TWI811979B - Claw of claw crane with center heat conducting structure as well as driving device thereof - Google Patents

Abstract

The present invention relates to a claw of a claw crane, which includes a center heat conducting structure for overcoming the problem that the heat energy, which is generated while an electromagnet of a driving device of the claw is energized to enhance the clamping force of the claw, is prohibited from being transferred out from the center of the electromagnet and a magnetic conducting member disposed in the electromagnet. The claw includes: a driving unit having a housing, an electromagnet, and a hollow tube, wherein the housing extends upward in an axle direction and has an opening in the axle direction, the hollow tube is disposed in the housing, and the electromagnet is disposed in the housing and encircles the hollow tube; a cover fixed to the housing and cover the opening; a magnetic conducting member disposed in the housing and having an annular portion inserted from an end portion of the hollow tube to reach the hollow tube; a claw body having an axle member and being connected to the driving unit, wherein the axle member penetrates into, and is movable with respect to, the hollow tube. Thereby, the heat energy that is generated while the electromagnet is energized can be transferred out from the center of the electromagnet, thus reducing the heat energy that may affect the clamping force of the claw.

Description

Clamping jaws of a clamping machine with a central thermal conductive structure and its driving device

The present invention relates to a clamping jaw, in particular to a clamping jaw of an object-gripping machine. By arranging a magnetic conductive component in the drive unit of the clamping jaw, when the electromagnet of the drive unit is energized, the magnetic conducting component can generate magnetic force to attract the clamping jaw. The invention uses a shaft member to increase the clamping force of the clamping jaw, and the heat from the center of the electromagnet and the magnetic conductive member can be dissipated by the magnetic conductive member contacting the cover of the drive unit.

The claw machine, commonly known as the claw machine, is an electronic game machine. The clamping machine displays the products in a storage space, and the storage space is surrounded by transparent partitions. After consumers put in coins, they can operate the clamping claws located in the storage space and move the clamping claws to Press the button when the target product is above the target product, so that the clamping jaws automatically complete the clamping of the target product; there is an electromagnet inside the clamping jaw, which is generally controlled by energizing the electromagnet to generate magnetic force, thereby controlling the clamping and releasing of the clamping jaw. action. For example, there is the Republic of China Patent Announcement No. M606155, which energizes the electromagnet with a fixed current so that the clamping claws generate a corresponding clamping force to clamp the product.

Please refer to the third figure, in which, in order to increase the clamping force of the clamping jaw when a fixed current is passed, a magnetic conductor B is set in the center of an electromagnet A. When the current passes through the electromagnet A, the magnetic conductor B Part B will generate magnetic force to increase the clamping force of the clamping jaw. Specifically, the annular electromagnet A is placed in a casing C, the magnetic conductive member B is extended into the annular electromagnet A, and then a cover D is used to cover the casing C. There will be a distance d between the magnetic part B and the cover D. When energized, the center of the electromagnet A and the conductor Magnetic component B will generate heat energy, and due to the thermal resistance formed by the distance d, the heat energy will not be easily discharged. This heat energy will affect the size of the magnetic force generated when electromagnet A is energized and reduce the clamping force of the clamping jaws. Sometimes it will still cause consumption. The operator cannot smoothly grasp the target product, which affects the consumer's willingness to use it.

Therefore, in order to increase the clamping force of the clamping jaws without increasing the magnitude of the current that energizes the electromagnets, and to conduct the heat energy away from the center of the electromagnets, the inventor proposes a clamping machine with a central thermal conductive structure. The driving device of the claw includes: a driving unit, a casing, an electromagnet and a hollow pipe fitting. The casing extends in an axial direction and has an opening in the axial direction. The hollow pipe fitting is arranged in the casing and has an end connected to it. The opening, the electromagnet is disposed in the shell and surrounds the hollow pipe; a cover body has a cover portion, the cover body is fixed to the shell and the cover portion covers the opening; a magnetic conductive member is disposed on the In the shell, the cover is placed and the magnetic conductive member has an annular portion extending from the end of the hollow pipe and contacts the hollow pipe, and the magnetic conductive member also contacts the cover.

