O-shaped ring mounting tool and O-shaped ring mounting method

Abstract

The invention relates to the technical field of sealing element installation, and provides an O-shaped ring installation tool and an O-shaped ring installation method. The O-shaped ring mounting tool comprises an arc-shaped extrusion part, and the arc-shaped extrusion part comprises an arc-shaped base part with radian; the extrusion tip is fixed along the outline of the arc-shaped outer side edge of the arc-shaped base part, the cross section of the extrusion tip is a sharp corner, and the extrusion tip is used for pushing and extruding the O-shaped ring into the mounting groove through the side slope of the sharp corner; and the handle is connected with the arc-shaped base part. The O-shaped ring mounting tool can be used in multiple methods, and the O-shaped ring can be pushed and extruded into the mounting groove by adopting multiple methods such as rolling, vertical extrusion, inclined extrusion and overturning.

Description

Technical Field

[0001] The present invention relates to the technical field of seal installation, and more particularly, to an O-ring installation tool and an O-ring installation method. Background Art

[0002] An O-ring is a sealing ring with a circular cross-section, usually made of rubber. Because its cross-section is O-shaped, it is called an O-shaped rubber sealing ring, or simply an O-ring. Due to its low cost, simple manufacturing, reliable function, and simple installation requirements, O-rings can be used in static applications or dynamic applications where there is relative movement between components, such as the shaft of a rotary pump and the piston of a hydraulic cylinder.

[0003] Typically, O-rings are installed manually. That is, a part of the O-ring is placed on the installation groove, and the O-ring is pressed by fingers so that this part enters the installation groove. Then, the O-ring is gradually pressed along the installation groove by fingers until the entire O-ring is pressed into the installation groove. This manual installation method is time-consuming and laborious, reducing the installation efficiency, and long-term finger pressing also causes finger pain. Moreover, due to finger pressing, the O-ring cannot be tightly installed into the installation groove, which may lead to leakage.

[0004] There are also some special tools for O-ring installation, but these special tools are often only applicable to the specific equipment to which the O-ring belongs, or can only be used for one form of installation working condition, and cannot be widely applied. For example, the Chinese patent with the application number CN201020187586.4 is used to install an O-ring on the outer circumference. This installation tool is conical. When in use, the O-ring is put on the O-ring installation end, and then the plane of the O-ring installation end is attached to one end of the workpiece where the O-ring is to be installed. The bottom of the hand-held end is struck, and the O-ring slides down along the cone under vibration and is sleeved on the outer circumference of the workpiece. However, this tool can only be used to install O-rings on the outer circumference of shaft-like workpieces and cannot be used for installation grooves on planes. Moreover, this tool only puts the O-ring on the outer circumference and cannot effectively press the O-ring into the installation groove.

[0005] Therefore, there is an urgent need for an O-ring installation tool that can be used for installation grooves on planes and outer circumferences, and can efficiently and quickly install the O-ring tightly into the installation groove. Summary of the Invention

[0006]

Technical Problem

[0007] To solve the problems described above, the object of the present invention is to provide an O-ring installation tool and an O-ring installation method, which can push and squeeze the O-ring into the installation groove by various methods such as rolling, vertical extrusion, inclined extrusion, and flipping by holding the installation tool.

[0008]

Technical Solution

[0009] To achieve the above object, the present invention provides an O-ring installation tool, including:

[0010] An arc-shaped extrusion part, the arc-shaped extrusion part includes:

[0011] An arc-shaped base, having a radian;

[0012] An extrusion tip, which is formed by the intersection of two side inclined surfaces fixed along the outer arc edge of the arc-shaped base in a form with a sharp angle in cross-section. The extrusion tip is used to push and squeeze the O-ring into the installation groove through its side inclined surfaces;

[0013] A handle, which is connected to the arc-shaped base.

[0014] Optionally, the radian range of the arc-shaped base is π / 2 to 3π / 2.

[0015] Optionally, the extrusion tip is detachably mounted on the arc-shaped base.

