Clutch mute automobile sunshade curtain

Abstract

The utility model provides a clutch mute automobile sunshade curtain which comprises a sunshade curtain rolling box, a sunshade curtain is wound on a rolling shaft in the sunshade curtain rolling box, a clutch mute assembly is arranged in a first support on one side of the sunshade curtain rolling box and connected with one end of the rolling shaft, and a second support is arranged on the other side of the sunshade curtain rolling box. When the sunshade curtain is pulled downwards for sunshade, the winding shaft is pulled to rotate clockwise, the winding shaft drives the sleeve cap to rotate through the spline structure, and when the sleeve cap rotates, the shifting teeth arranged on the inner wall of the sleeve cap shift the shifting tooth clamping groove in the second clutch seat clockwise to move axially, so that the sunshade curtain is pulled downwards to shade the sun. When the ratchet wheel rotates, the ratchet wheel rotates, so that the inclined teeth clamped between the second clutch seat and the first clutch seat are separated, the ratchet wheel does not rotate at the moment, sound generated between the ratchet wheel and the pawl is avoided, and the mute effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a clutch silent automobile sunshade. Background Art

[0002] In order to improve the comfort of rear passengers, cars will install sunshades in front of the front windshield and side rear windshield to block the sun. When traditional car sunshades are pulled, they will make some noise, which affects the rear passengers' driving experience. In particular, some car sunshades with ratchet and pawl limiting structures will make a "da da da"-like noise when the sunshades are pulled. Not only does the noise affect the rear passengers' driving experience, but also the long-term wear and tear of the ratchet and ratchet teeth will easily shorten the life of the ratchet structure, thereby shortening the service life of the car sunshade. Summary of the invention

[0003] In order to solve the above problems, the utility model proposes a clutch silent automobile sunshade to more accurately solve the above problems.

[0004] The utility model is realized by the following technical solutions:

[0005] The utility model proposes a clutch silent automobile sunshade, including a sunshade winding box, a winding shaft is provided inside the sunshade winding box, a sunshade is wound on the winding shaft, one end of the sunshade winding box is connected to a first support by bolts, and the other end of the sunshade winding box is connected to a second support by bolts, a clutch silent component is provided inside the first support and connected to one end of the winding shaft, a second support shaft is provided inside the second support and coaxially arranged with the winding shaft, a support sleeve is sleeved on the second support shaft, a spline groove is provided inside the winding shaft, a spline that matches the spline groove on the inner wall of the winding shaft is provided on the outer wall of the support sleeve, and the support sleeve is inserted into and matched with one end of the winding shaft through a spline structure, and the inner end of the second support shaft is connected to A torsion spring is connected, and the other end of the torsion spring is connected to a second support inner core, and the outer wall of the second support inner core is provided with a spline that cooperates with the spline groove of the inner wall of the winding shaft, and the interior of the first support is provided with a first support shaft that is coaxial with the winding shaft, and the clutch silent assembly includes a ratchet that is sleeved and transferred to the first support shaft, and the ratchet is connected to a sleeve cap through a clutch member, and the outer wall of the sleeve cap is provided with a spline that cooperates with the spline groove of the inner wall of the winding shaft, and the sleeve cap is inserted into one end of the winding shaft through a spline structure, and a pawl mounting opening is opened on one side of the front side of the first support, and a pawl is transferred at the pawl mounting opening through a pin rod member, and the inner end teeth of the pawl cooperate with the tooth groove of the ratchet, the inner end of the pawl is connected to a locking compression spring inside the first support, and the outer end of the pawl is connected to a pull handle

[0006] Furthermore, the clutch member includes a first clutch seat integrally formed on one side of the ratchet, and a second clutch seat sleeved on the first support shaft, the first clutch seat and the second clutch seat are close to each other on one side and are provided with matching helical teeth, the sleeve cap is sleeved on the outside of the clutch member, and the second clutch seat is provided with two shifting tooth grooves on one end away from the helical teeth, and the inner wall of the sleeve cap is provided with shifting teeth matching with the shifting tooth grooves.

[0007] Furthermore, a limiting ring groove is provided on the first support shaft at a position corresponding to the sleeve cap, and a special-shaped clamping ring is provided at the outer end of the sleeve cap, and the special-shaped clamping ring is clamped in the limiting ring groove, and the special-shaped clamping ring tightly presses the outer end of the sleeve cap.

