JPH068321Y2 - Cylinder clamp device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a four-way switching valve used in, for example, a refrigeration cycle, in which a cylindrical object clamp is used when the pilot valve is attached to the valve body. It relates to the device.

[Prior Art] Conventionally, as a clamp device of this type, for example, the actual open sho 60
There was a clamping device disclosed in -34107.

This conventional clamp device will be briefly described with reference to FIGS. 3 to 4. A bracket (23) whose cross section is bent in a concave shape on the front side, and a cover (36) which is formed in a reverse concave shape on the side surface.
And the bracket (23) is a bottom plate portion (24).
Side plates (25) are provided on both sides of the holding recess (2) for fitting and supporting the lower half of the non-sandwiched object (22) on the side plates (25).
6) is provided, and engaging projections (3) are provided on both sides of the side plate (25).
1) is projectingly provided, and an inclined surface portion (3
2) is formed, and an engaging shoulder portion (33) is formed following the inclined surface portion 32.

The cover (36) is fitted on the bracket (23) while being expanded along the inclined surface portion (32) of the bracket (23). The upper wall (3
8) Side plates (37) are provided on both sides of the side plate (37), and the inclined surface portions (32) are slid on both ends of the side plates (37) on both sides to engage shoulders of the engagement protrusions (31) (31). Notches (34) and (34) are provided to engage with (33).

In addition, near both ends of the upper wall surface (38) of the cover (36),
Inward projections (4
2) is formed so as to bulge out, and a pressing piece (43) having a tapered lower portion is horizontally foldable above the both ends of the side plates (37) on both sides so that the window hole (44) can be bent horizontally. It is formed by cutting and raising.

Then, the pilot valve (2
When clamping 2), the lower half of the pilot valve (22) is fitted into the holding recess (26) of the bracket (23), and the cover (36) is sandwiched by the pilot valve (22).
Is pushed toward the bracket (23), the engaging protrusions (31) (31) of the cover (36) are engaged with the bracket (2).
Engaging shoulder portion (33) over the inclined surface portion (32) of 3)
Engaging with and temporarily fixing, and then the cover (36)
By bending each holding piece (43) of
Each presser piece (43) is in a state where a wedge is driven between the upper surface of the pilot valve (22) and the lower surface of the protrusion (42) formed on the upper wall surface (38), and the pilot valve is fixed. It was

[Problems to be Solved by the Invention] However, in the conventional example using the wedge type, first, the upper surface of the pilot valve, which is the object to be clamped, is pressed by each pressing piece (43). If the upper surface of the pilot valve is not substantially horizontal, the pressing effect does not occur. Therefore, not only the shape of the upper surface of the pilot valve is limited, but also the connecting pipe (45) must be bent in advance to take it out of the cover (36). In addition, the material yield of the hexagonal shape and the octagonal shape that are quadrangular becomes worse in terms of material removal.

Secondly, in order to prevent the strength of the cover (36) from being reduced by the tapered hole (44) for the pressing piece formed on the both side plates (37) of the cover (36), the length in the left-right direction is set. It has to be made long, which causes a problem that the pilot valve (22) becomes longer than necessary and hinders downsizing of the pilot valve.

In order to solve the above problems, the present invention is made by using a spring material after fitting the lower half part of a pilot valve, which is a cylindrical object, into the holding recesses (7) (9) of the bracket. When the tubular object (2) is pressed and fixed by the presser foot (13), one end of the presser foot is hooked on the locking shoulder (10) of the bracket and locked, and the upper end of the presser foot (13) is fixed. By bending the protruding piece (11) at the upper rear end of the bracket inward in a pushed-down state, the cylindrical object is held in a pressure contact state by a strong spring force.

