Limitable rotary front and rear handle combination

Abstract

The invention discloses a rotary front and rear handle combination capable of limiting, which comprises a front handle, a base piece, a rear handle combination and a limiting and fixing rib plate, and is characterized in that the base piece is provided with at least one front end connecting part and a rear cavity end part, and the rear cavity end part comprises an inner cavity and an outer edge part; the front handle is connected with the base piece through the front end connecting part; the rear handle combination is provided with a rotating end part, and the rotating end part can be connected with the inner cavity of the end part of the rear cavity of the base part along the axis direction Xz; the limiting and fixing rib plate and the outer edge part of the end part of the rear cavity of the base part form a matched connection relationship; the rear handle assembly is simple in structure, novel in construction and convenient to use, the rear handle assembly can be rotationally adjusted in the left direction, the middle direction and the right direction, and then the use requirements of operation tools at different angles are met.

Description

Technical Field

[0001] The invention relates to the field of handheld hedge trimmers, and in particular to a limitable rotatable front and rear handle combination. Background Art

[0002] As a special tool product for gardening operations, hedge trimmers are used to trim hedges, branches, shrubs, etc. For large-area pruning operations, in order to improve work efficiency and reduce labor intensity, handheld hedge trimmers driven by gasoline engines or electric motors are currently commonly used for pruning operations.

[0003] In order to trim hedges, shrubs and other vegetation into the desired aesthetic appearance, when trimming the sides of the hedges, if the front and rear handles of the handheld tools are fixed, the operator can only work by tilting the body or bending the arms, which increases the operator's work intensity and increases the risk factor of the operation. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a limitable rotatable front and rear handle combination, which has the advantages of simple structure, convenient use, and meeting the operator's use requirements at different angles.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A limitable rotation front and rear handle combination, comprising a front handle, a base member, a rear handle combination, and a limit fixing rib plate, characterized in that: the base member is provided with at least one front end connection portion and a rear cavity end portion, the rear cavity end portion includes an inner cavity extending along the Xz direction and an outer edge portion extending along the Xv direction, at least 3 rotation limit grooves are evenly distributed at the end portion of the inner cavity along the Xz direction and a flange portion is provided); the front handle is connected to the base member through the front end connection portion; the rear handle combination is provided with a rotation end portion, which can be connected to the inner cavity of the rear cavity end portion of the base member along the axial direction Xz; the limit fixing rib plate forms a mating connection relationship with the outer edge portion of the rear cavity end portion of the base member; the limit fixing rib plate is characterized in that: it includes at least one axial limit rib and a radial limit rib, and the setting directions of the axial limit rib and the radial limit rib are perpendicular to or intersecting with the axial direction Xz of the rotation end portion in the above-mentioned rear handle combination.

[0006] In this way, the front handle, the rear handle assembly and the limiting and fixing rib are connected as a combined component through the front end connecting part and the rear cavity end provided on the base member, thereby realizing the structure of the front and rear handle assembly; the rotating end provided in the rear handle assembly can be connected with the inner cavity of the rear cavity end of the base member along the axial direction Xz, realizing the function of the rear handle assembly to rotate in the inner cavity; the axial limiting ribs and radial limiting ribs provided on the limiting and fixing rib realize the function of axial displacement limiting and radial rotation guiding of the rear handle assembly through the connection structure of the limiting and fixing rib and the base member.

[0007] As a preferred solution of the present invention, the base member includes a protective portion and at least one bridging portion, and the protective portion, the front connecting portion, and the end of the rear cavity are connected by the bridging portion to form the base member.

[0008] In this way, the protection part, the front connecting part and the rear cavity end are combined into a whole through the bridging part, thereby forming a base member.

[0009] As a preferred solution of the present invention, the front handle is provided with at least one connecting portion, and the connecting portion is connected to the front end connecting portion to achieve connection with the base member.

[0010] Such an arrangement ensures the tightness of the connection between the front handle and the base member.

[0011] As a preferred solution of the present invention, the rotating end of the rear handle assembly includes an outer periphery extending along the Xz direction and an axial sliding groove, an axial limit groove and a radial limit block formed along the circumferential direction of the outer periphery, and a rotating limit block is provided.

