Detachable folding tuning wrench

Abstract

The utility model discloses a detachable folding tuning wrench and relates to the technical field of manual tools. Comprising a ratchet head and a handle connected to the tail end of the ratchet head, the ratchet head comprises a head shell, the ratchet head and a switching assembly matched with the ratchet head are rotationally installed in the head shell, the switching assembly is used for switching the rotating direction of the ratchet head, and the ratchet head coaxially penetrates through a pressing rod. The pressing rod and the ratchet head are in axial sliding fit and circumferential positioning fit, the upper end of the pressing rod upwards protrudes out of the ratchet head, the lower end of the pressing rod downwards extends into the sleeve connector, a round hole is formed in the side wall of the sleeve connector, a positioning ball is arranged in the round hole in a matched mode, and the positioning ball is movably arranged in the round hole in the radial direction. The caliber of an outer port of the circular hole is smaller than the diameter of the positioning ball, and an arc-shaped groove matched with the positioning ball is formed in the pressing rod. According to the utility model, the axial force for disassembling and assembling the sleeve is greatly reduced, and the service life of the wrench is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of manual tools, in particular to a detachable and foldable tuning wrench. Background Art

[0002] A wrench is a hand tool commonly used in daily life, mainly used for installing workpieces (e.g., bolts, screws). The ring spanner and ratchet spanner are two commonly used spanners.

[0003] Publication number CN219380508U discloses a ratchet wrench and hand tool assembly, including a wrench body having a receiving cavity and at least one opening, a ratchet head installed in the receiving cavity, and a switching assembly for switching the rotation direction of the ratchet. The ratchet wrench is an integrated structure with a large size. It is used for tuning the guzheng and is inconvenient to carry.

[0004] CN115026751A discloses a ratchet wrench. As can be seen from the figure, the sleeve joint and the sleeve are connected in a replaceable manner by means of a spring and a positioning ball arranged in the sleeve joint. When the sleeve is disassembled, it is necessary to overcome the spring pressure and push the positioning ball inward to achieve the displacement of the radial position of the positioning ball. Therefore, during the process of disassembling and assembling the sleeve, the ratchet is subjected to a large axial force. Since the axial force cannot be completely coaxial with the ratchet axis, the ratchet is prone to shaking in the radial direction, which increases the wear of the connection between the ratchet and the housing and affects the service life. Utility Model Content

[0005] The utility model aims to provide a detachable and foldable tuning wrench, which can effectively solve the problems in the background technology.

[0006] The technical scheme for achieving the above-mentioned purpose is: a detachable foldable tuning wrench, comprising a ratchet head and a handle connected to the tail end of the ratchet head, the ratchet head comprising a head shell, a ratchet head and a switching assembly cooperating with the ratchet head rotatably mounted in the head shell, the switching assembly being used to switch the rotation direction of the ratchet head, the ratchet head comprising a ratchet body and a sleeve joint extending axially from the ratchet body and extending downwardly out of the head shell, a sleeve being replaceably sleeved on the sleeve joint, a sleeve hole sleeved with the sleeve joint being provided at the top center position of the sleeve, an arc-shaped groove for locking is provided on the inner side wall of the sleeve hole;

[0007] The invention is characterized in that: a pressure rod is coaxially passed through the ratchet head, the pressure rod and the ratchet head are axially slidably matched and circumferentially positioned, the upper end of the pressure rod protrudes upward from the ratchet head, and the lower end of the pressure rod extends downward into the sleeve joint, a circular hole is provided on the side wall of the sleeve joint, a positioning ball is matched in the circular hole, the positioning ball is radially movably arranged in the circular hole, the diameter of the outer port of the circular hole is smaller than the diameter of the positioning ball, and the pressure rod is provided with an arc groove matched with the positioning ball;

[0008] The pressure rod drives the arc groove on the pressure rod to connect or stagger with the circular hole on the sleeve joint through axial displacement. A spring that pushes the pressure rod to return upward is passed through the pressure rod between the pressure rod and the ratchet head. When the spring is in its original length state, the arc groove on the pressure rod is staggered with the circular hole on the sleeve joint. The arc outer wall of the pressure rod pushes the positioning ball to protrude from the outer wall of the sleeve joint and locks with the arc groove on the inner side of the sleeve. When the spring is in a downward compressed state, it drives the arc groove on the pressure rod to align with the circular hole on the sleeve joint. At this time, the locking ball is driven to retract into the circular hole during the insertion and removal of the sleeve.

