JP6084085B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device or a shrimp-type locking device, and more particularly to a device that locks a latch member by engaging a hook member, and more particularly to a device that is suitable for locking a wing, a tilt, or a middle column.

  A hook installed on the base, a handle pivotally supported on the base, and a latch member connected to the handle via a slidable pivot and releasably locked by a spring force; A device that locks a member to be locked between the bases, or a stopper that is pivotally supported by the base and is pushed from the latch member toward the lock position, and locks the member to be locked between the stopper and the base. The device is generally called “shrimp gold”, “shrimp can” or “shrimp type handle” (hereinafter collectively referred to as “shrimp type lock device”).

  Patent document 1 is disclosing the wing vehicle provided with a wing, a tilt, and a center pillar. The wing, the tilt and the middle pillar are releasably locked on the body side using a shrimp type locking device.

  Patent Document 2 discloses a shrimp type lock device that releasably locks an extension attached to the lower end of the wing to a middle pillar.

  Patent Document 3 discloses a shrimp type locking device that releasably locks a wing to a cargo bed side or a gate post (frame).

  Further, Patent Documents 4 to 8 are based on an application of an affiliated company of the present applicant, and various wing lock devices having a structure different from the shrimp type lock device have been proposed.

Utility Model Registration No. 3179997 Japanese Patent No. 5091576 Japanese Patent No. 3366429 Japanese Patent No. 3523029 Japanese Patent No. 3868554 Japanese Patent No. 4179939 Japanese Patent No. 4572142 Japanese Patent No. 4745157

  Since the wing mounted on the truck is large and heavy, an opening / closing device using air pressure or hydraulic pressure or an opening / closing auxiliary device using spring force is attached. Further, a rubber packing called a weather strip is attached to the end of the wing or the body side with which it comes into contact for waterproofing. Due to the elastic force of the rubber, the wing opens at its closed position. That is, even if the wing is to be closed, before the wing is locked, the wing end is in a state of floating from the base side, for example, the outer surface of the tilt. The wing end floating from the base side becomes an obstacle when the latch member of the shrimp type locking device is hooked on the hook. For this reason, when locking the wing, the operator pushes the stopper or wing toward the base side with the tip (engagement portion) of the latch member, and simultaneously hangs the engagement portion on the hook.

  Therefore, the hook needs to protrude from the base side with a height corresponding to at least the sum of “the opening of the wing” + “the thickness of the stopper” + “the thickness of the engaging portion”. When there is no stopper, the hook needs to protrude from the base side with a height corresponding to the sum of “the opening of the wing” + “the thickness of the engaging portion”.

  By the way, the outer width of the truck has an upper limit by law, and the width of the cargo room formed inside the wing is reduced by the protrusion height of the hook.

  Thus, there is a demand for a shrimp type locking device that can reduce the protruding height of the hook.

The shrimp type locking device according to the first and second aspects includes the following elements:
Hooks installed on the base side;
A handle that is swingably connected directly or indirectly to the base side;
The lock is connected to the handle via a pivot so as to be swingable, and is engaged by the hook and maintained in an engaged state by a spring force. The locked state is operated by operating the handle against the spring force. A latch member configured to be releasable from ;
An engagement portion provided on the latch member and engaged with the hook;
Provided on the latch member, between the engaging portion and the pivot, when the engaging portion engages with the hook, the predetermined member abuts and is disposed at a position where the predetermined member can be pressed. Abutting part to be done.
The predetermined member is a member to be locked or another member that is locked together with the member to be locked and assists locking of the member to be locked, for example, a stopper.
In the first aspect, the predetermined member is swingably connected to the base side directly or indirectly, and the latch member is engaged with the hook between the latch member and the base side in the locked state. The stopper is configured to be releasably clamped and to be releasably clamped between the lock member and the base side.
In a second aspect, the predetermined member is a locked member that is releasably clamped between the latch member and the base side in the locked state in which the latch member is engaged with the hook.

