KR20040071576A - Latch of cooler box - Google Patents

Abstract

PURPOSE: Provided is a latch device of cold box to enhance appearance characteristics, to provide use convenience by eliminating the limit for opening operation, and to enhance assembling ability by unitizing a feature. CONSTITUTION: The latch device of cold box includes a lock lever, an urging member(7), and an operation part. The lock lever is mounted in a lid(2) for opening/closing the mouth of a box body(1). The urging member urges the lock lever in the direction of engagement. The operation part switches the lock lever from an engagement position to a disengagement position. The lock lever is engaged with/disengaged from a latching part of the box body. The lock lever is arranged in a space part which is provided in the lid. Inside the space part, the latching part is inserted from a lower opening and is urged in the direction of an inner surface of an outside vertical wall part(40b) by an urging member. The lock lever is switched from the engagement position to the disengagement position against an urging force of the urging member by pushing the operation part.

Description

Latch of Cooling Box {LATCH OF COOLER BOX}

INDUSTRIAL APPLICABILITY The present invention can be suitably used as a latching device of a cold storage box, particularly in the case of serving as a pivoting hinge of a lid.

8 shows an example of a conventional latch structure applied to a cold storage box. The latch device shown in Fig. 8A is disclosed in Patent Document 1 below, and the bracket 51 and the bracket 51 provided on the lid 65 in correspondence with the locking portions 61 of the box body 60. The lock lever 53 is hinged and supported with the pin 52 interposed therebetween. The bracket 51 is provided with a locking recess 51a which is opened downward to receive the locking portion 61. The lock lever 53 is provided with the operation part 53a of the lower end side, and the one-piece part 53b which protrudes inward and prevents the locking part 61 from entering into the locking recess 51a. In this latching device, when the lid 65 is mounted on the box body 60, and the lock lever 53 is rotated toward the lid, the latch portion 61b enters the locking recess 51a. Is snuggled from the bottom and locked to prevent it from falling out. The engagement is released by rotating the lock lever 53 outward by inserting a finger or the like into the inside of the operation portion 53a from the pit portion 60a formed in the box body 60. In addition, although the pressing member is not used in this structure, it is also possible to apply the force in the engagement direction to the lock lever 53, and to prevent the unintentional peeling of the one-piece part 53b with respect to the locking part 61.

The latch device shown in FIG. 8 (b) is disclosed in Patent Document 2 below, and includes a recess 66a and a recess 66a formed in the lid 66 corresponding to the locking portion 63 of the box body 62. A rib 64 having an outer cutout 64a protruding from the vertical wall of the wall and contacting a part of the locking portion 63, and an operation lever hinged with the pin 56 interposed between the recesses 66a. 55, a nail-like piece 57 protruding inwardly of the operating lever 55, and a pressing member 58 for applying the operating lever 55 to the recessed portion 66a. . In the above latching device, when the lid 66 is mounted on the box body 62 and the lid is closed, the operation lever 55 is moved to the outside by the stress of the nail 57 that touches the locking portion 63. Once retracted, the nail piece 57 returns to the bottom of the locking portion 63, and at the same time, the outer cutout 64a contacts the upper and inner surfaces of the locking portion 63 to the locking portion 63. Keep up with This engagement engages a finger or the like with the inner surface of the operation lever 55 from the pit 62a formed in the box body 62, and moves the operation lever 55 against the pressing force of the pressing member 58 to the outside of the lid. When rotated, the nail piece 57 is released from the locking portion 63 and released.

[Patent Document 1]

Japanese Patent Application Laid-Open No. 9-268833 (pages 2 to 4, FIGS. 1 to 4).

[Patent Document 2]

Utility Model Registration No. 2588778 (2nd to 3rd page, Figs. 1 to 9)

The latch device of the conventional cold storage box as described above has a problem from the following point of view.

First, in the conventional apparatus, since the lock lever 53 or the operation lever 55 releases the engagement by engaging the finger on the inner surface side of the lever and pivoting outward of the lid, the position where the finger is put in the closed state of the lid Pits (60a, 62a) that is) must be formed relatively large in the box body (60, 62). For this reason, the appearance of a cold storage box in a closed state worsens. Since the cold storage box is often used outdoors, the appearance characteristics are an important factor in determining the value of the product.

