CN219887840U - Needle type hinge with cam type door closing structure - Google Patents

Abstract

The utility model discloses a pin type hinge with a cam type door closing structure, which comprises a fixed component, wherein the fixed component comprises a hinge arm, one end of the hinge arm is provided with a hinge shaft, the hinge shaft is fixedly arranged in the circumferential direction, an arc surface and a chord surface are formed on the hinge shaft, an angular edge is formed at the joint of the chord surface and the arc surface, the hinge arm is connected with a movable component used for being installed on a door leaf through the hinge shaft, the movable component comprises an installation seat, a push rod and a spring, a sliding hole is formed on the installation seat, the push rod is adapted to slide in the sliding hole, the sliding hole is perpendicular to the hinge shaft, the spring is arranged in the sliding hole, one end of the push rod is provided with a pressing end face which is pressed against the hinge shaft through elastic restoring force of the spring, the pressing end face can rotate along the arc surface, the movable component has a closing position relative to the hinge arm, and the pressing end face is abutted against the angular edge at the closing position. The pin type hinge has the advantages of simple structure, easy manufacture and low cost.

Description

Needle type hinge with cam type door closing structure

Technical Field

The utility model relates to the technical field of needle type hinges, in particular to a needle type hinge with a cam type door closing structure.

Background

At present, the pin-type hinge of the prior art comprises a fixed component arranged on the inner wall of the cabinet body and a movable seat arranged on the door leaf, wherein the fixed component is hinged with the movable seat through a hinge shaft. The prior Chinese patent with the publication number of CN217760546U discloses a magnet-free needle type hinge, which comprises a spring, a movable sleeve and a fixed sleeve, wherein the movable sleeve and the fixed sleeve are sleeved on a hinge shaft, the movable sleeve and the fixed assembly are positioned circumferentially relative to each other, the movable sleeve can slide on the hinge shaft, the fixed sleeve and the hinge shaft are fixed relatively, a bump is formed at one end of the movable sleeve, a top surface is formed at one end of the bump, an end surface is formed at one end of the fixed sleeve, a groove is formed on the end surface, and a guiding inner slope is formed between the bottom of the groove and the end surface; the movable sleeve and the fixed sleeve are mutually attached by the elastic restoring force of the spring, and the aim of automatically closing the door leaf and keeping the door leaf at the closing position when the door leaf swings to the closing position is fulfilled by guiding the relative sliding of the inner slope and the convex block, but the needle type hinge in the prior art is necessary to be improved because the process of forming the special-shaped structure on the end surfaces of the movable sleeve and the fixed sleeve is complex, the working time is long, the manufacturing is difficult and the cost is too high.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the pin type hinge with the cam type door closing structure, which has the advantages of simple structure, easy manufacture and lower cost.

The aim of the utility model is achieved by the following technical scheme.

The utility model discloses a needle type hinge with a cam type door closing structure, which comprises a fixed component used for being installed on the inner wall of a cabinet body, wherein the fixed component comprises an articulated arm, one end of the articulated arm is provided with an articulated shaft, the articulated shaft is fixedly arranged in the circumferential direction, an arc surface and a chord surface are formed on the articulated shaft, an angle edge is formed at the joint of the chord surface and the arc surface, the articulated arm is connected with a movable component used for being installed on a door leaf through the articulated shaft, the movable component comprises an installation seat, a push rod and a spring, a sliding hole is formed on the installation seat, the push rod is adapted to be slidingly arranged in the sliding hole, the sliding hole is perpendicular to the articulated shaft, the spring is arranged in the sliding hole, one end of the push rod is provided with a pressing end face, the pressing end face is pressed against the articulated shaft through elastic restoring force of the spring, the pressing end face can rotate along the arc surface, the movable component has a closing position relative to the articulated arm, and the pressing end face is pressed against the arc edge.

Preferably, the corner edge is set to a rounded corner edge.

Preferably, the sliding hole is in threaded connection with an adjusting screw, and the spring clamp is arranged between the adjusting screw and the push rod.

Preferably, a step surface is formed at the other end of the push rod corresponding to the spring, the end part of the spring is sleeved outside the push rod, and the spring is abutted to the step surface.

Preferably, a flat square part is formed on the hinge shaft, a D-shaped hole is formed on the hinge arm, and the flat square part is connected with the D-shaped hole in an adaptive mode.

