CN108756461B - Power-assisted door handle assembly and refrigeration equipment - Google Patents

Abstract

The invention discloses a power-assisted door handle assembly and refrigeration equipment, comprising a bracket, a handle, a push rod and a return spring arranged on the bracket. Both ends of the handle are respectively provided with cams. The push rod is a four-section structure. When the handle is in an unopened state, the end point of the short half shaft of the cam is closer to the fourth push rod segment than the end point of the long half shaft. When the handle is pulled, the circumferential end face of the cam abuts against the end of the fourth push rod segment. As the handle continues to be pulled, the short semi-axis end point of the cam gradually moves away from the fourth push rod segment, and the long semi-axis end point gradually approaches the fourth push rod segment. The push rod section pushes the fourth push rod section and the entire push rod to move in the direction close to the box body, and at the same time the return spring shrinks; continue to pull the handle until the end of the first push rod section abuts against the box body, by acting on the The force on the box body overcomes the pressure difference between the inside and outside of the storage room of the refrigeration equipment, so that the door can be easily opened. After the handle is released, the return spring resets, driving the assist handle assembly to reset.

Description

Power door handle assembly and refrigeration equipment

technical field

The invention relates to the technical field of door handles of refrigeration equipment, in particular to a power-assisted door handle assembly and refrigeration equipment.

Background technique

The door and the box of refrigeration equipment such as refrigerators or vertical freezers are generally sealed by magnetic sealing strips to prevent the cold air in the storage room from leaking out, so as to ensure the cooling effect. However, when the door is opened, due to the pressure difference between the inside and outside of the storage room, under the combined action of negative pressure and magnetic force, it is laborious to open the door. Some existing handles with power assist structures generally have complex structures.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is as follows: the present invention proposes a power-assisted door handle assembly and a refrigeration device, which are simple in structure, easy to implement, and easy to open the door body.

The technical solution provided by the present invention is a power-assisted door handle assembly and refrigeration equipment, including a bracket, a handle, a push rod and a return spring; the handle is rotatably connected to the bracket, and both ends of the handle are respectively provided with a cam; a pin A is provided on the bracket, and the push rod is sleeved on the pin A and reciprocates along the pin A; the return spring is used to apply the power to the door handle assembly reset force; the handle, the push rod and the reset spring are configured such that when the handle is pulled, the circumferential end face of the cam abuts one end of the push rod, pushing the push rod along the The pin A moves toward the direction close to the box body of the refrigeration equipment until it abuts against the box body, and the return spring contracts; when the handle is released, the return spring returns to drive the power door. The handle assembly is reset.

Further, the cam is a disk-shaped cam, and when the handle is in an unopened state, the end point of the short semi-axis of the disk-shaped cam is closer to the end of the push rod than the end point of the long semi-axis; when When the handle is in the open state, the end point of the long semi-axis of the disc cam is closer to the end of the push rod than the end point of the short semi-axis.

Further, the push rod includes a first push rod section, a second push rod section, a third push rod section and a fourth push rod section that are connected in sequence, and the third push rod section is vertically arranged on the first push rod section. Between the rod section and the second push rod section, the fourth push rod section is vertically arranged at the end of the second push rod section and is on the same side as the third push rod section; The third push rod segment is provided with a through hole A, and the pin shaft A is inserted into the through hole A; when the handle is pulled, the end point of the long semi-axis gradually moves away from the fourth push rod segment, The end point of the short semi-axis gradually approaches the fourth push rod segment, and the end of the first push rod segment abuts against the box body.

Further, the bracket is provided with a first limiting portion for limiting the position of the first push rod segment and a second limiting portion for limiting the position of the second push rod segment.

Further, the first limiting portion is a concave portion provided on the side wall of the bracket, and the first push rod segment is clamped in the concave portion and reciprocates along the concave portion; the second The limiting part is a baffle plate arranged on the bottom plate of the bracket, and the second push rod segment is clamped between the baffle plate and the side wall of the bracket, and reciprocates along the baffle plate.

