Manual broaching machine

Abstract

The utility model discloses a manual broaching machine which comprises a base, a movable supporting part, a first back frame, a second back frame and a seat frame, the bottom of the first back frame is hinged to the rear side of the base, the top of the first back frame is hinged to the first end, close to the first back frame, of the second back frame, and the second end, close to the seat frame, of the second back frame is hinged to the third end of the seat frame; first sliding rails in the horizontal direction are arranged on the left side and the right side of the base correspondingly. Sliding blocks of first sliding rails are fixed at the left and right ends of one end, close to the base, of the movable supporting part; second sliding rails in the horizontal direction are arranged on the left side and the right side of the movable supporting part respectively, connecting parts extend downwards from the two ends of the third end of the seat frame respectively, and sliding blocks of the second sliding rails are fixed to the connecting parts; the seat frame is supported by a first supporting rod, and a pulley making contact with the ground is arranged at the bottom of the first supporting rod. According to the utility model, the form can be switched without lifting the frame, which is convenient and labor-saving.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of puller, sofa bed, and particularly relates to a manual puller. BACKGROUND

[0002] The sofa bed can be converted between a sofa (or a seat) and a bed, is popular, can improve the use value on the one hand, and can also reduce the occupied space of furniture on the other hand. The existing patent 202322608383.8 discloses a lifting bed frame, wherein when the sofa is switched to the bed, the seat frame one and the seat frame two are pulled out from the base, then the back frame is folded, the back frame falls into the lock ear, in the process of unfolding the seat frame one and the seat frame two, the supporting leg one and the supporting leg two are unfolded under the traction of the folding arm one and the folding arm two, and the sofa is switched to the bed. However, the sofa bed needs to pull the seat frame one and the seat frame two first, and then put them down after unfolding in the air, so the operation is relatively laborious. SUMMARY

[0003] The utility model solves the technical problem that the utility model provides a manual puller, which can switch the form without lifting the frame, is convenient and saves labor.

[0004] In order to solve the above technical problems, the utility model discloses a manual puller, which comprises a base in contact with the ground, a movable support part, a first back frame, a second back frame and a seat frame.

[0005] The bottom of the first back frame is hinged to the rear side of the base, the top of the first back frame is hinged to the first end of the second back frame close to the first back frame, and the second end of the second back frame close to the seat frame is hinged to the third end of the seat frame.

[0006] The base is provided with first sliding rails in the horizontal direction on the left and right sides respectively; one end of the movable support part close to the base is fixed with sliding blocks of the first sliding rails on the left and right sides respectively, so that the movable support part can move in the direction of the first sliding rails;

[0007] The movable support part is provided with second sliding rails in the horizontal direction on the left and right sides respectively, the third end of the seat frame extends downward on both sides respectively to form a connecting part, and the connecting part is fixed with sliding blocks of the second sliding rails, so that the seat frame can move in the direction of the second sliding rails;

[0008] The seat frame is supported by a first supporting rod, and the bottom of the first supporting rod is provided with a sliding wheel in contact with the ground.

[0009] As an optional implementation, the movable support part is supported by a second supporting rod, and the bottom of the second supporting rod is provided with a sliding wheel in contact with the ground.

[0010] As a further alternative embodiment, a boost piece is mounted on the bottom of the second end of the second back frame, the boost piece extends towards the seat frame, and a surface of the extended part of the boost piece is provided with a through hole; the seat frame is hingedly fixed with a boost block, and the hinge of the boost block on the seat frame is closer to the third end of the seat frame than the projection of the through hole on the seat frame.

[0011] As a further alternative embodiment, a limit protrusion is arranged on the middle part of the boost block.

[0012] As a further alternative embodiment, the first back frame, the second back frame and the seat frame are rectangular frames, and a plurality of reinforcing rods are arranged on the middle parts of the frames and connect two ends.

[0013] As a further alternative embodiment, the top of the first back frame and the first end of the second back frame are both rounded.

[0014] As a further alternative embodiment, a first hinge piece is fixed on the second end of the second back frame, and a second hinge piece is fixed on the third end of the seat frame, the first hinge piece is a panel bent towards the seat frame, the second hinge piece is a panel bent towards the second back frame, and the bent part of the first hinge piece is hingedly connected with the bent part of the second hinge piece.