Second, in many cases, a plurality of cool boxes are placed close to a determined place such as a fishing boat or a vehicle. In this case, the latch device rotates the lock lever 53 or the operation lever 55 to the outside of the lid. If the configuration is to be released, the lid may not be opened in a spatial manner. Further, in the opening operation, the load is also increased from the relationship between the lid and the cold storage structure. For example, a finger is inserted into the inner surface side of the lock lever 53 or the operating lever 55 to be pulled out of the lid to release the engagement. Afterwards, it is bad to use because it is necessary to grip the lid side by hand and lift it up.

Third, in the cold storage box, the lid is opened and closed with both latch devices interposed therebetween to select an open state to be released from the box body and a one-open state to be rotated to one side of the box body by using one latch device as a pivoting hinge. It is supposed to be. Therefore, since the latch apparatus is used in plural, it is intended to reduce the cost by improving the assembly adhesion to the lid and the like. However, in the conventional apparatus, it is difficult to improve the assembly because each member is attached to the lid in turn and the processing on the lid side is complicated.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and in particular, to improve the appearance characteristics, to eliminate the restriction of the lid opening operation, to improve the convenience of use, to unite the main parts, and to handle parts, The present invention provides a latching device for a cold storage box having excellent management and assembly adhesion to a lid.

1 is a schematic external view showing the cold storage box to which the present invention is applied in a lid open state.

FIG. 2 is a block diagram showing a latch device applied to the cold storage box of FIG.

FIG. 3 is a schematic exploded view showing the relationship between constituent members of the latch device of FIG.

4 is a view showing details of main members of the constituent members of FIG.

Fig. 5 is a view showing the operation of the latch device when the lid is closed.

Fig. 6 is an operation diagram when the lid closed state and the latch device are disengaged.

Fig. 7 is an operation diagram of the latch device when the lid is in the open state.

Fig. 8 is a problem explanatory diagram showing a latch device of a cold storage box according to the prior art.

※ Explanation of Major Drawings

1. Box body (15 is stepped, 16 is latched, 17 is latched shaft)

2. Lid (26 is mounting part on both sides, S is space part)

3 ... Latch

4. Cover (40 is outer wall, 40a is upper surface of outer wall, 40b is part)

5 ... Bracket

6 ... shaft

7. Pressure element

30 ... lock lever (31 is main body, 32 is opening, 33 is engaging part)

In order to achieve the above object, the latching apparatus of the cold storage box according to the present invention is specified in the example of Figs. 1 to 7, and is assembled to a lid 2 that opens and closes the opening of the box body 1, and the box body ( A lock lever 30 that is engaged and disengaged from the engaging portion 16 provided in 1), and a pressing member 7 for applying a force in an engagement position in which the lock lever is engaged with the locking portion 16; In the latch device 3 having an operation unit 32 for changing the lock lever 30 from the engaging position to the release position, the lock lever 30 is formed on the lid 2 and the locking portion 16 is provided. ) Is disposed in the space S that can be inserted inwardly from the lower opening, and the outer side wall portion (for example, the cover) which forms the space S by the pressing member 7. A force is applied to the inner surface direction of the wall portion 40b of the outer wall 40 in (4), and the operation portion 32 is closed on the lid. By pressing inward from the outside of (2), it is rotated against the pressing force of the said press member 7, and it can change from the engagement position to the release position, It is characterized by the above-mentioned.

In the above structure, the following points are improved with respect to the conventional products.

A) First, in the external design of the cold storage box (lid closed state), since the operation unit adopts a configuration in which the lid is pressed inward from the outside of the lid, it is not necessary to provide a pit for finger fitting in the box body as in the conventional products. In addition, since the opening for the operation portion formed in the lid can be made small, the appearance can be improved and the degree of freedom in design can be expanded.

B) In the case of opening from the closed state of the lid, when the operation portion is pressed inward of the lid against the pressing force of the pressing member, the lock lever is rotated by the pressing to release the engagement of the engaging portion of the box body. do. Therefore, in the latch device of the present invention, even when the lid load is large, the user can lift the lid continuously while pressing the operation portion inside the lid. The convenience of use can be improved by eliminating the trouble of holding the lid side, and the space constraint included in the problem can be alleviated by the press structure inside the lid.