[0012] In this way, by matching the outer peripheral portion arranged in the rotating end of the rear handlebar assembly with the inner chamber in the rear cavity end of the base member, the rotation function of the rear handlebar assembly can be realized due to the axial hole matching connection relationship; the axial sliding groove arranged in the rotating end of the rear handlebar assembly can slide axially along the direction of the flange portion in the inner chamber, and when the axial limiting groove of the outer peripheral portion coincides or coincides with the flange portion, the rear handlebar assembly can be limitedly rotated to any angle, thereby realizing the axial limiting function of the rear handlebar assembly; after the rear handlebar assembly is axially limited, the rear handlebar assembly is rotated left and right, and the left polar surface and the right polar surface of the rotation limiting block in the rear handlebar assembly will respectively contact the left end surface and the right end surface of the radial limiting rib in the limiting fixing plate, thereby realizing the left and right rotation limiting function of the rear handlebar assembly.

[0013] As a preferred solution of the present invention, the front handle is in an inverted U shape or an arc shape.

[0014] With such arrangement, after the rear handle assembly is rotated to a limited position, the front handle designed in this shape can also be gripped to adapt to the operation according to the rotation angle of the rear handle assembly.

[0015] As a preferred solution of the present invention, the rear handle assembly includes a left handle and a right handle formed by left and right divisions, an acceleration handle, a safety control handle, a rotation control handle, a switch assembly, a compression spring, and a rotation torsion spring.

[0016] In this way, the components constitute the main body of the rear handlebar assembly.

[0017] As a preferred solution of the present invention, the rotation limit block is matched and connected with the rotation limit grooves evenly distributed at the end of the inner chamber.

[0018] With such arrangement, as the rear handle assembly rotates, the rotation limit block can be inserted into or engaged with the rotation limit grooves evenly distributed at the end of the inner chamber, and this connection and engagement thereby realizes the rotation limit of the rear handle assembly.

[0019] As a preferred solution of the present invention, the rotation limit block is attached to the rotation control handle and constitutes a part of the rotation control handle.

[0020] In this arrangement, since the rotation limit block is attached to the rotation control handle, the rotation operation of the rear handle assembly can be controlled by the rotation control handle. When the operator pulls the rotation control handle, the position of the rotation limit block in the rotation limit groove can be controlled, thereby achieving arbitrary angle control adjustment of the left, middle and right positions.

[0021] As a preferred solution of the present invention, the rotating end of the rear handle assembly is a partial structure of the combined structure of the left and right handles, that is, the rotating end can be attached to the combined structure of the left and right handles.

[0022] With such arrangement, the composition of the rotating end portion can be attached to the combined structure of the left and right handlebars, thereby realizing the attached connection between the rear handlebar assembly and the rotating end.

[0023] The beneficial effects are: the present invention has a simple structure, a novel construction, and is easy to use, and can realize rotation adjustment of the rear handle combination in three directions: left, middle, and right, thereby meeting the operator's use requirements at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiment and its description are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the front handle component of the present invention; Figure 3 is a schematic structural diagram of the base member components of the present invention; Figure 4 is a transverse cross-sectional view of the end of the rear cavity of the base member of the present invention; Figure 5 is a structural schematic diagram of the rear handlebar assembly of the present invention; Figure 6 is a schematic structural diagram of the rotating end portion of the rear handlebar assembly of the present invention; Figure 7 is a transverse cross-sectional view of the rear handlebar assembly of the present invention; Figure 8 It is a structural schematic diagram of the position-limiting and fixing rib plate of the present invention.