The shrimp type locking device contributes to the following effects.
In the latch member, the engagement portion that engages with the hook and the contact portion that contacts the predetermined member and pushes it to the base side are separately formed, so that when the engagement portion is hooked on the hook, Since the contact part for pushing in the predetermined member should just be located in the outer side of the predetermined member, the engaging part does not need to be located in the outer side of the predetermined member. Accordingly, it is sufficient that the protrusion height of the hook is long enough to hang the engaging portion on the hook, so that the protrusion height of the hook can be reduced. Such a shrimp type locking device is suitable for locking a member to be locked that tends to be separated from the base side at the closed position, such as a wing of a track, and is also suitable for locking a track tilt or the like. This is because the protrusion height of the hook located on the outside of the truck can be reduced, so that the width of the cargo compartment formed on the inside of the truck can be increased.

(A) is a side view which shows the locked state of the shrimp type locking device which concerns on Embodiment 1, (B) is an operation | movement figure which shows the intermediate state of the apparatus shown to (A). It is a front view which shows an example of the structure of the shrimp type | mold locking apparatus shown to FIG. 1 (A). (A) is a side view which shows the locked state of the shrimp type locking device which concerns on a comparative example, (B) is an operation | movement figure which shows the intermediate state of the apparatus shown to (A). (A) is a side view which shows the locked state of the shrimp type locking device which concerns on Embodiment 2, (B) is an operation | movement figure which shows the intermediate state of the apparatus shown to (A). (A) is a side view which shows the locked state of the shrimp type locking device which concerns on Embodiment 3, (B) is an operation | movement figure which shows the intermediate state of the apparatus shown to (A). It is an external view of the wing vehicle which concerns on Embodiment 4 to which the shrimp type | mold locking device which concerns on Embodiments 1-3 is applied. (A) is a front view which shows the locked state of the shrimp type locking device which concerns on Embodiment 5, (B) is a partial right view which shows the positional relationship of the several axis shown to (A), (C) These are the operation | movement figure of FIG.

  Hereinafter, an example of a preferred embodiment for carrying out the invention will be described.

  The predetermined member is a stopper that is swingably connected directly or indirectly to the base side and is clamped between the latch member and the base in a state where the latch member is engaged with the hook. With the indirect lock using the stopper, the locked member can be locked at a position away from the latch member, and the locked member can be locked without attaching an extension to the locked member.

  Alternatively, the predetermined member is a locked member, and the locked member is sandwiched between the latch member and the base. Thus, the member to be locked may be directly locked without using a stopper. The portion sandwiched between the latch member and the base may be the main body of the member to be locked, or may be an extension of the member to be locked or a component attached to the member to be locked.

  The handle is swingably connected to the base side through the stopper. By connecting the handle to the stopper, the handle operation and the stopper operation can be linked. The handle may be pivoted directly to the base side, or may be swingably connected to a swing member other than the stopper.

  The latch member is swingably connected to the handle via a slidable pivot, and is locked so as to be releasable when engaged with the hook. Since the pivot of the latch member is slidable, the latch member can be reliably locked. Such a pivot slide mechanism may be provided on the handle or the stopper.

  The latch member includes a window portion through which the hook is inserted, and a frame portion that surrounds the window portion, the engaging portion is disposed on a distal end side of the frame portion, and the pivot portion on the pivot side of the frame portion. A contact portion is disposed. By disposing the abutting portion on the inner side in the operating radial direction of the latch member than the engaging portion, the latch member becomes compact and contributes to the thinning of the shrimp type lock device.

  At least one of the abutting portion and the corresponding contact portion of the predetermined member (locked member or stopper) is provided with a portion protruding toward the other. That is, the protrusion can be provided on the latch member, the predetermined member, or both the latch member and the predetermined member.

  At the position where the latch member is engaged with the tip of the hook, the engagement portion is located on the base side and the contact portion is located on the opposite side with the predetermined member interposed therebetween. According to this form, the strength of the engaging portion is improved by the contact portion.

