JP2007231666A - Lock structure of slide bar body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock structure of a slide bar body, which has a simple structure, enables the bar body to be securely in a lock state, and is extremely easily unlocked. <P>SOLUTION: A circular insertion hole 3 is formed in a base 1 and the bar body 2 with a circular cross section having a diameter slightly smaller than a hole diameter of the insertion hole 3 is slidably inserted into the insertion hole 3. A support part 4 is formed around the insertion hole 3. A lock ring 5 provided with a through hole 6 which communicates with the insertion hole 3 and has the same shape as that of the insertion hole 3 is rotatably supported on the support part 4. By rotatably operating the lock ring 5 relative to the support part 4, a shape of either one of the support part 4 and the through hole 6, or both shapes of them are set in such a way that positional relation between the through hole 6 and the insertion hole 3 is changed from a positional relation allowing center of the through hole 6 to coincide with center of the insertion hole 3 to a positional relation allowing the center of the through hole 6 to be in an eccentric position relative to the center of the insertion hole 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a slide bar lock structure that controls a bar that is slidably movable relative to a base so that the bar can be locked and unlocked.

  Conventionally, a rod has been slidably provided on a base body, and various structures have been used in various fields in which some action can be achieved by sliding the rod body. There are various lock structures for positioning and locking in an incapable sliding state at an arbitrary position.

  For example, in a drainage valve for underdrains disclosed in Japanese Patent Application Laid-Open No. 2001-107347 (Patent Document 1), an operating rod having a valve body at the lower end is disposed in a standing pipe connected to the drainage pipe. Is configured to be slidably inserted into the protection box bottom plate (base) at the top of the standing pipe, and by opening and closing the operation rod with respect to the protection box bottom plate, the valve body moves up and down to open and close the drain pipe. ing.

  In addition, a cylindrical portion having a threaded outer peripheral surface is formed in the central portion of the protective box bottom plate, and the operating rod is slidably mounted through the cylindrical portion, and a fixing cap screwed to the cylindrical portion is tightened. A lock structure is disclosed that, when screwed in the attaching direction, positions and locks the operating rod with respect to the bottom plate of the protective box so that it cannot slide at any position.

JP 2001-107347 A

  The present invention relates to an improvement in the lock structure of this kind of slide rod body, and it is an epoch-making that the rod body can be reliably locked in a simple structure and the lock / unlock operation can be performed very easily. It provides a lock structure for a simple slide bar.

  The gist of the present invention will be described with reference to the accompanying drawings.

  1. A slide bar lock structure that enables locking / unlocking of a slide body 2 that is slidably movable relative to a base body 1. The base body 1 is provided with a circular insertion hole 3, and the insertion hole 3, the rod body 2 having a circular cross section slightly smaller than the diameter of the insertion hole 3 is slidably inserted, and a support portion 4 is provided around the insertion hole 3. A lock ring 5 that communicates with the hole 3 and has a through hole 6 having the same shape as the insertion hole 3 is rotatably supported. By rotating the lock ring 5 with respect to the support portion 4, the through hole is formed. The positional relationship between the through hole 6 and the insertion hole 3 is such that the center of the through hole 6 and the center of the insertion hole 3 coincide with each other. Either the support part 4 or the through-hole 6 may be changed to Is configured so that the rod 2 is slidable with respect to the base 1 at the rotational position of the lock ring 5 where the center of the through hole 6 and the center of the insertion hole 3 coincide with each other. At the rotational position of the lock ring 5 in which the center of the hole 6 is eccentric with respect to the center of the insertion hole 3, the inner edge of the through hole 6 and the inner edge of the insertion hole 3 are pressed against the rod body 2, and the rod body 2 is slide-locked. The present invention relates to a slide bar lock structure characterized by being configured to be in a state.

  Further, a ring-shaped or C-shaped projection 4 is provided around the insertion hole 3 and this projection 4 is used as the support 4, and the lock ring 5 is fitted and supported in the support 4. The lock ring 5 is provided so as to be horizontally rotatable with the guide 4 as a guide, and the inner edge of the ring-shaped or C-shaped support part 4 is not formed on the inner edge concentric with the insertion hole 3, but is eccentric with respect to the insertion hole 3. The through hole 6 of the lock ring 5 is not formed as a hole concentric with the inner edge of the ring-shaped or C-shaped support portion 4, but is eccentric with respect to the inner edge of the support portion 4. The inner edge of the support part 4 is formed in the insertion hole 3 and an eccentric circular inner edge, and the through hole 6 is formed in an eccentric circular hole with respect to the inner edge of the support part 4. Then, the lock ring 5 is rotated with respect to the support portion 4. Thus, since the positional relationship between the through hole 6 and the insertion hole 3 is such that the center of the through hole 6 and the center of the insertion hole 3 coincide with each other, the center of the through hole 6 is relative to the center of the insertion hole 3. 2. The slide bar body locking structure according to claim 1, wherein the structure is changed to a positional relationship existing in an eccentric position.