[0026] Description of the serial numbers in the attached drawings: 1. Front and rear handlebar assembly; 2. Front handlebar; 3. Base member; 4. Rear handlebar assembly; 7. Position-limiting fixing rib plate; 21. Connecting portion; 31. Front connecting portion; 32. Rear cavity end; 33. Inner cavity; 34. Outer edge portion; 35. Flange portion; 36. Rotational position-limiting groove; 37. Bridging portion; 38. Protective portion; 40. Rotational end; 41. Peripheral portion; 42. Axial sliding groove; 43. Axial position-limiting groove; 44. Radial position-limiting block; 45. Switch assembly; 46. Left handlebar; 47. Right handlebar; 48. Safety control handle; 49. Acceleration handle; 50. Rotational control handle; 51. Rotational position-limiting block; 52. Guide shaft; 61. Compression spring; 62. Rotational torsion spring; 71. Axial position-limiting rib; 72. Radial position-limiting rib; 73. Right end surface; 74. Left end surface; 75. Right polar surface; 76. Left polar surface. DETAILED DESCRIPTION

[0027] It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back, inside, outside", etc., are based on the viewing orientations shown in the corresponding drawings of the specification. Their purpose is only to facilitate those skilled in the art to better understand the technical solution of the present invention, and they should not be and should not be regarded as limiting the scope of protection or technical solution of the present invention.

[0028] It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "assembly", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the invention can be understood according to the specific circumstances.

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] like Figure 1 As shown, a limitable rotatable front and rear handlebar assembly 1 is mainly composed of a front handlebar 2, a base member 3, a rear handlebar assembly 4, and a limit fixing rib plate 7 that are connected together.

[0031] like Figure 2 , Figure 3 As shown, the front handlebar 2 is in an inverted U-shape or an arc shape and is formed by vacuum blow molding of synthetic resin. The component is provided with at least one connecting portion 21, which is characterized in that: the connecting portion 21 of the front handlebar 2 is provided with a threaded hole, and the front end connecting portion 31 of the front end of the base member 3 is connected to the connecting portion 21 of the front handlebar 2 by screw fastening.

[0032] The base member 3 is provided with at least one front end connecting portion 31 and a rear cavity end portion 32, and also includes a protective portion 38 and at least one bridging portion 37, and is characterized in that: the protective portion 38, the front end connecting portion 31, and the rear cavity end portion 32 are connected by the bridging portion 37 to form the base member 3, that is, the above components can be made into an integral composite component by a synthetic resin molding method.

[0033] like Figure 4 As shown, the rear cavity end 32 attached to the base member 3 includes an inner cavity 33 extending along the Xz direction and an outer edge portion 34 extending along the Xv direction. At least three rotation limit grooves 36 are evenly distributed at the end of the inner cavity 33 along the Xz direction and a flange portion 35 is provided. It is characterized in that: the inner chamber 33 extends a certain length along the Xz direction to form a cylindrical chamber, which can accommodate the rotating end 40 of the rear handlebar assembly 4; the outer edge portion 34 extending along the Xv direction is the outer wall thickness portion of the inner chamber 33. On the one hand, it can better fasten and hold the rotating end 40 of the rear handlebar assembly 4 to enhance the holding strength of the inner chamber 33; on the other hand, it can form a matching relationship with the limiting and fixing rib plate 7; the axial limiting rib 71 arranged on the limiting and fixing rib plate 7 can limit or maintain the axial position of the rear handlebar assembly 4 in the Xz direction; the radial limiting rib 72 arranged on the limiting and fixing rib plate 7 can limit or maintain the radial rotation of the rear handlebar assembly 4 in the circumferential direction; the three-dimensional spatial freedom of the rear handlebar assembly 4 is limited by the axial limiting rib 71 and the radial limiting rib 72, and only a certain angle of rotational freedom is maintained, thereby realizing the rotation function of the rear handlebar assembly.

[0034] At least three rotation limit grooves 36 are evenly distributed at the end of the inner chamber 33. The rotation limit grooves 36 can limit the rotation angle of the rear handlebar assembly 4 so that it can be kept in a certain rotation posture and kept limited and fixed; a flange portion 35 is provided in the inner chamber 33. When the rear handlebar assembly 4 axially penetrates into the inner chamber 33 along the Xz direction, the flange portion 35 cooperates with the axial limit groove 43 of the rear handlebar assembly 4, which can prevent the rear handlebar assembly 4 from axial movement and limit the position.

[0035] like Figure 5 , Figure 6 , Figure 7 As shown, the rotating end 40 of the rear handlebar assembly 4 includes an outer peripheral portion 41 and an axial sliding groove 42 extending along the Xz direction, an axial limit groove 43 and a radial limit block 44 formed along the circumferential direction of the outer peripheral portion 41, and a rotating limit block 51 is provided.

