Grip structure for rotary machining

Abstract

This utility model relates to the field of household tool technology, specifically to a grip structure for rotary machining, including a grip body and a limiting structure. The limiting structure includes a receiving groove, a limiting ball, and an auxiliary limiting ring. A funnel-shaped placement hole is provided on the side wall of the receiving groove, the inner diameter of which increases outwards from the receiving groove. The limiting ball is located within the placement hole, with its center also located within the placement hole. The auxiliary limiting ring is fitted onto the grip body to limit the movement of the limiting ball. This effectively solves the problem of insecure fixing of the cutting head in existing rotary machining fixing structures. This utility model uses a funnel-shaped placement hole, a limiting ball located within the placement hole with one end extending into the receiving groove, and an auxiliary limiting ring for limiting the limiting ball. The cutting head in the receiving groove is fixed by the movement of the limiting ball within the placement hole. Under the action of the funnel-shaped placement hole, the limiting ball can be moved out of the placement hole without applying external force.

Description

Technical Field

[0001] This utility model relates to the field of household tool technology, and specifically to a grip structure for rotary processing. Background Technology

[0002] In the field of household tools, for workpieces that require rotational processing, such as screwdrivers or electric drills, auxiliary components are often used to fix the screwdriver head in order to better accommodate various sizes of screwdriver bits. After fixing the screwdriver head, the auxiliary component can be held and a certain external force can be applied to it to drive the screwdriver head to rotate.

[0003] To facilitate the disassembly of the cutting head, existing auxiliary components typically employ a magnetic magnet within the receiving groove that holds the cutting head. The magnet attracts and limits the metal cutting head, and when it is necessary to remove the cutting head, only an external force greater than the magnetic force of the magnet is required. However, this limiting structure, which relies solely on the magnet for fixation, is not secure in its magnetic structure when external force is applied, and the cutting head is prone to loosening and falling off during use. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a holding structure for rotary machining, which effectively solves the problem that the existing fixing structure for rotary machining does not securely fix the tool head.

[0005] The technical solution provided by this utility model is a gripping structure for rotary processing, comprising a gripping body and a limiting structure. The limiting structure is disposed on the gripping body for limiting the rotary output part. The limiting structure includes a receiving groove, limiting balls, and an auxiliary limiting ring. The receiving groove is formed on the gripping body for accommodating the rotary output part. Multiple limiting balls are evenly distributed along the rotation axis of the rotary output part on the side wall of the receiving groove. A trumpet-shaped placement hole is formed on the side wall of the receiving groove, with the inner diameter of the placement hole increasing outwards from the receiving groove. The limiting balls are located within the placement hole, with their centers also located within the placement hole. The auxiliary limiting ring is fitted onto the gripping body for limiting the balls.

[0006] Preferably, the auxiliary limiting ring is movable along the axis of the gripping body and has a relief groove communicating with the receiving groove, and the limiting ball can move from the receiving groove to the relief groove.

[0007] Preferably, the sidewall of the relief groove located in the direction of movement of the gripping body axis is an inclined surface that is inclined toward the placement hole.

[0008] Preferably, the gripping body includes a colloid fixing part, a movable clearance part, and a limiting snap-fit ​​part. The colloid fixing part is used to fix the colloid. The movable clearance part is located between the limiting snap-fit ​​part and the colloid fixing part to provide moving space for the auxiliary limiting ring. The limiting snap-fit ​​part is located at one end away from the colloid fixing part to limit the auxiliary limiting ring.

[0009] Preferably, the colloid fixing part includes a card plate and a card slot. The card plate is a plurality of evenly distributed polygonal prisms on the outer edge of the gripping body for colloid adhesion. The card slot is formed on the outer edge of the gripping body and is perpendicular to the card plate.

[0010] Preferably, the movable clearance part includes a spring fitted onto the outer edge of the gripping body, one end of the spring being fixedly connected to the end of the card plate, and the other end of the spring being fixedly connected to the end of the auxiliary limiting ring.

[0011] Preferably, the limiting engagement portion includes a fixing groove formed on the outer edge surface of the gripping body, an elastic fixing ring is provided in the fixing groove, and the outer edge surface of the elastic fixing ring extends out of the fixing groove and contacts the auxiliary limiting ring.