[0008] Furthermore, the inner end of the first support shaft is a spline shaft portion, and the inner end of the first support shaft is connected to a buffer mechanism through a spline structure, the other end of the buffer mechanism is connected to the first support inner core, and the outer wall of the first support inner core is provided with a spline that cooperates with the spline groove of the inner wall of the winding shaft.

[0009] Furthermore, a lower support bar is fixed to the bottom edge of the sunshade, and a pair of support rods are connected to one side of the sunshade rolling box and the lower support bar. The support rods are symmetrically arranged "∑" folding rod frames or round guide rods on both sides.

[0010] Beneficial effects of the utility model:

[0011] When the sunshade is pulled downward to shade the sun, the winding shaft is pulled to rotate clockwise, and the winding shaft drives the sleeve cap to rotate through the spline structure. When the sleeve cap rotates, the shifting teeth arranged on the inner wall thereof shift the shifting tooth slot on the second clutch seat clockwise, thereby causing the helical teeth engaged between the second clutch seat and the first clutch seat to move axially and disengage. At this time, the ratchet wheel does not rotate, thereby avoiding the sound between the ratchet wheel and the pawl, thereby achieving a silent effect.

[0012] 1. In the process of pulling down the sunshade curtain, the support rods of the utility model are unfolded to support the sunshade curtain. When the sunshade curtain is retracted, the support rods are folded back again, and the support structure is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the first view of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a second view of the three-dimensional structure of the utility model;

[0015] Figure 3 It is an exploded schematic diagram of the clutch silent component in the utility model;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the second support in the utility model;

[0017] Figure 5 This is a schematic diagram of the installation of the clutch silent component in the utility model;

[0018] Figure 6 It is a partial disassembled schematic diagram of the clutch silent component in the utility model;

[0019] Figure 7 It is a first schematic diagram of a structural transformation example 1 of the utility model;

[0020] Figure 8 It is a second schematic diagram of structural transformation example 1 of the utility model;

[0021] Fig. 9 It is a schematic diagram of structural transformation example 2 of the utility model;

[0022] Fig.10 It is a schematic diagram of the guide ring sleeve of the utility model.

[0023] In the figure: 1. sunshade rolling box; 101. rolling shaft; 102. sunshade; 1021. lower support bar; 1022. support rod; 103. horizontal bar 103; 1031. guide ring sleeve 1031; 2. first support; 201. first support shaft; 2011. limit ring groove; 202. ratchet; 203. sleeve cap; 2031. shifting tooth; 2032. special-shaped clamping ring; 204. buffer mechanism; 2041, first support inner core; 205, ratchet; 2051, handle; 206, first clutch seat; 207, second clutch seat; 2071, shifting tooth slot; 208, frame-type tooth; 2081, guide column; 2082, cable; 3, second support; 301, second support shaft; 3011, second support inner core; 302, support sleeve; 303, torsion spring; 3031, sheath; 4, guide rod 4. DETAILED DESCRIPTION

[0024] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0025] Please refer to Figure 1-Figure 10The utility model proposes a clutch silent automobile sunshade, including a sunshade winding box 1, a winding shaft 101 is provided inside the sunshade winding box 1, a sunshade 102 is wound on the winding shaft 101, one end of the sunshade winding box 1 is connected to a first support 2 by bolts, and the other end of the sunshade winding box 1 is connected to a second support 3 by bolts or rivets, a clutch silent component is provided inside the first support 2 and connected to one end of the winding shaft 101, a second support shaft 301 is provided inside the second support 3 and is coaxially arranged with the winding shaft 101, a support sleeve 302 is sleeved on the second support shaft 301, a spline groove is provided inside the winding shaft 101, a spline matching the spline groove on the inner wall of the winding shaft 101 is provided on the outer wall of the support sleeve 302, and the support sleeve 302 is matched with one end of the winding shaft 101 through a spline structure. The first support 201 has a plurality of springs 303 connected to it, and the springs 303 are connected to one end of the reel 101. The springs 303 are connected to one end of the reel 101 and the other end of the reel 101 is connected to the other end of the reel 101. The springs 303 are connected to one end of the reel 101 and the other end of the reel 101 is connected to the other end of the reel 101. The springs 303 are connected to one end of the reel 101 and the other end of the reel 101 is connected to the other end of the reel 101. Figure 5 As shown, a pawl installation opening is opened on one side of the front side of the first support 2, and a pawl 205 is connected to the pawl installation opening through a pin rod member, the inner end teeth of the pawl 205 cooperate with the tooth grooves of the ratchet 202, the inner end of the pawl 205 is connected to the inside of the first support 2 by a locking spring, and the outer end of the pawl 205 is connected to a pull handle 2051. Under the tight pressure of the locking spring on the inner end of the pawl 205, the inner end teeth of the pawl 205 cooperate with the tooth grooves of the ratchet 202, thereby playing a limiting role, and the inner end teeth of the pawl 205 can be disengaged from the tooth grooves of the ratchet 202 by pulling the pull handle 2051 downward.

