TWI833612B - Telescopic wrench - Google Patents

Abstract

A telescopic wrench includes an outer tube, an outer ring and an inner rod. The outer ring includes a socket hole and reinforcing hole. The socket hole of the outer ring can be sleeved on the outer tube, and the reinforcing hole of the outer ring provides contact area with the outer peripheral side of a rod section of the inner rod, therefore the outer ring forms an external auxiliary socket structure with the inner rod and the outer tube. This provides a better structure for the telescopic wrench as when operating and using the conventional telescopic wrench, it is usually have looseness and abnormal noise problem. This structure further improves the structural strength to withstand the force during operating the telescopic wrench.

Description

Telescopic wrench

The present invention relates to a wrench, and in particular to a wrench having the ability to extend and shorten to change the overall length when the wrench is operated.

In many industries, bolts and nuts are used as components for assembly. In order to rotate the bolts and nuts, there are wrenches (such as open-end wrenches, torx wrenches, adjustable wrenches, etc.) for direct driving, or wrenches (socket wrenches, pneumatic wrenches, etc.) Wrench, electric wrench) adapter socket drive, etc.

The overall length of common wrenches is fixed. In certain situations, such as difficult-to-operate workspace areas deep in the device/structure or in small spaces, in order to cope with the above working conditions, choosing the appropriate wrench length is a consideration when purchasing. If it is a frequent use You need to go out for maintenance and repairs, and you need to carry wrenches of various lengths and sizes. This not only increases the purchase cost, but also increases the weight of carrying. It is also a test on the user's physical load and even affects work efficiency.

At present, the industry has developed wrenches that can adjust the overall length, such as Taiwan's new M429564, Mainland China's invention CN111975699B, and the United States' invention publication US20170312906A1. They mainly use the outer sleeve to sleeve the inner pipe. When adjusting the length, the inner pipe and the outer sleeve are closer to each other. When they slide axially in the direction of each other, they appear to be shortened, and when they slide axially away from each other, they appear to be elongated.

However, when the above-mentioned adjusting wrench stretches the entire length, the contact position (area) between the outer casing and the inner casing will gradually decrease, so that the force exerted on the wrench needs to be borne by the contact position between the two. Not only is the force excessively concentrated, There is concern that the structural strength is insufficient, and loosening may easily occur here or even abnormal noise may occur during operation. Relevant manufacturers must make structural improvements to the above-mentioned wrenches.

The invention provides a telescopic wrench, which includes: an outer tube, which has a sliding hole arranged along the axial direction of the outer tube; the outer tube has a first end and a second end in opposite directions to each other; and an outer ring, which has an axial direction. A socket hole and a reinforced hole connected to the socket hole are provided. The socket hole of the outer ring is sleeved on the first end of the outer tube; and the inner rod includes a working part and a connecting rod connecting the working part. Rod segment; the rod segment ring is provided with an outer ring groove, and the outer ring groove is equipped with an elastic washer; the rod segment is movably slidably installed in the sliding hole and the reinforced hole, and the elastic washer is compressed by contact with the sliding hole; The working part is exposed outside the first end.

The present invention provides another telescopic wrench, including: an outer tube with a sliding hole arranged along the axial direction of the outer tube; the outer tube has a first end and a second end in opposite directions to each other; the outer tube is located on the first The end is provided with a mounting hole connected to the sliding hole; the inner collar has a penetrating section and an external section at its opposite ends; the penetrating section is inserted into the mounting hole, and the external section is located at the first end On the outside; the inner collar has a reinforced hole that axially penetrates the penetration section and the external section, and the reinforced hole is connected to the sliding hole; and the inner rod includes a working part and a rod section connected to the working part, The rod section is movably slidably mounted on the sliding hole and the reinforcing hole, and the elastic washer is compressed under contact with the sliding hole; and the working part is exposed outside the external section.

Through the cooperation of the above structures, the outer ring and the inner ring can be firmly combined with the outer tube (first end), and the reinforced holes provide contact with the outer peripheral side of the rod section of the inner rod. The outer ring and the inner ring form a connection with the inner rod and the outer tube. The external auxiliary socket structure between the pipe and the pipe; thus providing a telescopic wrench during operation can improve the process. In the past, conventional structures were prone to loosening and abnormal noises, which further improved the structural strength to withstand the force during operation.

