An insert type fuse extractor

Abstract

The invention discloses a plug-in type fuse extractor, comprising a fixing frame, a hand-grip component, a push rod component, a transfer component and a clamping component; the fixing frame has a containing space for assembling accessories; the hand-grip components are symmetrically arranged in the fixing frame and can perform lateral movements in opposite directions on the fixing frame; the push rod component is located in the fixing frame and between two hand-grip components and can perform longitudinal movements on the fixing frame; the transfer component connects the hand-grip component and the push rod component, and converts the lateral force generated by the hand-grip component into longitudinal force through the transfer component and transmits it to the push rod component; the clamping components are symmetrically arranged on both sides of the push rod component, one end of the clamping components is fixedly connected to the bottom of the corresponding hand-grip component, and the other end is used for pressing the plug-in type fuse installed in the fuse box base, and the clamping components on both sides can pull out the plug-in type fuse by continuously pressing the fuse box base with the push rod component, thereby solving the problem that the conventional extractor is not suitable for a narrow working space.

Description

Technical Field

[0001] The present invention relates to a fuse extractor, and more particularly to a blade type fuse extractor. Background Art

[0002] Blade type fuses have been widely used in daily production and life, and a convenient extraction tool is needed to improve work efficiency; considering the narrow operation space, a compact extraction tool is required to safely extract the surface-mounted fuse and reduce damage.

[0003] The existing method for extracting blade type fuses is to hold and extract them with fingers, and its working principle is as Figure 1 shown. 1 is an existing blade type fuse extractor, generally made of plastic, and 2 is a blade type fuse. During operation, manually press both sides of the existing blade type fuse extractor 1, and then extract it upward perpendicular to the direction of the blade type fuse 2 to extract the blade type fuse 2.

[0004] However, the existing method for extracting blade type fuses has the following deficiencies:

[0005] (1) Although the existing extraction tool is easy to operate, in an electrical system, the surface-mounted fuse is firmly fixed, and the clamping and extraction force of the fingers is often insufficient. Operators generally shake it left and right, which easily causes damage to the fuse;

[0006] (2) During extraction, a large amount of lateral and longitudinal operation space is required, and it is not easy to extract the fuse in a narrow space. Summary of the Invention

[0007] In view of the deficiencies of the existing technology, the present invention provides a blade type fuse extractor, which adopts a hand-held operation method, making it easier to exert force. At the same time, it does not need to shake left and right during extraction, greatly reducing damage to the fuse, saving effort and ensuring safety at the same time; during extraction, only an operation space slightly larger than the device is required, solving the drawback that the conventional extractor is not suitable for narrow working spaces.

[0008] The present invention is implemented according to the following technical solutions:

[0009] An insert - type fuse extractor includes a fixed frame, a hand - holding component, a push - rod component, a transfer component, and a clamping component; the fixed frame has an accommodation space for assembling accessories; the hand - holding components are symmetrically arranged in the fixed frame and can perform transverse movement towards or away from each other on the fixed frame; the push - rod component is located in the fixed frame and between the two hand - holding components and can perform longitudinal movement on the fixed frame; the transfer component connects the hand - holding components and the push - rod component, converting the transverse force generated by the hand - holding components into a longitudinal force through the transfer component and transmitting it to the push - rod component; the clamping components are symmetrically arranged on both sides of the push - rod component, one end of which is fixedly connected to the bottom of the corresponding hand - holding component, and the other end is used to tightly press the insert - type fuse installed in the fuse - box base, and the insert - type fuse is pulled out by the two clamping components on both sides through the continuous pressing of the push - rod component against the fuse - box base.

[0010] In some embodiments, the hand - holding component is a handle, which is composed of a top guide seat, a middle rod part, and a bottom guide seat; a through - short guide groove is provided on the top guide seat, and a positioning groove and a through - long guide groove are provided on the bottom guide seat; wherein, the short guide groove and the long guide groove are arranged in parallel, and the positioning groove is arranged perpendicular to the long guide groove.

[0011] In some embodiments, a guide component is respectively inserted into the short guide grooves of the top guide seats on both sides and the long guide grooves of the bottom guide seats on both sides to limit the sliding of the two handles in the guide components; a positioning pin is installed in the positioning groove, and the positioning pin is also inserted into the positioning - pin guide groove on the fixed frame to realize the sliding of the two handles in the fixed frame.

[0012] In some embodiments, a handle spring is sleeved on the guide component between the two handles to tightly press the two handles outwards through the handle spring.