  When the member to be locked is a wing, a tilt or a middle pillar pivotally supported on the base side, a part integral with these members to be locked, for example, an end of the member to be locked or an extension provided at the end, For example, a latch receiver or a tongue piece can be used as the predetermined member. Alternatively, the main body of the locked member may be a predetermined member. Alternatively, the stopper may be a predetermined member, and the member to be locked may be locked between the latch member and the base side via the stopper.

  The stopper can swing separately from the locked member. The stopper may swing integrally with the member to be locked. For example, when the latch receiving member or the extension portion can be attached to the locked member, the latch receiving portion or the extension portion can be a stopper that swings integrally with the locked member. On the other hand, if it is not desirable to attach a latch receiver or an extension to the member to be locked, the member to be locked may be locked via a stopper.

  The base on which the hook is directly or indirectly installed may be fixed or releasably fixed. For example, when the shrimp type locking device is applied to a wing vehicle, the hook is pivoted and locked to the body or chassis so as to be swingable and lockable, or in the middle of the split tilt and pivoted and locked to the body or chassis. It is formed in a middle pillar or a gate pillar or frame that is freely connected. A plurality of hooks may be arranged in the horizontal direction or the vertical direction.

  The handle can be swingably connected to the base side. Further, the handle can be swingably connected to a member that is swingably connected to the base side, for example, a stopper.

  The latch member can be swingably connected to the handle via the slider link mechanism, and the latching state of the latch member and the hook or the locked state of the handle is maintained by the spring force acting on the slider. be able to.

  In the latch member, the engaging portion is a portion that is hooked to the hook at the time of locking, and the abutting portion is a portion that abuts against the predetermined member at the time of locking and pushes the predetermined member or the member to be locked to the base side. The contact portion can be formed of a member that reduces friction with the mating member, such as a pin or a roller. Further, the abutted portion with which the abutting portion abuts may be a slope or a curved surface in order to optimize the direction of the force.

  When the base is a movable member that is fixed so as to be swingable or pivotable, for example, a tilt or a center post, the pivot of the handle prevents the handle from opening relative to the tilt when the tilt is suspended from the handle. A torsion coil spring can be attached to the handle to urge the handle or the like toward the tilt side. A torsion coil spring can be attached to the pivot of the stopper for the same purpose.

  A detent that defines the maximum opening of the stopper can be formed near the proximal end or the pivot of the stopper. A similar detent may be formed on the handle or the latch member.

Various mechanisms disclosed in the above-mentioned patent documents or other known documents can be incorporated in the shrimp type locking device of the embodiment, or various members can be applied. The following are some examples:
(1) A spring mechanism acting between the latch member and the handle, as disclosed in FIG. 4 of Patent Document 1, and a mechanism for latching the handle to the base side using a torsion coil spring provided in an intermediate portion of the handle;
(2) Extension or tongue attached to the wing end as disclosed in FIG.
(3) A torsion coil spring mounted on a pivot with respect to a stopper of the handle as disclosed in FIG. When unlocked, the handle can remain suspended with the stopper under the spring force of the torsion coil spring;
(4) As disclosed in FIG. 3 of Patent Document 4, a spring rod mechanism that is loaded inside the handle and is latched by another hook on the base side to lock the handle to the base side, between the handle and the stopper Sliding pin;
(5) As disclosed in FIG. 4 of Patent Document 5, the flat latch mechanism of the handle, the contact plate provided at the contact portion with the wing of the stopper, as disclosed in FIG. A torsion coil spring that is mounted on the pivot of the stopper and biases the stopper in the opening direction; the overall shape and arrangement of the shrimp-type locking device and base plate as disclosed in FIG.
(6) As disclosed in FIG. 3 of Patent Document 6, guide pins or rollers provided on the sliding portion and slopes on which they slide or roll;
(7) Opening stopper formed at the end of the stopper as disclosed in FIG.
(8) A curved surface or a slope in a sliding part or a pressing part as disclosed in FIG.

  The handle, the latch member, and the predetermined member or stopper can be realized by various basically equivalent mechanisms. For example, these can each be composed of a plurality of links.

  Hereinafter, an embodiment of the present invention will be described in more detail with reference to the drawings.