[0016] Optionally, an embedding groove is provided on the outer arc edge of the arc-shaped base, and the extrusion tip has a protrusion for embedding into the embedding groove. Through the cooperation of the protrusion and the embedding groove, the detachable connection between the extrusion tip and the arc-shaped base is realized.

[0017] Optionally, there are reinforcing ribs on the inner arc of the arc-shaped base.

[0018] Optionally, the material of the extrusion tip is one of nylon and resin.

[0019] Optionally, the end of the sharp angle adopts an arc transition.

[0020] Optionally, the arc-shaped extrusion part is bent along the extension direction of the installation groove.

[0021] Optionally, the arc-shaped base is a circle with a central rotating shaft, and the handle is connected to the central rotating shaft.

[0022] Optionally, there are multiple arc-shaped extrusion parts, and the sharp angles of each arc-shaped extrusion part are different.

[0023] Optionally, the arc-shaped extrusion part is circular, and the arc-shaped extrusion part that does not contact the installation groove serves as the handle.

[0024] The present application also provides a method for installing an O-ring. The O-ring is installed in the installation groove by using the O-ring installation tool as described above. Among them,

[0025] The extrusion tip rolls along the installation groove through the arc-shaped base, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove, or,

[0026] The extrusion tip vertically extrudes the O-ring into the installation groove. The vertical extrusion means that the plane where the O-ring installation tool is located is perpendicular to the top surface of the installation groove for extrusion, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove, or,

[0027] The extrusion tip obliquely extrudes the O-ring into the installation groove. The oblique extrusion means that the plane where the O-ring installation tool is located is inclined to the top surface of the installation groove for extrusion, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove, or,

[0028] The extrusion tip flips and extrudes the O-ring into the installation groove. The flipping extrusion means that the plane where the O-ring installation tool is located flips towards the installation groove, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove.

[0029] Optionally, the extrusion tip rolls along the installation groove through the arc-shaped base, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove, including:

[0030] One end of the arc-shaped extrusion part is leaned against the O-ring, so that the extrusion tip contacts the side of the O-ring away from the installation groove. Then, during the process of rolling an arc length by the arc-shaped base, this side inclined surface pushes and extrudes the newly contacted O-ring until the other end of the arc-shaped extrusion part contacts the O-ring, thereby extruding the O-ring contacted by one arc length into the installation groove. The O-ring contacted is extruded into the installation groove by rolling the arc-shaped base at least once until it rolls one week along the circumference of the installation groove, thereby pushing and extruding the entire O-ring into the installation groove.

[0031]

Beneficial effects

[0032] As described above, the present invention can hold the installation tool by the handle and use the extrusion tip to push and extrude the O-ring into the installation groove, which is convenient and fast to operate, thereby reducing the labor intensity, and the O-ring is firmly installed, reducing the rework time consumed due to leakage.

[0033] Moreover, the installation tool can have multiple usage methods, and multiple methods such as rolling, vertical extrusion, oblique extrusion, and flipping can be adopted to push and extrude the O-ring into the installation groove.

[0034] Moreover, the extrusion tip is detachable. For O-rings with different diameters, different extrusion tips can be replaced, making the installation tool applicable to a wider range. Brief Description of the Drawings

[0035] Figure 1 is a schematic diagram of an O-ring installation tool according to the first embodiment of the present invention.

[0036] Figure 2 is a schematic diagram of an O-ring installation tool with different arcs according to the first embodiment of the present invention.

[0037] Figure 3 is a schematic diagram of an O-ring installation tool with different extrusion tips according to the first embodiment of the present invention.

[0038] Figure 4 is a schematic diagram of O-rings of different models according to the first embodiment of the present invention.

[0039] Figure 5 is a schematic diagram of different extrusion tips according to the first embodiment of the present invention.

[0040] Figure 6 is a schematic diagram of the process of rolling and extruding an O-ring according to the first embodiment of the present invention.

[0041] Figure 7 is a schematic diagram of the process of flipping and extruding an O-ring according to the first embodiment of the present invention.