Further, the two ends of the handle are respectively provided with through holes B, the side walls of the bracket are respectively provided with pins B correspondingly, and the pins B are inserted into the through holes B.

Further, the return spring is sleeved on the pin A, and is located between the third push rod segment and the side wall of the bracket.

Further, the free end of the first push rod segment is provided with a buffer pad.

Further, the length of the short semi-axis is 3 mm, and the length of the long semi-axis is 12 mm.

The present invention also proposes a refrigeration device, comprising a box body and a door body hinged with the box body, and the above-mentioned door-assist door handle assembly is provided on the side end surface of the door body.

Compared with the prior art, the advantages and positive effects of the present invention are:

The present invention provides an assist door handle assembly and refrigeration equipment, comprising a bracket, a handle, a push rod and a return spring arranged on the bracket. Both ends of the handle are respectively provided with cams. The push rod is a four-section structure, including a first push rod section, a second push rod section, a third push rod section and a fourth push rod section. The third push rod segment is slidably fitted with the pin A provided on the bracket. When the handle is in an unopened state, the end point of the short half shaft of the cam is closer to the fourth push rod segment than the end point of the long half shaft. When the handle is pulled, the circumferential end face of the cam abuts against the end of the fourth push rod segment. As the handle continues to be pulled, the short semi-axis end point of the cam gradually moves away from the fourth push rod segment, and the long semi-axis end point gradually approaches the fourth push rod segment. The push rod section pushes the fourth push rod section to move in the direction close to the box body, thereby driving the first push rod section to move in the direction close to the box body, and at the same time the return spring shrinks; continue to pull the handle until the first push rod section The end abuts against the box body, and through the force acting on the box body, the pressure difference between the inside and outside of the storage room of the refrigeration equipment is overcome, and the door body is easily opened. After the handle is released, the return spring resets, driving the assist handle assembly to reset. Through the action of the cam and the fourth push rod segment, the force transmission is realized, and the structure is simple and easy to realize.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram of the assembly structure of a power-assisted door handle assembly according to an embodiment of the present invention;

2 is a schematic structural diagram of an assembled door handle assembly according to an embodiment of the present invention;

Fig. 3 is the C-C direction view in Fig. 2;

Fig. 4 is the structural representation of the cam at D place in Fig. 3;

5 is a schematic structural diagram of the assist door handle assembly after removing the handle according to the embodiment of the present invention;

Fig. 6 is a partial enlarged view at E in Fig. 5;

7 is a schematic structural diagram of a push rod according to an embodiment of the present invention;

8 is a schematic structural diagram of a stent according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another perspective of the stent according to the embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a power-assisted door handle assembly installed on a refrigeration device according to an embodiment of the present invention;

FIG. 11 is an enlarged view of the part at F in FIG. 10 .

Among them, 100-handle, 110-holding part, 120-rotating part, 200-push rod, 210-first push-rod segment, 220-second push-rod segment, 230-third push-rod segment, 231-through hole A, 240- fourth push rod segment, 300- bracket, 310- first side wall, 320- second side wall, 330- third side wall, 340- fourth side wall, 341- opening, 342- recess, 343-through hole A', 350-baffle plate, 360-pin shaft A, 370-pin shaft B, 400-return spring, 500-box body, 600-door body, 610-embedded box, 700-cam.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

First of all, a brief description of the technical terms involved in the specific embodiment is made: the following refers to the front or rear of each structural component, which is defined in terms of the position of the structural component relative to the user in the normal use state; When describing the arrangement position of a plurality of structural parts before or after, it is also the definition of the position of the device composed of the plurality of structural parts relative to the user in the normal use state.

The invention discloses a power-assisted door handle assembly, which is applied to refrigeration equipment such as refrigerators and vertical freezers.

Referring to the structural schematic diagrams before and after assembly of the power assist door handle assembly shown in FIGS. 1 to 6 , it includes a bracket 300 , a handle 100 , a push rod 200 and a return spring 400 disposed on the bracket 300 .