C) When the lid is closed again, the lid is folded to block the opening of the box body, and the lock lever rotates inward to the inner side of the lid by the stress of the locking part of the box body. When passing through the part, it is returned to its original engagement position by the pressing force of the pressing member and engaged with the engaging portion. This operation differs from the configuration of Fig. 8 (b) in which the operation portion is moved outward of the lid in that the operation portion rotates or swings in the same direction as the lock lever, that is, inside the lid, and the engagement switching is performed. The discomfort of the city can also be alleviated.

The present invention as described above enables development as described in claims 2 to 6.

In Claim 2, since the locking part 30 is latched | engaged with the latching part 16, and the engaging part 33 and the said operation part 32 are formed integrally side by side, the number of members is reduced. In addition, with respect to the configuration of FIG. 8 (b), the moving part can also have the advantage that the pole is not visible.

In Claim 3, the said space part S is formed in the said lid | cover 2, and is with the cutout part (for example, lower end difference 27) formed in the corresponding part of the said lid | cover 2. Since the lock lever 30, the pressurizing member 7, and the operation part 32 are disposed on the cover 4, the latch device is unitized to provide a handleability and The assemblability to a lid can be improved. In addition, the lid shape can be easily changed by the cover. In the present invention, however, the cover may be omitted, and the lid mold may be studied to form the space portion integrally with the lid.

In Claim 4, the said cover 4 is formed so that it may become substantially one surface with the side part of the said lid 2, and a part is opened 42 and the operation part 32 is exposed and arrange | positioned at the said opening, Thus, for example, the operation portion 32 is in a state where the edge is formed by the opening of the cover, so that the standout can be improved.

In the said claim | item 5, since the said operation part 32 forms the recessed part 32a for long finger-hooks on the outer surface, it slips by putting a finger or a fingertip in a recessed part at the time of said engagement release. Or make it easier to lift the lid continuously.

In the state of claim 6, in the state where the lock lever 30 is engaged with the engaging portion 16, it also serves as a rotational hinge when opening and closing the lid 2, the versatility of the latch device 3 as in the prior art maintain.

Embodiment of the Invention

An embodiment of the present invention will be described with reference to FIGS. 1 is a schematic view of a cold storage box in a state where a lid is removed from a box body, and FIGS. 2 to 4 show the configuration of the latch device of FIG. 2 (a) is a front view of the latch device, (b) is an enlarged cross-sectional view taken along the line A-A of (a), and (c) is an enlarged cross-sectional view taken along the line B-B of (a). 3 is a view showing a member relationship in which the latch device is disassembled. Fig. 4 (a) is a schematic view of the cover from the back, copper (b) is a schematic view of the lock lever from the back, copper (c) is a side view of the cover, and (d) is a side view of the lock lever. 5-7 is an operation figure at the time of opening and closing a lid. Hereinafter, the target cold box and the latch device will be described in detail, and then the operation of the lid opening and closing will be described. On the other hand, this form does not limit the present invention.

(Insulated box) The cold box of this form is formed in the box body 1, the lid 2 which opens and closes the opening of the box body 1, and the both sides of the lid 2, The latching part 16 is provided with the latch apparatus 3 which catches and removes the lid 2 from. Among these, the box body 1 is a rectangular three-dimensional shape which is opened upward, and the receiving portion is divided by the long opposing side walls 11 and 11 and the short opposing side walls 12 and 12 and the bottom wall 13. Formed. As for the wall structure, the resin shell body which forms the outline is filled with the heat insulating material 14 (refer FIG. 5), and is relatively thick. On both side walls 11, a step 15 is formed which extends from side to side and lacks an outer edge side of the top surface. In the step 15, the left and right middle portions 15a are slightly lowered. Locking portions 16 are formed on both sides of the intermediate portion 15a. Therefore, the locking parts 16 are formed in two places on one side and four places on both sides. Each locking portion 16 is an example in which the shaft 17 is supported horizontally with respect to the mounting bracket 18, but the mounting portion and the shaft portion may be integrally formed by hard resin or the like. On both side walls 12, there is an inverted concave portion 19a approximately in the middle before and after the lower side, and a small swelling portion 19b is provided in the lacking portion 19a. The small bulging portion 19B is a drain portion for discharging water. In addition, although the installation member which connects a handle | belt, a shawl belt, etc. was abbreviate | omitted on drawing, in fact, in the opposing side wall 12, 12 of the box main body 1, the said installation member etc. are shown in the location of the symbol M of FIG. It is laid.