[0042] Figure 8 is a schematic diagram of the process of tilting and extruding an O-ring according to the first embodiment of the present invention.

[0043] Figure 9 is a schematic diagram of the process of vertically extruding an O-ring according to the first embodiment of the present invention.

[0044] Figure 10 is a schematic diagram of an O-ring installation tool according to the second embodiment of the present invention.

[0045] Figure 11 is a schematic diagram of an O-ring installation tool according to the third embodiment of the present invention.

[0046] Figure 12 is a schematic diagram of an O-ring installation tool according to the fourth embodiment of the present invention.

[0047]

Brief Description of the Reference Numerals

[0048] 1: O-ring installation tool 100: Arc-shaped extrusion part,

[0049] 110: Arc-shaped base 120: Extrusion tip

[0050] 200: Handle 121: First side inclined surface

[0051] 122: Second side inclined surface 130: Protrusion

[0052] 140: Reinforcing rib 220: Embedded groove

[0053] 300: O-ring 400: Installation groove Detailed implementation manner

[0054] Next, with reference to the accompanying drawings, the O-ring installation tool according to an embodiment of the present invention will be described in detail. However, in the process of describing the present invention, for the sake of clarity of the gist of the present invention, the specific description of well-known functions or structures will be omitted.

[0055] The O-ring installation tool 1 of the present invention can be applicable to the installation of O-rings. The following will be combined with Figures 1 to 12 to describe the O-ring installation tool according to an embodiment of the present invention.

[0056] First Embodiment

[0057] As Figure 1 shown, the O-ring installation tool 1 according to the first embodiment of the present invention includes: an arc-shaped extrusion part 100, which has an arc-shaped base 110 for pushing and extruding the O-ring 300 into the installation groove 400; a handle 200, the two ends of which are connected to the two ends of the arc-shaped base 110. Among them, Figure 1 in the handle 200, the handle is cut open and turned over for showing, so as to facilitate viewing the connection relationship between the handle 200 and the arc-shaped extrusion part 100.

[0058] The arc-shaped extrusion part 100 includes: an arc-shaped base 110, which has a certain radian; an extrusion tip 120, which is located on the arc-shaped outer edge of the arc-shaped base 110 and has an inclined surface for pushing and extruding the O-ring 300.

[0059] Among them, the arc-shaped base 110 can be formed by bending a straight rod according to the radian requirement. The radian of the arc-shaped base 110 can be a semi-circle, that is, the radian is π. The arc-shaped base 110 can, during the rolling process, make the arc-shaped extrusion part push and extrude the O-ring 300 on the installation groove 400 according to the radian, so as to push and extrude the O-ring 300 into the installation groove 400. The radian is not limited to π, and can also be less than π, such as π / 2, 3π / 4. It can also be greater than π, such as 3π / 2, etc. However, the larger the radian exceeds π, the more difficult it is to hold the handle and operate the rolling by hand.

[0060] As Figure 2The figure shows a schematic diagram of installation tools with different radian values. The radian value of the arc-shaped base 110 determines the distance that the arc-shaped extrusion part 100 acts on the O-ring 300. If the radian is π / 2, the pushing and extrusion distance on the O-ring 300 is short; if the radian is 3π / 4, the pushing and extrusion distance on the O-ring 300 is longer. Optimally, the radian of the arc-shaped base is π.