[0026] Combination Figure 3 , Figure 5 and Figure 6As shown, the clutch member includes a first clutch seat 206 integrally formed on one side of the ratchet 202, and a second clutch seat 207 sleeved on the first support shaft 201, the first clutch seat 206 and the second clutch seat 207 are provided with matching oblique teeth on one side close to each other, the sleeve cap 203 is sleeved on the outside of the clutch member, and the second clutch seat 207 is provided with two tooth-shifting slots 2071 on one end away from the oblique teeth, and the inner wall of the sleeve cap 203 is provided with a tooth-shifting slot 2071 matching with the tooth-shifting slot 2071. The first support shaft 201 has a limit ring groove 2011 at a position corresponding to the sleeve cap 203, and the outer end of the sleeve cap 203 is provided with a special-shaped snap ring 2032, and the special-shaped snap ring 2032 is matched and clamped in the limit ring groove 2011, and the special-shaped snap ring 2032 presses the outer end of the sleeve cap 203 tightly to prevent the sleeve cap 203 from axial movement after being installed on the first support shaft 201; the working process of the clutch is as follows: (the clockwise and counterclockwise directions in the text are all compared Figure 3 , Figure 6 When the sunshade 102 is pulled downward for sunshade, the winding shaft 101 is pulled to rotate clockwise, and the winding shaft 101 drives the sleeve cap 203 to rotate through the spline structure. When the sleeve cap 203 rotates, the shifting tooth 2031 provided on the inner wall thereof shifts the shifting tooth slot 2071 on the second clutch seat 207 clockwise, thereby causing the axial movement of the oblique teeth engaged between the second clutch seat 207 and the first clutch seat 206 to disengage. At this time, the ratchet wheel 202 does not rotate, thereby avoiding the sound between the ratchet wheel 202 and the pawl 205, thereby achieving a silent effect; when the sunshade 102 is pulled downward for sunshade, the winding shaft 101 is pulled clockwise, and the sleeve cap 203 is driven to rotate through the spline structure. When the sleeve cap 203 rotates, the shifting tooth 2031 provided on the inner wall thereof shifts the shifting tooth slot 2071 on the second clutch seat 207 clockwise, thereby causing the axial movement of the oblique teeth engaged between the second clutch seat 207 and the first clutch seat 206 to disengage. At this time, the ratchet wheel 202 does not rotate, thereby avoiding the sound between the ratchet wheel 202 and the pawl 205, thereby achieving a silent effect; when the sunshade After 102 is pulled to the appropriate position, the torsion spring 303 gives the winding shaft 101 a tendency to rotate counterclockwise, so that the shifting tooth 2031 provided on the inner wall of the sleeve cap 203 shifts the second clutch seat 207 counterclockwise, and the oblique teeth between the second clutch seat 207 and the first clutch seat 206 are moved axially and engaged again, thereby completing the limiting operation; by pulling the pull handle 2051 downward, the inner end teeth of the pawl 205 are disengaged from the tooth grooves of the ratchet 202. At this time, the ratchet 202 is not restricted, and under the action of the torsion spring 303, the winding shaft 101 rotates counterclockwise, thereby winding up the sunshade 102.

[0027] like Figure 3 As shown, the inner end portion of the first support shaft 201 is a spline shaft portion, and the inner end of the first support shaft 201 is connected to a buffer mechanism 204 through a spline structure, and the other end of the buffer mechanism 204 is connected to a first support inner core 2041, and the outer wall of the first support inner core 2041 is provided with a spline that cooperates with the spline groove of the inner wall of the winding shaft 101. During the folding and unfolding process of the sunshade curtain 102, the buffer mechanism 204 plays a buffering role to reduce noise.