[0009] Furthermore, a circular hole coaxially arranged with the ratchet head is provided at the top of the head shell, and a limiting ring fixed to the ratchet body is rotatably provided in the circular hole. The upper end of the pressure rod protrudes upward from the limiting ring and slides with the limiting ring. An annular flange is provided on the upper part of the pressure rod in the head shell, and a spring pushes the annular flange upward to fit on the limiting ring. An annular limiting seat is provided at the top center of the ratchet head, which cooperates with the annular flange on the pressure rod to limit the downward displacement position of the pressure rod.

[0010] Furthermore, the tail end of the ratchet head is connected to a hinge seat, and hinge grooves are arranged on both sides of the tail end of the hinge seat. The hinge grooves are rotatably connected to handles through connecting rods. The connecting rods are tightly rotated with the hinge grooves of the hinge seat and the corresponding handles, so that the handles can be folded and retracted to both sides of the ratchet head.

[0011] Furthermore, the lower end of the head shell is an opening, and the lower end opening of the head shell is detachably connected to an end cover by bolts.

[0012] The beneficial effects of the utility model are as follows: 1) the handle of the ratchet wrench of the utility model adopts a foldable structure, which reduces the volume and is easy to carry; 2) the utility model transfers the spring in the sleeve joint in the prior art to between the pressure rod and the ratchet. When the sleeve is disassembled or assembled, the pressure rod is pressed to drive the arc groove on the pressure rod to align with the circular hole on the sleeve joint. The sleeve can be disassembled or assembled without overcoming the pressure of the spring, thereby greatly reducing the axial force of the sleeve disassembly and assembly and extending the service life of the wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the ratchet head;

[0017] Figure 5 It is the state diagram of the positioning ball locking sleeve;

[0018] Figure 6 This is a state diagram of the positioning ball being separated from the locking sleeve;

[0019] Figure 7 It is a schematic diagram of the folding state of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1-7 As shown, the utility model includes a ratchet head 1 and a handle 11 connected to the tail end of the ratchet head 1. The ratchet head 1 includes a head shell 1.1. The head shell 1.1 is provided with a mounting cavity with an opening at the lower end. The lower end opening of the head shell 1.1 is detachably connected with an end cover 1.2 by bolts. A ratchet head 3 and a switching assembly 2 cooperating with the ratchet head 3 are rotatably installed in the mounting cavity. The switching assembly 2 is used to convert the rotation direction of the ratchet head 3. The ratchet head 3 includes a ratchet body 3.1 and a sleeve joint 3.2 extending axially from the ratchet body 3.1 and extending downwardly out of the head shell 1.1. The cross-section of the sleeve joint 3.2 is square. A sleeve 4 is replaceably sleeved on the sleeve joint 3.2. A sleeve hole 4.1 sleeved with the sleeve joint 3.2 is provided at the top center of the sleeve 4.

[0021] The top of the head shell 1.1 is provided with a circular hole 1.11 coaxially arranged with the ratchet head 2, and a limit ring 5 fixed to the ratchet body 2.1 is rotatably arranged in the circular hole 1.11. The ratchet head 2 is coaxially penetrated by a pressure rod 6, which slides with the ratchet head 2 and is connected by a key. The upper end of the pressure rod 3 protrudes upward from the limit ring 5 and slides with the limit ring 5, and the lower end of the pressure rod 6 extends downward into the sleeve joint 2.2. An annular flange 6.1 is provided on the upper part of the pressure rod 6 in the head shell 1.1, and the pressure rod 3 between the pressure rod 3 and the ratchet head 2 is penetrated by a spring 7 that pushes the annular flange 6.1 upward to fit on the limit ring 5. The spring 7 is positioned by a step arranged between the pressure rod 3 and the ratchet head 2. The top center of the ratchet head 2 is provided with an annular limit seat 3.3 which cooperates with the annular flange 6.1 on the pressure rod 3 to limit the downward displacement position of the pressure rod 3.

[0022] A circular hole 3.21 is provided on the side wall of the sleeve joint 3.2, and a positioning ball 8 is provided in the circular hole 3.21. The positioning ball 8 is radially movably arranged in the circular hole 3.21. The outer port diameter of the circular hole 3.21 is smaller than the diameter of the positioning ball 8. The pressure rod 6 is provided with an arc groove 6.2 that cooperates with the positioning ball 8.

[0023] When the pressure rod 6 is in the working state of the wrench, the annular flange 6.1 on the pressure rod 6 is upwardly fitted on the limit ring 5 under the thrust of the spring 7. At this time, the arc groove 6.2 of the pressure rod 6 is offset from the position of the positioning ball 8, and the positioning ball 8 is pushed outward through the arc side wall to protrude the sleeve 3.2 joint. The side walls around the sleeve hole of the sleeve 4 are respectively provided with arc grooves 4.2 that cooperate and lock with the protruding part of the positioning ball 8.

