CN214273239U - Door locking mechanism and heat preservation device - Google Patents

Abstract

The utility model provides a door body locking mechanism and heat preservation device relates to door latch technical field. The door body locking mechanism of the utility model comprises a rotating part, a firing pin and a rotating shaft which are respectively arranged on the door body and the box body; the rotating piece comprises a rotating body and a force application structure which is convexly arranged on the rotating body, two pivoting groups are arranged on the rotating body, and each pivoting group comprises a rotating shaft combining part and an arc-shaped guide groove; the rotating shaft combining part is suitable for being connected with the rotating shaft, and the arc-shaped guide groove is suitable for rotating around the rotating shaft and is jointed with the striker to close the door body or separated from the striker to open the door body. Door body locking mechanism sets up two pivot groups and makes the rotating member have different mounting means and installation gesture, need not to change the model of rotating member and can solve the not enough problem of installation space.

Description

Door locking mechanism and heat preservation device

Technical Field

The utility model relates to a door latch technical field particularly, relates to a door body locking mechanism and heat preservation device.

Background

The door locking mechanism is used for opening or closing the door, and generally comprises a rotating part with a handle, wherein the handle can play a lever role and can obviously reduce the force required by opening or closing the door, and particularly in a heat preservation device such as an ultra-low temperature refrigerator, the locking force of the door locking mechanism is large in order to keep the door seam locked, so that the door can be opened or closed conveniently due to the existence of the handle. However, a certain space requirement is caused for the use of the heat preservation device or the door body, and when the installation space is insufficient, the model of the rotating piece needs to be replaced, so that the application of the door body locking mechanism is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the not enough of door body locking mechanism's in the correlation technique design existence to a certain extent, especially when the mounted position is not enough, need with the problem of remodelling jig.

In order to solve at least part of the problems, the utility model provides a door locking mechanism, which comprises a rotating part, a firing pin and a rotating shaft, wherein the firing pin and the rotating shaft are respectively arranged on a door body and a box body;

the rotating piece comprises a rotating body and a force application structure which is convexly arranged on the rotating body, two pivoting groups are arranged on the rotating body, and each pivoting group comprises a rotating shaft combining part and an arc-shaped guide groove; the rotating shaft combining part is suitable for being connected with the rotating shaft, and the arc-shaped guide groove is suitable for rotating around the rotating shaft and is jointed with the striker to close the door body or separated from the striker to open the door body.

Optionally, the rotating shaft combining part and the arc-shaped guide groove of different pivoting groups are adjacently arranged.

Optionally, the arc-shaped guide groove comprises a limiting groove, the limiting groove is suitable for limiting and matching with the striker to lock the door body, and the positions of the limiting groove and the position of the rotating shaft combining part of different pivoting groups correspond to each other.

Optionally, the rotating shaft combining part comprises a mounting hole, and the mounting hole is arranged at the bottom of the arc-shaped guide groove.

Optionally, the arc-shaped guide groove comprises a limiting groove and a guide groove, the limiting groove is in limiting fit with the striker, and the guide groove is suitable for guiding the striker into or out of the limiting groove in a sliding manner.

Optionally, a groove structure is further disposed on the rotating body, the groove structure is at least partially located between the two arc-shaped guide grooves, and the groove structure is communicated with one or two of the arc-shaped guide grooves.

Optionally, the striker includes a striker body and a rotating body connected to the striker body, and the rotating body is a second shaft sleeve or a bearing; and/or the rotating shaft combining part comprises a mounting hole and a first shaft sleeve positioned in the mounting hole, and the first shaft sleeve is rotatably connected with the rotating shaft.

Optionally, the door body further comprises a rotation limiting structure, and the rotation limiting structure is suitable for limiting the position of the rotating member when the rotating member rotates around the rotating shaft and opens the door body.

Optionally, the corner limiting structure includes a limiting member and a positioning groove, the limiting member and the positioning groove are respectively disposed on the rotating shaft and the rotating shaft combining portion, the limiting member is movably accommodated in the positioning groove along the rotating direction of the rotating member, and when the rotating member rotates around the rotating shaft to open the door body, the limiting member interacts with a side wall of the positioning groove to limit the position of the rotating member.

The utility model has the advantages as follows:

the utility model discloses a door body locking mechanism, the application of force in the application of force structure in order to open or close a body, opening or closing of the door body is more laborsaving, through setting up two pivot groups, every pivot group realizes the locking between the door body and the box including pivot joint portion and arc guide slot, is particularly suitable for occasions such as sealed and heat preservation, and two pivot groups make the rotating member have different mounting means and installation gesture, need not to change the model of rotating member, can solve the not enough problem of installation space, and suitability and practicality are strong.