Preferably, an avoidance notch for avoiding the hinge arm is formed in the mounting seat, the sliding holes are respectively formed in the upper side of the avoidance notch and the lower side of the avoidance notch, and the chord tangent planes are respectively formed in the upper side of the flat square part and the lower side of the flat square part.

Preferably, the movable assembly comprises a connecting block, a hinge mounting hole is formed in the connecting block, an inserting block is formed in the rear side of the connecting block, a positioning groove is formed in the bottom of the connecting block, a clamping groove is formed in the upper end of the mounting seat, a positioning block is formed in the mounting seat, the inserting block is connected with the clamping groove in an adaptive mode, the positioning block is connected with the positioning groove in an adaptive mode, a mounting screw hole is formed in the inserting block, and the connecting block is fixedly connected with the mounting seat relatively through a fastening piece in the mounting screw hole in a threaded mode.

Preferably, the upper and lower ends of the mounting seat are respectively and correspondingly provided with the connecting blocks which are symmetrical to each other, one end of each connecting block is provided with a bearing mounting hole, a bearing is arranged in each bearing mounting hole, and the upper and lower ends of the hinge shaft are respectively connected with the corresponding bearing mounting holes through the corresponding bearings.

Compared with the prior art, the utility model has the beneficial effects that: the hinge is circumferentially fixed through the arrangement of the hinge shaft, the arc surface and the chord surface are formed on the hinge shaft, the corner edge is formed at the joint of the chord surface and the arc surface, the hinge arm is connected with the movable component used for being installed on the door leaf through the hinge shaft, the movable component comprises an installation seat, a push rod and a spring, a sliding hole is formed on the installation seat, the push rod is arranged in the sliding hole in an adaptive sliding mode, the sliding hole is perpendicular to the hinge shaft, the spring is arranged in the sliding hole, one end of the push rod is provided with a pressing end face, the pressing end face is pressed on the hinge shaft through the elastic restoring force of the spring, the pressing end face can rotate along the arc surface, the movable component is provided with a closing position relative to the hinge arm, the pressing end face is abutted to the corner edge in the closing position, the purpose that the door leaf can be closed by self when the door leaf swings to be close to the closing position is achieved, and the door leaf can be kept at the closing position is achieved.

Drawings

Fig. 1 is a schematic perspective view of a needle hinge in an opened state according to the present utility model.

Fig. 2 is a schematic perspective view of the needle hinge in a closed state according to the present utility model.

Fig. 3 is an exploded view of the pin hinge of the present utility model.

Fig. 4 is an exploded view of the movable assembly of the present utility model.

Fig. 5 is a schematic perspective view showing a combination of an arm, a hinge shaft, a push rod, a spring and an adjusting screw according to the present utility model.

Fig. 6 is a schematic perspective view of a mounting base of the present utility model.

Fig. 7 is a schematic perspective view of the connecting block of the present utility model.

Fig. 8 is a schematic perspective view of a hinge shaft according to the present utility model.

Fig. 9 is a schematic perspective view of an arm according to the present utility model.

Fig. 10 is a schematic sectional partial structure view of the needle hinge in an opened state in a top view of the present utility model.

Fig. 11 is a schematic sectional partial structure in a top view of the needle hinge in a closed state of the present utility model.

Fig. 12 is a schematic view of the connection of the push rod and the hinge shaft according to the present utility model corresponding to fig. 10.

Fig. 13 is a schematic view of the connection of the push rod and the hinge shaft according to the present utility model corresponding to fig. 12.