In addition, the elastic washer can compress and deform under force, providing a smooth damping feel when pushing or pulling the outer tube or inner rod to adjust the length of the telescopic wrench. It can also reduce the impact of external foreign matter and impurities entering the telescopic wrench. Adjust the overall length of the operation.

1:Telescopic wrench

100:Outer tube

101:First end

102:Second end

110: Sliding hole

120:Side hole

130: First restriction

140: Second restriction

160: placement hole

200:Coat ring

210:Socket hole

220: Reinforced hole

230: Contact surface

240: Escape hole

300:Inner rod

310:Work Department

320:rod section

321: Outer ring groove

322:Elastic washer

323:Side slot

324: Elastic parts

325: Bead body

326:Chute

327: Positioning concave

400:Control loop

410:Inward push torus

420: The first internal flash hole

430:Second internal flash hole

440: The first restricted surface

450: Second limit surface

510:Control the ball

520:Spring

600:Inner ferrule

610: Penetration section

620: External segment

630: Reinforced hole

640: Contact surface

The first figure is an exploded perspective view of the present invention.

The second figure is a schematic three-dimensional view of the combination of the present invention.

The third figure is a schematic diagram of adjusting the overall length of the telescopic wrench according to the present invention.

The fourth figure is a schematic cross-sectional view of line segment IV-IV in the third figure.

The fifth figure is a schematic cross-sectional view of the telescopic wrench adjusted along the line segment V-V in the third figure.

The sixth figure is a schematic cross-sectional view of line segment VI-IV in the second figure.

The seventh figure is a schematic cross-sectional view of line segment VII-VII in the second figure.

The eighth picture is a schematic diagram of the action of pulling the control ring in the seventh picture.

The ninth picture is a schematic diagram of the action of pulling the inner rod in the eighth picture.

The tenth picture is a schematic diagram of controlling the ball displacement during the action of pulling the inner rod in the ninth picture.

Figure 11 is a schematic cross-sectional view after adjusting the length of the telescopic wrench according to the present invention.

Figure 12 is an exploded perspective view of another embodiment of the present invention.

Figure 13 is a combined three-dimensional schematic diagram of another embodiment of the present invention.

Figure 14 is a schematic cross-sectional view of line segment XIV-XIV in Figure 13.

Referring to Figures 1 to 6, a telescopic wrench 1 is disclosed, which includes: an outer tube 100, which has a sliding hole 110 arranged along the axial direction of the outer tube 100; the outer tube 100 has sliding holes 110 in opposite directions to each other. The first end 101 and the second end 102; the outer ring 200, which has an axially arranged socket hole 210 and a reinforcing hole 220 communicating with the socket hole 210, and the socket hole 210 of the outer ring 200 is sleeved on the The first end 101 of the outer tube 100; and the inner rod 300, which includes a working part 310 and a rod section 320 connected to the working part 310. The rod section 320 is provided with an outer ring groove 321, and the outer ring groove 321 is An elastic washer 322 is provided. The rod section 320 is movable and slidable in the sliding hole 110 and the reinforced hole 220, and the elastic washer 322 is slightly compressed when contacted by the sliding hole 110; and the working part 310 is exposed at the first end. 101 outside.

When the telescopic wrench 1 of the present invention is actually used, with the cooperation of the above structures, the socket hole 210 of the outer ring 200 can be firmly inserted into the outer tube 100 (first end 101 ), and the reinforced hole 220 of the outer ring 200 provides the inner rod 300 When the outer circumferential side of the segment 320 is in contact (including when the rod segment 320 is in sliding contact with the reinforced hole 220 and when there is no sliding contact), the outer ring 200 forms an external auxiliary sleeve structure with the inner rod 300 and the outer tube 100; thus providing a telescopic wrench 1. During operation, it improves the common phenomenon that the structure is prone to looseness and abnormal noise in the past, and further improves the structural strength to withstand the force during operation.

The aforementioned elastic washer 322 is made of rubber material and can be compressed and deformed under force, but can return to its original shape when no force is applied. Through the above structure, when the outer tube 100 or the inner rod 300 is pushed or pulled to adjust the length of the telescopic wrench 1, a damped and smooth feeling of manual operation is formed, and it can also reduce the entry of external foreign matter and impurities that affect the operation of the telescopic wrench 1 to adjust the overall length.