The utility model discloses another aspect provides a heat preservation device, including above-mentioned arbitrary door body locking mechanism. The heat preservation device has all the beneficial effects of the door body locking mechanism, and the detailed description is omitted here.

Drawings

Fig. 1 is a schematic structural view of a door locking mechanism in a state where a striker and an arc-shaped guide groove are separated according to an embodiment of the present invention;

fig. 2 is an explosion structure diagram of the door body locking mechanism in the joint state of the striker and the limiting groove in the embodiment of the present invention;

fig. 3 is another schematic diagram of an explosion structure of the door locking mechanism according to the embodiment of the present invention;

fig. 4 is a rear view of the door locking mechanism in a state where the striker and the arc-shaped guide groove are separated according to the embodiment of the present invention;

FIG. 5 is a bottom view of the door locking mechanism of FIG. 4;

FIG. 6 is a cross-sectional view of section A-A of FIG. 5;

fig. 7 is a partial enlarged view at a in fig. 6.

Description of reference numerals:

1-rotating body, 11-rotating shaft joint part, 111-mounting hole, 1111-limiting surface structure, 112-first shaft sleeve, 1121-contact surface structure, 12-arc guide groove, 121-limiting groove, 122-guide groove, 13-groove structure, 14-pivoting group, 15-opening structure, 16-cam surface structure, 161-first arc surface structure, 162-second arc surface structure, 163-third arc surface structure, 17-corner limiting structure, 171-limiting part, 1711-first side wall, 1712-second side wall, 172-positioning groove, 2-force application structure, 3-firing pin, 31-firing pin body, 311-firing pin seat plate, 32-second shaft sleeve, 33-first limiting structure, 331-pressing plate, 332-first screw, 4-rotating shaft, 41-rotating shaft seat plate and 5-mounting base.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the terms "an embodiment," "one embodiment," "some embodiments," "exemplary" and "one embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the drawings, the Z-axis represents the vertical, i.e., up-down, position, and the positive direction of the Z-axis (i.e., the arrow of the Z-axis points) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; in the drawings, the X-axis represents a horizontal direction and is designated as a left-right position, and a positive direction of the X-axis (i.e., an arrow direction of the X-axis) represents a right side and a negative direction of the X-axis (i.e., a direction opposite to the positive direction of the X-axis) represents a left side; in the drawings, the Y-axis indicates the front-rear position, and the positive direction of the Y-axis (i.e., the arrow direction of the Y-axis) indicates the front side, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) indicates the rear side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

As shown in fig. 1 and 6, an embodiment of the present invention provides a door locking mechanism, including a rotating member, a striker 3 disposed on one of a door body (not shown) and a box body (not shown), and a rotating shaft 4 disposed on the other of the door body and the box body, wherein the striker 3 and the rotating shaft 4 are disposed at intervals, and the installation positions of the striker 3 and the rotating shaft 4 are interchangeable;

the rotating part comprises a rotating body 1 and a force application structure 2 which is convexly arranged on the rotating body 1, two pivoting groups 14 are arranged on the rotating body 1, and each pivoting group 14 comprises a rotating shaft joint part 11 and an arc-shaped guide groove 12; the rotating shaft combining part 11 is adapted to be connected with the rotating shaft 4, and the arc-shaped guide groove 12 is adapted to rotate around the rotating shaft 4 and engage with the striker 3 to close the door body or disengage from the striker 3 to open the door body.

It should be noted that the door body may be opened and closed in a rotating manner or in a sliding manner, that is, the door body may be a rotating door or a sliding door, taking the case that the door body is opened and closed in a rotating manner, and a rubber pad or other structures for isolating and preserving heat are arranged at a door seam between the box body and the door body. When the striker 3 engages with the arc-shaped guide groove 12, the distance in the X-axis direction between the striker 3 and the rotary shaft 4 changes, thereby opening or closing the door body. It should be understood that, during the rotation of the rotating member, the movement of the striker 3 or the rotating shaft 4 can be understood as approximately translating in the X-axis direction, and in this specification, the striker 3 is disposed on a door body (not shown), and the rotating shaft 4 is disposed on a box body (not shown) as an example (at this time, a handle for applying force is generally disposed on the door body additionally), so as to describe the content of the present invention, and the following detailed description is not repeated.