The bracket 300 is a strip-shaped groove structure. Referring to the schematic structural diagrams of the bracket 300 shown in FIG. 8 and FIG. The third side wall 330 and the fourth side wall 340 are arranged opposite to each other in the longitudinal direction. The middle of the fourth side wall 340 is provided with a strip-shaped opening 341 . After the handle 100 is installed in place, a gap is formed between the opening 341 and the handle 100 , so that the user can reach into the opening 341 and pull the handle 100 .

Both ends of the handle 100 are rotatably connected to the first side wall 310 and the second side wall 320 of the bracket 300 respectively, so that the handle 100 can be pulled easily. The fourth side wall 340 is provided with a through hole A' 343, a pin A 360 is fixed on the through hole A' 343, and the push rod 200 is sleeved on the pin A 360 and reciprocates along the pin A 360. The pin A 360 also plays a role of limiting and guiding the push rod 200 . The return spring 400 is used to apply a return force to the power door handle assembly. When the handle 100 is pulled, one side of the handle 100 abuts one end of the push rod 200, and pushes the push rod 200 to move along the pin axis A 360 toward the box 500 of the refrigeration equipment until it abuts against the box 500 and resets. Spring 400 contracts. Using the force acting on the box body 500 to overcome the pressure difference between the inside and outside of the storage room of the refrigeration equipment, the door body 600 can be easily opened. When the handle 100 is released, the reset spring 400 resets, and drives the assist door handle assembly to reset.

The handle 100 includes a holding part 110 and a rotating part 120 connected with the holding part 110 . Two ends of the rotating part 120 are respectively provided with through holes B (not shown), the first side wall 310 and the second side wall 320 are respectively provided with pins B 370 correspondingly, and the pins B 370 are inserted in the through holes B , to realize the rotational connection of the handle 100 relative to the bracket 300 . After the handle 100 is installed in place, the side of the holding portion 110 is close to the fourth side wall 340 and forms a clearance space with the opening 341 , so that the user can easily insert his hand into the opening 341 to operate the holding portion 110 . The side surface of the rotating part 120 is close to the third side wall 330 . In order to prevent the rotating part 120 from interfering with the third side wall 330 during the rotating process, the cross-sectional shape of the rotating part 120 is preferably arc-shaped, referring to FIG. 3 . In addition, the grip portion 110 in this embodiment also functions as a decorative cover, which can cover the push rod 200 , the return spring 400 and other components in the bracket 300 . Of course, in other embodiments, a decorative cover (not shown) may be separately provided on the bracket 300 below the holding portion 110 .

Two sides of the rotating part 120 are respectively provided with cam mounting parts (not shown) for mounting the cam 700 . 4, the center of the cam 700 is set as O, the end point of the short semi-axis is A, and the end point of the long semi-axis is B. Preferably, in order to improve the force transmission efficiency, in this embodiment, the length of the short semi-axis is set to be 3 mm, and the length of the long semi-axis is set to be 12 mm.

The push rod 200 in this embodiment adopts a four-section structure design. Referring to the schematic structural diagram of the push rod 200 shown in FIG. 7 , the push rod 200 includes a first push rod section 210 , a second push rod section 220 , a third push rod section 230 and a fourth push rod section The rod segment, the third push rod section 230 is vertically arranged between the first push rod section 210 and the second push rod section 220, and the fourth push rod section 240 is vertically arranged at the end of the second push rod section 220 and is connected to the first push rod section 220. The three pushrod segments 230 are located on the same side. The third push rod segment 230 is provided with a through hole A 231 , and the pin shaft A 360 is inserted into the through hole A 231 to realize the sliding connection between the push rod 200 and the pin shaft A 360 . After the push rod 200 is installed in place, the end of the first push rod section 210 is close to the box body 500 , and the fourth push rod section 240 is close to the cam 700 . When the gripping portion 110 is pulled, the gripping portion 110 drives the rotating portion 120 to rotate relative to the bracket 300 . Driven by the rotating portion 120 , the circumferential side surface of the cam 700 abuts against the fourth push rod segment 240 . Continue to pull the holding part 110, with the rotation of the rotating part 120, the short semi-axis end point A of the cam 700 gradually moves away from the fourth push rod section 240, and the long semi-axis end point B gradually approaches the fourth push rod section 240, pushing the fourth push rod section 240. The rod section 240 moves in the direction close to the box body 500 , so that the end of the first push rod section 210 is close to the box body 500 ; Depend on.