The working part 310 of the inner rod 300 of the present invention may be an open-end wrench, a torx wrench, an adjustable wrench, a ratchet wrench, etc., and is not limited to the appearance of the working part 310 shown in the drawings. In addition to the above The collar 200 is made of non-rigid material, such as plastic material, and when the collar 200 is damaged, it can be replaced with a new one and reinstalled.

The detailed features of the telescopic wrench 1 of the present invention and the assembly relationship of related components will be further described in detail. The outer ring 200 has a contact surface 230 located between the socket hole 210 and the reinforcing hole 220 , and the contact surface 230 is in contact with the end surface of the first end 101 of the outer tube 100 . The aforesaid contact surface 230 is connected to the hole wall of the socket hole 210 and the hole wall of the reinforced hole 220, thereby increasing the contact position of the outer ring 200 on the rod section 320 and the outer tube 100, and providing the telescopic wrench 1 for operation. time structural stability.

Please refer to the sixth figure. The rod section 320 is provided with a side groove 323 on its outer circumferential side, and the two ends of an elastic member 324 are respectively used to spring against the side groove 323 and the bead 325, so that the bead 325 rolls. in contact with the sliding hole 110 . The aforementioned side groove 323 does not penetrate the radial direction of the rod segment 320, and the side groove 323 is located at the opposite end of the rod segment 320 connected to the working part 310; the elastic member 324 is a spring as an example, and the aforementioned bead 325 Taking the metal ball as an example, it provides operational stability when adjusting the overall length of the telescopic wrench 1 .

Please refer to Figures 1, 7 to 11. The rod section 320 is provided with a slide groove 326 along the axial direction of the rod section 320 on its outer peripheral side, and the slide groove 326 is along the axial direction of the slide groove 326. Positioning recesses 327 are provided at intervals; the outer tube 100 is provided with a side hole 120 connected to the sliding hole 110 on its outer peripheral side; the telescopic wrench 1 further includes a control ring 400 and is movably sleeved on the outer tube 100 and located on this side. The inner pushing annular surface 410 of the control ring 400 is located at an outer position of the side hole 120 , and the inward pushing annular surface 410 limits the movement of the control ball 510 in the side hole 120 to avoid moving toward the side hole 120 from the side hole 120 . The control ball 510 is disengaged from the outside, so that the control ball 510 is positioned in one of the positioning recesses 327 , that is, the control ball 510 is partially located in the side hole 120 and partially located in the positioning recess 327 . Through the above configuration, the positioning of the telescopic wrench 1 after adjusting the overall length and the selection of multiple sizes are provided.

In addition, the control ring 400 is provided with a first inner flash hole 420 and a second inner flash hole 430. The aforementioned inner push ring surface 410 is located between the first inner flash hole 420 and the second inner flash hole 430, and the outer Circumferential sleeve of tube 100 A first restricting member 130 is provided and located in the first inner flash hole 420; the telescopic wrench 1 further includes a spring 520 that is penetrated by the outer tube 100, and both ends of the spring 520 are respectively pressed against the first restricting member. 130 and the first limiting surface 440 of the control ring 400 . When the control ring 400 is pulled to move toward the second end 102, the inward pushing annular surface 410 of the control ring 400 is separated from the outer position of the side hole 120. When the second inner flash hole 430 of the control ring 400 comes to the side hole, 120 outside position, any one of the inner rod 300 and the outer tube 100 can be pushed or pulled smoothly. The side hole 120 of the outer tube 100 can drive the control ball 510 to escape from the original positioning recess 327, and the control ball 510 is partially exposed in the side hole 120. The outer side is located at the second inner flash hole 430, so that the control ball 510 can be passively displaced on the slide groove 326 until the positioning recess 327 at another position is selected, thus completing the length adjustment of the telescopic wrench 1. The aforementioned first restricting member 130 takes a C-shaped buckle as an example.

In this embodiment, the outer circumferential side of the outer tube 100 is covered with a second limiting member 140 and is spaced apart from the first limiting member 130; when the control ring 400 is pushed to displace toward the first end 101, the second limiting member 140 is disposed at a distance from the first limiting member 130. The restricting member 140 is in contact with the second restricting surface 450 of the control ring 400, thereby restricting the control ring 400 from being separated outward from the outer tube 100 from the direction of the first end 101. The aforementioned second restricting member 140 takes a C-shaped buckle as an example.