  Since the present invention is configured as described above, a slide having a simple structure excellent in operability capable of reliably locking and unlocking the rod body with respect to the base body by simple operation simply by rotating the lock ring. It becomes a rod lock structure.

  Further, in the invention according to the second aspect, the slide bar body has a lock structure with a simpler configuration and a more practical configuration that reliably exhibits the functions and effects.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  When the lock ring 5 is rotated with respect to the support portion 4 so that the center of the through hole 6 and the center of the insertion hole 3 coincide with each other, the lock ring 5 is inserted into the through hole 6 and the insertion hole 3. Since the rod body 2 is slightly smaller in diameter than the through hole 6 and the insertion hole 3, the rod body 2 is slidable relative to the base body 1 along the through hole 6 and the insertion hole 3.

  When it is desired to position the rod body 2 at an arbitrary position, the lock ring 5 is rotated with respect to the support portion 4 so that the center of the through hole 6 and the center of the insertion hole 3 are slidably moved. When the center of the through-hole 6 is changed to a positional relationship in which it is in an eccentric position with respect to the center of the insertion hole 3, the hole edge of the through-hole 6 and the hole edge of the insertion hole 3 come into pressure contact with the rod body 2. Is in the slide lock state.

  Therefore, since the sliding movement of the rod 2 with respect to the base body 1 can be reliably locked / unlocked by a simple operation of simply rotating the lock ring 5 in this way, the operability is extremely excellent.

  Moreover, in the present invention, the support portion 4 is provided around the insertion hole 3 of the base body 1, and the lock ring 5 is rotatably supported on the support portion 4, and the support portion 4 or the through-hole of the lock ring 5 is provided. 6, or both the shape of the support portion 4 and the through-hole 6, the positional relationship between the through-hole 6 and the insertion hole 3 by the rotation operation of the lock ring 5 is such that the center of the through-hole 6 and the insertion hole This configuration is simple because it can be realized by changing the position of the center of the through hole 6 to the position of the eccentric position with respect to the center of the insertion hole 3 from the position relationship with the center of the three holes. It is a configuration that can be designed, and is excellent in mass productivity.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment relates to a lock structure of the rod body 2 that controls the slide movement of the rod body 2 that is slidably movable relative to the base body 1 so as to be able to be locked and unlocked.

  Specifically, the base body 1 is provided with a circular insertion hole 3, and the insertion hole 3 is configured so that the rod body 2 having a circular cross section slightly smaller in diameter than the insertion hole 3 can be inserted. A lock ring provided with a support 4 around the insertion hole 3 and having a through-hole 6 having the same shape as the insertion hole 3 through which the rod 2 is inserted and communicated with the insertion hole 3. 5 is configured to be rotatably supported.

  More specifically, the base body 1 has a flat surface portion, and the circular circular insertion hole 3 is provided in the flat surface portion of the base body 1 in a vertically penetrating state.

  The base body 1 is provided with a C-shaped protrusion 4 (curved protrusion) having a circular shape so as to surround the insertion hole 3 around the insertion hole 3. 4 is the support portion 4.

  The lock ring 5 is integrated with an L-shaped operation lever 5B that protrudes sideways and then protrudes upward on the side of a right circular ring portion 5A that can be fitted and disposed in the C-shaped support portion 4. It is configured in a protruding shape. Further, the through hole 6 of the ring portion 5 </ b> A is formed as a regular circular hole having the same diameter as the insertion hole 3.

  The lock ring 5 is configured such that the operation lever 5B is disposed in the opening portion of the support portion 4 when the ring portion 5A is fitted and supported in the support portion 4 so as to overlap the base portion 1. By operating the operation lever 5B to move in the horizontal direction with respect to the flat portion of the base 1, the lock ring 5 is provided so as to be horizontally rotatable with respect to the support 4 within the opening range of the opening of the support 4.

  In this embodiment, by rotating the lock ring 5 with respect to the support portion 4, the positional relationship between the through hole 6 and the insertion hole 3 is such that the center of the through hole 6 and the center of the insertion hole 3 are the same. The support part 4 or the through-hole 6 is configured so that the center of the through-hole 6 changes from the coincident positional relationship to a positional relationship existing in an eccentric position with respect to the center of the insertion hole 3.