[0028] like Figure 2As shown, a lower support bar 1021 is fixed to the bottom edge of the sunshade curtain 102, and a pair of support rods 1022 are connected to one side of the sunshade curtain rolling box 1 and the lower support bar 1021. The support rods 1022 are symmetrically arranged "∑" folding rod frames. In the process of pulling down the sunshade curtain 102, the support rods 1022 are unfolded, thereby playing a supporting role for the sunshade curtain 102. When the sunshade curtain 102 is retracted, the support rods 1022 are folded back again, and the supporting structure is compact.

[0029] Embodiment 1:

[0030] Figure 7 and Figure 8 The structure shown is another structural expression example of the utility model: the structural change is that the torsion spring 303 and the buffer mechanism 204 are interchanged, the inner end of the first support shaft 201 is connected to the torsion spring 303, and the other end of the torsion spring 303 is connected to the second support inner core 3011, the torsion spring 303 provides the power for winding the winding shaft 101, and the outer sleeve of the torsion spring 303 is provided with a sheath 3031, and the sheath 3031 is inserted in the winding shaft 101 to protect the torsion spring 303 and prevent the torsion spring 303 from causing wear to the inside of the winding shaft 101 when the torsion spring 3031 is twisted, and the second support shaft 301 is connected to the buffer mechanism 204, and the other end of the buffer mechanism 204 is connected to the first support inner core 2041, and the outer wall of the first support inner core 2041 is provided with a spline that cooperates with the spline groove of the inner wall of the winding shaft 101. During the folding and unfolding process of the sunshade 102, the buffer mechanism 204 plays a buffering role to reduce noise.

[0031] Embodiment 2:

[0032] Fig. 9 The structure shown is another structural embodiment of the ratchet engagement and limiting of the utility model: the structural change is that the ratchet front pawl structure is replaced by the ratchet lower pawl structure, a frame-type clamping tooth 208 is provided inside the first support 2, the frame-type clamping tooth 208 is matched with the outside of the ratchet 202, and the frame-type clamping tooth 208 is provided with a clamping tooth that matches the tooth groove of the ratchet 202, a guide column 2081 is provided at the bottom of the frame-type clamping tooth 208, and the guide column 2081 vertically penetrates along the bottom of the first support 2, a compression spring is provided between the bottom of the frame-type clamping tooth 208 and the bottom of the first support 2, and a cable 2082 is connected to the bottom end of the guide column 2081. Under the action of the compression spring on the bottom of the frame-type clamping tooth 208, the clamping teeth of the frame-type clamping tooth 208 are matched with the tooth groove of the ratchet 202, thereby playing a limiting role, and the clamping teeth inside the frame-type clamping tooth 208 can be disengaged from the tooth groove of the ratchet 202 by pulling the cable 2082 downward.

[0033] Embodiment 3:

[0034] Fig.10The structure shown is another structural expression example of the utility model for guiding and supporting the sunshade curtain 102: the bottom of the first support 2 and the second support 3 are fixedly connected with a vertically downward guide rod 4, and the bottom edge of the sunshade curtain 102 is fixed with a horizontal bar 103, and both ends of the horizontal bar 103 are provided with guide ring sleeves 1031, and the guide ring sleeves 1031 at both ends of the horizontal bar 103 are respectively slidably connected with the corresponding guide rods 4, so as to guide and support the sunshade curtain 102 during the rolling process of the sunshade curtain 102.

[0035] The ratchet, pawl or clutch mechanism of the above three examples can be interchanged in direction, and the working principle is the opposite direction: the original clockwise is changed to counterclockwise, that is, the left and right directions can achieve the silent effect of the clutch operation.

[0036] The working process of the utility model is as follows: when the sunshade 102 is pulled downward for sunshade, the winding shaft 101 is pulled to rotate clockwise, and the winding shaft 101 drives the sleeve cap 203 to rotate through the spline structure. When the sleeve cap 203 rotates, the shifting tooth 2031 provided on the inner wall thereof shifts the shifting tooth slot 2071 on the second clutch seat 207 clockwise, thereby causing the axial movement of the oblique teeth engaged between the second clutch seat 207 and the first clutch seat 206 to disengage. At this time, the ratchet wheel 202 does not rotate, thereby avoiding the sound between the ratchet wheel 202 and the pawl 205, thereby achieving a silent effect; when the After the winding shaft 101 is pulled to the appropriate position, the torsion spring 303 gives the winding shaft 101 a tendency to rotate counterclockwise, so that the shifting tooth 2031 provided on the inner wall of the sleeve cap 203 shifts the second clutch seat 207 counterclockwise, and the oblique teeth between the second clutch seat 207 and the first clutch seat 206 are moved axially and engaged again, thereby completing the limiting operation, and by pulling the pull handle 2051 downward, the inner end teeth of the pawl 205 are disengaged from the tooth grooves of the ratchet 202. At this time, the ratchet 202 is not restricted, and under the action of the torsion spring 303, the winding shaft 101 rotates counterclockwise, thereby winding up the sunshade 102.