Embodiment 1

  In the shrimp type locking device, the “predetermined member” may be a “locked member” or a “stopper”. In the former case, a member to be locked which is a “predetermined member” is locked between the latch member and the base. In the latter case, the member to be locked is locked between the “predetermined member” stopper and the base. In the first embodiment, the latter case, that is, the case where the “predetermined member” is a “stopper” and the “predetermined member (stopper)” is a component of the shrimp type locking device 1 will be described. The embodiment in the former case will be clarified by referring to the description of the first embodiment.

  FIG. 1A is a side view showing a locked state of the shrimp type locking device according to the first embodiment, and FIG. 1B is an operation diagram showing an intermediate state of the device shown in FIG. .

  Referring to FIGS. 1A and 1B, the shrimp type locking device 1 includes a hook 3 installed on the base 2 side, a handle 4 that is swingably connected to the base 2, and a handle 4. A latch member 7 that is swingably connected via the pivot 5 and that is releasably locked when engaged with the hook 3, and a stopper 8 that is swingably connected to the base 2, for example. Yes.

  The handle 4 is connected to the base 2 via a pin 9. The pivot 5 of the latch member 7 is slidably engaged with a long hole 6 formed in the handle 4. The latch member 7 is loaded with a coil spring 11 and urges the pivot 5 toward one end of the long hole 6.

  Furthermore, the latch member 7 is positioned between the engaging portion 7 a that engages with the hook 3, and between the engaging portion 7 a and the pivot 5, and contacts the stopper 8 when the engaging portion 7 a engages with the hook 3. And an abutting portion 7b disposed at a position where the stopper 8 can be pressed. The contact part 7b is located inside the operating radius when the latch member 7 is locked, relative to the engaging part 7a. The contact portion 7b protrudes toward the contacted portion 8a of the stopper 8 that faces the contact portion 7b. The hook 3 can be inserted between the engaging portion 7a and the contact portion 7b.

  The handle 4, the latch member 7, and the stopper 8 are appropriately bent or formed with openings or windows in order to achieve a locking operation and improve structural strength while preventing mutual interference. Or channel-shaped or channel-shaped steel.

  FIG. 2 is a front view showing an example of the structure of the shrimp type locking device 1 shown in FIG. Referring to FIG. 2, an intermediate portion of the stopper 8 is formed in a groove steel shape, and an opening 8b through which the hook 3 and the engaging portion 7a can be inserted is formed on the bottom surface of the groove. An abutted portion 8a with which the abutting portion 7b abuts is located at the edge of the opening 8b. On the front end side of the latch member 7, a window portion 7c through which the hook 3 is inserted and a frame portion 7d surrounding the window portion 7c are formed. The engaging portion 7a is disposed on the distal end side of the frame portion 7d, and the abutting portion 7b is disposed on the pivot 5 side (base end side of the latch member 7) of the frame portion 7d. In the locked state, the engaging portion 7a and the contact portion 7b face each other with the hook 3 interposed therebetween. Note that the front structure of the shrimp type locking device 1 according to the first embodiment is not limited to the structure shown in FIG. 2, and instead of the illustrated stopper 8, for example, a latch receiving device shown in FIG. 12 can be used as the stopper 8 to lock the member to be locked (W) integrated therewith.

  Subsequently, an operation for locking the member W to be locked between the stopper 8 and the base 2 will be described with reference to FIGS. 1 (A) and 1 (B).

[Handle raising]
When the member to be locked W and the stopper 8 are at the open position, that is, at a position further away from the base 2, the operator swings the handle 4 counterclockwise in the figure. Along with this, the latch member 7 moves while swinging toward the hook 3, and the engagement portion 7 a can be engaged with the hook 3 and the stopper 8 can be pushed by the contact portion 7 b.