[0015] As a further alternative embodiment, the first back frame is covered with a mesh structure.

[0016] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0017] The first sliding rail of the base and the second sliding rail of the movable support part are linked to make the seat frame and the movable support part horizontally translatable, which can adjust the position without lifting the frame, significantly reduces the operation difficulty, and improves the use convenience and labor saving. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a structural schematic diagram of a sofa mode (or a seat mode) of a manual broaching machine disclosed by the embodiments of the present application;

[0020] Figure 2 is a structural schematic diagram of a bed mode of a manual broaching machine disclosed by the embodiments of the present application;

[0021] Figure 3 The utility model discloses an embodiment discloses Figure 2 Partial enlarged view of part A in figure 1;

[0022] Figure 4 The utility model discloses an embodiment discloses a part structure schematic diagram of manual broaching machine. DETAILED DESCRIPTION

[0023] In order to make the personnel in the technical field better understand the utility model scheme, below will combine the drawings in the embodiment of the utility model, and the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment only is a part embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtains without making the creative labor all belong to the range of the utility model protection.

[0024] Referring to Figures 1 to 4 The utility model discloses an embodiment discloses a manual broaching machine, including the base 1 of bottom and ground contact, movable support part 2, first back frame 3, second back frame 4 and sit frame 5;

[0025] The bottom of first back frame 3 is hinged to the rear side of base 1, and the top of first back frame 3 is hinged to the first end of second back frame 4 close to first back frame 3, and the second end of second back frame 4 close to sit frame 5 is hinged to the third end of sit frame 5;

[0026] The base 1 is respectively equipped with the horizontal direction's first sliding rail 11 on left and right sides;The end close to the base 1 of movable support part 2 is respectively fixed with the sliding block 21 of first sliding rail 11 on left and right ends, to make movable support part 2 can move along the direction of first sliding rail 11;

[0027] Movable support part 2 is respectively equipped with the horizontal direction's second sliding rail 22 on left and right sides, and the third end of sit frame 5 extends a connecting part 51 downward at both ends, and the sliding block 511 of second sliding rail 22 is fixed on the connecting part 51, so that the sit frame 5 can move along the direction of second sliding rail 22;

[0028] The sit frame 5 is supported by the first support rod 6, and the bottom of the first support rod 6 is provided with a ground-contacting pulley 61.

[0029] The utility model passes through the first sliding rail 11 of base 1 and the second sliding rail 22 of movable support part 2 linkage, makes sit frame 5 with movable support part 2 can translate along the horizontal direction, this design does not need to lift the frame and can adjust position, significantly reduces the operation difficulty, and promotes the use convenience and labor-saving.

[0030] In an alternative embodiment, the active support part 2 is supported by a second support rod 7, the bottom of which is provided with a ground-contacting pulley 71.

[0031] In yet another alternative embodiment, the bottom of the second end of the second back frame 4 is provided with a boost piece 41, which extends towards the seat frame 5, the surface of the extended part of which is provided with a through hole 411; the seat frame 5 is hingedly fixed with a boost block 52, the hinge of which on the seat frame 5 is closer to the third end of the seat frame 5 than the projection of the through hole 411 on the seat frame 5.

[0032] In this embodiment, in the bed mode, the boost block 52 abutting against the boost piece 41 can fix the position of the seat frame 5; after lifting the seat frame 5, the boost block 52 is automatically suspended and accurately aligned with the through hole 411 due to gravity. This linkage mechanism realizes the quick switching mode of "one lifting and one placing" (such as from a seat to a bed), simplifies the operation steps, and reduces the time and physical consumption of manual adjustment of the user.

[0033] In yet another alternative embodiment, the middle part of the boost block 52 is provided with a limiting protrusion 521.

[0034] In this embodiment, the limiting protrusion 521 is used to limit the distance between the through hole 411 and the seat frame 5 after the boost block 52 is inserted into the through hole 411, to control the included angle between the boost block 52 and the seat frame 5, and to facilitate force application. The limiting protrusion 521 can control the depth of the boost block 52 after being inserted into the through hole 411 and the angle with the seat frame 5. This design avoids the difficulty of operation caused by excessive insertion or angle deviation, ensures the stability and reliability of the fixed structure, and reduces the need for repeated adjustment due to inaccurate positioning.