Description of the reference numerals: a fixed assembly 1; an articulated arm 11; d-shaped holes 111; a hinge shaft 2; an arc surface 200; a chord tangent plane 201; corner edge 2011; flat square portion 202; a movable assembly 3; a mounting base 31; avoidance gap 3100; a hinge hole 3101; slide hole 3102; a clamping groove 311; a positioning block 312; a push rod 32; a pressing end surface 321; a step surface 322; a spring 33; an adjusting screw 34; a connection block 35; a plug 351; a positioning groove 352; bearing mounting holes 353, hinge mounting holes 354; a mounting screw hole 355; a damper 4; and a bearing 9.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The needle type hinge with the cam type door closing structure comprises a fixing component 1 which is used for being installed on the inner wall of a cabinet body, wherein the fixing component 1 comprises a hinge arm 11, one end of the hinge arm 11 is provided with a hinge shaft 2, and in actual use, the axis of the hinge shaft 2 is vertically arranged; the hinge shaft 2 is fixedly arranged circumferentially, that is, the hinge shaft 2 cannot rotate about the axis of the hinge shaft 2. As shown in fig. 5 and 8, an arc surface 200 and a chord cut surface 201 are formed on the hinge shaft 2, an angular edge 2011 is formed at the joint of the chord cut surface 201 and the arc surface 200, the hinge shaft 2 is a steel shaft, the hinge shaft 2 is turned by a lathe to form an external shape, and the chord cut surface 201 can be formed by simple milling. As shown in fig. 1 and 2, the hinge arm 11 is connected with the movable assembly 3 for mounting on a door leaf through the hinge shaft 2, in other words, the movable assembly 3 is hinged with the hinge arm 11, the movable assembly 3 can swing around the axis of the hinge shaft 2, as shown in fig. 4, the movable assembly 3 includes a mounting seat 31, a push rod 32 and a spring 33, a slide hole 3102 is formed on the mounting seat 31, as shown in fig. 10 and 11, the push rod 32 is slidably fitted in the slide hole 3102, the slide hole 3102 is perpendicular to the hinge shaft 2, so that the push rod 32 can be moved in a direction perpendicular to the axis of the hinge shaft 2 by the guiding action of the slide hole 3102, the spring 33 is provided in the slide hole 3102, as shown in fig. 12, one end of the push rod 32 is formed with a pressing end face 321, as shown in fig. 10 and 11, the pressing end face 321 is pressed against the hinge shaft 2 by the elastic restoring force of the spring 33, that is kept in an elastically compressed deformed state, as shown in fig. 12, the pressing end face 321 can rotate along the circular arc surface 200, that is rotatable around the axis of the hinge shaft 2. As shown in fig. 2, 11 and 13, the movable assembly 3 has a closed position relative to the hinge arm 11, in which the pressing end surface 321 abuts against the corner edge 2011.

The working principle of the needle hinge of the present utility model is briefly described as follows: the fixed component 1 is fixedly installed on the inner wall of the cabinet body, the movable component 3 is installed on the door leaf, specifically, the door leaf is provided with an aluminum profile frame door leaf, and the installation seat 31 is installed on the aluminum profile frame. As shown in fig. 1, when the movable assembly 3 is in an open state (corresponding to the door leaf open state), as shown in fig. 12, the push rod 32 is pressed against the arc surface 200 of the hinge shaft 2 by the elastic restoring force of the spring 33, when the door leaf is closed by a user, the door leaf drives the movable assembly 3 to swing in the closing direction (the movable assembly 3 swings clockwise in the visual direction of fig. 12), in the process, as shown in fig. 12, since the action line of the elastic restoring force of the spring 33 passes through the center of the hinge shaft 2, the reaction force of the arc surface 200 to the push rod 32 is perpendicular to the pressing end surface 321, and the action line of the reaction force of the arc surface 200 to the push rod 32 is coaxial with the push rod 32, so that the push rod 32 is not subjected to moment action; as the door leaf swings, when the door leaf approaches the closed position, due to the existence of the chord plane 201, as shown in fig. 13, the transition is made to the contact of the corner edge 2011 with the pressing end surface 321, so that the line of action of the arc surface 200 on the reaction force of the push rod 32 forms a distance from the axis of the push rod 32, and the distance is gradually increased, so that the push rod 32 is subjected to clockwise moment action, that is, the elastic restoring force of the spring 33 forces the push rod 32 to rotate around the axis of the hinge shaft 2, and the push rod 32 pushes the mounting seat 31 to rotate around the axis of the hinge shaft 2, so that even if the user releases the door leaf, the door leaf can automatically complete closing and keep the door leaf at the closed position by the driving of the spring 33. When the user needs to open the door leaf, the door leaf needs to be opened with a certain force to overcome the elastic restoring force of the spring 33, in the process that the corner edge 2011 is contacted with the pressing end surface 321 and is converted into the arc surface 200 to be contacted with the pressing end surface 321, the spring 33 is further elastically compressed and deformed, and when the pressing end surface 321 rotates to be abutted against the arc surface 200, the elastic restoring force of the spring 33 is counteracted through the axial support of the hinge shaft 2, so that the user can swing the door leaf easily. In summary, the arc surface 200 and the chord section 201 are connected to form a cam structure, and the door closing structure combined by the cam structure, the push rod 32 and the spring 33 achieves the purposes of automatically closing the door leaf and keeping the door leaf at the closed position when the door leaf swings to be close to the closed position, and the hinge shaft 2 is manufactured by simple turning and milling, and the push rod 2 can be manufactured by simple turning in the process of machining, so that compared with the prior art, the needle type hinge has the advantages of simple structure, easy manufacture and low cost.