[Means for Solving the Problems] The tubular object clamping device of the present invention is a tubular object clamping device including a bracket (4) and a presser foot (13), wherein the bracket (4) is concave in the front. The two side plates (6) and (8) are provided with holding recesses (7) and (9) having substantially the same shape as the shape of the lower half of the tubular object (2) when viewed from the side. The locking shoulder (10) is provided in a protruding shape on the front outer edge and the horizontal protruding piece (11) is provided on the upper end of the rear outer edge, while the presser foot (13) is
It is formed to have a width that fits in the both side plates (6) and (8), and is provided with overhanging pieces (14) and (14) on the left and right of the lower end of the front surface, and the side shape is substantially along the outer surface of the tubular object (2). And the upper end (15) of the elastic plate member extending to the position of the protruding piece (11) of the bracket, and the tubular member (2) in the holding recesses (7) and (9) of the bracket. After fitting, the presser foot (13) has a protruding piece (14) at the lower end of the front surface.
Is hooked on the engaging shoulder (10) so that its upper part is along the upper part of the tubular object, and the protruding piece (11) at the rear end of the bracket is bent inward with the upper end (15) being pushed down. The cylindrical object (2) is held in a pressure contact state.

In addition, the upper part of the presser foot (13) is formed wider than the width of the bracket, and a slit (16) into which the rear inner edge of the bracket fits is provided at the tip end of the presser foot (13) to form a combination of the presser foot (13) and the bracket (4). This prevents the attachment position from shifting.

In addition, a depression (17) is formed on the top of the presser foot (13), and the depression is used as the point of action of the spring force of the presser foot, and the tubular member is used as a holding recess (7) (9) for the bracket (4). It is firmly fixed to.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS.

(1) is a valve body of a four-way valve used in a refrigeration cycle or the like, and (2) is a pilot valve as a tubular member attached to the valve body (1), and has a ring-shaped groove ( 3) is provided. Although the pilot valve (2) has a hexagonal outer shape in this embodiment, it may have another polygonal shape or a round shape.

The bracket (4) is formed by bending a metal plate into a concave shape on the front side, and the bottom plate (5) thereof is integrally fixed to the valve body (1) as a mounting member by welding or the like.

The one right side plate (8) has a holding recess (9) having the same shape as the hexagonal shape of the lower half of the pilot valve (2) when viewed from the side.
Unlike the recess on the right side plate, the holding recess (7) of the other left side plate (6) engages with the ring-shaped recess groove (3) of the pilot valve (2). The groove (3) prevents the pilot valve (2) from shifting in the left-right direction.

Further, locking shoulders (10) and (10) for locking the overhanging pieces (14) and (14) of the presser foot (13) described below are obliquely downwardly provided on the front outer edges of the side plates (6) and (8). At the upper end of the rear outer edge, protruding pieces (11) (11) for holding an upper tip (15) of a presser foot (13) described later in a pressed state are horizontally provided on the upper end of the rear outer edge. It is provided so as to project outward.

On the other hand, the presser foot (13) is made of a metal elastic plate material,
As shown in FIGS. 1 (a) and 2 (a), the upper portion of the bracket is formed wider than the space between the side plates (6) and (8), and the rear inner edge of the bracket (4) is attached to the tip portion thereof. A slit (16) into which the portion fits is formed so as to prevent displacement of the assembling position of the presser foot (13) and the bracket (4). In addition, the protruding pieces (14) (1
4), the side surface shape is formed so as to substantially follow the outer surface of the object to be sandwiched (2), and the upper end (15) thereof is extended to the position of the protruding piece (11) of the bracket.

Needless to say, the slit (16) can be omitted when the presser foot (13) is formed to have a width that fits the side plates (6) and (8).

In addition, a dent (1
7) is formed so that a large spring force can be easily exerted between the locking shoulder (10) on the front side of the bracket (4) and the protruding piece (11) on the rear side with the recessed portion (17) as a fulcrum. Has become.