The lid 2 is sized to integrally block the opening on the box body 1 by the long opposing side walls 21 and 21 and the short opposing side walls 22 and 22 and the upper and lower walls 23 and 24. It is partitioned. As for the wall structure, the resin shell body which forms the outline is filled with the heat insulating material 25 (refer FIG. 5), and is relatively thick. On both side walls 21, mounting portions 26 for latching devices are formed corresponding to the step 15. As illustrated in FIG. 5, each of the mounting portions 26 is provided by the lower thickness 27 of the lower wall 24 approaching the upper wall 23 to the upper wall 23, and the plate thickness of the cover of the upper wall 23. It is formed by the lowered step difference 28. The lower wall 24 is attached with a substantially window frame seal member 29 mounted to face the opening edge of the box body 1. The seal member 29 is the box body 1 in a state in which the lid 2 closes the box body 1 and locks the latch devices 3 on both sides to the corresponding locking portions 16. Is pressed against the edge of the opening to prevent air leakage. As a seal structure, a convex part, an unevenness | corrugation, etc. are provided as needed between the sealing material 29 and the opening edge part of the box main body 1, ie, a contact surface. The above lid 2 has a mounting structure (cap closed state of FIG. 7) closed with the latch device 3 on both sides with respect to the box body 1, and a detachment structure (opening the lid of FIG. 5) which is fully opened. State) and one of the latch devices 3 on both sides can be changed into a one-piece open structure (one-open state shown in Fig. 6) with a rotating hinge.

(Latch Device) The structure of the latch device 3 is hinged so that the lock lever 30 can be rotated by a predetermined angle with the bracket 5 and the shaft 6 interposed between the cover 4. A force is applied in the engagement position direction with the coil-type pressing member 7 interposed therebetween. The cover 4 and the lock lever 30 are resin molded products, and the bracket 5 and the shaft 6 are made of metal. Among them, the cover 4 has a substantially inverted L-shaped longitudinal section, and the outer wall 40 is roughly one surface of the counterpart of the lid 2 with the outer wall 40 mounted on the mounting portion 26 of the lid 2. It is a shape to form. 2-4, the outer wall 40 has both side walls 41 and the opening 42 formed in the lower left and right middle parts, and when it arrange | positions to the installation part 26, the lower side is a lid | cover It extends out below the corresponding part of (2), and the said extension part is size to almost enter into the step | step 15 of the box main body 1. As shown in FIG. On the inner surface (rear surface) of the outer wall 40, horizontal ribs 43 are located on the upper side and connected to both side walls 41, and positioning projections protruding downward from the horizontal ribs 43 on the left and right sides ( 44 and the nail portion 45 protruding inward of the substantially horizontal upper surface 40a constituting the outer wall 40, and located between the upper surface 40a and the horizontal rib 43 and protruding to both sides. The vertical rib 46 and the rib 48 which are located below the horizontal rib 43, and protruded in multiple numbers horizontally and vertically are provided. The horizontal rib 43 forms a space in which the lid side attaching part 26 is inserted between the substantially horizontal top surface 40a of the outer wall 40. The projection 44 positions the bracket 5 for positioning. In other words, the bracket 5 has a substantially "co" shaped cross section and includes a shaft hole 5a formed at both side portions, two mounting holes 5b formed at the middle side portion, and a positioning hole ( 5c) and a substantially semicircular cutout 5d. The bracket 5 can be temporarily mounted in a state in which the hole 5c is engaged with the protrusion 44 with respect to the cover 4. Moreover, the cutout part 5d is for backlash prevention which prevents the inadvertent rotation of the bracket 5 with respect to the counterpart of the cover 4 in a temporary mounting state or the like.