Further, as shown in fig. 8 and 12, the corner edge 2011 is set to be a rounded corner edge, so that the pressing end surface 321 swings smoothly when abutting against the corner edge 2011, and rapid abrasion of the pressing end surface 321 and the corner edge 2011 is avoided.

Further, as shown in fig. 4, 10 and 11, the sliding hole 3102 is screwed with an adjusting screw 34, the adjusting screw 34 may be a set screw, the spring 33 is clamped between the adjusting screw 34 and the push rod 32, and then the adjusting screw 34 is rotated to move the adjusting screw 34 towards the push rod 32, so that the elastic compression deformation degree of the spring 33 can be increased, the thrust of the spring 33 to the push rod 32 is increased, and the self-closing force of the spring 33 for driving the door leaf can be adjusted.

Further, as shown in fig. 12, the other end of the push rod 32 is formed with a step surface 322, as shown in fig. 11, the end of the spring 33 is sleeved outside the push rod 32, the spring 33 is abutted against the step surface 322, and the push rod 32 plays a role in radial positioning of the spring 33, so that the connection between the push rod 32 and the spring 33 is reliable.

Further, as shown in fig. 8, a flat square portion 202 is formed on the hinge shaft 2, the flat square portion 202 is also formed by milling on the outer cylindrical surface of the hinge shaft 2, as shown in fig. 9, the hinge arm 11 is formed with a D-shaped hole 111, the flat square portion 202 is connected with the D-shaped hole 111 in an adapting manner, specifically, the inner chord surface of the D-shaped hole 111 is connected with the flat surface of the flat square portion 202 in an abutting manner, and the outer cylindrical surface of the hinge shaft 2 is connected with the inner cylindrical surface of the D-shaped hole 111 in an abutting manner, so that the hinge shaft 2 and the hinge arm 11 are positioned relatively in the circumferential direction in a simple structure.

Further, as shown in fig. 5, an avoidance notch 3100 for avoiding the hinge arm 11 is formed on the mounting seat 31, as shown in fig. 1 and fig. 2, when the door is closed, the hinge arm 11 relatively swings into the avoidance notch 3100, as shown in fig. 5, sliding holes 3102 are respectively formed on the upper side of the avoidance notch 3100 and the lower side of the avoidance notch 3100, as shown in fig. 8, tangential surfaces 201 are respectively formed on the upper side of the flat square portion 202 and the lower side of the flat square portion 202, that is, push rods 32, springs 33 and adjusting screws 34 are respectively arranged in the upper sliding holes 3102 and the lower sliding holes 3102, as shown in fig. 5, the two push rods 32 are distributed on the upper side and the lower side of the hinge arm 11, so that the stress balance of the hinge shaft 2 is facilitated, and the structure is reasonable, the whole needle type hinge is facilitated to operate stably, and the whole needle type hinge is durable.

Further, as shown in fig. 1, the movable assembly 3 includes a connection block 35, as shown in fig. 7, the connection block 35 is formed with a hinge mounting hole 354, a plug 351 is formed at the rear side of the connection block 35, a positioning groove 352 is formed at the bottom of the connection block 35, as shown in fig. 6, a clamping groove 311 is formed at the upper end of the mounting seat 31, a positioning block 312 is formed at the mounting seat 31, the positioning block 312 is located at a corresponding side of the sliding hole 3102, as shown in fig. 3 in combination with fig. 4, the plug 351 is connected with the clamping groove 311 in an adapting manner, and the positioning block 312 is connected with the positioning groove 352 in an adapting manner. As shown in fig. 7, the insert block 351 is formed with a mounting screw hole 355, the connection block 35 and the mounting seat 31 are relatively and fixedly connected by a fastener screwed in the mounting screw hole 355, specifically, a screw passes through the mounting seat 31 from the back and is screwed with the mounting screw hole 355, so that the mounting seat 31 and the connection block 35 are firmly and reliably connected by the positioning action of the positioning block 312 and the clamping groove 311, and the hinge mounting hole 354 is used for mounting the screw connected with the door leaf.