[Engagement of engaging portion 7a]
In particular, referring to FIG. 1B, the operator hooks the engaging portion 7 a at the tip of the latch member 7 on the tip of the hook 3.
[Pushing stopper 8]
In particular, referring to FIG. 1B, since the engaging portion 7a and the contact portion 7b are formed separately, the engaging portion 7a engages with the hook 3 and is positioned inside the stopper 8. Even in this case, the contact portion 7b at the intermediate portion of the latch member 7 is in contact with the outside of the stopper 8 so that the stopper 8 and the locked member W can be pushed in.

  When the operator swings the handle 4 in the clockwise direction in the drawing while confirming that the engaging portion 7a is engaged with the hook 3, the latch member 7 also approaches the base 2 side while swinging in the same direction. I will do it. Along with this, the stopper 8 is pressed from the contact portion 7b and is pushed together with the locked member W toward the base 2 side. From the state shown in FIG. 1 (B), the operator swings the handle 4 counterclockwise in the figure, and brings the stopper 8 and the locked member W to the base 2 side via the contact portion 7b. You can also push in.

  Referring to FIGS. 1B to 1A, when the latch member 7 swings in the clockwise direction in the drawing with the engaging portion 7a engaged with the hook 3, the pivot 5 compresses the coil spring 11. While sliding in the long hole 6 toward the pin 9 side. Since the coil spring 11 is compressed to the maximum immediately before the lock position shown in FIG. 1A and slightly extends from the minimum length at the lock position, the latch member 7 and the lock of the handle 4 and the stopper 8 are stable. It will be something like that. When the handle 4 reaches the lock position shown in FIG. 1A, the handle 4, the latch member 7 and the stopper 8 are arranged on a substantially straight line, and the locked member W is sandwiched between the stopper 8 and the base 2.

[Contrast of Embodiment 1 and Comparative Example Apparatus]
Next, the advantage of the shrimp type locking device of Embodiment 1 will be described in comparison with the shrimp type locking device according to the comparative example. 3A is a side view showing a locked state of the shrimp type locking device according to the comparative example, and FIG. 3B is an operation diagram showing an intermediate state of the device shown in FIG. 3A.

  Referring to FIGS. 3A and 3B, the shrimp type locking device 101 according to the comparative example does not have the contact portion 7b shown in FIGS. 1A and 1B. The engaging portion 107a has the same configuration as that of the shrimp type locking device 1 of the first embodiment except that the engaging portion 107a also functions to press the stopper 8.

  That is, the shrimp type locking device 101 according to the comparative example is connected to the hook 103 installed on the base 2, the handle 4 pivotally supported on the base 2, and the pivot shaft 5 slidable in the elongated hole 6 of the handle 4. The latch member 107 is releasably locked by the spring force, and the stopper 8 is pushed from the latch member 107 toward the lock position.

  Referring to FIG. 3B, the engaging portion 107 also serves as a contact portion for pushing the stopper 8 into the base 2 side. In a state where the engaging portion 107 is positioned on the base 2 side with respect to the stopper 8, the stopper 8 cannot be pushed. Therefore, the engaging portion 107 needs to be positioned outside the stopper 8 when locked. Further, in order to lock the stopper 8, the engaging portion 107 needs to be hooked on the hook 103. Due to the above two causes, the protrusion height Y of the hook 103 is increased, and finally, it is possible to achieve two different functions of engagement of the engaging portion 107 with the hook 103 and pressing against the stopper 8. Yes.

  On the other hand, referring to FIG. 1 (B), in the shrimp type locking device 1 of the first embodiment, the engaging portion 7a and the abutting portion 7b are separately formed. When engaged, the engaging portion 7 a may be positioned inside the stopper 8. Therefore, referring to FIG. 1A, the protrusion height X of the hook 3 can be formed to be less than half the protrusion height Y of the hook 103 of the comparative example, and thus the shrimp type locking device 1 can be made thin. Is achieved.

Embodiment 2

  In the first embodiment, the stopper 8 is used to lock the locked member W between the stopper 8 and the base 2 side. However, as described in the second embodiment, the stopper 8 is not used. The locked member W can also be directly locked between the latch member 7 and the base 2 side. In the second embodiment, for the common points of the second embodiment and the first embodiment, the description of the first embodiment will be referred to as appropriate, and differences between the two embodiments will be mainly described.