[0036] The rear handle assembly 4 includes a left handle 46 and a right handle 47 which are divided into left and right parts, an acceleration handle 49, a safety control handle 48, a rotation control handle 50, a switch assembly 45, a compression spring 61, and a rotation torsion spring 62.

[0037] The rotating end portion 40 of the rear handle assembly 4 is a partial structure of the combined structure of the left handle 46 and the right handle 47 , that is, the rotating end portion 40 can be attached to the combined structure of the left handle 46 and the right handle 47 .

[0038] The rotation limit block 51 is attached to the rotation control handle 50 and constitutes a part of the rotation control handle 50 .

[0039] The rotation limiting block 51 is matched and connected with the rotation limiting grooves 36 evenly distributed at the end of the inner chamber 33 .

[0040] Specifically, the rotating end 40 of the rear handlebar assembly 4 and the rear cavity end 32 of the base member 3 are in an axial-hole matching relationship in the Xz direction. In this way, structurally, the outer peripheral portion 41 of the rotating end 40 of the rear handlebar assembly 4 is understood as an axial portion, and the inner chamber 33 of the rear cavity end 32 of the base member 3 is understood as a hole cavity, thereby realizing a rotatable axial-hole matching relationship, and then being connected to the base member 3 as a whole.

[0041] Specifically, the combination of the left handle 46 and the right handle 47 forms a one-hand grip structure, which is convenient for the user to hold and operate. Preferably, the acceleration handle 49, the safety control handle 48, the rotation control handle 50, the switch combination 45, the compression spring 61, and the rotation torsion spring 62 are arranged in the internal space formed by the left and right handles to control the function realization of the corresponding units.

[0042] Preferably, the rotating torsion spring 62 can connect the acceleration handle 49 and the safety control handle 48 in a linkage manner. In the natural assembly, under the action of the torque of the rotating torsion spring 62, the safety control handle 48 and the acceleration handle 49 are in a stressed state. At this time, the acceleration handle 49 cannot work by itself. In order to play a role of safety control constraint, it is necessary to press the safety control handle 48 first, which can put the acceleration handle 49 in a working state, thereby playing the function of accelerating the control power unit.

[0043] Preferably, the switch assembly 45 is used to control the switch function of the power unit, and can stop the power unit after being pressed.

[0044] Preferably, the compression spring 61 is installed on the guide shaft 52 of the rotation control handle 50. Under natural assembly, the rotation control handle 50 is subjected to force by compressing the compression spring 61 by a certain stroke. The user can pull the rotation control handle 50 in the axial direction Xz, so that the rotation limit block 50 is in an axially telescopic state.

[0045] When the user pulls the rotation control handle 50 to a certain displacement, the corresponding rotation limit block 51 can be disengaged from the rotation limit groove 36 of the corresponding inner chamber 33. At this time, by holding the handle and rotating the rear handle assembly 4, the rear handle assembly 4 can rotate freely, and the limited rotation in at least three angular directions of left, middle and right can be achieved.

[0046] It should be noted that the rear handle assembly 4 is installed in the inner chamber 33 in the following manner: when the rear handle assembly 4 is assembled, the axial sliding groove 42 of the rotating end 40 of the rear handle assembly 4 can be aligned with the flange portion 35 of the inner chamber 33, and then the outer peripheral portion 41 attached to the rotating end 40 is inserted into the inner chamber 33. When the inner penetration position reaches the point where the flange portion 35 coincides with the axial limiting groove 43, the rear handle assembly 4 is rotated 180° to the left or right. At this time, the position of the outer peripheral portion 41 of the rear handle assembly 4 is limited in the axial direction by the cooperation between the axial limiting groove 43 and the flange portion 35.

[0047] like Figure 8 As shown, the limiting fixing rib plate 7 includes at least an axial limiting rib 71 and a radial limiting rib 72, and the setting directions of the axial limiting rib 71 and the radial limiting rib 72 are perpendicular to or intersecting with the axial direction Xz of the rotating end 40 in the above-mentioned rear handlebar assembly 4.