Further, the upper and lower ends of the mounting seat 31 are respectively and correspondingly provided with a mutually symmetrical connecting block 35, as shown in fig. 7, one end of the connecting block 35 is provided with a bearing mounting hole 353, as shown in fig. 3 in combination with fig. 1, a bearing 9 is mounted in the bearing mounting hole 353, and the upper and lower ends of the hinge shaft 2 are respectively connected with the corresponding bearing mounting hole 353 through the corresponding bearing 9, so that the movable assembly 3 can swing flexibly through the support of the bearing 9, and the abrasion of the connecting part of the mounting seat 31 and the hinge shaft 2 can be avoided. Since the connecting blocks 35 are symmetrically arranged at the upper and lower ends of the mounting seat 31, the movable assembly 3 is firmly mounted and connected with the door leaf.

As shown in fig. 3 and 4, the damper 4 is mounted on the mounting seat 31, and the damper 4 is disposed at a position corresponding to the avoidance notch 3100, and as shown in fig. 1, when the door is closed, the piston rod of the damper 4 collides with the side surface of the hinge arm 11, thereby playing a role of buffering the door from closing.

Claims (8)

1. Needle hinge with cam formula door structure of closing, including being used for installing fixed subassembly (1) on cabinet body inner wall, fixed subassembly (1) include hinge arm (11), the one end of hinge arm (11) is equipped with articulated shaft (2), its characterized in that: the utility model provides a hinge, articulated shaft (2) circumference is fixed to be set up, be formed with arc surface (200) and chord tangent plane (201) on articulated shaft (2), chord tangent plane (201) with the junction of arc surface (200) is formed with angle limit (2011), articulated arm (11) are connected with through articulated shaft (2) and are used for installing movable assembly (3) on the door leaf, movable assembly (3) include mount pad (31), push rod (32) and spring (33), be formed with slide hole (3102) on mount pad (31), push rod (32) adaptation slip is located in slide hole (3102), slide hole (3102) perpendicular to articulated shaft (2), spring (33) set up in slide hole (3102), the one end of push rod (32) is formed with and presses terminal surface (321), press terminal surface (321) through the elasticity recovery of spring (33) is pressed and is pasted on articulated shaft (2), press terminal surface (321) can be along arc surface (200) rotation angle limit (321) are in relative to be closed on the position (2011).

2. The pin hinge with cam type door closing structure of claim 1, wherein: the corner edge (2011) is set to be a round corner edge.

3. The pin hinge with cam type door closing structure of claim 1, wherein: the sliding hole (3102) is in threaded connection with an adjusting screw (34), and the spring (33) is clamped between the adjusting screw (34) and the push rod (32).

4. A pin hinge with cam type door closing structure according to claim 3, wherein: the other end of the push rod (32) corresponding to the spring is provided with a step surface (322), the end part of the spring (33) is sleeved outside the push rod (32), and the spring (33) is attached to the step surface (322).

5. The pin hinge with cam type door closing structure of claim 1, wherein: the hinge shaft (2) is provided with a flat square part (202), the hinge arm (11) is provided with a D-shaped hole (111), and the flat square part (202) is connected with the D-shaped hole (111) in an adaptive mode.

6. The pin hinge with cam type door closing structure of claim 5, wherein: the hinge is characterized in that an avoidance notch (3100) for avoiding the hinge arm (11) is formed in the mounting seat (31), sliding holes (3102) are respectively formed in the upper side of the avoidance notch (3100) and the lower side of the avoidance notch (3100), and chord tangent planes (201) are respectively formed in the upper side of the flat square part (202) and the lower side of the flat square part (202).

7. The pin hinge with cam type door closing structure of claim 6, wherein: the movable assembly (3) comprises a connecting block (35), a hinge mounting hole (354) is formed in the connecting block (35), an inserting block (351) is formed in the rear side of the connecting block (35), a positioning groove (352) is formed in the bottom of the connecting block (35), a clamping groove (311) is formed in the upper end of the mounting seat (31), a positioning block (312) is formed in the mounting seat (31), the inserting block (351) is connected with the clamping groove (311) in an adapting mode, the positioning block (312) is connected with the positioning groove (352) in an adapting mode, a mounting screw hole (355) is formed in the inserting block (351), and the connecting block (35) is fixedly connected with a fastener in the mounting screw hole (355) in a relatively threaded mode.

8. The pin hinge with cam type door closing structure of claim 7, wherein: the upper end and the lower end of the mounting seat (31) are respectively and correspondingly provided with the connecting blocks (35) which are symmetrical to each other, one end of each connecting block (35) is provided with a bearing mounting hole (353), a bearing (9) is arranged in each bearing mounting hole (353), and the upper end and the lower end of the hinge shaft (2) are respectively connected with the corresponding bearing mounting holes (353) through the corresponding bearings (9).