  4A is a side view showing a locked state of the shrimp type locking device according to the second embodiment, and FIG. 4B is an operation diagram showing an intermediate state of the device shown in FIG. 1A. . Referring to FIG. 4B, the abutting portion 7b can directly abut on the abutted portion Wa of the locked member W, and the locked member W is moved to the base 2 side in accordance with a predetermined operation of the handle 4. Can be pushed into. The locked member W is clamped between the latch member 7 and the base 2 in the locked state shown in FIG.

Embodiment 3

  In the first and second embodiments, the embodiment in which the handle 4 is connected to the base 2 has been described. In the third embodiment, an embodiment in which the handle 4 is connected to the stopper 8 will be described. However, in the third embodiment, the description of the first embodiment is appropriately referred to for the common points of the third embodiment and the first embodiment, and differences between the two embodiments will be mainly described.

  FIG. 5A is a side view showing a locked state of the shrimp type locking device according to the third embodiment, and FIG. 5B is an operation diagram showing an intermediate state of the device shown in FIG. 5A. .

  5 (A) and 5 (B), the shrimp type locking device 1 includes a hook 3 installed on the base 2, a handle 4 that is indirectly swingably connected to the base 2, and a handle. The latch member 7 is slidably connected to the elongated hole 6 via the pivot 5 slidable and is releasably locked when engaged with the hook 3, and the base 2 side via the pin 10. And a stopper 8 that is swingably connected.

  The handle 4 is connected to the stopper 8 via the pin 9 and is finally connected to the base 2 side so as to be swingable via the stopper 8.

  Since the handle 4 is thus connected to the stopper 8, the stopper 8 is also pressed to the base 2 side by a predetermined operation of the handle 4, and further, the base 2 side also by the contact portion 7b of the latch member 7 Pressed.

  Note that the front structure of the shrimp type locking device 1 according to the third embodiment can be formed into a structure as described in the fifth embodiment.

Embodiment 4

  In the fourth embodiment, an application example of the shrimp type lock device 1 of the first to third embodiments will be described. FIG. 6 is an external view of a truck, particularly a wing vehicle, to which the shrimp type locking device according to the first to third embodiments is applied.

  Referring to FIG. 6, the wing wheel 20 includes a wing 21, a tilt 22, and a middle pillar 23 that are swingable with respect to the gate pillar 20 a and the chassis 20 b. An opening / closing auxiliary device 24 is connected to the wing 21. The tilt 22 is divided into two pieces, and a middle pillar 23 is disposed between them. The middle column 23 is releasably locked to the chassis 20b by any of the shrimp type locking devices 1 of the first to third embodiments in the standing state.

  The shrimp type locking device 1 for locking the wing 21 is attached to the middle pillar 23. The middle pillar 23 becomes the base 2 shown in FIG. For locking the wing 21, the shrimp type locking device 1 of the first or third embodiment having the stopper 8 is suitable. However, the shrimp type locking device 1 of Embodiment 2 can also be used by attaching an extension part or a tongue part to the lower end of the wing 21.

  The shrimp type locking device 1 for locking the tilt 22 is attached to the gate pillar 20a. That is, the body side of the wing wheel is the base 2 side shown in FIG. The shrimp type locking device 1 according to the second embodiment is suitable for locking the tilt 22. The shrimp type locking device 1 locks the tilt 22 that is a member to be locked via the latch receiver 12 attached to the end of the tilt 22. The latch receiver 12 is formed with a notch 12a through which the hook 3 can pass. This latch receiver 12 can be regarded as the stopper 8.

  Similarly, the connection between the tilt 22 and the middle pillar 23 can be performed using the shrimp type locking device 1 attached to the middle pillar 23.

Embodiment 5

  In the fifth embodiment, a case where the shrimp type locking device 1 of the third embodiment as shown in FIG. 4A is used for locking the wing 21 as shown in FIG. 6 will be described. In the fifth embodiment, for the common points of the fifth embodiment and the third embodiment, the description of the third embodiment is referred to as appropriate, and differences between the two embodiments will be mainly described.