It should be noted that in the drawings of the present specification, the arc-shaped guide grooves 12 of the different pivot groups 14 are communicated by the groove structure 13, and the arc-shaped guide grooves 12 only remain the outer side wall, that is, the arc-shaped guide grooves 12 are not shown in the groove structure, which will be described in detail later.

It should be noted that, while the description of the pivot joint 11, the arc-shaped guide groove 12, the striker 3 and the pivot shaft 4 refers to two pivot groups 14, those skilled in the art should understand from the description whether they are directed to the same pivot group 14 or to different pivot groups 14, and generally, to the same pivot group 14 without violating the foregoing description or without being explicitly limited.

As shown in fig. 1, in order to facilitate the striker 3 to enter or leave the arc-shaped guide slot 12, an opening structure 15 is provided on the rotating body 1, and the opening structure 15 is communicated with one end of the arc-shaped guide slot 12 away from the rotating shaft combining part 11 of the same pivoting group 14; alternatively, the arc-shaped guide groove 12 is provided with an opening for the striker 3 to slide in and out.

It should be noted that the force application structure 2 is used for applying force to perform a leverage effect, and is suitable for handheld force application, for example, the force application structure 2 is a handle, or the force application structure 2 is suitable for being connected with a motor or other driving structures to drive a rotating member to rotate; the force application structure 2 is exemplarily arranged to protrude from the rotating body 1 along a first direction, and the first direction is arranged at a predetermined angle with respect to the axial direction of the rotating shaft 4, for example, the first direction is parallel or approximately parallel to the radial direction of the rotating shaft 4, which will be described later. In this specification, the contents of the present invention will be described by taking as an example that the door body is locked, the first direction is the Z-axis direction, the force application structure 2 is located in the Z-axis forward direction of the rotating body 1, and the rotating shaft 4 is located in the X-axis forward direction of the striker 3. However, it is not limited thereto and will not be described in detail here.

The working mode of the door body locking mechanism is as follows: the force is applied to the force application structure 2, so that the rotating member rotates around the rotating shaft 4, the firing pin 3 slides into the arc-shaped guide groove 12 from the opening structure 15, the distance between the firing pin 3 and the rotating shaft 4 is gradually reduced in the process that the firing pin 3 moves in the arc-shaped guide groove 12, the rubber pad is gradually compressed, the purpose of sealing and heat preservation is achieved, after the rotating member rotates to a position around the rotating shaft 4, a stable stress state is achieved among the rotating member, the rotating shaft 4 and the arc-shaped guide groove 12, the rotating member keeps a locking state, and the door body is in a locking state; the process of opening the door is the reverse and will not be described in detail here.

The benefit that sets up like this lies in, the application of force in application of force structure 2 in order to open or close a body, and opening or closing of a body is more laborsaving, through setting up two pivot groups 14, every pivot group 14 includes pivot joint portion 11 and arc guide slot 12, realizes the locking between a body and the box, is particularly suitable for occasions such as sealed and heat preservation, and two pivot groups 14 make the rotating member have different mounting means and installation gesture, can solve the not enough problem of installation space through changing pivot group 14 to a certain extent, and suitability and practicality are strong.

As shown in fig. 1 and 6, in the embodiment of the present invention, the rotation shaft combining portion 11 and the arc-shaped guide groove 12 of the pivot group 14 are disposed adjacent to each other.

For example, in fig. 6, the pivot group 14 where the pivot shaft coupling portion 11 connected to the pivot shaft 4 is located is a first pivot group, and the other pivot group 14 is a second pivot group, the pivot shaft coupling portion 11 of the first pivot group may be located inside or outside the arc-shaped guide slot 12 of the second pivot group and adjacent to the arc-shaped guide slot 12, or may be located in an area covered by the arc-shaped guide slot 12 of the second pivot group, where the inside is a side close to the center of the rotating body 1, and the outside is a side away from the center of the rotating body 1. Illustratively, the point on the arcuate guide slot 12 of the second pivot group closest to the pivot joint 11 of the first pivot group is spaced from the pivot joint 11 of the first pivot group by a distance of 0-30 mm, e.g., 5 mm or 10 mm.

This arrangement has an advantage that the positions of the rotating shaft coupling portion 11 and the arc-shaped guide groove 12 of the different pivot groups 14 are arranged adjacently, and when the different pivot groups 14 are used, the spatial position of the rotating member has a large difference, for example, when the mounting positions of the striker 3 and the rotating shaft 4 are interchanged and the pivot groups 14 are switched, the position of the force application structure on the rotating member is changed greatly, and the applicability is stronger.