Further, the electromagnet contacts the hollow pipe.

Furthermore, the cover body has an outer ring surface and a plurality of heat dissipation fins. The outer ring surface is sleeved on the shell to fix the cover body to the shell. Each heat dissipation fin is disposed on the outer ring surface and along the outer ring surface. extending in a radial direction.

Further, the cover part of the cover body includes a thermal conductive part extending in the axial direction, the magnetic conductive member has a top against the thermal conductive part, and the thermal conductive part contacts the electromagnet.

Furthermore, there is a heat conduction space between the cover part of the cover body and the electromagnet, and a heat conduction medium is disposed in the heat conduction space.

Furthermore, the cover part and the thermal conductive part are integrally formed.

Furthermore, the cover part has a first fixing part, and the magnetic conductive part has a second fixing part. The second fixing part is fixed on the first fixing part, so that the magnetic conductive part is combined with the cover part.

Furthermore, a recess is provided on the annular part, and a closed annular groove is formed between the recess and the hollow pipe, and another heat-conducting medium is provided in the annular groove.

A clamping jaw of a clamping machine with a central thermal conductive structure, including: a driving unit, a shell, an electromagnet and a hollow pipe fitting. The shell extends in an axial direction and has an opening in the axial direction. The hollow pipe fitting is provided in The shell has an end connected to the opening, and the electromagnet is arranged in the shell and surrounds the hollow pipe; a cover body has a cover portion, the cover body is fixed to the shell and the cover portion covers the opening; A magnetic conductive member is provided in the shell, and the magnetic conductive member has an annular portion extending from the end of the hollow pipe and contacting the hollow pipe, and the magnetic conductive member also contacts the cover; a claw body has a A shaft member, the claw body is connected to the driving unit, and the shaft member is movably inserted into the hollow pipe member.

Furthermore, the cover part has a first fixing part, and the magnetic conductive part has a second fixing part. The second fixing part is fixed on the first fixing part, so that the magnetic conductive part is combined with the cover part.

According to the above technical characteristics, the following effects can be achieved:

1. Put the magnetic conductive part through the electromagnet. When the electromagnet is energized, the magnetic conductive part can generate magnetic force to attract the shaft, thereby increasing the clamping force of the clamping claw.

2. By making the heat conductive part of the cover contact the magnetic conductive part, and the magnetic conductive part then contacts the electromagnet through the hollow pipe, the heat energy in the center of the electromagnet can be transferred to the magnetic conductive part through the hollow pipe, and the magnetic conductive part then transfers the heat energy to the cover. The body is then discharged into the air to prevent the heat energy from affecting the magnetic force generated when the electromagnet is activated, so that the clamping jaw cannot maintain the clamping force corresponding to the magnetic force generated by the electromagnet.

3. By arranging heat dissipation fins around the cover, the contact area with the air can be increased, so that the heat energy of the hollow pipe is guided to the cover through the heat conduction part, and then transferred to the air through the heat dissipation fins, thereby improving the performance of the clamping jaw. The heat dissipation efficiency, and the cover closing the opening, can prevent dust from entering the drive unit and contaminating the electromagnet and affecting the working efficiency of the electromagnet.

4. By arranging heat dissipation fins around the cover, the friction of holding the cover can be increased, which helps in assembling or disassembling the cover.

5. The cover body is formed in one piece, which can reduce the steps required to assemble the clamp jaws, reduce the time required to assemble the clamp jaws, and increase the number of clamp jaws assembled per unit time.

6. On the heat energy transfer path, placing heat-conducting media between the contact surfaces of different parts can increase the contact area between different parts, thereby improving the heat energy transfer efficiency.

