Length-adjustable operating grab handle and using method

Abstract

The invention discloses a length-adjustable operating grab handle and a using method, the length-adjustable operating grab handle comprises a plurality of sleeves (1) which are arranged in an inner and outer nesting mode, a mounting cavity (2) is formed between every two adjacent sleeves (1), a limiting assembly is arranged in each mounting cavity (2), and the outer portions of the limiting assemblies are connected with the two sleeves (1) respectively and used for enabling the two sleeves (1) to be in mutual friction limiting; the limiting assembly comprises a first friction belt (3) and a second friction belt (4), the first friction belt (3) is located on the inner wall, on the outer side of the mounting cavity (2), of the sleeve (1), the second friction belt (4) is located on the outer wall, on the inner side of the mounting cavity (2), of the sleeve (1), and the first friction belt (3) and the second friction belt (4) are staggered in the circumferential direction of the sleeve (1). The telescopic clothes hanger has the advantages of being capable of freely stretching out and drawing back and convenient to carry.

Description

TECHNICAL FIELD

[0001] The present application relates to an operating handle, in particular, a length-adjustable operating handle and a use method. BACKGROUND

[0002] During the actual operation of electrical equipment in a hydropower plant, the control buttons or operating parts of some electrical equipment are often installed on the inside of the equipment and are blocked by external mechanical structures, making it difficult for the operator to directly access them. To address this issue, operators currently use operating tools with handles and joints of specific lengths that are designed for different positions and specifications of the operating parts, allowing the operator to insert the joint into the equipment through the handle and perform pressing, rotating, pushing, and pulling actions on the operating part.

[0003] However, this operating tool has the following drawbacks: since the insertion positions of different control buttons or operating parts vary, it is difficult for the operator to use a fixed-length handle to operate the operating parts with different insertion positions. To address this issue, there are handles on the market that have telescoping and length-adjustable functions. However, most of these handles fall into two categories: the first type uses a two-segment structure, with two sleeves nested inside and outside each other and connected by a telescopic lock buckle, allowing them to be positioned at any extended position and achieve length adjustment. However, this structure can only extend to twice the length of the body, resulting in a handle body that is too long and not easy to carry.

[0004] The second type uses a multi-segment structure, with multiple sleeves nested inside each other and fixed by a bump bead pin. This method can effectively increase the extended length of the handle compared to the first type, but since it cannot use a telescopic lock buckle to position the sleeves at any telescopic position, the handle can only be adjusted to a limited number of lengths, reducing the length adjustment effect of the handle.

[0005] Therefore, the existing operating tools for electrical equipment in a hydropower plant have the problem of not being able to freely telescope the handle. SUMMARY

[0006] The present application aims to provide a length-adjustable operating handle that can simultaneously have the characteristics of free telescoping and easy portability.

[0007] The technical scheme of the present application is: a length-adjustable operation handle, comprising a plurality of sleeves arranged in an inner-outer nested manner, an installation cavity is formed between adjacent sleeves, a limiting assembly is arranged in the installation cavity, the outer part of the limiting assembly is connected with two sleeves respectively and is used for limiting the mutual friction between the two sleeves; the limiting assembly comprises a first friction belt and a second friction belt, the first friction belt is arranged on the inner wall of the sleeve outside the installation cavity, the second friction belt is arranged on the outer wall of the sleeve inside the installation cavity, and the first friction belt and the second friction belt are mutually staggered along the circumference of the sleeve.

[0008] In the length-adjustable operation handle, the single-side thickness of the installation cavity is a, the thickness of the first friction belt and the second friction belt is b, and 2b>a>b.

[0009] In the length-adjustable operation handle, the number of the first friction belts is two and they are symmetrically distributed on the two sides of the inner wall of the sleeve, and the number of the second friction belts is two and they are symmetrically distributed on the two sides of the outer wall of the sleeve.

[0010] In the length-adjustable operation handle, an installation gap is formed between the first friction belt and the second friction belt; the bottom of the sleeve is provided with two symmetric elastic parts, and a protrusion located in the installation gap is arranged on the elastic part.

[0011] In the length-adjustable operation handle, the installation gap is divided into a first installation gap and a second installation gap, the first installation gap and the second installation gap are respectively located on the left and right sides of the first friction belt, a clamping tooth is arranged on the inner wall of the sleeve at equal intervals along the length direction of the sleeve in the second installation gap, and the outer end of the protrusion forms a clamping buckle matched with the clamping tooth.

[0012] In the length-adjustable operation handle, a third friction belt is further arranged, the third friction belt is located on the top of the inner wall of the sleeve outside the installation cavity and completely covers the installation gap along the circumference.