[0013] In some embodiments, the guide component in the top guide seat is composed of a short guide rod and a guide - rod screw;

[0014] The guide component in the bottom guide seat is composed of a long guide rod and a guide - rod screw; a short guide rod is inserted into the short guide grooves of the top guide seats on both sides, and a long guide rod is inserted into the long guide grooves of the bottom guide seats on both sides, and they are connected by guide - rod screws at the ends of the short guide rod and the long guide rod to limit the two handles in the short guide rod and the long guide rod.

[0015] In some embodiments, the push - rod component includes two symmetrically arranged push - rods and a guide - rod arm; a roller shaft hole is provided at the top of the push - rod, and a positioning hole Ⅰ is provided in the upper - middle part; the guide - rod arm is provided with a positioning hole Ⅱ and an arm shoulder, and a screw passes through the positioning hole Ⅱ and is bolt - connected to the positioning hole Ⅰ to fix the guide - rod arm on the push - rod, and the guide - rod arm can freely slide on the push - rod guide groove on the fixed frame, and the arm shoulder can prevent the guide - rod arm from falling off the fixed frame during movement.

[0016] In some embodiments, a spring seat I is further provided on the guide rod arm, a spring seat II is provided at the bottom of the push rod guide groove, and a push rod spring is connected between the spring seat I and the spring seat II to push the push rod upward.

[0017] In some embodiments, the adapter component includes an elliptical wheel and a roller; the center rotation of the elliptical wheel is connected to the top of the fixed frame, and the circumferential contour of the elliptical wheel is closely attached to the inner side of the hand-grip component; the center rotation of the roller is connected to the top of the push rod component, and the circumferential contour of the roller is closely attached to the circumferential contour of the circular wheel.

[0018] In some embodiments, an elliptical wheel arm is symmetrically arranged at the center of both side surfaces of the elliptical wheel, and the elliptical wheel arms on both sides are respectively inserted into the elliptical wheel axle holes at the top of the corresponding fixing frame; a roller arm is symmetrically arranged at the center of both side surfaces of the roller, and the roller arms on both sides are respectively inserted into the roller axle holes at the top of the corresponding top rod component.

[0019] In some embodiments, the clamping component is a clamping rod, and the clamping rods on both sides are arranged in a V shape; a rubber sleeve is provided at the end of the clamping rod in contact with the plug-in fuse.

[0020] In some embodiments, the cross-section of the fixing frame is triangular and the longitudinal section is U-shaped; two elliptical wheel axle holes are symmetrically provided on the top of the fixing frame, two locating pin guide grooves are symmetrically provided at both ends of the bottom of the fixing frame, two push rod guide grooves are symmetrically provided in the middle and lower part of the fixing frame, and a spring seat II is provided at the bottom of the push rod guide groove.

[0021] Beneficial effects of the present invention:

[0022] (1) Compared with the traditional finger-pinching extractor, the extractor disclosed in the present invention adopts a hand-held operation mode, which is easier to exert force. At the same time, there is no need to shake left and right when extracting, which greatly reduces the damage to the fuse, saving effort and achieving safety at the same time;

[0023] (2) When extracting, only an operating space slightly larger than that of the extractor disclosed in the present invention is required, thereby solving the problem that conventional extractors are not suitable for use in narrow working spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0025] In the attached picture:

[0026] Figure 1Schematic structural diagram of an existing plug-in fuse extractor;

[0027] Figure 2 Schematic diagram of the overall structure of the plug-in fuse extractor of the present invention;

[0028] Figure 3 Schematic diagram of a partial structure of the plug-in fuse extractor of the present invention (removing the fixing frame);

[0029] Figure 4 Schematic diagram of the handle structure of the present invention;

[0030] Figure 5 Schematic diagram of the ejector rod structure of the present invention;

[0031] Figure 6 Schematic diagram of the guiding component structure of the present invention (a is the short guide rod, b is the long guide rod);

[0032] Figure 7 Schematic diagram of the elliptical wheel and roller structure of the present invention;

[0033] Figure 8 Schematic diagram of the fixing frame structure of the present invention;

[0034] Figure 9 Schematic diagram of the guide rod arm structure of the present invention.