[0037] The above are only preferred embodiments of the present invention and do not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, may make any equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which shall be deemed as the content of the technical solution of the present invention and still fall within the protection scope of the present invention.

Claims

1. A clutch silent automobile sunshade, comprising a sunshade winding box (1), characterized in that: The sunshade curtain reel box (1) is provided with a reeling shaft (101) inside, and a sunshade curtain (102) is wound on the reeling shaft (101); one end of the sunshade curtain reel box (1) is connected to a first support (2) by bolts, and the other end of the sunshade curtain reel box (1) is connected to a second support (3) by bolts; a clutch mute component is provided inside the first support (2) and is connected to one end of the reeling shaft (101); and a clutch mute component is provided inside the second support (3) and is coaxial with the reeling shaft (101). A second support shaft (301) is disposed on the second support shaft (301), a support sleeve (302) is sleeved on the second support shaft (301), a spline groove is arranged inside the winding shaft (101), a spline is arranged on the outer wall of the support sleeve (302) and matches with the spline groove on the inner wall of the winding shaft (101), and the support sleeve (302) is inserted into and matched with one end of the winding shaft (101) through the spline structure, the inner end of the second support shaft (301) is connected to a torsion spring (303), and the other end of the torsion spring (303) is connected to a second The second support inner core (3011) is provided with a spline on its outer wall that matches with the spline groove on the inner wall of the winding shaft (101); the first support (2) is provided with a first support shaft (201) coaxially arranged with the winding shaft (101); the clutch silent assembly comprises a ratchet (202) sleeved and connected to the first support shaft (201); the ratchet (202) is connected with a sleeve cap (203) via a clutch; the sleeve cap (203) is provided with a spline on its outer wall that matches with the winding shaft (101); The spline groove of the inner wall is matched with the spline, and the sleeve cap (203) is inserted into and matched with one end of the winding shaft (101) through the spline structure. A pawl mounting opening is opened on the front side of the first support (2), and a pawl (205) is connected to the pawl mounting opening through a pin rod. The inner end teeth of the pawl (205) are matched with the tooth grooves of the ratchet wheel (202). The inner end of the pawl (205) is connected to the inside of the first support (2) with a locking compression spring, and the outer end of the pawl (205) is connected to a pull handle (2051).

2. The clutch silent car sunshade according to claim 1, characterized in that: The clutch member comprises a first clutch seat (206) integrally formed on one side of the ratchet wheel (202), and a second clutch seat (207) sleeved on the first support shaft (201); the first clutch seat (206) and the second clutch seat (207) are provided with matching oblique teeth on the side close to each other; the sleeve cap (203) is sleeved on the outside of the clutch member; the second clutch seat (207) is provided with two shifting tooth slots (2071) at one end away from the oblique teeth; and the inner wall of the sleeve cap (203) is provided with shifting teeth (2031) matching with the shifting tooth slots (2071).

3. The clutch silent car sunshade according to claim 2, characterized in that: A limiting ring groove (2011) is provided on the first support shaft (201) at a position corresponding to the sleeve cap (203); a special-shaped snap ring (2032) is provided at the outer end of the sleeve cap (203); the special-shaped snap ring (2032) is fitted and clamped in the limiting ring groove (2011); and the special-shaped snap ring (2032) tightly presses the outer end of the sleeve cap (203).

4. The clutch silent car sunshade according to claim 1, characterized in that: The first support shaft (201) is provided with a buffer mechanism (204) at its inner end via a spline structure, and the other end of the buffer mechanism (204) is connected to a first support inner core (2041). The outer wall of the first support inner core (2041) is provided with a spline that cooperates with a spline groove on the inner wall of the winding shaft (101).

5. The clutch silent car sunshade according to claim 1, characterized in that: A lower support bar (1021) is fixed to the bottom edge of the sunshade (102); a pair of support rods (1022) are connected to one side of the sunshade reel box (1) and the lower support bar (1021); the support rods (1022) are symmetrically arranged "∑" folding rod frames or round guide rods on both sides.

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