[0013] In the length-adjustable operation handle, the first friction belt, the second friction belt and the third friction belt are all adhesive tapes adhered on the outer wall or the inner wall of the sleeve, and the surface of the adhesive tape forms a rough surface.

[0014] In the length-adjustable operation handle, the first friction belt, the second friction belt and the third friction belt are all frosted layers coated on the surface of the outer wall or the inner wall of the sleeve.

[0015] In the length-adjustable operation handle, the top of the sleeve located at the most inner side in the radial direction is provided with a threaded head used for connecting an operation connector.

[0016] The use method of the length-adjustable operation handle is as follows: ① Pull the sleeve located on the radial inner side outward to the specified length, and when the sleeve is pulled out, the first friction band and the second friction band are in a state of mutual misalignment along the circumference; ② Rotate the sleeve to make the first friction band and the second friction band overlap each other, and use the friction force of the first friction band and the second friction band after overlap to make the two adjacent sleeves form a friction limit. ③ Following steps ① and ②, pull out each sleeve to the specified length and rotate it to fix it; ④ Install the operating connector of the electrical equipment at the end of the sleeve, and then hold the sleeve to insert the operating connector into the inside of the equipment for operation.

[0017] Compared with the prior art, the present invention has the following characteristics: (1) The present invention, through the structural cooperation of the first friction belt and the second friction belt, enables the adjacent sleeves to form a gap fit and freely rise and fall when the first friction belt and the second friction belt are in a state of separation; and when the first friction belt and the second friction belt are in a state of overlap, the adjacent sleeves will form an interference fit and achieve a friction limiting effect; on the basis of the above, the operator can realize the limiting of the sleeve at any extended position by rotating the sleeve, thereby improving the operational convenience of the present invention. (2) By combining the elastic part, the protrusion and the installation gap, the operator can judge whether the sleeve has been rotated into place based on the rotation state of the sleeve when rotating the sleeve, thereby improving the effectiveness of the invention. (3) Based on the above, by using the structure of the snap teeth and snap buckles, the sleeve can be rigidly limited after it is rotated into place, thereby effectively reducing the possibility of the sleeve shrinking under force when the present invention is pushed, and improving the stability of the present invention. (4) By setting the third friction band, it can also work with the elastic part to limit the extension position of the sleeve, thereby preventing the sleeve from being completely pulled out due to improper operation by the operator, thus ensuring the stability of the use of the present invention. Therefore, the present invention can simultaneously possess the characteristics of free stretching and easy portability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Example 1; Figure 2 yes Figure 1 Sectional view along direction A; Figure 3 yes Figure 2 Sectional view along line C; Figure 4 yes Figure 1 Sectional view along direction B; Figure 5 This is a structural schematic diagram of Example 2; Figure 6 is a D sectional view of Figure 5 Figure 7 is a F sectional view of Figure 6 Figure 8 is a E sectional view of Figure 5 Figure 9 is a schematic view of the connection of the protrusion and the clamping tooth in Example 3.

[0019] The reference signs in the drawing are: 1 - sleeve, 2 - installation cavity, 3 - first friction band, 4 - second friction band, 5 - elastic part, 6 - protrusion, 7 - first installation gap, 8 - second installation gap, 9 - clamping tooth, 10 - third friction band, 11 - threaded head. DETAILED DESCRIPTION

[0020] The application will be further described below in conjunction with the drawings and examples, but it is not limited to the basis of the application.

[0021] Example 1. A length-adjustable operating handle, which is configured as shown in Figures 1-4 , comprising a plurality of sleeves 1 arranged in an inner-outer nested manner, installation cavities 2 are formed between adjacent sleeves 1, a limiting assembly is arranged in the installation cavity 2, the outer part of the limiting assembly is connected to two sleeves 1 respectively and is used to limit the mutual friction between the two sleeves 1; the limiting assembly comprises a first friction band 3 and a second friction band 4, the first friction band 3 is located on the inner wall of the sleeve 1 on the outside of the installation cavity 2, and the second friction band 4 is located on the outer wall of the sleeve 1 on the inside of the installation cavity 2, the first friction band 3 and the second friction band 4 are mutually misaligned along the circumference of the sleeve 1.

[0022] The single-sided thickness of the installation cavity 2 is a, and the thickness of the first friction band 3 and the second friction band 4 is b, then 2b > a > b; that is, when the first friction band 3 and the second friction band 4 are in a mutually overlapping state, the inner and outer two sleeves 1 form an interference fit, and when the first friction band 3 and the second friction band 4 are in a mutually misaligned state, the inner and outer two sleeves 1 form a clearance fit.