[0035] Reference numerals in the drawings: 1 - existing plug-in fuse extractor, 2 - plug-in fuse, 3 - handle, 4 - short guide rod, 5 - elliptical wheel, 6 - fixing frame, 7 - long guide rod, 8 - handle spring, 9 - ejector rod spring, 10 - guide pin, 11 - roller, 12 - ejector rod, 13 - clamping rod, 14 - guide rod screw, 15 - guide rod arm, 16 - screw, 17 - rubber sleeve, 18 - fuse box base, 19 - short guide groove, 20 - long guide groove, 21 - positioning groove, 22 - roller shaft hole, 23 - positioning hole Ⅰ, 24 - screw hole, 25 - screw hole, 26 - elliptical wheel arm, 27 - roller arm, 28 - elliptical wheel shaft hole, 29 - ejector rod guide groove, 30 - spring seat Ⅱ, 31 - guide pin positioning groove, 32 - positioning hole Ⅱ, 33 - spring seat Ⅰ, 34 - arm shoulder.

[0036] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] As Figure 2 、 Figure 3 shown, an insert type fuse extractor mainly consists of a handle 3, a short guide rod 4, an elliptical wheel 5, a fixed bracket 6, a long guide rod 7, a handle spring 8, a push rod spring 9, a guide pin 10, a roller 11, a push rod 12, a clamping rod 13, a guide rod screw 14, a guide rod arm 15, a screw 16, and a rubber sleeve 17.

[0041] The following further explains some of the above components.

[0042] As Figure 4 shown, the handle 3 is composed of a top guide seat, a middle rod portion, and a bottom guide seat. A through short guide groove 19 is provided on the top guide seat, and a positioning groove 21 and a through long guide groove 20 are provided on the bottom guide seat; the short guide groove 19 and the long guide groove 20 are arranged in parallel, and the positioning groove 21 is arranged perpendicular to the long guide groove 20.

[0043] As Figure 5 shown, a roller shaft hole 22 is provided at the top of the push rod 12, and a positioning hole I 23 is provided in the upper middle part.

[0044] As Figure 6 shown, a screw hole 24 is provided at one end of the short guide rod 4, and a screw hole 25 is provided at one end of the long guide rod 7.

[0045] As Figure 7 shown, an elliptical wheel arm 26 is symmetrically arranged at the center of each side surface of the elliptical wheel 5, and a roller arm 27 is symmetrically arranged at the center of each side surface of the roller 11.

[0046] As Figure 8As shown, the cross-section of the fixing bracket 6 is triangular, and the longitudinal section is U-shaped; two elliptical wheel shaft holes 28 are symmetrically provided at the top of the fixing bracket 6, two positioning pin guide grooves 31 are symmetrically provided at both ends of the bottom of the fixing bracket 6, two ejector rod guide grooves 29 are symmetrically provided in the middle and lower part of the fixing bracket 6, and a spring seat II 30 is provided at the bottom of the ejector rod guide groove 29.

[0047] As Figure 9 shown, positioning holes II 32, spring seats I 33 and arm shoulders 34 are provided on the guide rod arm;

[0048] Continue to refer to Figure 2 、 Figure 3 shown, Figure 3 As shown, some components of the plug-in fuse extractor are removed, showing the internal structure of the plug-in fuse extractor. Under normal conditions, the plug-in fuse 2 is inserted into the fuse jack of the fuse box base 18. The jack of the fuse box base 18 has a certain clamping force on the plug-in fuse 2. The function of the plug-in fuse extractor is to extract the plug-in fuse 2 from the jack of the fuse box base 18.

[0049] Continue to refer to Figure 3 shown, the handles 3 on both sides are slidably connected to the short guide rods 4. The short guide rods 4 can slide freely in the short guide grooves 19 of the handles 3. The screw holes 24 of the short guide rods 4 are threadedly connected to the guide rod screws 14. Under normal conditions, the guide rod screws 14 are tightened with the short guide rods 4 and there is no relative movement; the handles 3 are slidably connected to the long guide rods 7. The long guide rods 7 can slide freely in the long guide grooves 20 of the handles 3. The screw holes 25 of the long guide rods 7 are threadedly connected to the guide rod screws 14. Under normal conditions, the guide rod screws 14 are tightened with the long guide rods 7 and there is no relative movement.

[0050] Continue to refer to Figure 3 shown, under normal conditions, the handle spring 8 has a certain elastic force, so that the outer sides of the handles 3 are pressed against the short guide rods 4, the long guide rods 7 and the guide rod screws 14.