[0061] The extrusion tip 120 is fixed along the contour of the outer edge of the arc of the arc-shaped base 110, thereby forming an extrusion tip with the same radian as the arc-shaped base 110. The cross-section of the extrusion tip 120 is a sharp angle. The extrusion tip 120 includes a first side inclined surface 121 and a second side inclined surface 122. The inner sides of the first side inclined surface 121 and the second side inclined surface 122 are connected to the contour of the outer edge of the arc of the arc-shaped base 110, and the outer sides gradually approach and connect to form a sharp angle with the same radian as the outer edge of the arc. During the rolling process of the extrusion tip 120 on the arc-shaped base 110, its first side inclined surface 121 contacts one side of the O-ring 300. By applying a certain pressure during the rolling process on the arc-shaped base 110, the first side inclined surface 121 applies pressure to one side of the O-ring, thereby extruding and pushing the O-ring 300 into the installation groove. It should be noted that when the arc-shaped base 110 is rolling, the O-ring installation tool 1 can be perpendicular to the top surface of the installation groove 400, or can be inclined at a certain angle to the outside of the installation groove 400, and both can complete the extrusion installation process. More preferably, it is inclined at a certain angle to the outside, so that the side inclined surface can be more effectively used to extrude the O-ring. The first side inclined surface 121 should have a smooth surface to facilitate more effectively pushing and extruding the O-ring into the installation groove.

[0062] During extrusion, one end of the arc-shaped base 110 is leaned against the O-ring 300, so that its first side inclined surface 121 contacts the O-ring 300. Specifically, it is the first side inclined surface 121 that contacts one side of the O-ring 300. Then the arc-shaped base 110 rolls a distance of an arc length. During the rolling process, the first side inclined surface 121 continuously pushes and extrudes the newly contacted side of the O-ring 300 until the other end of the arc-shaped base 110 contacts the O-ring 300. The O-ring 300 contacted by an arc length can be extruded into the installation groove. Then the said end of the arc-shaped base 110 continues to contact the remaining O-rings 300 and rolls a distance of an arc length again, and the contacted O-rings 300 can be pushed and extruded into the installation groove. Repeating this process until it rolls one week along the circumference of the installation groove 400, thereby pushing and extruding the entire O-ring 300 into the installation groove 400.

[0063] Moreover, during the rolling process of the arc-shaped base 110, the O-ring can also be pushed in a way that gradually approaches the installation groove 400. That is to say, during the process of the first side inclined surface 121 pushing the O-ring into the installation groove, the first side inclined surface 121 not only pushes the O-ring through its inclined surface, but also further pushes the O-ring by approaching the installation groove, so that the O-ring can be more reliably and accurately squeezed into the installation groove. Specifically, when in use, the handle 200 can be held by hand, and when the wrist is rotated forward to make the arc-shaped base roll forward, the wrist also deflects towards the side close to the installation groove.

[0064] Moreover, after the O-ring is squeezed into the installation groove, the arc-shaped base 110 can also be used to continue squeezing on the O-ring, so that the O-ring can be tightly embedded into the installation groove. Rolling extrusion can be adopted, or extrusion perpendicular to the top surface of the groove can be adopted.

[0065] The O-ring installation tool 1 of this embodiment can be applicable to, for example, rectangular installation grooves, outer circumferential circular installation grooves of shaft parts, etc. If the radian of the arc-shaped base 110 is different, the length of the O-ring 300 contacted by rolling one arc length is also different. If the radian is smaller, the length of the O-ring 300 contacted by rolling one arc length is shorter, and then it is necessary to roll several times to complete the installation of the O-ring. If the radian is larger, the length of the O-ring 300 contacted by rolling one arc length is longer, and then it can be completed by rolling fewer times.

[0066] Among them, the inclination angles of the first side inclined surface 121 and the second side inclined surface 122 can be changed according to the diameter of the installed O-ring. As Figure 4 shown, from left to right are schematic diagrams of different O-rings with small, medium, and large diameters. As Figure 3 shown in Figure 3 A, the angle of the sharp corner between the first side inclined surface 121 and the second side inclined surface 122 is larger, so the area of the first side inclined surface 121 and the second side inclined surface 122 seen from the side is smaller. The cross-section of the sharp corner is as Figure 5 shown in Figure 5 A. After the small-diameter O-ring is installed in the installation groove, the height protruding from the installation groove is smaller, so the first side inclined surface 121 with a larger-angle sharp corner can more appropriately push and squeeze the O-ring.

