JPH051067U - Puckkin dropout prevention member - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the packing from falling off. A packing detachment prevention member for preventing a packing 5 accommodated in a groove 4 formed on the outer peripheral side of the hollow portion 3 from falling into the hollow portion 3,
It has an annular shape having a size that abuts on the inner peripheral surface thereof and has a width smaller than the depth of the groove 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a packing falling-off prevention member, and in particular, the packing does not fall into a hollow part or the like. The present invention relates to a packing disengagement prevention member that prevents falling.

[0002]

[Prior Art and Problems to be Solved]

  Conventionally, as a packing that seals between one member and the other member, O phosphorus is used. Gu is known.

[0003]   In addition, as shown in FIG. 7, when the hollow portion 33 is provided on the one member 31 side. In this case, a groove 34 is provided on the outer peripheral side of the hollow portion 33, and a packing 35 is arranged in the groove 34. It is arranged to seal between one member 31 and the other member 32.

[0004]   However, when the inside of the hollow portion 33 is in a negative pressure state for some reason, it is shown in FIG. As described above, the packing 35 is sucked into the hollow portion 33, There is a problem that it falls off to the empty portion 33 side.

[0005]   Therefore, conventionally, as shown in FIG. 9, an inner wall 46 is provided between the groove 44 and the hollow portion 43. The inner wall 46 is provided to prevent the packing 45 from falling off.

[0006]   However, it is unnecessary to provide an inner wall 46 between the groove 44 and the hollow portion 43. In some cases, the packing 45 cannot be removed. It had a problem that it could not be stopped.

[0007]   This invention solves the above-mentioned problems of the conventional one, and It is possible to prevent the packing from falling off without providing an inner wall between the hollow part and the hollow part. An object of the present invention is to provide a packing falling-off preventing member.

[0008]

[Means for Solving the Problems]

  In order to achieve the above-mentioned object, the present invention uses a groove formed on the outer peripheral side of the hollow portion. Packing dropout prevention to prevent the stored packing from falling out inside the hollow part A member having an annular shape having a size that abuts on the inner peripheral surface of the packing, and has a width Is smaller than the depth of the groove.   Also, the packing accommodated in the groove formed on the outer peripheral side of the hollow portion is A packing falling-off preventing member for preventing the packing from falling inside, It has an annular shape that contacts the surface, and its width is smaller than the depth of the groove. Between the main body of the packing fall prevention member and the inner surface of the main body of the packing fall prevention member. This means adopts a means formed of a reinforcing portion continuously provided.

[0009]

[Action]

  This invention adopts the above-mentioned means, so that the groove provided on the outer peripheral side of the hollow portion is By arranging the packing dropout prevention member on the inner peripheral side of the packing arranged in It is possible to prevent the packing from falling into the hollow portion.

[0010]

【Example】

  An embodiment of the present invention shown in the drawings will be described below.   FIG. 1 shows a first embodiment of a packing dropout prevention member according to the present invention. The packing drop-out prevention member 6 has an annular shape, and the cross-sectional shape is concave on the outer peripheral side. It has an elliptical shape and is made of resin or metal.

[0011]   In addition, the width of the packing detachment prevention member 6 in the axial direction is the same as that of the It is formed to be smaller than the depth of the groove 4 in which the kin 5 is arranged, and the outer diameter is a fall prevention target. The packing 5 is formed to have a size almost equal to the inner diameter of the packing 5, and the shape of the outer circumference is a fall prevention target. It corresponds to the shape of the inner peripheral surface of the packing 5, and in this embodiment, Is curved in accordance with the circular cross section.

[0012]   The packing disengagement prevention member 6 configured as described above is hollow as shown in FIG. A seal is provided between one member 1 provided with the portion 3 and the other member 2 which is a mating member. It is used to prevent the packing 5 from falling off.