The lock lever 30 is an elongate member whose entirety almost enters the inner surface (back side) of the cover 40. The lock lever 30 is a main body 31 serving as a central portion and an operation portion provided at approximately the bottom left and right of the main body 31. It has 32, the engaging part 33 provided in the both sides below the main body 31, and the longitudinal rib 34 protruding in multiple places from the upper part of the main body 31. As shown in FIG. The operation part 32 is integrated with the main body 31 between the engaging parts 33 of both sides via the longitudinal rib 37a and the cutout part 37b, and also the opening of the cover 4 is carried out. 42 is disposed. On the outer surface of the operation part 32, the recessed part 32a for finger hooks which a fingertip (multiple fingers) enters is formed. The engaging portion 33 is almost L-shaped, and has a vertical piece 33a integrated with the main body 31 and a hook-like nail portion 33b protruding forward and downward from the vertical piece 33a. The nail part 33b is missing the middle part. In each rib 34, a shaft hole 36 through which the shaft 6 is inserted is formed, and an even lower step 35 is formed between the ribs. Moreover, each vertical rib 34 is a stopper in which the upper end prevents excessive rotation in the corresponding inner surface of the cover 4 when the lock lever 30 is pushed inward as shown in the left view of FIG. 6 to open the lid 2. It also functions. The bracket 5 and the pressing member 7 are arranged using the step 35 between the longitudinal ribs 34 in the vicinity of both sides of the main body 31. The bracket 5 is designed such that the shaft hole 5a is arranged side by side on the shaft hole 36 and the pressing member 7 is coaxially arranged on the shaft line 36 with the shaft hole 36. On the other hand, the rear surface of the lock lever 30 is provided with ribs 38 for reinforcement vertically and horizontally, and protrusions 38a for preventing misassembly of the pressing members 7 located near both sides.

(Assembly) Each member is assembled to the cover 4 and is united as the latch device 3. In this assembling operation, the bracket 5 and the pressing member 7 are assembled by attaching the shaft 6 to the lock lever 30 as shown in FIG. For example, the shaft 6 has one end side with respect to the main body 31, the shaft hole 36 of the corresponding longitudinal rib 34, the one shaft hole 5a of the bracket 5, and the pressing member (for example). The inner diameter of the coil of 7) and the other shaft hole 5a of the bracket 5 are inserted in the same order. Thereafter, the assembly is assembled to the cover 4. The trick is that, for example, when the brackets 5 on both sides engage the holes 5c with the protrusions 44 with respect to the cover 4 and temporarily attach them, the shaft 6 has both ends of the cover back side described above. It is restricted to the corresponding ribs 48 and prevents them from escaping. However, this is an example and other assembly procedures may be sufficient.

The unitized latch device 3 is provided with the cover 4 and the bracket 5 interposed with respect to the lid 2. In other words, in this assembling work, the mounting portion 26 of the lid 2 is press-fitted between the upper surface 40a of the cover side and the horizontal rib 43. Thereby, the cover 4 is temporarily attached to the installation part 26 with the said nail part 45 interposed. Thereafter, the cover 4 is fixed to the mounting portion 26 by a set screw between the mounting holes 5b of the bracket 5 and an unshown hole of the horizontal rib 43. In short, the set screw serves as a stop of the cover 4 with respect to the lid 2 and a stop of the bracket 5 with respect to the horizontal rib 43. However, the installation structure may be another configuration. After the latch member 3 is attached to the lid 2 as described above, the pressing member 7 has a lock lever with one end caught on the corresponding portion of the bracket 5 and the other end expressing a spring pressure. It is caught by the back side of (30). Of course, the latch device 3 can be provided on both sides of the lid 2, and since it is unitized, handling and management are easy, and the installation work to the lid 2 can also be easily performed. This is also an excellent point of the latch device 3. In addition, the lid 2 is in the mounting state of the latch device 3, and the cover 4 has one surface with the outer surface of the corresponding portion of the lid 2, and the appearance of the operation part 32 is long. Since it is only exposed to the opening 42 of the cover 4, it is simplified and is excellent also in appearance.

(Operation) The left view of FIG. 5 shows the state of the latch device 3 provided in the lid 2. As for the latch device 3, the lock lever 3 is rotated to the engagement position by the pressing force of the press member 7 as a normal form. In this engagement position, the lower nail portion 33b of the engagement portion 33 fits the inner surface of both side portions 40b of the opening 42 (see FIG. 1) of the outer wall 40 of the cover 1. Reach is regulated. The likelihood in Fig. 5 shows a process of stacking the lid 2 on the box body 1 and closing the lid. In this process, the lock lever 3 abuts on the shaft 17 of the locking portion 16 against the arc-shaped lower surface of the nail portion 33b, and is deep by the stress caused by the abutment (step 15). The back portion of the nail portion 33b passes downward while contacting the back side of the shaft 17 of the locking portion 16. After the passage, the lock lever 3 is rotated to the engaged position by the pressing force of the pressing member 7, and the nail portion 33b is engaged with the shaft 17. As shown in FIG. In addition, in this engagement, after the lid body 1 is loaded with the lid 2, the lid 2 is locked in a locked state (lid installation form) by pressing the lid slightly downward. 6 (a) and 6 (b) show a lid mounting form thereof. In this state, the seal member 29 is press-contacted to the opening edge of the box body 1. Apparently, the step 15 of the box body 1 is covered by the lower side of the outer wall 40 of the cover 4, so that the gap between the operation part 32 and the lower portion 15a is narrower ( The gap where the finger cannot be inserted) and the gap between the nail portion 33b of the engaging portion 33 and the step 15 are similarly narrowed. For this reason, as a cold storage box of this form, compared with the conventional cold storage box, there are few unevenness | corrugations of the outer surface, and it shows the simple design and novel design.