[0067] As Figure 6 shown in Figure 6 A to Figure 6 C are schematic diagrams of the O-ring 300 being squeezed from outside the installation groove 400 into the installation groove 400. Figure 6 A is the moment when the O-ring 300 is located outside the installation groove 400, Figure 6 B is the moment when the O-ring 300 is partially pushed and squeezed into the installation groove 400,Figure 6 C is the moment when the entire O-ring 300 is pushed and squeezed into the installation groove 400. When the O-ring 300 is outside the installation groove 400, an obliquely downward pressure is applied to the O-ring 300 through the first side inclined surface 121 of the extrusion tip 120, which not only pushes the O-ring towards the installation groove but also causes the O-ring to deform and contract downward, thereby squeezing the O-ring in contact with the extrusion tip into the installation groove 400. Moreover, as the arc-shaped base 110 rolls along the installation groove 400, the first side inclined surface 121 applies an obliquely downward extrusion pressure to the O-ring in contact with it, thus pushing and pressing the O-ring in contact with it into the installation groove 400.

[0068] As Figure 3 shown in Figure 3 B, where the angle of the sharp corner between the first side inclined surface 121 and the second side inclined surface 122 becomes smaller, so the area of the first side inclined surface 121 and the second side inclined surface 122 seen from the side is larger, and the cross-sectional view of the sharp corner is as shown in Figure 5 shown in Figure 5 B. The O-ring of medium diameter protrudes from the installation groove by a relatively large height after being installed in the installation groove, so the first side inclined surface 121 of the sharp corner with a smaller angle can more appropriately push and squeeze the O-ring.

[0069] As Figure 3 shown in Figure 3 C, where the angle of the sharp corner between the first side inclined surface 121 and the second side inclined surface 122 is even smaller, so the area of the first side inclined surface 121 and the second side inclined surface 122 seen from the side is larger, and the cross-sectional view of the sharp corner is as shown in Figure 5 shown in Figure 5 C. The O-ring of large diameter protrudes from the installation groove by an even larger height after being installed in the installation groove, so the first side inclined surface 121 of the sharp corner with an even smaller angle can more appropriately push and squeeze the O-ring.

[0070] The handle 200 can be detachably connected to the arc-shaped extrusion part 100 to facilitate replacing the arc-shaped extrusion part 100 to be suitable for O-rings of different models. It can also be that the arc-shaped base 110 and the handle 200 are integrated, and only the extrusion tip 120 is made detachable. As shown in Figure 3 where the arc-shaped base 110 and the handle 200 are integrated, and an embedding groove 220 with the same radian is provided on the arc-shaped outer edge of the arc-shaped base 110, and the extrusion tip 120 has a protrusion 130 for embedding into the embedding groove 220. Through the cooperation of the protrusion 130 and the embedding groove 220, the extrusion tip 120 can be detachably replaced. By replacing the extrusion tip 120, the installation tool can be made suitable for installing O-rings of different diameters. The above connection method between the arc-shaped base 110 and the extrusion tip 120 is only exemplary, and they can also be connected by fasteners, and it is not excluded to use welding, bonding, magnetic attraction, etc. to connect them.

[0071] In addition, it can be observed on which side of the mounting groove the O-ring is biased towards the mounting groove. The O-ring installation tool 1 can be tilted at a certain angle towards the side where the O-ring 300 outside the mounting groove is located, and combined with flipping towards the mounting groove direction to push the O-ring into the mounting groove. As Figure 7 shown in Figure 7 Figure A, if the O-ring 300 is outside the mounting groove 400, the O-ring installation tool 1 can be tilted at a certain angle towards the side where the O-ring 300 outside the mounting groove is located, so that the first side inclined surface 121 contacts the side of the O-ring away from the mounting groove. Then, the O-ring installation tool 1 is flipped towards the mounting groove direction, Figure 7 as shown in Figure 7 Figure B. After the O-ring installation tool 1 is flipped by a certain angle, the O-ring is pushed towards the mounting groove a little. As the O-ring installation tool 1 is flipped, finally, as Figure 7 shown in Figure C, the first side inclined surface 121 pushes the contacted O-ring 300 into the mounting groove 400.