1: Drive unit

11: Shell

111:Open your mouth

112:Another opening

113:hole

12:Electromagnet

13:Hollow pipe fittings

131:End

132:The other end

2: Cover

21:Thermal conduction part

22: Cover part

221:First fixed part

23: Outer ring surface

24: Cooling fins

25:Another hole

26:Thermal conduction space

3: Another cover

31:Perforation

4: Claw body

41:Shaft parts

5: Thermal conductive medium

5A: Another thermal conductive medium

6: Magnetic conductive parts

61:Top

62:Second fixed part

63: Ring part

64: concave part

7: Ring groove

A:Electromagnet

B: Magnetic conductive parts

C: Shell

D: cover

[First Figure] is a partial cross-sectional view of an embodiment of the present invention.

[The second figure] is an exploded perspective view of an embodiment of the present invention.

[The third picture] is a partial cross-sectional view of a conventional magnetically conductive member installed in a drive unit.

Based on the above technical features, the main functions of the clamping claw of the clamping machine with a central thermal conductive structure of the present invention will be clearly demonstrated in the following embodiments.

Please refer to the first and second figures. The clamping claw of the object clamping machine of the present invention includes a driving unit 1, a cover body 2, another cover body 3, a claw body 4, a thermal conductive medium 5 and a magnetic conductive member 6 .

The driving unit 1 has a shell 11, an electromagnet 12 and a hollow pipe 13. The shell 11 is an annular thin wall and extends in an axial direction, and has an opening 111 and another opening 112 at both ends in the axial direction. The hollow pipe 13 is disposed in the housing 11 and has an end 131 connected to the opening 111 and the other end 132 communicates with the other opening 112; the electromagnet 12 is arranged in the housing 11 and surrounds the hollow pipe 13, and the outer wall of the hollow pipe 13 is in contact with the electromagnet 12, and a hole 113 is provided in the drive on the housing 11 of unit 1.

The cover 2 is made of aluminum or copper and is made of aluminum or copper. The cover 2 includes a cover 22 , an outer ring surface 23 and a plurality of heat dissipation fins 24 . The cover 22 includes a heat sink extending in the axial direction. There is a heat conduction part 21, and the cover part 22 has a first fixing part 221. In this embodiment, the first fixation part 221 is a screw hole on the heat conduction part 21, and each heat dissipation fin 24 is disposed on the heat conduction part 21. On the outer ring surface 23 and extending along a radial direction, each of the heat dissipation fins 24 is arranged at equal intervals on the outer ring surface 23; when the outer ring surface 23 is sleeved on the housing 11, the cover body 2 is fixed on the shell 11. At the same time, the cover part 22 of the cover body 2 covers the opening 111, and the heat conductive part 21 abuts the end 131 of the hollow tube 13 and the electromagnet 12, so that the cover part 22 A heat conduction space 26 is formed between the electromagnet 12 and the cover 2 has another hole 25 corresponding to the hole 113 provided on the outer ring surface 23. The wires of the electromagnet 12 can pass through the hole 113 and the other hole 25. The hole 25 passes through and extends out of the cover 2; the other cover 3 is fixed on the housing 11 and covers the other opening 112. The other cover 3 simultaneously resists the electromagnet 12 and the The other end 132 of the hollow tube 13 .

The claw body 4 has a shaft 41 . The claw body 4 is connected to the driving unit 1 . The shaft 41 extends into a through hole 31 of the other cover 3 and is movably inserted through the other end 132 . In the hollow pipe 13, and the shaft 41 is in contact with the inner wall of the hollow pipe 13; how the driving unit 1 drives the claw body 4 is a common technology and is not the focus of the present invention, so it is not described in detail here. Make a description.

The thermally conductive medium 5 is disposed in the thermally conductive space 26 so that the thermally conductive medium 5 contacts the electromagnet 12 and the cover 22 . The thermally conductive medium 5 can be thermally conductive paste or thermally conductive silicone, but is not limited thereto.