[0023] The number of the first friction band 3 is two and is symmetrically distributed on both sides of the inner wall of the sleeve 1, and the number of the second friction band 4 is two and is symmetrically distributed on both sides of the outer wall of the sleeve 1.

[0024] The first friction band 3 and the second friction band 4 form an installation gap; the bottom of the sleeve 1 is provided with two symmetric elastic parts 5, and the elastic part 5 is provided with a protrusion 6 located in the installation gap.

[0025] ​​​The two sides of the protruding block 6 are provided with arc-shaped surfaces matched with the first friction belt 3, so that the sleeve 1 can be pressed radially inward by the first friction belt 3 through the inclined surface on the protruding block 6, thereby driving the protruding block 6 to shrink to the radially inner side of the first friction belt 3.

[0026] The two sides of the elastic part 5 are separated from the sleeve 1 by the U-shaped groove, so that the elastic part 5 has the functions of stress deformation and elastic recovery; that is, the elastic part 5 can deform inward after being pressed by the first friction belt 3, and recover to the original position after entering the installation gap.

[0027] It also includes a third friction belt 10 located on the top of the inner wall of the sleeve 1 outside the installation cavity 2 and completely covering the installation gap in the circumferential direction; the third friction belt 10 and the clamping teeth 9 are arranged in an upper and lower side-by-side manner along the length direction of the sleeve 1.

[0028] The first friction belt 3, the second friction belt 4 and the third friction belt 10 are all adhesive tapes adhered to the outer wall or the inner wall of the sleeve 1, and the surface of the adhesive tape forms a rough surface.

[0029] The top of part of the sleeve 1 is provided with a retaining ring, which can prevent the sleeve 1 on the radially inner side from being pulled out from below after the two sleeves 1 are nested.

[0030] The top of the sleeve 1 on the radially innermost side is provided with a threaded head 11 for connecting an operating joint.

[0031] When the embodiment is in a free telescopic state, the first friction belt 3 and the second friction belt 4 between the adjacent sleeves 1 are circumferentially offset from each other, so that the sleeve 1 can be freely telescoped to a designated position as required by the operator. When the sleeve 1 is extended to the position, the operator rotates the sleeve 1, so that the second friction belt 4 is rotated to overlap the first friction belt 3, thereby using the mutual friction of the first friction belt 3 and the second friction belt 4 in the pressed state to axially limit the sleeve 1, realizing the positioning function of the embodiment at any length. On the basis of the above, the operator can fix the corresponding operating joint to the end of the handle through the threaded head 11, and then use the handle to extend the operating joint into the inside of the equipment and perform switch operations such as pushing and pulling, rotating and pressing on the control button.

[0032] During the rotation and positioning of the sleeve 1, the elastic part 5 rotates from the installation gap on one side of the first friction belt 3 to the installation gap on the other side, so that the operator can determine whether the sleeve 1 is rotated to the position by the rotation resistance, thereby improving the use effect of the embodiment.

[0033] Embodiment 2. A method for using a length-adjustable operating handle, which uses the length-adjustable operating handle of embodiment 1 for operation, and specifically includes the following steps: ① the inner sleeve 1 is pulled out to a specified length, and the first friction band 3 and the second friction band 4 are in a circumferential misalignment state when the inner sleeve 1 is pulled out, and the elastic part 5 of the inner sleeve 1 is located in the installation gap between the first friction band 3 and the second friction band 4; ② the inner sleeve 1 is rotated to make the first friction band 3 and the second friction band 4 overlap each other, and the adjacent two sleeves are frictionally limited by the friction force of the first friction band 3 and the second friction band 4 after overlapping, and the elastic part 5 of the inner sleeve 1 is rotated from the installation gap on one side of the first friction band 3 to the installation gap on the other side of the first friction band 3; ③ the sleeves are sequentially pulled out to a specified length and rotated and fixed in the manner of steps ① and ②; ④ the operation joint of the electrical equipment is screwed on the threaded head 11 at the end of the sleeve, and then the operation joint is inserted into the inside of the equipment by holding the sleeve to press, push and pull or rotate.

[0034] Embodiment 3. An operation handle with adjustable length, which is composed of Figures 5-8 a plurality of sleeves 1 arranged in an inner-outer nested manner, an installation cavity 2 is formed between the adjacent sleeves 1, a limiting assembly is arranged in the installation cavity 2, the outer part of the limiting assembly is connected with two sleeves 1 respectively and is used for frictionally limiting the two sleeves 1 relative to each other; the limiting assembly comprises a first friction band 3 and a second friction band 4, the first friction band 3 is located on the inner wall of the sleeve 1 on the outer side of the installation cavity 2, the second friction band 4 is located on the outer wall of the sleeve 1 on the inner side of the installation cavity 2, and the first friction band 3 and the second friction band 4 are misaligned along the circumference of the sleeve 1.