[0012] Preferably, the auxiliary limiting ring has a snap-fit ​​groove for accommodating the elastic retaining ring.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model employs a funnel-shaped placement hole, a limiting ball disposed within the placement hole with one end extending into the receiving groove, and an auxiliary limiting ring for limiting the ball. The limiting ball moves within the placement hole to limit and fix the cutter head within the receiving groove. Moreover, under the action of the funnel-shaped placement hole, the limiting ball can be moved out of the placement hole without applying external force.

[0015] This utility model uses a relief groove on the auxiliary limiting ring to assist the movement of the limiting ball. When the auxiliary limiting ring moves up and down, the inclined sidewall of the relief groove can better push the limiting ball, so that the limiting ball can slowly enter the receiving groove, thereby limiting the cutter head to be fixed in the receiving groove.

[0016] This utility model uses a card plate and a card slot to provide more adhesion space for the adhesive material on the outside of the gripping body. At the same time, under the action of the card plate and the card slot, the adhesive material on the outside of the gripping body can be better fixed to the gripping body. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a cross-sectional front view schematic diagram of the present invention;

[0019] Figure 3 This is a cross-sectional top view of the structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the auxiliary limiting ring after it moves downward in this utility model;

[0021] Figure 5 This is a cross-sectional front view of the auxiliary limiting ring after it has moved downwards in this utility model.

[0022] In the diagram, 1-accommodating groove; 2-limiting ball; 3-auxiliary limiting ring; 4-placement hole; 5-yielding groove; 6-clamping plate; 7-clamping slot; 8-spring; 9-fixing groove; 10-elastic fixing ring; 11-clamping groove. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Refer to the instruction manual appendix Figure 1-5 A gripping structure for rotary machining includes a gripping body and a limiting structure. The user operates the gripping body manually. The limiting structure is located on the gripping body to limit the rotary output part. The rotary output part can be a screwdriver head or a drill bit, or other workpieces that need to be rotated to achieve the working process.

[0025] The gripping body is divided into a colloid fixing part, a moving clearance part, and a limiting snap-fit ​​part. The colloid fixing part is used to fix the colloid wrapped around the outside of the gripping body. The colloid makes it easier for the user to grip and increases the friction of the gripping body during use, making it easier for the staff to use.

[0026] The colloid fixing part includes a retaining plate 6 and a retaining groove 7. The retaining plate 6 is multiple and evenly distributed on the outer edge surface of the gripping body and is in the shape of a polygonal prism for colloid adhesion. The retaining groove 7 is opened on the outer edge surface of the gripping body and is set perpendicular to the retaining plate 6. Under the action of the retaining plate 6 and the retaining groove 7, the colloid can be better wrapped and fixed on the gripping body.

[0027] The movable clearance part is located between the limiting snap-fit ​​part and the adhesive fixing part. This part can provide a certain amount of moving space for the auxiliary limiting ring 3. The auxiliary limiting ring 3 can overlap with the movable clearance part during the movement.

[0028] The movable clearance part includes a spring 8 fitted on the outer edge of the grip body. One end of the spring 8 is fixedly connected to the end of the card plate 6, and the other end of the spring 8 is fixedly connected to the end of the auxiliary limiting ring 3. During the downward movement of the auxiliary limiting ring 3, the auxiliary limiting ring 3 will press the spring 8. Through the pressure of the auxiliary limiting ring 3, the spring 8 is compressed and provides an external force for the auxiliary limiting ring 3 to return to its upward position.

[0029] The limiting engagement part is located at the end of the gripping body away from the adhesive fixing part and is set on the outside of the auxiliary limiting ring 3. It is used to limit the auxiliary limiting ring 3 and prevent the auxiliary limiting ring 3 from separating from the gripping body.

[0030] The limiting engagement part includes a fixing groove 9 formed on the outer edge surface of the gripping body. An elastic fixing ring 10 is provided in the fixing groove 9. At the same time, the outer edge surface of the elastic fixing ring 10 extends out of the fixing groove 9 and contacts the upper end surface of the auxiliary limiting ring 3. The outer edge surface of the elastic fixing ring 10 limits the extreme position of the auxiliary limiting ring 3.