[0051] (6)As Figure 2 、 Figure 3As shown, the elliptical wheel arms 26 on both sides of the elliptical wheel 5 are in rolling connection with the elliptical wheel shaft holes 28 on both sides of the fixed frame 6. The elliptical wheel 5 can perform circular motion at a certain angle with the elliptical wheel shaft hole 28 as the axis; the positioning groove 21 of the handle 3 is in threaded connection with the guide pin 10 and tightened; the positioning pin guide groove 31 on the fixed frame 6 is in sliding connection with the guide pin 10, and the guide pin 10 can slide left and right in the positioning pin guide groove 31. The screw 16 is in threaded connection with the positioning hole I 23 of the ejector rod 12. The screw 16 passes through the positioning hole II 32 of the guide rod arm 15 and is in threaded connection with the positioning hole I 23 to fix the guide rod arm 15 on the ejector rod 12. The guide rod arm 15 can freely slide on the ejector rod guide groove 29 of the fixed frame 6. The arm shoulder 34 on the guide rod arm 15 can prevent the guide rod arm 15 from detaching from the fixed frame 6 during movement; the roller arms 27 on both sides of the roller 11 are in rolling connection with the roller shaft holes 22 of the ejector rod 12, and the roller 11 can perform circular motion with the roller shaft hole 22 as the axis; the clamping rod 13 can be slightly bent when receiving an external force (to protect the plug-in fuse 2 from being damaged). The clamping rod 13 is rigidly connected to the bottom of the handle 3, and their relative positions always remain unchanged. To avoid the clamping rod 13 damaging the plug-in fuse 2 during extraction, the rubber sleeve 17 is made of rubber material. The rubber sleeve 17 is sleeved on the clamping rod 13 with a certain pre-tightening force, and the rubber sleeve 17 can be replaced later.

[0052] Continue to refer to Figure 2 As shown, under normal conditions, the ejector rod spring 9 has a certain elastic force. Its two ends are respectively inserted into the spring seat I 33 of the guide rod arm 15 and the spring seat II 30 of the fixed frame 6. Due to the elastic force of the ejector rod spring 9, the roller 11 presses tightly against the elliptical wheel 5, and the circumferential contour of the elliptical wheel 5 is in close contact with the inner side of the handle 3, maintaining a relatively stable state of the handle 3 and the ejector rod 12.

[0053] Working principle: As Figure 3As shown, before pulling out the plug-in fuse 2, the rubber sleeve 17 is placed at a certain distance below the T-shaped head of the plug-in fuse 2, and there is a certain distance in the vertical direction between the rubber sleeve 17 and the fuse box base 18. When pulling out, hold the two handles 3 tightly with one hand and apply pressure. The pressure on the handle 3 causes the distance between the two handles 3 to become smaller on the one hand. The handle 3 drives the clamping rod 13 to move, and the clamping rod 13 drives the rubber sleeve 17 to move, causing the two rubber sleeves 17 to clamp the plug-in fuse 2. On the other hand, the pressure on the handle 3 causes the elliptical wheel 5 to rotate. The rotation of the elliptical wheel 5 generates a downward force on the roller 11. The roller 11 transmits the force to the ejector rod 12. The ejector rod 12 slides vertically downward under the guidance of the screw 16. When the ejector rod 12 touches the fuse box base 18, the two rubber sleeves 17 have already clamped the plug-in fuse 2. Continuing to squeeze the two handles 3, the ejector rod 12 will continue to move downward. The position of the fuse box base 18 remains fixed. Due to the balance of two forces, the fuse box base 18 generates a vertically upward thrust on the ejector rod 12. According to the principle of force transmission, the force is transmitted from the ejector rod 12 to the roller 11, from the roller 11 to the elliptical wheel 5, from the elliptical wheel 5 to the fixing bracket 6, from the fixing bracket 6 to the guide pin 10, from the guide pin 10 to the handle 3, from the handle 3 to the clamping rod 13, and the clamping rod 13 generates an upward displacement. The clamping rod 13 drives the rubber sleeve 17, and the rubber sleeve 17 drives the plug-in fuse 2 to move upward. After the plug-in fuse 2 is clamped, it continues to move upward, realizing safe and convenient extraction.

[0054] As can be seen from the above, compared with the traditional finger-pinching extractor, the device adopts a hand-held operation method, which is easier to exert force. At the same time, there is no need to shake left and right during extraction, greatly reducing the damage to the fuse, achieving both labor-saving and safety. During extraction, only a working space slightly larger than the device is required, solving the drawback that the conventional extractor is not applicable to narrow working spaces.

[0055] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0056] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments rather than other features, the combination of features of different embodiments also means being within the protection scope of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by this application.