[0035] The single-side thickness of the installation cavity 2 is a, and the thickness of the first friction band 3 and the second friction band 4 is b, so 2b>a>b; that is, when the first friction band 3 and the second friction band 4 are in an overlapping state, the inner and outer sleeves 1 form an interference fit, and when the first friction band 3 and the second friction band 4 are in a misaligned state, the inner and outer sleeves 1 form a clearance fit.

[0036] The number of the first friction bands 3 is two and they are symmetrically distributed on the two sides of the inner wall of the sleeve 1, and the number of the second friction bands 4 is two and they are symmetrically distributed on the two sides of the outer wall of the sleeve 1.

[0037] The first friction band 3 and the second friction band 4 form an installation gap; the bottom of the sleeve 1 is provided with two symmetric elastic parts 5, and the elastic part 5 is provided with a protrusion 6 located in the installation gap.

[0038] The two sides of the elastic part 5 are separated from the sleeve 1 by a U-shaped groove, so that the elastic part 5 has the functions of stress deformation and springback; that is, the elastic part 5 can deform inwardly after being extruded by the first friction band 3, and spring back to the original position after entering the installation gap.

[0039] The installation gap is divided into a first installation gap 7 and a second installation gap 8, the first installation gap 7 and the second installation gap 8 are respectively located on the left and right sides of the first friction belt 3, the second installation gap 8 is provided with clamping teeth 9 equidistantly arranged on the inner wall of the sleeve 1 along the length direction of the sleeve 1, the outer end of the protruding block 6 forms a clamping buckle matched with the clamping teeth 9, the clamping buckle and the clamping teeth are used to limit the axial position of the sleeve 1 after being buckled with each other; the two sides of the protruding block 6 are provided with arc surfaces matched with the first friction belt 3, so that the sleeve 1 can be pressed radially inward by the first friction belt 3 when rotating, and then the protruding block 6 is driven to shrink to the radially inner side of the first friction belt 3.

[0040] Further comprising a third friction belt 10, the third friction belt 10 is located on the top of the inner wall of the sleeve 1 outside the installation cavity 2 and completely covers the installation gap in the circumferential direction, the thickness of the third friction belt 10 is the single-side thickness of the installation cavity 2; the third friction belt 10 and the clamping teeth 9 are arranged side by side in the length direction of the sleeve 1.

[0041] The first friction belt 3, the second friction belt 4 and the third friction belt 10 are all abrasive layers coated on the outer wall or the inner wall of the sleeve 1.

[0042] The top of part of the sleeve 1 is provided with a retaining ring, which can prevent the sleeve 1 on the radially inner side from being pulled out from below after the two sleeves 1 are nested with each other.

[0043] The top of the sleeve 1 on the radially innermost side is provided with a threaded head 11 for connecting an operating joint.

[0044] Compared with example 1, the clamping teeth arranged in the second installation gap 8 and the clamping buckle arranged on the protruding block 6 are used to limit the axial position of the sleeve 1 after the sleeve 1 is extended to the designated position, so that the elastic part 5 can be buckled into the clamping teeth 9 in the second installation gap 8 by rotating the sleeve 1, and then the sleeve 1 is prevented from shrinking under stress, thereby improving the stability of the sleeve 1 when performing the pushing action.

[0045] Example 4: A method for using a length-adjustable operating handle, which uses the length-adjustable operating handle of example 3 to operate, and specifically includes the following steps: ①The sleeve 1 on the radially inner side is pulled out to the designated length, and the first friction belt 3 and the second friction belt 4 are in a mutually staggered state in the circumferential direction when the sleeve 1 is pulled out, and the elastic part 5 of the inner sleeve 1 is located in the first installation gap 7; ②Rotating the inner sleeve 1 to make the first friction band 3 and the second friction band 4 overlap each other, and using the friction force of the first friction band 3 and the second friction band 4 after overlapping to form friction limit for the two adjacent sleeves, at the same time, the elastic part 5 of the inner sleeve 1 rotates from the first installation gap 7 to the second installation gap 8 and is buckled with the clamping teeth 9, so as to use the cooperation of the clamping teeth 9 and the protrusion 6 to limit the axial position of the inner sleeve 1; ③According to the mode of steps ① and ②, sequentially extract each sleeve to the specified length and rotate and fix; ④Threadedly connecting the operating connector of the electrical equipment to the threaded head 11 at the end of the sleeve, and then holding the sleeve to stretch the operating connector into the inside of the equipment to press, push and pull or rotate.