The length adjustment of the telescopic wrench 1 shown in Figures 8 to 11 of the drawings mainly involves holding the outer tube 100 with one hand and pulling the working part 310 of the inner rod 300 away from the outer tube 100 with the other hand. You can also hold the working part 310 of the inner rod 300 with one hand and pull the outer tube 100 away from the inner rod 300 with the other hand; or you can pull the working parts 310 of the outer tube 100 and the inner rod 300 with both hands in opposite directions to each other. .

Please refer to the seventh figure, the outer ring 200 is provided with an escape hole 240 and communicates with the socket hole 210, and one end of the control ring 400 is normally extended into the escape hole 240, and the outer ring 200 is not connected with the socket hole 210. The control rings 400 are in contact, so that the displacement action of the control rings 400 will not be affected.

Please refer to Figures 12 to 14 for another embodiment of the present invention, which is different from the above embodiment in that: the outer tube 100 is provided with a mounting hole 160 connected to the sliding hole 110 at the first end 101; The opposite ends of the collar 600 are respectively a penetration section 610 and an external section 620; the penetration section 610 is inserted into the placement hole 160, and the external section 620 is located outside the first end 101; the inner sleeve Ring 600 has an axial penetration through the The reinforced hole 630 of the section 610 and the external section 620 is connected to the sliding hole 110; and the working part 310 is exposed outside the external section 620.

In addition, the inner collar 600 is provided with a contact surface 640 between the penetration section 610 and the outer section 620 , and the contact surface 640 is in contact with the end surface of the first end 101 of the outer tube 100 , through the above structural configuration, the inner collar 600 can be added to provide structural stability when the telescopic wrench 1 is operated.

1:Telescopic wrench

100:Outer tube

101:First end

102:Second end

110: Sliding hole

200:Coat ring

210:Socket hole

220: Reinforced hole

240: Escape hole

300:Inner rod

310:Work Department

320:rod section

321: Outer ring groove

322:Elastic washer

323:Side slot

325: Bead body

326:Chute

327: Positioning concave

400:Control loop

Claims (4)

A telescopic wrench, including: an outer tube, which has a sliding hole arranged along the axial direction of the outer tube; the outer tube has a first end and a second end in opposite directions to each other; an outer ring, which has an axially arranged socket hole and a reinforced hole communicating with the socket hole. The socket hole of the outer ring is sleeved on the first end of the outer tube; and the inner rod includes a working part and a rod section connected to the working part; The rod segment ring is provided with an outer ring groove, and the outer ring groove is equipped with an elastic washer; the rod segment is movably slidable in the sliding hole and the reinforced hole, and the elastic washer is compressed by contact with the sliding hole; and the working part Exposed outside the first end; the telescopic wrench further includes a control ring and is movably sleeved on the outer tube. The control ring is provided with a first inner flash hole and a second inner flash hole and is sleeved on the peripheral side of the outer tube. There is a first limiting member located in the first inner flash hole; the telescopic wrench further includes a spring that is penetrated by the outer tube, and the two ends of the spring respectively resist the first limiting member and the first portion of the control ring. Limiting surface; the outer circumferential side of the outer tube is provided with a second limiting member and is spaced apart from the first limiting member; the outer ring is provided with an escape hole and communicates with the sleeve hole, and one end of the control ring is normally extended in in the escape hole, and the outer ring is not in contact with the control ring. The telescopic wrench according to claim 1, wherein the outer ring has a contact surface between the socket hole and the reinforcing hole, and the contact surface is in contact with the first end surface of the outer tube. The telescopic wrench as claimed in claim 1, wherein the rod section is provided with a side groove on its outer peripheral side, and two ends of an elastic member are respectively used to spring against the side groove and the bead body, so that the bead body contacts the sliding hole. . The telescopic wrench according to claim 1, wherein the rod segment is provided with a chute along the axial direction of the rod segment on its outer peripheral side, and the chute is provided with positioning recesses at intervals along the axial direction of the chute; The outer tube is provided with a side hole connected to the sliding hole on its outer circumferential side; and the inward pushing annular surface of the control ring is located outside the side hole, and the inward pushing annular surface restricts the movement of the control ball in the side hole to prevent it from The side hole escapes outward, so that the control ball is positioned in one of the positioning recesses.

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