[0035] In yet another alternative embodiment, the first back frame 3, the second back frame 4 and the seat frame 5 are rectangular frames, each of which is provided with a plurality of reinforcing rods 8 connected between two ends. The addition of the reinforcing rods 8 connected between two ends in the middle part of the back frame and the seat frame 5 significantly improves the bending resistance and structural rigidity of the overall frame, which can avoid deformation of the frame even under long-term use or under a large load (such as multiple people using), thereby prolonging the service life of the product.

[0036] In yet another alternative embodiment, the top of the first back frame 3 and the first end of the second back frame 4 are both provided with rounded corners. The rounded corners eliminate the potential risk of collision of sharp corners, thereby improving safety and comfort. Especially during adjustment or folding, the rounded corners can reduce the possibility of clothes, skin, etc. being scratched.

[0037] In yet another optional embodiment, a first hinge 42 is fixed on the second end of the second back frame 4, a second hinge 53 is fixed on the third end of the seat frame 5, the first hinge 42 is a panel bent towards the seat frame 5, the second hinge 53 is a panel bent towards the second back frame 4, and the bending part of the first hinge 42 is hinged with the bending part of the second hinge 53. The bending structure of the hinged panel enlarges the contact area of the connection and optimizes the space compatibility during folding / unfolding. This design allows the back frame and the seat frame 5 to move smoothly in limited space, while reducing the jamming or wear problems that may be caused by the right-angle hinge.

[0038] In yet another optional embodiment, the first back frame 3 is covered with a mesh structure 31. The mesh structure 31 maintains good air permeability (suitable for long-term use) and reduces the overall weight, facilitating transportation.

[0039] The content disclosed by the embodiments of the utility model only serves as the preferred embodiments of the utility model, and is used for describing the technical solutions of the utility model, rather than limiting the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently. The modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A hand operated broaching machine characterized by, The base is in contact with the ground, the movable support, the first back frame, the second back frame and the seat frame; The bottom of the first back frame is hinged to the back side of the base, the top of the first back frame is hinged to the first end of the second back frame close to the first back frame, and the second end of the second back frame close to the seat frame is hinged to the third end of the seat frame; The base is provided with first horizontal slide rails on the left and right sides respectively; one end of the movable support close to the base is fixed with slide blocks of the first slide rails at the left and right ends respectively, so that the movable support can move along the direction of the first slide rails; The movable support is provided with second horizontal slide rails on the left and right sides respectively, and the third end of the seat frame extends downward at both ends to form a connecting part, and the connecting part is fixed with slide blocks of the second slide rails, so that the seat frame can move along the direction of the second slide rails; The seat frame is supported by a first support rod, and the bottom of the first support rod is provided with a ground-contacting pulley.

2. The manual broaching machine of claim 1, wherein, The movable support is supported by a second support rod, and the bottom of the second support rod is provided with a ground-contacting pulley.

3. The manual broaching machine of claim 1, wherein, The second end of the second back frame is provided with a boost piece, the boost piece extends towards the seat frame, and the surface of the extension part is provided with a through hole; the seat frame is fixed with a boost block by hinging, and the hinge of the boost block on the seat frame is closer to the third end of the seat frame than the projection of the through hole on the seat frame.

4. The manual broaching machine of claim 3, wherein, The middle part of the boost block is provided with a limiting protrusion.

5. The manual broaching machine of claim 1, wherein, The first back frame, the second back frame and the seat frame are rectangular frames, and the middle parts are provided with a plurality of reinforcing rods connected between both ends.

6. The manual broaching machine of claim 1, wherein, The top of the first back frame and the first end of the second back frame are both rounded.

7. The manual broaching machine of claim 1, wherein, The second end of the second back frame is fixed with a first hinge piece, and the third end of the seat frame is fixed with a second hinge piece, the first hinge piece is a panel bent towards the seat frame, the second hinge piece is a panel bent towards the second back frame, and the bent part of the first hinge piece is hinged to the bent part of the second hinge piece.

8. The manual broaching machine of claim 1, wherein, The first back frame is covered with a mesh structure.

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