[0013]   That is, the one member 1 is provided with a hollow portion 3 having a circular opening. An annular groove 4 is provided on the outer peripheral edge of the void 3.   An annular packing 5 called an O-ring is arranged in the groove 4. The packing detachment prevention member 6 is in a state where the outer peripheral surface is in contact with the inner peripheral side of the packing 5. It is arranged in.

[0014]   Moreover, since the packing 5 is used with a predetermined crushing allowance, When arranged in the groove 4, the peripheral surface of the packing 5 is from the upper surface of the one member 1. It is in a protruding state.

[0015]   Then, with the packing 5 arranged in the groove 4 of the one member 1 as described above, When the upper surface of the one member 1 is brought into contact with the lower surface of the other member 2, the packing 5 is removed. It is crushed between one member 1 and the other member 2 so that the space between the two members 1 and 2 is To

[0016]   The outer diameter of the packing detachment prevention member 6 is approximately the same as the inner diameter of the packing 5. Since it is formed by the method, when it is arranged on the inner peripheral side of the packing 5, the packing The packing 5 is crushed between the members 1 and 2 and the packing 5 extends in the radial direction. The packing disengagement prevention member 6 presses the packing 5 outward and disengages it into the hollow portion 3. Prevent from doing.

[0017]   FIG. 3 shows a second embodiment of the packing dropout prevention member according to the present invention. , The packing disengagement prevention member 16 has an annular shape and a rectangular cross section, It is made of resin or metal.

[0018]   In addition, the width of the packing drop-off prevention member 16 in the axial direction is the same as the width of the pad that is the drop-off prevention target. The outer diameter is formed to be smaller than the depth of the groove 14 in which the packing 15 is disposed The packing 15 is formed to have a size almost equal to the inner diameter of the packing 15, and the shape of the outer circumference is The shape corresponds to the shape of the inner peripheral surface of the packing 15, which is an elephant. In the example, a square shape is formed according to the shape of the annular packing 15 having a square cross section. Has become.

[0019]   The packing disengagement prevention member 16 configured as described above is A pad that seals between the one member 11 and the other member 12 provided with the empty portion 13 is provided. It is used to prevent the kin 15 from falling off.

[0020]   That is, the one member 11 is provided with a hollow portion 13 having a circular opening. An annular groove 14 is provided on the outer peripheral edge of the hollow portion 13.   The groove 14 has a rectangular cross-section and an annular packing 1 5 is provided, and the packing drop-out preventing member 16 is provided on the inner peripheral side of the packing 15 and The peripheral surfaces are arranged in contact with each other.

[0021]   Also, since the packing 15 is used with a predetermined crushing allowance, the packing 15 When the packing is arranged in the groove 14, the packing 15 has a peripheral surface of the one member 11 Is protruding from the upper surface of.

[0022]   The packing 15 is provided in the groove 14 of the one member 11 as described above. In this state, when the upper surface of one member 11 is brought into contact with the lower surface of the other member 12, the pad The kin 15 is crushed between the member 11 on the one hand and the member 12 on the other hand, The materials 11 and 12 are sealed.

[0023]   In addition, the outer diameter of the packing detachment prevention member 16 is almost equal to the inner diameter of the packing 15. And the packing 15 is pressed between the two members 11 and 12. When the packing 15 is rubbed, the packing 15 extends in the radial direction, and thus the packing detachment preventing member 1 6 presses the packing 15 outwardly and prevents it from falling into the hollow portion 13.

[0024]   In addition, as shown in FIG. 5, when the packing 17 having a circular cross-sectional shape is prevented from falling off, In this case, the packing dropout prevention member 16 having a square cross section can be used.   Therefore, the shape of the outer peripheral surface of the packing dropout prevention member must be the same as the shape of the inner peripheral surface of the packing. Even if it does not fit all, the packing dropout prevention member can be used. Needless to say.