As shown in fig. 2, in the embodiment of the present invention, the arc-shaped guide slot 12 includes a limiting groove 121, and the limiting groove 121 is adapted to be in limiting fit with the striker 3 to lock the door body, except that the positions of the limiting groove 121 of the pivoting group 14 and the rotating shaft combining portion 11 correspond to each other. That is, the position of the limiting groove 121 of the first pivoting group is adjacent to the position of the rotating shaft combining part 11 of the second pivoting group.

As shown in fig. 2 and 3, the rotation shaft combining portion 11 exemplarily includes a mounting hole 111, the mounting hole 111 and the striker 3 are coaxially disposed when the door body is in the closed state, and the striker 3 is located in the limiting groove 121 when the door body is in the locked state, and the force application structure 2 exemplarily is provided with a force application point for applying force, and the force application point, the rotation shaft 4 and the striker 3 form an acute triangle, such as an isosceles triangle, in a cross section of the rotation shaft, and the force application point is located at a vertex angle.

The advantage that sets up like this lies in, can avoid increasing the size of rotating member, avoid increasing the demand of installation space, and, after exchanging the mounted position of striker 3 and pivot 4 and switching pivot group 14, when the door body is in the locking state, the position of application of force structure 2 is unanimous with the position primary position before switching, when the door body is in the open mode, the position of application of force structure 2 and the position primary position before switching are opposite, two kinds of almost opposite spatial position can be got in the setting of pivot group 14, can satisfy most door body locking demands, application scope is wide, therefore, the clothes hanger is strong in practicability.

As shown in fig. 2, in the above embodiment, the rotating shaft combining part 11 includes the mounting hole 111, and the mounting hole 111 is disposed at the bottom of the arc-shaped guide groove 12. For example, the position of the mounting hole 111 corresponds to the position of the limiting groove 121, the mounting hole 111 is located at the bottom of the limiting groove 121, and the mounting hole 111 is used for mounting the rotating shaft 4.

The advantage that sets up like this has avoided increasing the circumference size of rotating member, avoids increasing the installation space of rotating member, and the pivot joint portion 11 and the arc guide slot 12 mutual noninterference of different pivot group 14, and door body locking mechanism compact structure, the practicality is strong.

As shown in fig. 2, in the above embodiment, the arc-shaped guide slot 12 includes a limiting groove 121 and a guide groove 122, the limiting groove 121 and the striker 3 are in limiting fit, and the guide groove 122 is adapted to slidably guide the striker 3 into or out of the limiting groove 121.

In the same pivot group 14, the closer the arc-shaped guide groove 12 is to the rotation shaft coupling portion 11, the smaller the distance from the rotation shaft coupling portion 11. Therefore, in the process of closing the door body, the distance between the striker 3 and the rotating shaft 4 gradually decreases, and when the striker 3 slides for a certain distance and reaches the position of the limiting groove 121, before the door body is closed, the striker 3 passes through a large resistance point, which may be a limiting protrusion (or a damping protrusion) disposed on the inner wall of the arc-shaped guide slot 12, at which the gap between the door body and the cabinet is minimized, and the compression degree of the door seam strip is maximized, and when the striker 3 passes through the resistance point, the door body is closed, and the position of the door body is kept locked by the resistance point, which is located at the connection position of the limiting groove 121 and the guide groove 122.

As shown in fig. 3, for example, in the same pivoting group 14, the arc-shaped guide groove 12 includes a cam surface structure 16 (or a curved surface structure) for engaging with the striker 3, the cam surface structure 16 is located at an outer side wall of the arc-shaped guide groove 12, that is, a side wall far away from the rotation shaft engaging portion 11, the cam surface structure 16 includes a first arc-shaped structure 161, a second arc-shaped structure 162 and a third arc-shaped structure 163 which are connected in sequence, and a distance between the third arc-shaped structure 163 and the rotation shaft engaging portion 11 is smaller than a distance between the first arc-shaped structure 161 and the rotation shaft engaging portion 11 and is greater than or equal to a distance between the second arc-shaped structure 162 and the rotation shaft engaging portion 11, where a distance between each arc-shaped structure and the rotation shaft engaging portion 11 can also be understood as a distance from the rotation shaft 4 or a distance from an axis of the mounting hole 111. The second arc-shaped structure 162 protrudes to a side close to the rotating shaft combining portion 11, the first arc-shaped structure 161 is used for capturing the striker 3, when the door body is in a closed state, the striker 3 is combined with the third arc-shaped structure 163, at this time, the third arc-shaped structure 163 and the second arc-shaped structure 162 form the limiting groove 121, and of course, each arc-shaped structure may also be an inclined surface structure, which will not be described in detail herein.