The magnetic conductive member 6 has a top 61 , a second fixing part 62 , an annular part 63 and a recessed part 64 . The magnetic conductive member 6 is disposed in the housing 11 so that the annular part 63 extends from the end of the hollow tube 13 Department 131 extension Into and contacts the hollow tube 13 , wherein in this embodiment, the top 61 is the top surface of the annular portion 63 , so that the top 61 contacts the heat conductive portion 21 . Specifically, the second fixing part 62 is a screw extending from the top 61 , and the magnetic conductive member 6 is fixed to the first fixing part 221 of the cover part 22 via the second fixing part 62 , for example, by the above-mentioned screw. into the screw hole on the thermal conductive part 21, so that the magnetic conductive member 6 is combined and fixed on the thermal conductive part 21, but is not limited to this; or it is not necessary to go through the combination of the second fixing part 62 and the first fixing part 221 , when the cover 22 directly covers the opening 111, the heat conductive part 21 extending from the cover 22 will resist the magnetic conductive member 6 provided in the housing 11, causing the top of the magnetic conductive member 6 to 61, that is, the top surface of the annular portion 63 contacts the heat conduction portion 21; the recess 64 is provided on the annular portion 63, and a closed annular groove 7 is formed between the recess 64 and the hollow tube 13, with another A thermal conductive medium 5A is disposed in the annular groove 7 , and the other thermal conductive medium 5A contacts the magnetic conductive member 6 and the hollow tube 13 , thereby causing the thermal conductive portion 21 of the cover 2 to contact the magnetic conductive member 6 The top 61 of the magnetic conductive member 6 extends into and contacts the hollow tube 13 . The hollow tube 13 contacts the electromagnet 12 , so that a conductive path is formed between the electromagnet 12 and the cover 2 .

When the clamping claws of the clamping machine with a central thermal conductive structure of the present invention are continuously energized to cause the electromagnet 12 to generate magnetic force and thereby control the claw body 4 to perform a clamping or releasing action, part of the electrical energy will be converted The temperature of the electromagnet 12 is increased due to thermal energy. The electromagnet 12 is arranged in the housing 11 and attached to the housing 11. The heat-conducting medium 5 is coated between the housing 11 and the electromagnet 12, for example It is a thermal paste (not shown in the figure, this part is a common technology, so it will not be described in detail here), so that the heat energy of the part of the electromagnet 12 close to the housing 11 will be exported to the air through the housing 11 , thereby achieving the effect of external heat dissipation of the electromagnet 12; similarly, the heat energy generated when the electromagnet 12 is energized will be transferred to the aforementioned heat dissipation fins of the cover 2 through the heat conduction medium 5 provided in the heat conduction space 26 24. The heat energy near the center of the electromagnet 12 will be transferred to the magnetic conductive member 6 extending into the end 131 of the hollow tube 13 through the tube wall of the hollow tube 13 and then transferred to the heat conductive part 21. Cover 2 medium temperature The higher heat-conducting portion 21 moves to the lower-temperature heat dissipation fins 24 in the cover 2, so that the heat energy is transferred to the air through the heat dissipation fins 24, thereby achieving the effect of dissipating heat from the central part of the electromagnet 12; Thereby, the heat dissipation effect of the outer and central parts of the electromagnet 12 is improved, so that the clamping claws of the clamping machine with a central thermal conductive structure of the present invention will not generate heat energy to the electromagnet 12 due to continuous energization of the electromagnet 12 Under the influence, the clamping force of the claw body 4 is reduced, so that the claw body 4 can maintain the clamping force corresponding to the magnetic force generated by the electromagnet 12. Furthermore, when the electromagnet 12 is energized, the magnetic conductive member 6 will generate magnetic force to attract the shaft member 41, thereby increasing the clamping force of the claw body 4.

Please refer to the second figure. When the cover 2 is to be installed on or removed from the casing 11, the plurality of heat dissipation fins 24 provided on the cover 2 can be held to increase the holding capacity of the cover. The friction force when the cover body 2 is removed helps to disassemble or install the cover body 2.

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood. However, the above embodiments are only preferred embodiments of the present invention and should not be used to limit the implementation of the present invention. The scope, that is, simple equivalent changes and modifications based on the patent scope of the present invention and the description of the invention, are all within the scope of the present invention.

