High-strength synchronizer gear sleeve

Abstract

The utility model provides a high-strength synchronizer gear sleeve, and belongs to the technical field of gears. The high-strength synchronizer gear sleeve comprises an outer gear sleeve and an inner gear ring. A shifting fork ring groove is formed in the outer side wall of the outer gear sleeve, a plurality of sections of continuous gear sleeve teeth are evenly formed on the inner side wall of the outer gear sleeve in the circumferential direction, and a plurality of inter-tooth fixing seats are arranged between every two sections of the gear sleeve teeth in the circumferential direction at intervals. A plurality of sections of continuous gear ring teeth are evenly formed on the outer side wall of the inner gear ring in the circumferential direction, fixing seat grooves are formed in the positions, between every two sections of the gear ring teeth, of the inner gear ring at intervals, the number of the fixing seat grooves and the number of the inter-tooth fixing seats are correspondingly consistent, and the fixing seat grooves and the inter-tooth fixing seats are installed and positioned in a matched mode. And fastening clamping strips are clamped in the clamping strip mounting grooves in a matched mode, and the teeth of the gear ring and the teeth of the gear sleeve are extruded and meshed through the fastening clamping strips. The synchronizer gear sleeve has the advantages that the structural strength and the connecting strength of the synchronizer gear sleeve are improved, the synchronizer gear sleeve is not prone to damage and vibration, and the service life is longer.

Description

Technical Field

[0001] This utility model belongs to the field of gear technology, and specifically relates to a high-strength synchronizer gear sleeve. Background Technology

[0002] A gearbox synchronizer is a mechanical device used to ensure smooth gear engagement during gear shifting, preventing shock and damage. The synchronizer achieves this by ensuring the gears to engage rotate at the same speed, thus facilitating a smooth shift.

[0003] Patent application CN201510489549.6 discloses a synchronizer gear integrated device with reverse function, including a transmission output shaft and an improved synchronizer gear, a synchronizer sleeve, a synchronizer ring, and an improved engagement tooth arranged sequentially thereon. The hub portion of the improved synchronizer gear meshes with the synchronizer sleeve on the output shaft, and the spline portion of the improved engagement tooth meshes with the synchronizer ring on the output shaft. A synchronizer slider is provided between the synchronizer sleeve and the hub portion. The sleeve in this patent only meshes with other gear structures, resulting in relatively low structural and connection strength. Since the sleeve in the transmission needs to connect with the shift fork, it is susceptible to impact during gear shifting. Therefore, high requirements are placed on the structure and connection strength of the synchronizer gear sleeve. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a high-strength synchronizer gear sleeve.

[0005] The purpose of this utility model can be achieved through the following technical solution: a high-strength synchronizer gear sleeve, including an outer gear sleeve and an inner gear ring; the outer gear sleeve is generally in the form of a ring structure, and a shift fork ring groove is opened on its outer ring side wall. Several continuous gear sleeve teeth are uniformly formed circumferentially on the inner side wall. Several inter-tooth fixing seats are circumferentially spaced between each segment of the gear sleeve teeth. The inter-tooth fixing seats are in the form of a box structure with the opening facing the center of the ring.

[0006] The internal gear ring is an overall ring structure with a drive shaft hole at its center. The sidewall of the drive shaft hole is uniformly formed with continuous shaft drive teeth that cooperate with the drive shaft. The outer sidewall of the internal gear ring is uniformly formed with several continuous gear ring segments. Each segment of the gear ring is spaced apart by a fixing seat groove on the internal gear ring. The number of fixing seat grooves corresponds to the number of fixing seats between the teeth and they cooperate with each other for installation and positioning. The top and bottom sides of the internal gear ring are recessed towards the center to form a retaining strip mounting groove. A fastening retaining strip is fitted into the retaining strip mounting groove, and the fastening retaining strip squeezes and engages the gear ring teeth with the gear sleeve teeth.

[0007] In the high-strength synchronizer gear sleeve, the tooth sleeve teeth of the outer sleeve are provided with heat dissipation grooves at the middle section of the strip-shaped tooth top, and all the heat dissipation grooves jointly form a heat dissipation channel between the outer sleeve and the inner tooth ring.

[0008] In the high-strength synchronizer gear sleeve, the number of the inter-tooth fixing seats is not less than two, preferably three, and the number of the fixing seat grooves provided on the inner tooth ring is consistent with the number of the inter-tooth fixing seats.