[Operation] In fixing the pilot valve, the lower half of the pilot valve (2) is fitted in the holding recesses (7) and (9) of the bracket (4) to move the pilot valve (2) in the left-right direction. To prevent misalignment, hook the protruding pieces (14) (14) of the presser foot (13) on the locking shoulders (10) (10) of the bracket (4) so as to sandwich the pilot valve (2). Bring the upper tip (15) of the presser foot to the protruding piece (11) (11) side of the bracket as shown in FIG. 1 (b), and strongly push the upper tip (15) downward as shown by the chain double-dashed line. In the depressed state, the tips of the projecting pieces (11) (11) are bent inward as shown in FIG. 1 (a) to fix the pilot valve (2) under pressure.

Therefore, a large spring force acts between the recessed portion (17) of the presser foot (13) as a fulcrum, between the locking shoulder (10) on the front side of the bracket (4) and the protruding piece (11) on the rear side, and the pilot valve is attached to the bracket. It can be firmly fixed to the holding recesses (7) and (9) of (4).

[Advantages of the Invention] As described above, when fixing the tubular member (2), one end of the presser foot (13) is attached to the locking shoulder (10) of the bracket (4).
Hook it on (10) and pull the other end to the rear protruding piece (11).
The tubular body (2) is fixed to the bracket by bringing it to the (11) side and bending the ends of the projecting pieces (11) and (11) inward in a state where the end portion is strongly pushed down. As a result, not only the ease of assembling the parts but also the dimensional accuracy of the parts can be greatly eased, the cost can be reduced, and the pilot valve can be fixed with the presser foot (1
Bracket (4) with the dent (17) of 3) as a fulcrum
A large spring force acts between the front locking shoulder (10) and the rear protruding piece (11) to firmly fix the pilot valve to the bracket (4).

[Brief description of drawings]

FIG. 1 shows an external view of the present invention, (a) is a perspective view,
(B) is a left side view showing an assembled state of the bracket and the presser foot. FIG. 2 is an exploded perspective view of the present invention, in which (a) is a presser foot, (b) is a cylindrical object, and (c) is a bracket fixed to the valve body. FIG. 3 is an exploded perspective view of a conventional product. FIG. 4 is a side view of the conventional product. (1) …… Valve body, (2) …… Cylinder (4) …… Bracket, (6) …… Left side plate (7) …… Retaining recess, (8) …… Right side plate (9) …… Retaining recess, (10) …… Locking shoulder (11) …… Projecting piece, (13) …… Presser foot (14) …… Overhanging piece, (15) …… Upper tip (16) …… Slit, ( 17) …… Dent part

Claims (3)

[Scope of utility model registration request] 1. A clamp device for a tubular object comprising a bracket (4) and a presser foot (13), the bracket (4)
Is formed in a concave shape on the front surface, and holding recesses (7) and (9) having the same shape as the lower half of the tubular object (2) when viewed from the side are formed in approximately the center of both side plates (6) and (8). The front and outer edges of the both side plates are provided with a locking shoulder (10) in a protruding shape and a horizontal protruding piece (11) is provided at the upper end of the rear outer edge. On the other hand, the presser foot (13) is It is formed to have a width that fits in the both side plates (6) and (8), and the protruding pieces (1
4) (14), the side surface shape of which is formed substantially along the outer surface of the tubular member (2), and the upper end (15) thereof
Is an elastic plate material extended to the position of the protruding piece (11) of the bracket, and the holding recess (7) of the bracket
After fitting the tubular object (2) into (9), presser foot (13)
The protruding piece (14) at the lower end of the front side of the bracket is hooked with the protruding piece (14) at the lower end of the front surface so that its upper part is along the upper part of the cylindrical object and the tip (15) of the upper part is pushed down. A cylindrical object clamp device for holding a cylindrical object (2) in a pressure contact state by bending (11) inward. 2. The presser foot (13) is formed so that an upper portion thereof is wider than a space between both side plates of the bracket, and has a slit (16) at a tip end portion thereof into which a rear inner edge portion of the bracket is fitted. Cylinder clamping device. 3. A depression (17) on the top of the presser foot (13).
The cylindrical object clamping device according to claim 1 or 2, wherein the cylindrical object clamping device is formed.