shown, press the top of the fixing pin so that the top of the fixing pin is flush with the bottom of the concave cavity. At this time, the top of the fixing pin is flush with the bottom of the axial slot. Pull the handle axially to separate the handle from the ratchet head.

[0036] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A ratchet sliding head dual-purpose wrench, characterized in that: The invention comprises a ratchet head (1), a handle (2) plugged into and lockable with the ratchet head, and a slider (7) matched with the handle. The handle is in the shape of a long round rod. A radial hole is radially arranged at a portion of the handle close to one end. A fixing pin spring (4) and a cylindrical fixing pin (3) are arranged in the radial hole. A plug hole matched with the end of the handle is extended from the side of the ratchet head. A locking hole (11) connected to the outside is arranged on the plug hole wall close to the bottom of the plug hole. The end of the handle is inserted into the plug hole. The fixing pin matches with the locking hole. A concave cavity (12) is arranged on the outer surface of the ratchet head corresponding to the locking hole.

2. A ratchet sliding head combination wrench according to claim 1, characterized in that: The insertion hole of the ratchet head is a circular insertion hole (9), and an axial slot (10) matching with the fixing pin is arranged on the inner wall of the insertion hole, and the bottom end of the axial slot extends to the locking hole.

3. A ratchet sliding head dual-purpose wrench according to claim 2, characterized in that: The concave cavity on the outer surface of the ratchet head is biased from the center of the locking hole to one side of the ratchet part, and the concave cavity and the axial slot are located on both sides of the center of the locking hole.

4. A ratchet sliding head combination wrench according to claim 1, 2 or 3, characterized in that: The cylindrical fixing pin is T-shaped, with the end with a larger diameter being in the radial hole and abutting against the fixing pin spring, and the part with a smaller diameter extending out of the radial hole. The extending length of the fixing pin is greater than the wall thickness of the bottom of the concave cavity on the outer surface of the ratchet head.

5. A ratchet sliding head combination wrench according to claim 1, characterized in that: The handle adopts a length-adjustable structure.

6. A ratchet sliding head combination wrench according to claim 5, characterized in that: The handle is divided into two sections, and the two sections are hinged by a pin shaft (14); a convex portion (13) is provided at the end of one section, and the convex portion is located at the center of the handle; a concave portion (18) is provided at the end of the other section, and the concave portion is located at the center of the handle; the width of the convex portion matches the width of the concave portion, and the pin shaft passes through the two side walls of the concave portion and forms a hinge with the convex portion.

7. A ratchet sliding head combination wrench according to claim 6, characterized in that: A circular concave hole (19) is arranged at the center of the bottom of the concave portion, a circular convex column (21) matching the circular concave hole is arranged at the end of the convex portion, and a long hole (15) is arranged on the convex portion, the length direction of the long hole is along the axis direction of the handle, and the width of the long hole is matched with the outer diameter of the pin shaft; the length of the long hole is greater than the outer diameter of the pin shaft, and the moving length of the pin shaft in the long hole is greater than the height of the circular convex column.

8. A ratchet sliding head combination wrench according to claim 7, characterized in that: A pressing spring (16) and a pressing block (17) are arranged in the convex portion, and the pressing block faces the inside of the elongated hole and contacts the outer surface of the pin shaft.

9. A ratchet sliding head combination wrench according to claim 8, characterized in that: An axial through hole is arranged in the convex portion near the end, the pressing block and the pressing spring are located in the axial through hole, and a plug (20) is arranged at the opening of the axial through hole.

10. A ratchet sliding head combination wrench according to claim 1 or 5 or 6 or 7 or 8 or 9, characterized in that: The end of the handle that cooperates with the ratchet head is the front end, and the other end of the handle is provided with an elastic limiting mechanism cooperated with a spring and a steel ball; the slider is laterally provided with a through hole that cooperates with the handle, and the slider is provided with an elastic limiting mechanism cooperated with a spring and a steel ball facing the inner wall of the through hole.

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