[0072] In addition, the installation tool 1 can also adopt a method of tilting and extruding the O-ring. It can be observed on which side of the mounting groove the O-ring is biased towards the mounting groove. The O-ring installation tool 1 can be tilted at a certain angle towards the side where the O-ring 300 outside the mounting groove is located, and push and extrude the O-ring towards the mounting groove 400 while maintaining the tilted angle.

[0073] As shown in Figure 8 Figure Figure 8 A, if the O-ring 300 is outside the mounting groove 400, the O-ring installation tool 1 can be tilted at a certain angle towards the side where the O-ring 300 outside the mounting groove is located, so that the first side inclined surface 121 contacts one side of the O-ring. Then, the O-ring installation tool 1 is pushed towards the mounting groove direction while maintaining the tilted angle, Figure 8 as shown in Figure 8 Figure B. After the O-ring installation tool 1 moves a certain distance, the O-ring is pushed towards the mounting groove a little. As the O-ring installation tool 1 moves, finally, as Figure 8 shown in Figure C, the first side inclined surface 121 pushes the contacted O-ring 300 into the mounting groove 400.

[0074] Alternatively, the O-ring installation tool 1 can also not be tilted, but extruded perpendicular to the top surface of the mounting groove. This situation is more applicable when the O-ring is on or partially on the mounting groove. As shown in Figure 9 Figure, a part of the O-ring is above the mounting groove and a part is on the top surface of the mounting groove. By extruding perpendicular to the top surface of the mounting groove, the O-ring can also be pushed and extruded into the mounting groove 400.

[0075] In summary, the O-ring installation tool 1 can either utilize the curvature of the arc-shaped base 110 to push and extrude the O-ring into the installation groove by rolling the arc-shaped base along the O-ring; or it can be the inclined O-ring installation tool 1 that is pushed and extruded obliquely towards the installation groove to push the O-ring into the installation groove; or it can be the inclined O-ring installation tool 1 that is flipped towards the installation groove direction to push and extrude the O-ring into the installation groove; or the O-ring installation tool 1 can be pressed perpendicular to the top surface of the installation groove. Of course, when using this tool, it is also possible to first press the O-ring into the installation groove by hand and then directly press on the installation groove with this tool. It can be seen that the installation tool of this embodiment can have multiple usage forms, which can make it suitable for the installation of various forms of installation grooves. Whether it is a rectangular installation groove, a square installation groove, or an outer circumferential circular installation groove, this installation tool can be applicable.

[0076] Among them, the extrusion tip 120 can be made of nylon material. Nylon material has a certain strength and can be used to extrude the O-ring into the groove, and its rigidity is lower than that of metal, so it will not cause extrusion damage to the O-ring. However, this embodiment is not limited to nylon material, and it can also be made of other plastic materials, or materials such as wood, steel, and resin.

[0077] Among them, the outer side of the sharp corner of the extrusion tip 120 can adopt an arc transition to prevent scratching the O-ring during the extrusion process.

[0078] Among them, there is a reinforcing rib 140 on the inner arc of the arc-shaped base 110. The reinforcing rib 140 can be a flat plate, and the flat plate extends and connects to the inner side of a part of the arc-shaped base 110, thereby improving the structural strength of the arc-shaped base. And, reinforcing ribs can also be provided in the area where the arc-shaped base 110 is connected to the handle 200.

[0079] Among them, the handle 200 has anti-slip patterns to enhance the friction with the hand and enable stable handholding.

[0080] Second Embodiment

[0081] According to the second embodiment of the present invention, for a circular installation groove located on a plane, that is, a planar circular installation groove, to install an O-ring in the planar circular installation groove, since the arc-shaped extrusion part 100 cannot adapt to the contour of the planar circular installation groove and cannot match the curvature of the circular installation groove during the rolling process of the arc-shaped extrusion part 100, it is not convenient to use. Therefore, in this embodiment, the plane where the arc-shaped extrusion part is located is bent along the extension direction of the installation groove.