  FIG. 7A is a front view showing a locked state of the shrimp type locking device according to the fifth embodiment, and FIG. 7B is a partial right side showing the positional relationship of a plurality of pivots shown in FIG. FIG. 7C is an operation diagram or a modified diagram of FIG.

  Referring to FIGS. 7A to 7C, the shrimp type locking device 1 is attached to the middle pillar 23 or the tilt 22 shown in FIG. 6 as a base via a base plate 2a. The hook 3 formed on the base plate 2a is composed of a plurality of claws arranged in the lateral direction. The handle 4 is formed in a channel steel shape and is attached to the stopper 8 via a pin 9. A pin 9 that is the pivot of the handle 4 is preferably provided with a torsion coil spring that acts between the handle 4 and the stopper 8. This torsion coil spring urges the handle 4 so that the handle 4 does not move away from the base plate 2a or the stopper 8 when the shrimp type locking device 1 is entirely suspended. A latch mechanism 13 that locks the lower end of the handle 4 so as to be releasable in the locked state is installed on the base plate 2a side (the middle pillar 23 and the tilt 22 in FIG. 6). Although FIG. 7A shows a rotary type device using a torsion coil spring and a rotating plate as the latch mechanism 13, a flat type latch mechanism using a coil spring and a rod may be used. The flat-type latch mechanism is installed on the base plate 2a side so as to act on the lower end or middle portion of the handle.

  The stopper 8 is swingably attached to the base plate 2a via a pin 10. As shown in FIG. 7C, the attachment position and length of the stopper 8 can be varied according to the position where the member to be locked is pressed. The stopper 8 may be composed of a plurality of links. At the base end of the stopper 8, an opening stopper 8 c that is capable of contacting the base plate 2 a and defining the maximum opening of the stopper 8 is formed. A similar stopper may be formed on the handle 4. The stopper 8 accommodates the pivot portion of the handle 4 and is formed in a channel steel shape so as to accommodate the upper portion of the handle 4 and the latch member 7 in the locked state. An opening 8b through which the hook 3 and the engaging portion 7a can be inserted is formed in the middle portion of the stopper 8 and on the bottom surface of the recessed portion (groove). An abutted portion 8a with which the abutting portion 7d abuts is positioned at the edge of the opening 8b.

  In particular, referring to FIG. 7A, the latch member 7 is formed in a frame shape whose base end side is open so that the upper portion of the handle 4 can be projected and retracted, and the pivot 5 is attached to the base end. The pivot 5 is slidably engaged with a slot 6 formed on both side surfaces of the handle 4. The coil spring 11 expands and contracts between the pivot 5 and the distal end side of the handle 4 in accordance with the locking operation. On the front end side of the latch member 7, a window portion 7c through which the hook 3 is inserted and a frame portion 7d surrounding the window portion 7c are formed. The engaging portion 7a is disposed on the distal end side of the frame portion 7d, and the abutting portion 7b is disposed on the pivot 5 side (base end side of the latch member 7) of the frame portion 7d. In the locked state, the engaging portion 7a and the contact portion 7b face each other with the hook 3 interposed therebetween.

  The abutting portion 7b is rod-shaped and bridges the left and right sides of the frame portion 7d to increase the rigidity of the front end side of the latch member 7. During the locking operation, the abutting portion 7 b may abut against the stopper 8 before the engaging portion 7 a engages with the hook 3, and abuts against the stopper 8 when the engaging portion 7 a engages with the hook 3. Alternatively, the stopper 8 may come into contact immediately after the engaging portion 7a is engaged with the hook 3.

  In this shrimp type locking device 1, since the engaging portion 7 a and the abutting portion 7 b are separated, the abutting portion 7 b holds the stopper 8 even when the engaging portion 7 a is located inside the stopper 8. It can be pushed into the base plate 2a side. Therefore, even if the protrusion height of the hook 3 is designed to be low, the wing 21 (see FIG. 6) that is easy to open can be pushed together with the stopper 8 and locked.