Preferably, in order to avoid wasting force, when the power-assisted door handle assembly is in the initial state, the end point A of the short half-axis is set to abut against the fourth push rod segment 240 . In this way, as long as the handle 100 is pulled forcefully, the cam 700 can push the fourth push rod segment 240 to move, thereby driving the entire push rod 200 to move toward the direction close to the box body 500, thereby improving the response speed of the assist door handle assembly.

In order to make the push rod 200 more stable and smooth during the reciprocating motion, the bracket 300 is provided with a first limiting portion for limiting the position of the first push rod segment 210 and a limiting portion for limiting the second push rod segment 220 The second limit part. In this embodiment, from the point of view of ease of processing and installation, the settings of the first limiting portion and the second limiting portion are as follows:

The first limiting portion is a concave portion 342 disposed on the upper end surface of the fourth side wall 340 , and the first push rod segment 210 is clamped in the concave portion 342 and reciprocates along the concave portion 342 . The second limiting portion is a baffle plate 350 disposed on the bottom plate of the bracket 300 , and between the baffle plate 350 and its adjacent first side walls 310 and second side walls 320 are respectively formed to limit the position of the second push rod segment 220 . limited space. The second push rod segment 220 is clamped in the limiting space and reciprocates along the length direction of the baffle 350 .

It should be noted that, in order to prevent the baffle 350 from interfering with the movement of the rotating part 120 , a distance L is set between the baffle 350 and the third side wall 340 , see FIG. 8 . Assuming that when the first push rod segment 210 abuts against the box body 500 until the door body 600 is opened, the maximum horizontal movement distance of the rotating part 120 is H, and the value of L needs to be set to ensure that L≥H.

The return spring 400 in this embodiment is sleeved on the pin A 360 and is located between the third push rod segment 230 and the fourth side wall 340 , one end of which is connected to the third push rod segment 230 and the other end is connected to the fourth side wall 340 connect. When the handle 100 is pulled, as the third push rod segment 230 slides along the pin axis A 360, the return spring 400 is forced to contract; when the handle 100 is released, the return spring 400 resets, driving the third push rod segment 230 away from The direction of the box body 500 is moved, so as to realize the reset of the power-assisted door handle assembly.

In order to prevent the push rod 200 from causing wear to the box body during the reciprocating abutment process with the box body 500 , a buffer pad (not shown) is provided at the free end of the first push rod segment 210 .

The present invention also discloses a refrigeration device, which includes a refrigerator, a vertical freezer, etc., which includes a box body 500 and a door body 600 hinged to the box body 500 . Referring to FIGS. 10 and 11 , a pre-embedded box 610 is provided on the side end surface of the door body 600 , and the pre-embedded box 610 and the door body 600 are integrally foamed and used for installing the assist door handle assembly disclosed in this embodiment. In actual installation, the handle 100 , the cam 700 , the push rod 200 , the return spring 400 and other components are first installed on the bracket 300 , and then the bracket 300 is installed in the pre-embedded box 610 as a whole. After the installation is completed, only the grip portion 110 for the user to operate is exposed and does not protrude from the door body 600, forming an embedded handle, which facilitates opening the door body 600 and avoids unsightly appearance caused by the exposed handle. , easy to wear and so on.