[0082] Specifically, the entire installation tool 1 can be changed according to the shape of the planar circular installation groove. The entire O-ring installation tool 1 can be bent along the arc of the planar circular installation groove. That is to say, at least the arc-shaped extrusion part has the same curvature as the arc of the planar circular installation groove. As Figure 10 shown in

[0083] When in use, hold the handle 200 by hand. Also, place one end of the extrusion tip against the O-ring. Then, hold the handle and rotate it by hand so that the extrusion tip can roll along the arc of the planar circular installation groove. Its first inclined surface 121 pushes the contacted O-ring into the planar circular installation groove. By using the O-ring installation tool 1 to roll and extrude along the planar circular installation groove multiple times, the entire O-ring can be installed into the planar circular installation groove.

[0084] In this embodiment, only the structural features different from those of the first embodiment are described, and the description of the same structural features is omitted.

[0085] Third Embodiment

[0086] According to the third embodiment of the present invention, as Figure 11 shown, the arc-shaped base 110 is 360°, and the arc-shaped base forms a complete circular roller shape with a central rotating shaft. Correspondingly, the arc-shaped extrusion part is located at the arc-shaped outer edge of the arc-shaped base and also forms a complete circular extrusion tip. The handle is connected to the central rotating shaft of the arc-shaped base instead of the arc-shaped inner side of the arc-shaped base. Thus, by holding and pushing the handle, the arc-shaped base can be pushed to roll a complete circle. And by pushing the handle, the arc-shaped base can roll continuously, so that the O-ring can be continuously extruded, and the extrusion efficiency of the arc-shaped base can be improved.

[0087] In this embodiment, only the structural features different from those of the first embodiment are described, and the description of the same structural features is omitted.

[0088] Fourth Embodiment

[0089] According to the fourth embodiment of the present invention, as Figure 12 shown, the O-ring installation tool may include three arc-shaped extrusion parts 100 connected evenly in the circumferential direction. The arcs of the three arc-shaped extrusion parts 100 are all 120°. However, the sizes of the extrusion tips 120 of the three arc-shaped extrusion parts 100 are different and can be three structures respectively adapted to small O-rings, medium O-rings, and large O-rings. That is to say, among the three arc-shaped extrusion parts 100, there is a form of extrusion tip corresponding to Figure 3 A, there is a form of extrusion tip corresponding to Figure 3 B, and there is a form of extrusion tip corresponding to Figure 3The form of the extrusion tip of C. Moreover, the joints of the three extrusion tips 120 are transitioned by the gradual change of the sharp corners of the extrusion tips.

[0090] According to Figure 12 It can be seen that since the O-ring installation tool removes the handle 200, the arc-shaped extrusion part 100 is directly used as the position for holding. For example, when using an arc-shaped extrusion part 100 to extrude the O-ring, the arc-shaped extrusion part opposite to the arc-shaped extrusion part 100 can be held by hand, that is, the arc-shaped extrusion part that does not contact the installation groove is used as the handle. Of course, when using this structure, when the arc-shaped extrusion part rolls to the joint, it will be affected due to the different sizes of adjacent extrusion tips, but it can be stopped at the affected position, and then the arc-shaped extrusion part can be rolled repeatedly like this.

[0091] Or it can also be an O-ring installation tool that only includes two arc-shaped extrusion parts with a radian of π, which can be determined according to the O-ring models often used. For example, if large and medium-sized O-rings are often used, the arc-shaped extrusion parts corresponding to these two types of O-rings can be combined into an installation tool.

[0092] Or it can also be an O-ring installation tool that only includes one arc-shaped extrusion part with a radian of 2π, that is, the extrusion tips 120 are of the same size throughout the entire circumference, which is also possible.

[0093] In this embodiment, only the structural features different from those of the first embodiment are described, and the description of the same structural features is omitted.