  More specifically, the inner edge of the C-shaped support portion 4 is not formed concentrically with the insertion hole 3, but is formed in an eccentric circular shape having a center at a position slightly deviated from the center of the insertion hole 3. The through-hole 6 of the lock ring 5 is not formed concentrically with the outer shape (a regular circle) of the lock ring 5, but is formed in an eccentric circular shape with the center being slightly deviated from the center of the outer circle of the lock ring 5. By forming and rotating the lock ring 5 with respect to the support portion 4, the lock ring 5 rotates with respect to the base body 1 while the position of the through hole 6 changes with respect to the position of the insertion hole 3. It is said.

  Further, in this embodiment, when the operation lever 5B of the lock ring 5 is positioned at the rotation limit position in the one side direction by the opening of the support portion 4, the position of the through hole 6 and the insertion hole 3 is determined. The relationship is such that the center of the through hole 6 and the center of the insertion hole 3 coincide (refer to FIGS. 1A and 2A). From this state, the operation lever 5B is rotated in the other direction. When the moving operation is performed, the degree of eccentricity increases as the center of the through-hole 6 gradually changes to a positional relationship where the center of the through-hole 6 becomes eccentric with respect to the center of the insertion hole 3, and the operation lever 5B is limited to turn in the other direction. When the position is reached, the eccentric relationship of the inner edge of the support portion 4 is such that the minimum diameter K (see FIG. 2B) of the communicating portion between the insertion hole 3 and the through hole 6 is smaller than the outer diameter of the rod body 2. And the eccentric relationship between the through holes 6 are set. Even when the minimum diameter K is the same as the outer diameter of the rod 2 when the operation lever 5B is rotated to the rotation limit position in the other direction, the slide lock state described later is achieved. However, as in this embodiment, it is preferable to configure the rod body 2 to have a smaller diameter than the outer shape of the rod body 2 in order to realize a reliable slide lock state.

  That is, when the operation lever 5B located at the rotation limit position in one side direction is rotated in the other direction, the degree of eccentricity between the through hole 6 and the insertion hole 3 gradually increases, so that the inner edge ( The predetermined portion of the hole edge) and the predetermined portion of the inner edge (hole edge) of the insertion hole 3 are in contact with the rod body 2 (the opposite edge at the position of the minimum diameter K of the communication portion between the insertion hole 3 and the through hole 6). Then, the rod body 2 is sandwiched, and the hole edge portion of the through hole 6 and the hole edge portion of the insertion hole 3 that are in contact with the rod body 2 by rotating the operation lever 5B further with respect to the rod body 2 The degree of pressure contact is gradually increased, and when the operation lever 5B reaches the rotational limit position in the other direction, a predetermined portion of the inner edge (hole edge) of the through hole 6 and the inner edge (hole edge) of the insertion hole 3 ) Strongly pressed against the rod body 2 (see FIG. 1B and FIG. 2B) and the rod body 2 is in a non-slidable state. Location is determined (the slide lock state) has a configuration.

  Therefore, in the rotation position of the lock ring 5 in which the operation lever 5B is rotated in the most lateral direction so that the center of the through hole 6 and the center of the insertion hole 3 coincide with each other, it has the same shape as the insertion hole 3. The rod body 2 having a diameter smaller than that of the through hole 6 is slidably movable with respect to the base body 1 (the through hole 3) and the lock ring 5 (the through hole 6), and the operation lever 5B is rotated to the other side. At the rotational position of the lock ring 5 in which the center of the through hole 6 is eccentric with respect to the center of the insertion hole 3, the inner edge of the through hole 6 and the inner edge of the insertion hole 3 are pressed against the rod body 2. The body 2 is configured to be in a slide lock state.

  The lock structure can be realized by making only one of the inner edge of the support portion 4 and the through hole 6 an eccentric circular shape, but both the inner edge of the support portion 4 and the through hole 6 are eccentric as in the present embodiment. By setting it as a circular shape, the shaft center of the rod body 2 and the center of the insertion hole 3 substantially coincide with each other in the slide lock state. That is, it is possible to realize a locked state in which the rod body 2 is not largely displaced laterally with respect to the base body 1 when locked.

  Further, in this embodiment, as shown in FIGS. 3 and 4, a through hole 7 </ b> A that is a circular shape and passes through the rod 2 at the center is formed at the upper part of the support part 4, and the outer periphery of the support part 4 at the peripheral part. A cap body 7 having a hanging portion 7B arranged along the surface is fitted and mounted, and the lock body 5 is held upward by the cap body 7 so as not to come off.