[0048] Specifically, after the rear handlebar assembly 4 and the limiting and fixing rib plate 7 are installed on the base member 3 according to the above instructions, the user can pull the rotation control handle 50 to disengage the rotation limiting block 51 from the rotation limiting groove 36. After the rear handlebar assembly 4 is rotated to the left by a certain angle, the left polar surface 76 of the radial limiting block 44 located at the rotating end 40 is in contact with the left end surface 74 of the radial limiting rib 72 of the limiting and fixing rib plate 7, thereby playing the role of limiting the left rotation. Similarly, when the rear handlebar assembly 4 is rotated to the right, it plays the role of limiting the right rotation.

[0049] Preferably, the axial limiting rib 71 provided on the limiting fixing rib plate 7 is matched and connected with the axial limiting groove 43 of the rotating end portion 40, thereby further playing the role of rotational guiding and axial limiting.

[0050] The above drawings and descriptions only represent preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A limitable rotatable front and rear handle assembly, comprising a front handle (2), a base member (3), a rear handle assembly (4), and a limit fixing rib (7), characterized in that: The base member (3) is provided with at least one front connecting portion (31) and a rear cavity end portion (32), the rear cavity end portion (32) includes an inner cavity (33) extending along the Xz direction and an outer edge portion (34) extending along the Xv direction, at least three rotation limit grooves (36) are evenly distributed at the end of the inner cavity (33) along the Xz direction, and a flange portion (35) is provided; the front handle (2) is connected to the base member (3) through the front connecting portion (31); the rear handle assembly (4) is provided with a rotation end portion (40), and the rotation end portion ( 40) can be connected to the inner chamber (33) of the rear cavity end (32) of the base member (3) along the axial direction Xz; the limiting fixing rib plate (7) and the outer edge portion (34) of the rear cavity end (32) of the base member (3) form a matching connection relationship; the limiting fixing rib plate (7) is characterized in that: it at least includes an axial limiting rib (71) and a radial limiting rib (72), and the setting direction of the axial limiting rib (71) and the radial limiting rib (72) is perpendicular to or intersecting with the axial direction Xz of the rotating end (40) in the above-mentioned rear handlebar assembly (4).

2. The limitable rotatable front and rear handlebar assembly according to claim 1, characterized in that: The base member (3) comprises a protective portion (38) and at least one bridging portion (37); the protective portion (38), the front connecting portion (31), and the rear cavity end portion (32) are connected via the bridging portion (37) to form the base member (3).

3. The limitable rotatable front and rear handlebar assembly according to claim 1, characterized in that: The front handle (2) is provided with at least one connecting portion (21), and the connecting portion (21) forms a connecting relationship with the front end connecting portion (31) to achieve connection with the base member (3).

4. The limitable rotatable front and rear handlebar assembly according to claim 1, characterized in that: The rotating end portion (40) of the rear handlebar assembly (4) comprises an outer peripheral portion (41) and an axial sliding groove (42) extending along the Xz direction, an axial limiting groove (43) and a radial limiting block (44) formed along the circumferential direction of the outer peripheral portion (41), and a rotating limiting block (51) is provided.

5. The front handlebar (2) according to claim 3, characterized in that: The front handle (2) is in an inverted U shape or an arc shape.

6. The rear handle assembly (4) according to claim 4, characterized in that: The rear handle assembly (4) comprises a left handle (46) and a right handle (47) formed by left and right splitting, an acceleration handle (49), a safety control handle (48), a rotation control handle (50), a switch assembly (45), a compression spring (61), and a rotation torsion spring (62).

7. The rear handle assembly (4) according to claim 4, characterized in that: The rotation limiting block (51) is matched and connected with the rotation limiting grooves (36) evenly distributed at the end of the inner chamber (33).

8. The rear handle assembly (4) according to claim 4, characterized in that: The rotation limit block (51) is attached to the rotation control handle (50) and constitutes a part of the rotation control handle (50).

9. The rear handle assembly (4) according to claim 4, characterized in that: The rotating end portion (40) of the rear handle assembly (4) is a part of the combined structure of the left handle (46) and the right handle (47), that is, the rotating end portion (40) can be attached to the combined structure of the left handle (46) and the right handle (47).

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