[0094] As described above, although the description has been made with reference to the preferred embodiments of the present invention, those of ordinary skill in the art should understand that various modifications and deformations can be made to the combination of components according to the embodiments of the present invention without exceeding the technical idea and scope of the present invention described in the claims.

Claims

1. An O-ring installation tool, characterized in that, it includes: An arc-shaped extrusion part, and the arc-shaped extrusion part includes: An arc-shaped base with a radian; and An extrusion tip, which is formed by the intersection of two side slopes fixed along the outer arc edge of the arc-shaped base, and the cross-section of the extrusion tip is a sharp angle. The extrusion tip is used to push and extrude the O-ring into the installation groove through its side slopes; and A handle, which is connected to the arc-shaped base.

2. The O-ring installation tool according to claim 1, characterized in that, the radian range of the arc-shaped base is π / 2 to 3π / 2.

3. The O-ring installation tool according to claim 1, characterized in that, the extrusion tip is detachably installed on the arc-shaped base.

4. The O-ring installation tool according to claim 3, characterized in that, an embedding groove is provided on the outer arc edge of the arc-shaped base, and the extrusion tip has a protrusion for embedding into the embedding groove. Through the cooperation of the protrusion and the embedding groove, the detachable connection between the extrusion tip and the arc-shaped base is realized.

5. The O-ring installation tool according to claim 1, characterized in that, there are reinforcing ribs on the inner arc of the arc-shaped base.

6. The O-ring installation tool according to claim 1, characterized in that, the material of the extrusion tip is one of nylon and resin.

7. The O-ring installation tool according to claim 1, characterized in that, the end of the sharp angle adopts an arc transition.

8. The O-ring installation tool according to claim 1, characterized in that, the arc-shaped extrusion part is bent along the extension direction of the installation groove.

9. The O-ring installation tool according to claim 1, characterized in that, the arc-shaped base is a circle with a central rotating shaft, and the handle is connected to the central rotating shaft.

10. The O-ring installation tool according to claim 1, characterized in that, there are multiple arc-shaped extrusion parts, and the sharp angle angles of each arc-shaped extrusion part are different.

11. The O-ring installation tool according to claim 1, characterized in that, the arc-shaped extrusion part is circular, and the arc-shaped extrusion part that does not contact the installation groove serves as the handle.

12. An O-ring installation method, characterized in that, using the O-ring installation tool according to any one of claims 1 to 11 to install the O-ring into the installation groove, wherein, the extrusion tip rolls along the installation groove through the arc-shaped base, so that one of the side slopes pushes and extrudes the O-ring into the installation groove, or, the extrusion tip vertically extrudes the O-ring into the installation groove, and the vertical extrusion means that the plane where the O-ring installation tool is located is perpendicular to the top surface of the installation groove for extrusion, so that one of the side slopes pushes and extrudes the O-ring into the installation groove, or, the extrusion tip obliquely extrudes the O-ring into the installation groove, and the oblique extrusion means that the plane where the O-ring installation tool is located is inclined to the top surface of the installation groove for extrusion, so that one of the side slopes pushes and extrudes the O-ring into the installation groove, or, The extrusion tip flips to extrude the O-ring into the installation groove, and the flipping extrusion means that the plane where the O-ring installation tool is located flips towards the installation groove, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove.

13. The O-ring installation method according to claim 12, wherein, the extrusion tip rolls along the installation groove through the arc-shaped base, so that one of the side inclined surfaces pushes and extrudes the O-ring into the installation groove, including: leaning one end of the arc-shaped extrusion part against the O-ring, so that the extrusion tip contacts the side of the O-ring away from the installation groove, and then during the process of rolling an arc length by the arc-shaped base, the side inclined surface pushes and extrudes the newly contacted O-ring until the other end of the arc-shaped extrusion part contacts the O-ring, thereby extruding the O-ring contacted by one arc length into the installation groove, and extruding the contacted O-ring into the installation groove through at least one roll of the arc-shaped base until it rolls one week along the circumference of the installation groove, thereby pushing and extruding the entire O-ring into the installation groove.

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