1: Drive unit

11: Shell

111:Open your mouth

112:Another opening

12:Electromagnet

13:Hollow pipe fittings

131:End

132:The other end

2: Cover

21:Thermal conduction part

22: Cover part

221:First fixed part

23: Outer ring surface

24: Cooling fins

26:Thermal conduction space

3: Another cover

31:Perforation

4: Claw body

41:Shaft parts

5: Thermal conductive medium

5A: Another thermal conductive medium

6: Magnetic conductive parts

61:Top

62:Second fixed part

63: Ring part

64: concave part

7: Ring groove

Claims (9)

A driving device for the clamping jaws of a clamping machine with a central thermal conductive structure, including: a driving unit, a shell, an electromagnet and a hollow pipe fitting. The shell extends in an axial direction and has an opening in the axial direction. The hollow The pipe fitting is arranged in the shell and has an end connected to the opening. The electromagnet is arranged in the shell and surrounds the hollow pipe fitting; a cover body has a cover part, and the cover body is fixed to the shell and closes the cover part. The opening, the cover part includes a thermal conductive part extending in the axial direction; a magnetic conductive member is disposed in the shell, and the magnetic conductive member has an annular part extending from the end of the hollow tube and contacting the hollow The pipe member, the magnetic conductive member contacts the cover part, the magnetic conductive member has a top part against the heat conductive part, and the heat conductive part contacts the electromagnet. The driving device for the clamping claw of a clamping machine with a central thermal conductive structure as claimed in claim 1, wherein the electromagnet contacts the hollow tube. As claimed in claim 1, the driving device for the clamping claw of a clamping machine with a central thermal conductive structure, wherein the cover body has an outer ring surface and a plurality of heat dissipation fins, and the outer ring surface is sleeved on the outer shell to The cover is fixed on the shell, and each heat dissipation fin is disposed on the outer ring surface and extends along a radial direction. As claimed in claim 3, the driving device for the clamping claw of a clamping machine with a central thermal conductive structure, wherein there is a thermal conductive space between the cover part of the cover body and the electromagnet, and a thermal conductive medium is disposed in the thermal conductive space. The driving device for the clamping claw of a clamping machine with a central thermal conductive structure as claimed in claim 3, wherein the cover part and the thermal conductive part are integrally formed. The driving device for the clamping claw of a clamping machine with a central thermal conductive structure as claimed in claim 1, wherein the cover part has a first fixing part, the magnetic conductive member has a second fixing part, and the second fixing part is fixed on The first fixing part combines the magnetic conductive member with the cover part. The driving device for the clamping jaws of a clamping machine with a central thermal conductive structure as described in claim 1, wherein a recess is provided on the annular portion and forms a closed annular groove with the hollow tube, and there is another recess. A thermal conductive medium is arranged in the annular groove. A clamping jaw of a clamping machine with a central thermal conductive structure, including: a driving unit, a shell, an electromagnet and a hollow pipe fitting. The shell extends in an axial direction and has an opening in the axial direction. The hollow pipe fitting is provided in The shell has an end connected to the opening, and the electromagnet is arranged in the shell and surrounds the hollow pipe; a cover body has a cover portion, the cover body is fixed to the shell and the cover portion covers the opening, The cover part includes a thermal conductive part extending in the axial direction; a magnetic conductive member disposed in the housing, and the magnetic conductive member has an annular portion extending from the end of the hollow pipe and contacting the hollow pipe; The magnetic conductive member contacts the cover part, the magnetic conductive member has a top against the heat conductive part, and the heat conductive part contacts the electromagnet; a claw body has a shaft member, the claw body is connected to the drive unit, and the shaft member It is movably installed in the hollow pipe. The clamping claw of the object clamping machine with a central thermal conductive structure as described in claim 8, wherein the cover part has a first fixing part, the magnetic conductive member has a second fixing part, and the second fixing part is fixed on the first The fixing part combines the magnetic conductive member with the cover part.

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