6 (a) and 6 (b) show the process when the lid 2 is removed from the box body 1 or the one side of the latch device 3 is rotated to open. . When removing the lid 2, a plurality of fingers, i.e., fingertips, are inserted into the recessed portions 32a of the operation portion 32 and lifted up in that state. Specifically, the operation unit 32 rotates from the front of the step 15 to the deep side against the pressing force of the pressing member 7, and in conjunction with this, the engaging portion 33 and the nail portion 33b are moved. The engagement of the nail portion 33b with respect to the shaft 17 is released because it rotates in the direction. In this embodiment, as can be seen from the left view of Figs. 6 (a) and 6 (b), the operation unit 32 is moved to the deep side of the step 15, i.e., the inside of the lid 2, when the engagement is released. Therefore, even if the lid 2 is heavy, the lid 2 can be lifted continuously with disengagement. This is not only superior to a few steps better than conventional products by the realization of one-touch operation, but also the spatial constraints included in the problem can be alleviated at the same time by pressing the operation part 32 to the inside of the lid 2 and releasing it. It means you can. In contrast, Fig. 7 shows the above-described open state. When the lid 2 is unopened, only one latch device 3 of the latch devices 3 on both sides is inserted with the plurality of fingers, that is, the fingertips, into the recesses 32a of the operation unit 32 as described above. In the state, and the other latch device 3 is rotated as a rotating hinge.

In addition, the present invention can be modified as necessary with reference to the above-mentioned form, except for the specific requirements in claim 1. As an example, the space S of the present invention is a case where a portion corresponding to the cover 4 of the present embodiment is attached to the corresponding portion of the lid 2. In addition, the latch device of the present invention can be represented as a locking device or a hinge device together with the locking portion provided in the box body 1, and there is no substantial difference.

As described above, the latching device of the cold storage box according to the present invention eliminates the problem of the conventional cold storage box by simply providing a space in the lid, and changing the arrangement and the operation direction of the lock lever and the operation part. It improves the appearance characteristics required for the design and can extend the degree of freedom of design. At the same time, the convenience of use can be improved or improved by removing the restriction of the lid opening operation. In addition, by uniting the cover, the manufacturing process can be simplified, the manufacturing cost can be greatly reduced, and the quality and reliability can be improved.

Claims (6)

A lock lever which is assembled to a lid that opens and closes the opening of the box body and is engaged with and detached from a locking portion provided on the box body, and applies a force in an engagement position in which the lock lever is engaged with the locking portion. A latch device having a pressing member and an operation portion for changing the lock lever from the engaged position to a released position, The lock lever is formed in the lid and is disposed in a space portion into which the locking portion can be inserted inwardly from the lower opening, and in the inner surface direction of the outer side wall portion which forms the space portion by the pressing member. A force is applied, and by pressing the operating portion inward from the outside of the lid, it can rotate against the pressing force of the pressing member and can be changed from the engaging position to the release position. Latch of the box. The method of claim 1, The lock lever is a latching device of a cold storage box, characterized in that the engaging portion which is caught and detached from the engaging portion and the operation portion integrally formed side by side. The method of claim 1, It is provided in the said lid, it has a cover which forms the said space part between the cutout part formed in the corresponding part of the said lid, and the said lock lever, the pressurizing member, and the operation part are arrange | positioned at the said cover, The cold storage box characterized by the above-mentioned. Latch device. The method of claim 3, The cover is formed so as to form an approximately one surface with the side portion of the lid, a part of which is opened, and the operation unit is exposed to the opening, the latching device of the cold box. The method of claim 1, A latching device for a cold storage box, characterized in that the operation portion forms an elongated finger hook recess laterally on the outer surface. The method of claim 5, And a locking hinge for opening and closing the lid in a state where the lock lever is engaged with the locking portion.