The advantage of this setting is that, through guide slot 122 with firing pin 3 slip leading-in or derive the spacing groove 121, the door body is in the process of opening and closing, firing pin 3 atress is stable for firing pin 3's motion is comparatively reliable and stable, has avoided violent striking, and security and stability are high.

As shown in fig. 1, in the embodiment of the present invention, a groove structure 13 is further disposed on the rotating body 1, the groove structure 13 is at least partially located between two arc-shaped guide grooves 12, and the groove structure 13 is communicated with one or two arc-shaped guide grooves 12.

It should be noted that the groove structure 13 may be located at the top of the rotating body 1, or may be located at the bottom of the rotating body 1 (where the top refers to a side of the rotating body 1 away from the rotating shaft in the thickness direction, and the bottom refers to a side of the rotating body 1 close to the rotating shaft 4 in the thickness direction), for example, the rotating shaft combining portion 11, the arc-shaped guide groove 12, and the groove structure 13 are all located at the bottom of the rotating body 1, and the groove structure 13 communicates with two arc-shaped guide grooves 12. The arc-shaped guide grooves 12 are close to the side wall of the same pivoting group 14 and are all covered by the area where the groove structure 13 and the arc-shaped guide groove 12 are communicated, or the groove structure 13 and the two arc-shaped guide grooves 12 form a cavity, the side wall of the cavity is provided with an opening structure 15 for the entering or the exiting of the firing pin, the side walls on the cavity at the two sides of the opening structure 15 are respectively the outer side walls of the two arc-shaped guide grooves 12 (at this time, the inner side walls of the arc-shaped guide grooves 12 do not exist or are completely cut off), and for example, the side walls oppositely arranged on the cavity are cam surface structures 16. At this time, the rotating body 1 may be integrally formed, for example, integrally extrusion-molded or cast-molded using an aluminum alloy.

As shown in fig. 1, the groove structure 13 may be a stepped groove, which can play a role in reducing weight and avoiding a position, the groove structure 13 may be a penetrating structure along the thickness direction of the rotating body 1, and in some embodiments, the arc-shaped guide groove 12 may also be a penetrating structure, which will not be described in detail herein.

The advantage of this is that by providing the groove structure 13, the weight of the rotating member is reduced, material is saved, the amount of machining of the arc-shaped guide groove 12 can be reduced, cost is saved, and in addition, an installation space and/or an operation space for installing other structures is given to a certain extent.

As shown in fig. 3, in the embodiment of the present invention, the striker 3 includes a striker body 31 and a rotating body connected to the striker body 31, and the rotating body is a second sleeve 32 or a bearing; and/or the rotating shaft combining part 11 comprises a mounting hole 111 and a first shaft sleeve 112 positioned in the mounting hole 111, and the first shaft sleeve 112 is rotatably connected with the rotating shaft 4.

Exemplarily, the door body locking mechanism further includes a clamp spring (not shown in the figure), a second clamping groove (not shown in the figure) for accommodating an inner ring of the clamp spring is arranged on the rotating shaft 4, a first clamping groove (not shown in the figure) for accommodating an outer ring of the clamp spring is arranged on an inner side wall of the first shaft sleeve 112, and the rotating shaft 4 and the first shaft sleeve 112 are positioned in the axial direction of the rotating shaft 4 through cooperation of the clamp spring, the first clamping groove and the second clamping groove.

As shown in fig. 3, the door locking mechanism further includes a first limiting structure 33, the first limiting structure 33 is connected with the striker body 31, and the first limiting structure 33 limits the second shaft sleeve 32 to be separated from the striker body 31 along the axial direction of the striker body 31; the striker body 31 is of a stepped shaft structure, the stepped shaft structure comprises a first shaft section and a second shaft section, the first shaft section penetrates through the inner wall of the second shaft sleeve 32, the diameter of the second shaft section is larger than that of the first shaft section and smaller than the outer diameter of the second shaft sleeve 32, the first limiting structure 33 comprises a pressing plate 331, the pressing plate 331 is detachably connected with one end, away from the second shaft section, of the first shaft section, and the distance between the pressing plate 331 and the end face of the second shaft section is slightly larger than the length of a hole section, matched with the first shaft section, in the second shaft sleeve 32; the pressing plate 331 is mounted on the end surface of the first shaft section by the first screw 332, for example, and the length of the first shaft section is slightly larger than that of the hole section of the second sleeve 32 that is engaged with the first shaft section, so that the second sleeve 32 can rotate on the striker body 31 and the position in the axial direction of the striker body 31 is kept substantially constant.