[0025]   FIG. 6 shows a third embodiment of the packing falling-off preventing member according to the present invention. The packing disengagement prevention member 18 is a ring-shaped packing disassembly prevention member main body 20. The reinforcing portion 19 is continuously provided over the inner peripheral surface and is integrally formed of resin or metal. .

[0026]   The axial width of the packing drop-off prevention member 18 is the The outer diameter is smaller than the depth of the groove in which the packing is placed, and the outer diameter of the It is formed to have almost the same size as the inner diameter of the packing.

[0027]   The packing disengagement prevention member 18 configured as described above is the same as in the first and second embodiments. Similarly, a packing that seals between one member provided with a hollow portion and the other member. To prevent it from falling off.   Further, a reinforcing portion 19 is provided on the inner peripheral side of the packing disengagement prevention member 18. Therefore, the strength of the packing detachment prevention member 18 is improved.

[0028]

[Effect of device]

  This invention is configured as described above, so that one part where the packing is arranged is There is no extra space for the inner wall between the groove and the hollow part of the material. Even if the packing is not installed, this packing fall-out prevention member should be installed on the inner peripheral side of the packing. By using, it is possible to easily prevent the packing from falling off.   In addition, the shape of the outer peripheral surface of the packing dropout prevention member is changed according to the shape of the packing. This makes it possible to prevent all packings from falling off.   Furthermore, by providing a reinforcing portion on the inner peripheral side of the packing dropout prevention member, this packing It has an excellent effect that the strength of the sticking-off preventing member is improved.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a first embodiment of a packing detachment preventing member according to the present invention.

FIG. 2 is a schematic cross-sectional view showing a state in which a packing dropout prevention member is arranged on the inner peripheral side of the packing in the first embodiment of the packing dropout prevention member according to the present invention.

FIG. 3 is a schematic cross-sectional view showing a second embodiment of the packing detachment preventing member according to the present invention.

FIG. 4 is a schematic cross-sectional view showing a state in which a packing dropout prevention member is arranged on the inner peripheral side of the packing in the second embodiment of the packing dropout prevention member according to the present invention.

FIG. 5 is a schematic cross-sectional view showing a state in which a packing dropout prevention member is arranged on the inner peripheral side of another type of packing in the second embodiment of the packing dropout prevention member according to the present invention.

FIG. 6 is a schematic plan view showing a third embodiment of the packing detachment preventing member according to the present invention.

FIG. 7 is a schematic cross-sectional view showing a state in which packing is arranged between one member provided with a hollow portion and the other member.

FIG. 8 is a schematic plan view showing a state in which the packing has fallen out of a groove provided in one member.

FIG. 9 is a schematic cross-sectional view showing a state in which an inner wall is provided between the hollow portion and the groove to prevent the packing from falling off.

[Explanation of symbols]

1, 11, 31, 41 ... One member 2, 12, 32, 42 ... the other member 3, 13, 33, 43 ... Hollow part 4, 14, 34, 44 ... Groove 5, 15, 17, 35, 45 ... packing 6, 16, 18 ... Packing dropout prevention member 19 ... Reinforcement part 20 ...... Packing dropout prevention member body 46 …… Inner wall

Claims (2)

[Scope of utility model registration request] 1. A packing (5) housed in a groove (4) (14) formed on the outer peripheral side of a hollow portion (3) (13).
(15) (17) is a packing falling-off preventing member for preventing the packing (5) (15) (17) from falling off into the hollow parts (3) (13). The groove (4) (14) has an annular shape having a contact size and a width.
Is smaller than the depth of the packing. 2. A packing (5) housed in a groove (4) (14) formed on the outer peripheral side of the hollow portion (3) (13).
(15) (17) is a packing falling-off preventing member for preventing the packing (5) (15) (17) from falling off into the hollow parts (3) (13). The groove (4) (14) has an annular shape having a contact size and a width.
And a reinforcing portion (19) continuously provided between the inner surfaces of the packing drop-off prevention member main body (20) and the packing drop-off prevention member main body (20). A packing dropout prevention member.