[0024] When the sleeve is inserted, the pressure rod 6 is pressed downward, and the pressure rod 6 compresses the spring 7, so that the annular flange 6.1 is downwardly fitted on the annular limit seat 3.3, and the arc groove 6.2 on the pressure rod 6 is driven to align with the circular hole 3.21 of the sleeve joint 3.2, and then the sleeve 4 is inserted upward, and the inner wall of the sleeve 4 pushes the positioning ball 8 to retract inward into the circular hole 3.21. After being inserted into place, the pressure rod 6 is released, and the pressure rod returns to its original position upward under the action of the spring 7, and pushes the positioning ball 8 through the arc outer wall of the pressure rod to be positioned in the arc groove 4.2 of the sleeve 4.

[0025] The principles of pulling out the sleeve 4 and inserting the sleeve 4 are basically similar, and will not be elaborated here.

[0026] The tail end of the ratchet head 1 is connected to a hinge seat 9, and hinge grooves are provided on both sides of the tail end of the hinge seat 9. The hinge grooves are rotatably connected to handles 11 through connecting rods 10. The connecting rod 10 is tightly rotated with the hinge grooves of the hinge seat 9 and the corresponding handles so that the handles 11 can be folded and retracted to both sides of the ratchet head 1, and the handles in the folded state are in contact with or close to the two side walls of the ratchet head 1.

[0027] As a further explanation of this embodiment, tight rotational fit requires the rotation of the handle and the connecting rod under a certain external force, which is widely used in existing selfie sticks, mobile phone holders and other fields and belongs to the existing technology.

Claims

1. A detachable foldable tuning wrench, comprising a ratchet head and a handle connected to the tail end of the ratchet head, the ratchet head comprising a head shell, a ratchet head and a switching assembly cooperating with the ratchet head rotatably mounted in the head shell, the switching assembly being used to switch the rotation direction of the ratchet head, the ratchet head comprising a ratchet body and a sleeve joint extending axially from the ratchet body and extending downwardly out of the head shell, a sleeve being replaceably sleeved on the sleeve joint, a sleeve hole sleeved with the sleeve joint being provided at the top center position of the sleeve, an arc-shaped groove for locking being provided on the inner side wall of the sleeve hole; Features: A pressure rod is coaxially passed through the ratchet head, and the pressure rod and the ratchet head are axially slidably matched and circumferentially positioned. The upper end of the pressure rod protrudes upward from the ratchet head, and the lower end of the pressure rod extends downward into the sleeve joint. A circular hole is provided on the side wall of the sleeve joint, and a positioning ball is provided in the circular hole. The positioning ball is radially movably arranged in the circular hole, and the diameter of the outer port of the circular hole is smaller than the diameter of the positioning ball. The pressure rod is provided with an arc groove that cooperates with the positioning ball. The pressure rod drives the arc groove on the pressure rod to connect or stagger with the circular hole on the sleeve joint through axial displacement. A spring that pushes the pressure rod to reset upward is passed through the pressure rod between the pressure rod and the ratchet head. When the spring is in an extended state, the arc groove on the pressure rod is staggered with the circular hole on the sleeve joint. The arc outer wall of the pressure rod pushes the positioning ball to protrude from the outer wall of the sleeve joint and locks with the arc groove on the inner side of the sleeve. When the spring is in a downward compressed state, it drives the arc groove on the pressure rod to align with the circular hole on the sleeve joint. At this time, the locking ball is driven to retract into the circular hole during the insertion and removal of the sleeve.

2. The detachable foldable tuning wrench according to claim 1, characterized in that: A circular hole coaxially arranged with the ratchet head is provided at the top of the head shell, and a limiting ring fixed to the ratchet body is rotatably provided in the circular hole. The upper end of the pressure rod protrudes upward from the limiting ring and slides with the limiting ring. An annular flange is provided on the upper part of the pressure rod in the head shell, and a spring pushes the annular flange upward to fit on the limiting ring. An annular limiting seat is provided at the top center of the ratchet head, which cooperates with the annular flange on the pressure rod to limit the downward displacement position of the pressure rod.

3. The detachable and foldable tuning wrench according to claim 1, characterized in that: The tail end of the ratchet head is connected to a hinge seat, and hinge grooves are provided on both sides of the tail end of the hinge seat. The hinge grooves are rotatably connected to handles through connecting rods. The connecting rods are tightly rotated with the hinge grooves of the hinge seat and the corresponding handles, so that the handles can be folded and retracted to both sides of the ratchet head.

4. The detachable foldable tuning wrench according to claim 1, characterized in that: The lower end of the head shell is an opening, and the lower end opening of the head shell is detachably connected with an end cover through bolts.

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