[0046] Embodiment 5. An adjustable length operating handle, which is composed of Figure 5 and 9 As shown in the figure, on the basis of embodiment 3, the middle part of the clamping buckle is buckled and connected with the clamping teeth 9 through the buckle plate, and the space for the protrusion 6 and the buckle plate to enter is left between the adjacent clamping teeth 9.

[0047] Compared with embodiment 3, the clamping buckle and the clamping teeth 9 are buckled with each other in this embodiment, so that the clamping teeth 9 can form circumferential rotation limit for the sleeve 1, and when the operator controls the handle to rotate around the axis of the sleeve 1, the operator only needs to keep pressing during the rotation to keep the clamping buckle and the clamping teeth 9 in the buckled state, so that the relative rotation between the adjacent sleeves 1 is prevented, and the stability of the handle as a whole is ensured. When the handle needs to be retracted and reset, the operator will rotate the outer sleeve 1 to make the clamping buckle and the clamping teeth 9 unbuckled, so as to release the rotation limit of the sleeve 1, which is convenient for the operator to operate.

Claims

1. A length-adjustable operating grip, characterized in that: The device includes multiple sleeves (1) arranged in a nested manner, with an installation cavity (2) formed between adjacent sleeves (1). A limiting component is provided in the installation cavity (2). The limiting component is connected to two sleeves (1) respectively and is used to limit the friction between the two sleeves (1). The limiting component includes a first friction band (3) and a second friction band (4). The first friction band (3) is located on the inner wall of the sleeve (1) outside the installation cavity (2), and the second friction band (4) is located on the outer wall of the sleeve (1) inside the installation cavity (2). The first friction band (3) and the second friction band (4) are offset from each other along the circumference of the sleeve (1).

2. The adjustable length operating grip according to claim 1, characterized in that: Let the thickness of one side of the mounting cavity (2) be a, and the thickness of the first friction band (3) and the second friction band (4) be b. Then 2b > a > b.

3. The adjustable length operating grip according to claim 1, characterized in that: The number of the first friction bands (3) is two and they are symmetrically distributed on both sides of the inner wall of the sleeve (1), and the number of the second friction bands (4) is two and they are symmetrically distributed on both sides of the outer wall of the sleeve (1).

4. The adjustable length operating grip according to claim 3, characterized in that: An installation gap is formed between the first friction band (3) and the second friction band (4); the bottom of the sleeve (1) is provided with two symmetrical elastic parts (5), and the elastic parts (5) are provided with protrusions (6) located in the installation gap.

5. The adjustable length operating grip according to claim 4, characterized in that: The installation gap is divided into a first installation gap (7) and a second installation gap (8). The first installation gap (7) and the second installation gap (8) are located on the left and right sides of the first friction strip (3), respectively. The second installation gap (8) is provided with snap-fit ​​teeth (9) that are evenly spaced along the length of the sleeve (1) on the inner wall of the sleeve (1). The outer end of the protrusion (6) forms a snap-fit ​​buckle that matches the snap-fit ​​teeth (9).

6. The adjustable length operating grip according to claim 1, characterized in that: It also includes a third friction band (10), which is located on the top of the inner wall of the sleeve (1) outside the mounting cavity (2) and completely covers the mounting gap circumferentially.

7. The adjustable length operating grip according to claim 1, characterized in that: The first friction strip (3), the second friction strip (4) and the third friction strip (10) are all adhesive tapes that adhere to the outer or inner wall of the sleeve (1), and the surface of the adhesive tapes forms a rough surface.

8. The adjustable length operating grip according to claim 1, characterized in that: The first friction band (3), the second friction band (4) and the third friction band (10) are all abrasive layers coated on the outer or inner wall surface of the sleeve (1).

9. The adjustable length operating grip according to claim 1, characterized in that: The top of the sleeve (1) located on the innermost radial side is provided with a threaded head (11) for connecting the operating connector.

10. A method of using an adjustable-length operating grip according to any one of claims 1-9, characterized in that, Includes the following steps: ① Pull the sleeve located on the radial inner side outward to the specified length, and when the sleeve is pulled out, the first friction band and the second friction band are in a state of mutual misalignment along the circumference; ② Rotate the sleeve to make the first friction band and the second friction band overlap each other, and use the friction force of the first friction band and the second friction band after overlap to make the two adjacent sleeves form a friction limit. ③ Following steps ① and ②, pull out each sleeve to the specified length and rotate it to fix it; ④ Install the operating connector of the electrical equipment at the end of the sleeve, and then hold the sleeve to insert the operating connector into the inside of the equipment for operation.

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