When the gripping portion 110 is pulled, the gripping portion 110 drives the rotating portion 120 to rotate relative to the bracket 300 . Driven by the rotating portion 120 , the circumferential end surface of the cam 700 abuts against the fourth push rod segment 240 . Continue to pull the holding part 110, with the rotation of the rotating part 120, the short semi-axis end point A of the cam 700 gradually moves away from the fourth push rod section 240, and the long semi-axis end point B gradually approaches the fourth push rod section 240, pushing the fourth push rod section 240. The rod section 240 moves in the direction close to the box body 500 , so that the end of the first push rod section 210 is close to the box body 500 ; Depend on. Continue to keep pulling the grip portion 110 , the force of the first push rod segment 210 acting on the box body 500 continues to increase, overcoming the pressure difference between the inside and outside of the storage room, and realizing the easy opening of the door body 600 . After the gripping portion 110 is released, the reset spring 400 resets, and drives the assist door handle assembly to reset.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. An assist door handle assembly, comprising a bracket, characterized in that it also includes a handle, a push rod and a return spring; the handle is rotatably connected to the bracket, and both ends of the handle are respectively provided with cams; the bracket A pin shaft A is provided on it, and the push rod is sleeved on the pin shaft A and reciprocates along the pin shaft A; the reset spring is used to apply a reset force to the power door handle assembly; The push rod includes a first push rod section, a second push rod section, a third push rod section and a fourth push rod section that are connected in sequence, and the third push rod section is vertically arranged between the first push rod section and the fourth push rod section. Between the second push rod sections, the fourth push rod section is vertically arranged at the end of the second push rod section, and is on the same side as the third push rod section, the third push rod section The segment is provided with a through hole A, and the pin A is inserted into the through hole A; the return spring is sleeved on the pin A, and is located between the third push rod segment and the side wall of the bracket; The handle includes a grip portion and a rotating portion connected with the grip portion, the cam is arranged on the rotating portion, and the grip portion can shield the push rod and the return spring; The handle, the push rod and the return spring are configured such that when the handle is pulled, the circumferential side surface of the cam abuts one end of the push rod, pushing the push rod along the pin shaft A moves toward the box body of the refrigerating equipment until it abuts against the box body, and the return spring contracts; when the handle is released, the return spring returns to drive the power door handle assembly to return. 2 . The assist door handle assembly according to claim 1 , wherein the cam is a disc-shaped cam, and when the handle is in an unopened state, the end point of the short half shaft of the disc-shaped cam is compared with The end point of the long semi-axis is close to the end of the push rod; when the handle is in the open state, the end point of the long semi-axis of the disc cam is closer to the end of the push rod than the end point of the short semi-axis . 3 . The assist door handle assembly of claim 2 , wherein when the handle is pulled, the end point of the long semi-axis gradually moves away from the fourth push rod segment, and the end point of the short semi-axis gradually moves away from the fourth push rod segment. 4 . Close to the fourth push rod segment, the end of the first push rod segment abuts against the box body. 4 . The assist door handle assembly according to claim 3 , wherein the bracket is provided with a first limiting portion for limiting the first push rod segment and a first limiting portion for limiting the second push rod segment. 5 . The second limiting part for limiting. 5 . The assist door handle assembly according to claim 4 , wherein the first limiting portion is a concave portion provided on the side wall of the bracket, and the first push rod segment is clamped on the side wall of the bracket. 6 . Reciprocating movement in and along the concave portion; the second limiting portion is a baffle plate arranged on the bottom plate of the bracket, and the second push rod segment is clamped between the baffle plate and the bracket. Reciprocating movement between the side walls and along the baffle. 6 . The assist door handle assembly according to claim 1 , wherein the two ends of the handle are respectively provided with through holes B, and the side walls of the bracket are respectively provided with pins correspondingly. 7 . The shaft B, the pin shaft B is inserted in the through hole B. 7 . The power-assisted door handle assembly according to claim 1 , wherein the free end of the first push rod segment is provided with a buffer pad. 8 . 8 . The assist door handle assembly according to claim 2 , wherein the length of the short half shaft is 3 mm, and the length of the long half shaft is 12 mm. 9 . 9 . A refrigeration equipment, comprising a box body and a door body hinged with the box body, wherein the side end surface of the door body is provided with the power-assisted door handle assembly according to any one of claims 1-8 .

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