  Although a plurality of embodiments have been described above, the present invention is not limited to these embodiments, and further modifications, substitutions, or adjustments can be made without departing from the basic technical idea of the present invention. Is possible. It should be noted that the disclosure of the above-mentioned patent documents and the like is incorporated herein by reference. It goes without saying that the present invention includes various variations and modifications that can be made by those skilled in the art according to all the disclosures or the disclosed technical ideas.

  The shrimp type locking device according to the present invention is suitably used for truck wing, tilt, or middle column lock. The shrimp type locking device according to the present invention can be used in place of the conventional shrimp type locking device.

DESCRIPTION OF SYMBOLS 1 Shrimp type locking device 2 Base 2a Base plate 3 Hook 4 Handle 5 Pivot (Pivot of latch member)
6 Long hole 7 Latch member 7a Engagement part (latch part)
7b Contact part (pressing part)
7c Window portion 7d Frame portion 8 Stopper, predetermined member 8a Contacted portion (pressed portion)
8b Opening 8c Stopper 9 Pin (Handle pivot)
10-pin (stopper pivot)
11 Hatch receipt (extension part)
11 Coil spring 12 Hatch holder (extension part)
12a Notch 13 Latch mechanism 20 Wing vehicle, truck 20a Gate pillar (frame, torii), body 20b chassis, body 21 wing, locked member, predetermined member 22 tilt, locked member, predetermined member 23 Middle column, locked member, Predetermined member 24 Open / close assist device (open / close device)
X Projection height of hook 3 Projection height of hook 103 (comparative example)
W Locked member Wa Contacted part

Claims (7)

A hook installed on the base side,
A handle that is swingably connected directly or indirectly to the base side;
The lock is connected to the handle via a pivot so as to be swingable, and is engaged by the hook and maintained in an engaged state by a spring force. The locked state is operated by operating the handle against the spring force. A latch member configured to be releasable from ,
Have
The latch member is
An engaging portion that engages with the hook;
An abutting portion disposed between the engaging portion and the pivot, the abutting portion being in contact with a predetermined member when the engaging portion engages with the hook, and disposed at a position where the predetermined member can be pressed;
Bei to give a,
The predetermined member is swingably connected directly or indirectly to the base side, and the latch member is releasably sandwiched between the latch member and the base in the locked state where the latch member is engaged with the hook, The locking device is a stopper configured to releasably hold the member to be locked with the base side .   A hook installed on the base side,
  A handle that is swingably connected directly or indirectly to the base side;
  The lock is connected to the handle via a pivot so as to be swingable, and is engaged by the hook and maintained in an engaged state by a spring force. The locked state is operated by operating the handle against the spring force. A latch member configured to be releasable from,
  Have
  The latch member is
  An engaging portion that engages with the hook;
  An abutting portion disposed between the engaging portion and the pivot, the abutting portion being in contact with a predetermined member when the engaging portion engages with the hook, and disposed at a position where the predetermined member can be pressed;
  With
  The predetermined member is a locked member configured to be releasably clamped between the latch member and the base side in the locked state in which the latch member is engaged with the hook. apparatus. The handle lock device according to claim 1, characterized in that it is swingably connected to the base side through the stopper. The latch member, the handle being pivotally connected via a slidable said pivot, one of claims 1-3, characterized in that it is locked releasably in engagement with the hook The locking device as described. The latch member includes a window portion through which the hook is inserted, and a frame portion surrounding the window portion,
The locking device according to any one of claims 1 to 4 , wherein the engaging portion is disposed on a distal end side of the frame portion, and the abutting portion is disposed on the pivot side of the frame portion. Wherein in at least one of the abutment part and the portion facing the abutting portion of the predetermined member, the lock according to any one of claims 1 to 5 in which the portion projecting toward the other is provided, it is characterized by apparatus. The engagement portion is located on the base side and the contact portion is located on the opposite side of the predetermined member at a position where the latch member is engaged with the tip of the hook. Item 7. The locking device according to any one of Items 1 to 6 .

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