[0031] In order to better limit the auxiliary limiting ring 3, a snap-fit ​​groove 11 is also provided on the auxiliary limiting ring 3 to accommodate the elastic fixing ring 10. When the auxiliary limiting ring 3 moves upward to the limit position, the elastic fixing ring 10 is inserted into the snap-fit ​​groove 11 to further limit the auxiliary limiting ring 3.

[0032] The limiting structure includes a receiving groove 1, a limiting ball 2, and an auxiliary limiting ring 3. The receiving groove 1 is opened on the gripping body to receive the rotating output part. The receiving groove 1 is a polygonal prism and has the same shape as the rotating output part. The rotating output part is limited in the direction of the rotation axis by the edges of the polygonal prism of the receiving groove 1.

[0033] Multiple limiting balls 2 are evenly distributed on the side wall of the receiving groove 1 along the rotation axis of the rotating output part. The side wall of the receiving groove 1 is provided with a funnel-shaped placement hole 4. The inner diameter of the placement hole 4 increases from the receiving groove 1 to the outside of the receiving groove 1. The limiting balls 2 are placed in the placement hole 4, and the center of the limiting balls 2 is located in the placement hole 4. Under the action of external force, the part of the limiting balls 2 that does not exceed the center of the ball is inserted into the receiving groove 1 to limit the rotating output part.

[0034] The auxiliary limiting ring 3 is fitted on the outside of the grip body and can slide along the axis of the grip body. During the sliding process of the auxiliary limiting ring 3, the auxiliary limiting ring 3 can block the opening of the placement hole 4. During the movement of the auxiliary limiting ring 3 along the axis of the grip body, the limiting ball 2 moves in the placement hole 4 and the end of it inserted into the receiving groove 1 moves out.

[0035] The auxiliary limiting ring 3 has a relief groove 5. The relief groove 5 is recessed away from the gripping body. Under the action of the relief groove 5, the limiting ball 2 can move in the placement hole 4 and be inserted into the relief groove 5.

[0036] The side wall of the relief groove 5 in the direction of the movement of the gripping body axis is an inclined surface that is inclined toward the placement hole 4. At the same time, the vertical cross section of the relief groove 5 in the direction of the gripping body axis is an outwardly expanding isosceles trapezoidal shape. Under the action of its inclined surface, when the auxiliary limiting ring 3 moves upward, the inclined surface of the relief groove 5 will press the limiting ball 2, so that the limiting ball 2 can enter the placement hole 4 better.

[0037] When this utility model is in use, under the action of the colloid fixing part, the operator attaches a suitable colloid to the outside of the gripping body. Since the colloid is in a fluid state when it is not cured, it can fill the space between adjacent card plates 6. At the same time, the card slot 7 is also filled with fluid colloid. At a suitable temperature, the colloid solidifies into a solid. Under the action of the card plates 6 and the card slot 7, the colloid can be better fixed on the gripping body.

[0038] When the gel is fixed on the grip body, the operator presses down the auxiliary limiting ring 3. As the auxiliary limiting ring 3 moves downward, it compresses the spring 8. At the same time, the clearance groove 5 is connected to the placement hole 4. Under the action of the inclined surface of the clearance groove 5 and the inner diameter of the placement hole 4, the limiting ball 2 moves outward into the clearance groove 5. At this time, the operator inserts the appropriate blade into the receiving groove 1. Under the action of the receiving groove 1, the blade is first limited along the axis of the grip body.

[0039] Under the action of spring 8, the auxiliary limiting ring 3 moves upward to the limit position. During the upward movement of the auxiliary limiting ring 3, the inclined surface of the positioning groove 5 squeezes the limiting ball 2 and causes a part of the limiting ball 2 to be inserted into the receiving groove 1 to limit the cutter head in the receiving groove 1. Under the action of the fixing groove 9, the elastic fixing ring 10 and the snap-fit ​​groove 11, the upward movement distance of the auxiliary limiting ring 3 is limited to prevent the auxiliary limiting ring 3 from moving upward to the state of being separated from the gripping body.