In some embodiments, the first sleeve 112 and the mounting hole 111 are tightly fitted or locked in position by other structures, which will be described later.

In some embodiments, in order to reduce the size of the striker 3, the striker body 31 and the bearings may be provided with rod bearings, such as CF bearings, to reduce the difficulty of machining, which will not be described in detail herein.

In order to maintain good rotational stability, the striker body 31 and the second sleeve 32 should be kept locked in position in the axial direction of the striker body 31, the mounting hole 111 and the first sleeve 112 should be kept locked in position in the axial direction of the first sleeve 112, and the first sleeve 112 and the rotary shaft 4 should be kept locked in position in the axial direction of the rotary shaft 4. The structure for keeping the position thereof locked is similar and has been described above by way of example and will not be described any further. In other embodiments, the rotation shaft 4 is directly rotatably connected to the mounting hole 111, and the position locking structure may be similar to this.

The arrangement has the advantages that the arrangement of the rotator enables the joint of the firing pin 3 and the arc-shaped guide groove 12 to be stable, avoids serious abrasion of the firing pin 3 and prolongs the service life; and/or, the first shaft sleeve 112 is arranged, so that the rotating connection between the rotating shaft combining part 11 and the rotating shaft 4 is more stable, the service life is long, and the practicability is strong.

As shown in fig. 6 and 7, in the embodiment of the present invention, the door further includes a corner limiting structure 17, and the corner limiting structure 17 is adapted to limit the position of the rotating member when the rotating member rotates around the rotating shaft 4 and opens the door body.

Illustratively, the rotation angle limiting structure 17 comprises springs (not shown in the figures), which are respectively connected with the rotating shaft 4 (or the rotating shaft seat plate 41) and the rotating member, wherein when the rotating member rotates around the rotating shaft 4 to open the door body, the elastic potential energy of the springs is increased, and when the rotating member rotates around the rotating shaft 4 to close the door body, the elastic potential energy of the springs is decreased; the spring may be a tension spring or a torsion spring, which will not be described in detail herein.

For example, the corner limiting structure 17 may be a magnetic attraction structure, two magnetic attraction members are respectively disposed on the rotating shaft seat plate 41 and the rotating member, and when the door body is in the open state, the positions of the two magnetic attraction members correspond to each other to maintain the position of the rotating member; of course, another set of magnetic attraction pieces can be provided to enhance the locking force of the rotation piece when the door body is in the closed state, and will not be described in detail here.

Illustratively, the rotation angle limiting structure 17 may be a limiting block disposed on the rotation shaft seat plate 41, and when the rotating member rotates around the rotation shaft 4 to open the door body, the limiting block is located on a movement path of the rotating member, and when the door body is in an open state, the rotating member keeps contact with the limiting block under the action of gravity or other forces.

The benefit that sets up like this lies in, under corner limit structure 17's effect, when the door body is in the open mode, the position of rotating member is preserved unchangeably, makes preparation for the closing process of the door body, simple structure, and the practicality is strong.

As shown in fig. 6 and 7, the corner limiting structure 17 includes a limiting member 171 and a positioning groove 172, the limiting member 171 and the positioning groove 172 are respectively disposed on the rotating shaft 4 and the rotating shaft combining portion 11, the limiting member 171 is movably accommodated in the positioning groove 172 along the rotating direction of the rotating member, and when the rotating member rotates around the rotating shaft 4 to open the door body, the limiting member 171 and the side wall of the positioning groove 172 interact with each other to limit the position of the rotating member.

Specifically, the limiting member 171 is disposed on one of the rotating shaft 4 and the rotating shaft combining portion 11, and the positioning groove 172 is disposed on the other of the rotating shaft 4 and the rotating shaft combining portion 11. As shown in fig. 7, the following description will be made by taking the case that the rotating shaft combining portion 11 includes the mounting hole 111 and the first sleeve 112 located in the mounting hole 111, the limiting member 171 is disposed on the rotating shaft 4, and the positioning groove 172 is disposed on the first sleeve 112:

the limiting member 171 is a limiting rib disposed on an axial sidewall of the rotating shaft 4, or the limiting member 171 is detachably connected to the rotating shaft 4 (not shown in the figure), for example, the limiting member 171 is a screw, the screw is in threaded connection with a threaded through hole structure radially disposed on the rotating shaft 4, and one end of the screw is received in the positioning groove 172.