[0057] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An insertion type fuse extractor, characterized in that, it includes: A fixed frame with an accommodation space for assembling accessories; A hand-held component symmetrically arranged in the fixed frame and capable of performing transverse movement in the fixed frame in opposite or reverse directions; A push rod component located in the fixed frame and between the two hand-held components and capable of performing longitudinal movement in the fixed frame; A transfer component connecting the hand-held component and the push rod component to convert the transverse force generated by the hand-held component into a longitudinal force through the transfer component and transmit it to the push rod component; A clamping component symmetrically arranged on both sides of the push rod component, one end of which is fixedly connected to the bottom of the corresponding hand-held component, and the other end is used to tightly press the insertion type fuse installed in the fuse box base, and the insertion type fuse is pulled out by the clamping components on both sides through the continuous pressing of the push rod component against the fuse box base; The push rod component includes: Two symmetrically arranged push rods, with a roller shaft hole at the top of the push rod and a positioning hole Ⅰ in the upper middle part; A guide rod arm provided with a positioning hole Ⅱ and an arm shoulder. A screw passes through the positioning hole Ⅱ and is bolted to the positioning hole Ⅰ to fix the guide rod arm on the push rod, and the guide rod arm can freely slide on the push rod guide groove of the fixed frame. The arm shoulder can prevent the guide rod arm from falling off the fixed frame during movement; A spring seat Ⅰ is also provided on the guide rod arm, and a spring seat Ⅱ is provided at the bottom of the push rod guide groove. A push rod spring is connected between the spring seat Ⅰ and the spring seat Ⅱ to push the push rod upward tightly through the push rod spring; The transfer component includes: An elliptical wheel, the center of which is rotatably connected to the top of the fixed frame, and the circumferential contour of the elliptical wheel is in close contact with the inner side of the hand-held component; An elliptical wheel arm is symmetrically arranged at the center of each side surface of the elliptical wheel, and the elliptical wheel arms on both sides are respectively inserted into the elliptical wheel shaft holes at the top of the corresponding fixed frame; A roller, the center of which is rotatably connected to the top of the push rod component, and the circumferential contour of the roller is in close contact with the circumferential contour of the elliptical wheel; A roller arm is symmetrically arranged at the center of each side surface of the roller, and the roller arms on both sides are respectively inserted into the roller shaft holes at the top of the corresponding push rod component.

2. An insertion type fuse extractor according to claim 1, characterized in that: The hand-held component is a handle, which is composed of a top guide seat, a middle rod part and a bottom guide seat; A through short guide groove is provided on the top guide seat, and a positioning groove and a through long guide groove are provided on the bottom guide seat; Among them, the short guide groove and the long guide groove are arranged in parallel, and the positioning groove is arranged perpendicular to the long guide groove.

3. An insertion type fuse extractor according to claim 2, characterized in that: A guide component is respectively inserted into the short guide grooves on the top guide seats on both sides and the long guide grooves on the bottom guide seats on both sides to limit the sliding of the two handles in the guide component; A positioning pin is installed in the positioning groove, and the positioning pin is also inserted into the positioning pin guide groove on the fixed frame to realize the sliding of the two handles in the fixed frame.

4. An insertion type fuse extractor according to claim 3, characterized in that: A handle spring is sleeved on the guide component between the two handles to push the two handles outward tightly through the handle spring.

5. An insertion type fuse extractor according to claim 3, characterized in that: the guiding component in the top guiding seat is composed of a short guide rod and a guide rod screw; the guiding component in the bottom guiding seat is composed of a long guide rod and a guide rod screw; the short guide rods are inserted into the short guide grooves of the top guiding seats on both sides, the long guide rods are inserted into the long guide grooves of the bottom guiding seats on both sides, and are connected to the ends of the short guide rods and the long guide rods through the guide rod screws, and the two handles are limited in the short guide rods and the long guide rods.

6. An insertion type fuse extractor according to claim 1, characterized in that: the clamping component is a clamping rod, and the clamping rods on both sides are arranged in a V shape; a rubber sleeve is arranged at the end of the clamping rod in contact with the insertion type fuse.

7. An insertion type fuse extractor according to claim 1, characterized in that: the cross section of the fixing frame is triangular and the longitudinal section is U-shaped; two elliptical wheel shaft holes are symmetrically arranged at the top of the fixing frame, two positioning pin guiding grooves are symmetrically arranged at both ends of the bottom of the fixing frame, two ejector rod guiding grooves are symmetrically arranged in the middle and lower parts of the fixing frame, and a spring seat II is arranged at the bottom of the ejector rod guiding groove.

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