[0040] This utility model employs a funnel-shaped placement hole 4, a limiting ball 2 disposed within the placement hole 4 with one end extending into the receiving groove 1, and an auxiliary limiting ring 3 for limiting the limiting ball 2. The limiting ball 2 moves within the placement hole 4 to limit and fix the cutter head within the receiving groove 1. Moreover, under the action of the funnel-shaped placement hole 4, the limiting ball 2 can be moved out of the placement hole 4 without applying external force.

[0041] This utility model uses a relief groove 5 formed on the auxiliary limiting ring 3 to assist the movement of the limiting ball 2. When the auxiliary limiting ring 3 moves up and down, the inclined sidewall of the relief groove 5 can better push the limiting ball 2, so that the limiting ball 2 can slowly enter the receiving groove 1, thereby limiting the cutter head to be fixed in the receiving groove 1.

[0042] The present invention uses a card plate 6 and a card slot 7 to provide more adhesion space for the adhesive on the outside of the gripping body. At the same time, under the action of the card plate 6 and the card slot 7, the adhesive on the outside of the gripping body can be better fixed to the gripping body.

Claims

1. A holding structure for rotary processing, comprising a holding main body and a limiting structure provided on the holding main body for limiting a rotary output portion, characterized in that, The limiting structure includes a receiving groove (1), a limiting ball (2), and an auxiliary limiting ring (3). The receiving groove (1) is opened on the grip body to receive the rotating output part. The limiting ball (2) is multiple and evenly distributed on the side wall of the receiving groove (1) along the rotation axis of the rotating output part. The side wall of the receiving groove (1) is provided with a funnel-shaped placement hole (4). The inner diameter of the placement hole (4) increases outward from the receiving groove (1). The limiting ball (2) is located in the placement hole (4) and its center is located in the placement hole (4). The auxiliary limiting ring (3) is fitted on the grip body to limit the ball (2).

2. The gripping structure for rotary machining according to claim 1, characterized in that: The auxiliary limiting ring (3) can move along the axis of the gripping body and is provided with a relief groove (5) that communicates with the receiving groove (1). The limiting ball (2) can move from the receiving groove (1) to the relief groove (5).

3. The gripping structure for rotary machining according to claim 2, characterized in that: The clearance groove (5) is located on the side wall of the gripping body axis moving direction and is inclined towards the placement hole (4).

4. The gripping structure for rotary machining according to claim 1, characterized in that: The gripping body includes a colloid fixing part, a movable clearance part, and a limiting snap-fit ​​part. The colloid fixing part is used to fix the colloid. The movable clearance part is located between the limiting snap-fit ​​part and the colloid fixing part to provide moving space for the auxiliary limiting ring (3). The limiting snap-fit ​​part is located at one end away from the colloid fixing part to limit the auxiliary limiting ring (3).

5. The gripping structure for rotary machining according to claim 4, characterized in that: The adhesive fixing part includes a card plate (6) and a card slot (7). The card plate (6) is a plurality of evenly distributed on the outer edge of the gripping body and is in the shape of a polygonal prism for adhesive adhesion. The card slot (7) is opened on the outer edge of the gripping body and is set perpendicular to the card plate (6).

6. The gripping structure for rotary machining according to claim 5, characterized in that: The movable clearance part includes a spring (8) fitted onto the outer edge of the gripping body. One end of the spring (8) is fixedly connected to the end of the card plate (6), and the other end of the spring (8) is fixedly connected to the end of the auxiliary limiting ring (3).

7. The gripping structure for rotary machining according to claim 6, characterized in that: The limiting snap-fit ​​part includes a fixing groove (9) formed on the outer edge surface of the gripping body. An elastic fixing ring (10) is provided in the fixing groove (9). The outer edge surface of the elastic fixing ring (10) extends out of the fixing groove (9) and contacts the auxiliary limiting ring (3).

8. The gripping structure for rotary machining according to claim 6, characterized in that: The auxiliary limiting ring (3) is provided with a snap-fit ​​groove (11) for accommodating the elastic fixing ring (10).

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