As shown in fig. 7, for example, in the rotation direction of the rotating member, the positioning slot 172 includes a first side wall 1711 and a second side wall 1712, and when the door body is in the open state, the first side wall 1711 interacts with the limiting member 171; when the door body is in the closed state, the second side wall 1712 interacts with the limiting member 171.

It should be noted that there are many ways of interaction between the first side wall 1711 and the limiting member 171, for example, the first side wall 1711 and the second side wall 1712 are respectively provided with a slot for engaging with the limiting member 171, or a magnetic attraction member is disposed on the first side wall 1711 and the second side wall 1712 corresponding to the position of the limiting member 171.

In some embodiments, when the door body is in the closed state, the force application structure is located above the rotating body 1, the first direction is parallel or approximately parallel to the Z-axis forward direction, and when the door body is in the open state, the force application structure is inclined (as shown in fig. 4-7), the first direction is inclined to the Z-axis forward direction, for example, the first direction is inclined to the Z-axis forward direction by an angle of 30 ° to 135 °, for example, 45 °, 60 ° or 90 °, and under the action of gravity, the stopper 171 is in contact with the first side wall 1711.

It should be noted that, at this time, the position of the first shaft sleeve 112 in the mounting hole 111 should be kept locked, for example, the first shaft sleeve 112 is pressed by a second screw (not shown in the figure) in threaded connection with the rotating body 1, at this time, a limiting hole or a contact surface structure 1121 for contacting with the second screw may be disposed on the first shaft sleeve 112, and when the contact surface structure 1121 is disposed on the first shaft sleeve 112, a limiting surface structure 1111 corresponding to the contact surface structure 1121 is disposed on the inner wall of the mounting hole 111, so that after the shaft sleeve is disassembled and assembled, the mounting orientation of the first shaft sleeve 112 can be quickly aligned, and a fool-proof effect can be achieved, and quick mounting can be achieved. It should be noted that, at this time, the groove structure 13 may be used to avoid the detachment and installation of the second screw, or the second screw removing direction is directed to the groove structure 13, and/or the second screw removing direction is directed to the groove structure 13 and the opening structure 15, so as to facilitate the insertion of a tool such as a screwdriver or a wrench, which is not limited to this, for example, the second screw may be disposed on the circumferential side wall of the rotating member.

In some embodiments, the limiting member 171 is a third screw (not shown in the drawings) in threaded connection with the rotating body 1, the third screw protrudes from the rotating shaft combining portion 11 (for example, the mounting hole 111 is arranged at a distance), the circumferential side wall of the rotating shaft 4 is provided with a positioning groove 172, the third screw is accommodated in the positioning groove, and the third screw and the positioning groove 172 can both lock the position of the rotating shaft 4 and the rotating shaft combining portion 11 along the axial direction of the rotating shaft 4 (not shown in the drawings, in this case, the positioning groove 172 should be an annular groove section opened in the circumferential direction of the rotating shaft, and the central angle of the annular groove section is less than 180 °), and can also limit the rotation angle of the rotating member, which will not be described in detail herein.

As shown in fig. 7, it should be noted that, in the above embodiment, when the installation positions of the rotating shaft 4 and the firing pin 3 are interchanged, if the same first bushing 112 is required, the number of the positioning slots 172 on the first bushing 112 may be changed as required, or the installation orientations of the different sets of the installation holes 111 and the first bushing 112 may be changed adaptively, so as to use the same bushing, which will not be described in detail herein.

The advantage that sets up like this lies in, through setting up locating part 171 and constant head tank 172, need not to establish other structures in addition and can prescribe a limit to the rotational position of rotating member, and is spacing reliable to, the mounting structure of pivot and pivot joint portion 11 is compact, and occupation space is little, and the practicality is strong.

As shown in fig. 3, 4 and 5, in the above embodiment, the door locking mechanism further includes two mounting bases 5, where the two mounting bases 5 are respectively connected to the door and the cabinet, the door locking mechanism further includes a striker base plate 311 for connecting to the mounting base 5 and a rotating shaft base plate 41 for connecting to the mounting base 5, the rotating shaft 4 and the rotating shaft base plate 41 are integrally connected or detachably connected, and the striker 3 and the striker base plate 311 are integrally connected or detachably connected.