  In addition, the cap body 7 has a configuration in which a part of the hanging portion 7B at the peripheral edge is cut out by approximately the same width as the opening width of the opening of the support portion 4, and the operation lever 5B protrudes from the cutout portion 7C. The cap body 7 does not hinder the turning operation of the operation lever 5B.

  5 and 6 show an example of use of this embodiment. In a water tank 10 (underdrain drainage valve) that opens and closes a culvert pipe 8 installed in a field, This is a case where it is applied to a positioning lock structure. In the figure, reference numeral 9 is a trough and 15 is a drain.

  More specifically, in the water tank 10, a valve body 12 is disposed in a lower part of a standing pipe 11 embedded in an upright state so as to be movable up and down. A rod-shaped operating rod 2A is projected, and a T-shaped operating handle 13 is projected on the upper portion of the operating rod 2A. By moving the operating handle 13 up and down, In the lower part, the valve body 12 moves up and down so that the drain pipe 14 connected to the underdrain pipe 8 can be controlled to open and close.

  In addition, a flat guide plate 1A is provided near the upper opening of the standing tube 11, and a circular insertion hole 3 is provided in the center of the guide plate 1A to guide the sliding movement through the operation rod 2A. It is formed through.

  In this embodiment, the guide plate 1A is used as the base 1, the support portion 4 is provided around the central insertion hole 3, the lock ring 5 is supported by the support portion 4, and the operating rod 2A is attached to the rod body. 2 is configured to be inserted into the insertion hole 3, and the operation lever 5B is operated to make the operation rod 2A slidable with respect to the guide plate 1A. The valve body 12 can be positioned and fixed in the water-stopped state and the water-drained state by operating the operation lever 5B to bring the operating rod 2A into the slide lock state with respect to the guide plate 1A. It is configured.

  Note that the present invention is not limited to the present embodiment, and the specific configuration and application of each component can be appropriately designed.

It is explanatory perspective view which shows a present Example. It is a description plane sectional view which shows a present Example. It is a description exploded perspective view of a present Example. It is explanatory side sectional drawing which shows a present Example. It is a schematic explanatory perspective view which shows the usage example of a present Example. It is a schematic explanatory sectional side view which shows the usage example of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base body 2 Rod body 3 Insertion hole 4 Support part (projection part)
5 Lock ring 6 Through hole

Claims (2)

  A lock structure of a slide bar body that enables locking and unlocking of a slide movement of a bar body that is slidable relative to a base body, wherein a circular insertion hole is provided in the base body, and the insertion hole is inserted into the insertion hole. A rod having a circular cross section slightly smaller than the hole diameter is slidably inserted, and a support portion is provided around the insertion hole. The support portion communicates with the insertion hole and has the same shape as the insertion hole. The lock ring having the through hole is rotatably supported, and the lock ring is rotated with respect to the support portion, so that the positional relationship between the through hole and the insertion hole is inserted from the center of the through hole. Set the shape of one or both of the support part and the through hole so that the center of the through hole changes from the position where the center of the hole coincides with the center of the through hole to an eccentric position. Through the center of the through hole When the lock ring is in the rotational position where the center of the lock ring coincides, the rod body is slidable with respect to the base body. A slide rod body locking structure, wherein the inner edge of the hole and the inner edge of the insertion hole are pressed against the rod body so that the rod body is in a slide lock state. A ring-shaped or C-shaped protrusion is provided around the insertion hole, and this protrusion is used as the support. The lock ring is fitted and supported in the support, and the lock ring is rotated horizontally with the support as a guide. The inner edge of the ring-shaped or C-shaped support portion is not formed on the inner edge that is concentric with the insertion hole, but is formed on the inner edge that is eccentric with respect to the insertion hole, or the lock ring The through hole is not formed as a hole concentrically with the inner edge of the ring-shaped or C-shaped support part, but is formed as an eccentric circular hole with respect to the inner edge of the support part, or the inner edge of the support part is formed as the insertion hole. And forming the through hole in an eccentric circular shape with respect to the inner edge of the support portion, and rotating the lock ring with respect to the support portion to thereby form the through hole. And the positional relationship between the insertion hole and 2. The structure according to claim 1, wherein the center of the through hole changes from the positional relationship in which the center of the through hole coincides with the center of the through hole to a positional relationship in which the center of the through hole is in an eccentric position with respect to the center of the through hole. Lock structure of the slide bar body.

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