Illustratively, the striker holder plate 311 and the shaft holder plate 41 have the same mounting structure, and when the shaft 4 and the striker 3 need to be exchanged, the mounting base 5 does not need to be replaced, thereby reducing the complexity of the operation, and illustratively, the mounting base 5 is a mounting plate, and the mounting plate is connected with the door body or the box body through a plurality of fasteners, which will not be described in detail herein.

In the above embodiment, the rotating member may be integrally formed as a frame-type structure (for example, an arc-shaped guide groove and/or a groove structure penetrating the rotating body 1 in the thickness direction of the rotating body 1), and the outer portion thereof is covered with a housing, which will not be described in detail herein.

Another embodiment of the utility model provides a heat preservation device, this heat preservation device include the door body locking mechanism of above-mentioned arbitrary item. The insulating device may be a refrigeration apparatus, such as a medical cryocooler, freezer or freezer for storing biological products such as plasma, vaccines, etc. The heat preservation device has all the beneficial effects of the door body locking mechanism, and the detailed description is omitted here.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (10)

1. A door body locking mechanism is characterized by comprising a rotating piece, a firing pin (3) and a rotating shaft (4), wherein the firing pin and the rotating shaft are respectively arranged on a door body and a box body;

the rotating piece comprises a rotating body (1) and a force application structure (2) which is convexly arranged on the rotating body (1), two pivoting groups (14) are arranged on the rotating body (1), and each pivoting group (14) comprises a rotating shaft joint part (11) and an arc-shaped guide groove (12); the rotating shaft combining part (11) is suitable for being connected with the rotating shaft (4), and the arc-shaped guide groove (12) is suitable for rotating around the rotating shaft (4) and is jointed with the striker (3) to close the door body or separated from the striker (3) to open the door body.

2. The door body locking mechanism according to claim 1, wherein the pivot shaft engaging portions (11) and the arc-shaped guide grooves (12) of different pivot groups (14) are adjacently disposed.

3. The door body locking mechanism according to claim 2, characterized in that the arc-shaped guide groove (12) comprises a limiting groove (121), the limiting groove (121) is suitable for limiting and matching with the striker (3) to lock the door body, and the position of the limiting groove (121) of the different pivoting group (14) corresponds to the position of the rotating shaft combining part (11).

4. The door body locking mechanism according to claim 1, wherein the rotating shaft combining part (11) comprises a mounting hole (111), and the mounting hole (111) is arranged at the bottom of the arc-shaped guide groove (12).

5. The door body locking mechanism according to claim 1, wherein the arc-shaped guide groove (12) comprises a limiting groove (121) and a guide groove (122), the limiting groove (121) is in limiting fit with the striker (3), and the guide groove (122) is suitable for guiding the striker (3) into or out of the limiting groove (121) in a sliding manner.

6. The door body locking mechanism according to any one of claims 1 to 5, characterized in that a groove structure (13) is further disposed on the rotating body (1), the groove structure (13) is at least partially located between the two arc-shaped guide grooves (12), and the groove structure (13) is communicated with one or two arc-shaped guide grooves (12).

7. The door locking mechanism according to claim 1, wherein the striker (3) comprises a striker body (31) and a rotating body connected with the striker body (31), wherein the rotating body is a second shaft sleeve (32) or a bearing; and/or the rotating shaft combining part (11) comprises a mounting hole (111) and a first shaft sleeve (112) positioned in the mounting hole (111), and the first shaft sleeve (112) is rotatably connected with the rotating shaft (4).

8. The door locking mechanism according to any one of claims 1-5 and 7, further comprising a corner limiting structure (17), wherein the corner limiting structure (17) is adapted to limit the position of the rotating member when the rotating member rotates around the rotating shaft (4) and opens the door body.

9. The door locking mechanism according to claim 8, wherein the corner limiting structure (17) comprises a limiting member (171) and a positioning groove (172), the limiting member (171) and the positioning groove (172) are respectively disposed on the rotating shaft (4) and the rotating shaft combining portion (11), the limiting member (171) is movably received in the positioning groove (172) along the rotating direction of the rotating member, and when the rotating member rotates around the rotating shaft (4) to open the door, the limiting member (171) and the side wall of the positioning groove (172) interact with each other to limit the position of the rotating member.

10. An insulating device, characterized by comprising the door body locking mechanism according to any one of claims 1 to 9.

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