[0009] In the high-strength synchronizer gear sleeve, the fastening clamping strip is in a C-shaped structure as a whole, and is provided with a clamping strip bent opening at one end, which is inserted into the box-shaped opening of the inter-tooth fixing seat to fix and limit during installation.

[0010] Compared with the prior art, the high-strength synchronizer gear sleeve provided by the utility model improves the structural strength of the synchronizer gear sleeve through the mutual meshing and nesting of the outer sleeve and the inner tooth ring, and improves the bonding strength of the synchronizer gear sleeve through the extrusion and meshing of the two by the fastening clamping strip, so that the synchronizer gear sleeve has higher connection strength, is not easy to be damaged and vibrate, and has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a structural schematic view of the high-strength synchronizer gear sleeve;

[0012] Fig. 2 is an exploded view of the high-strength synchronizer gear sleeve;

[0013] In the above figure, 100 is an outer sleeve, 110 is a yoke ring groove, 120 is a tooth sleeve tooth, 121 is a heat dissipation groove, 130 is an inter-tooth fixing seat, 200 is an inner tooth ring, 210 is a transmission shaft hole, 211 is a shaft transmission tooth, 220 is a tooth ring tooth, 230 is a fixing seat groove, 240 is a clamping strip installation groove, 250 is a fastening clamping strip, and 251 is a clamping strip bent opening. DETAILED DESCRIPTION

[0014] The following is a specific embodiment of the utility model and a further description of the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0015] As shown in Figs. 1-2 The high-strength synchronizer gear sleeve comprises an outer sleeve 100 and an inner tooth ring 200, the outer sleeve 100 and the inner tooth ring 200 are nested and meshed with each other to improve the overall structural strength of the synchronizer gear sleeve, so that the synchronizer gear sleeve is not easy to be damaged, is convenient to disassemble, repair and maintain, and has a longer service life.

[0016] As shown in Fig. 2As shown, the outer tooth sleeve 100 is in a whole annular structure, and a shift yoke ring groove 110 is formed on the annular outer side wall, which is used for matching connection with the gear box shift yoke. The inner side wall of the outer tooth sleeve 100 is uniformly formed with a plurality of continuous tooth sleeve teeth 120, and a plurality of tooth interval fixing seats 130 are arranged between each section of the tooth sleeve teeth 120 in the circumferential direction, and the number of the tooth interval fixing seats 130 should be not less than two, preferably three, which plays a role of fixing and positioning.

[0017] The tooth interval fixing seat 130 is in a box structure with the opening facing the center of the ring, and the tooth sleeve teeth 120 of the outer tooth sleeve 100 are all formed with heat dissipation grooves 121 at the middle section of the strip-shaped tooth top, and all the heat dissipation grooves 121 jointly form a heat dissipation channel between the outer tooth sleeve 100 and the inner tooth ring 200, and on the other hand, the heat dissipation grooves 121 can also be used as a lubricating oil channel between the outer tooth sleeve 100 and the inner tooth ring 200.

[0018] The inner tooth ring 200 is in a whole annular structure, and a transmission shaft hole 210 is formed in the center, and the hole side wall of the transmission shaft hole 210 is uniformly formed with continuous shaft transmission teeth 211 matched with the transmission shaft. The outer side wall of the inner tooth ring 200 is uniformly formed with a plurality of continuous tooth ring teeth 220, and a fixing seat groove 230 is arranged between each section of the tooth ring teeth 220 on the inner tooth ring 200, and the number of the fixing seat groove 230 is consistent with the number of the tooth interval fixing seat 130 and is matched and positioned.

[0019] The top and bottom sides of the inner tooth ring 200 are both sunk to the center to form a clamping strip mounting groove 240, and a fastening clamping strip 250 is clamped in the clamping strip mounting groove 240, and the fastening clamping strip 250 is in a whole C-shaped structure, and a clamping strip bent opening 251 is formed at one end of the fastening clamping strip 250, and the clamping strip bent opening 251 is inserted into the box-shaped opening of the tooth interval fixing seat 130 when the fastening clamping strip 250 is installed to be fixed and limited, and the fastening clamping strip 250 extrudes and engages the tooth ring teeth 220 and the tooth sleeve teeth 120, thereby improving the connection strength between the outer tooth sleeve 100 and the inner tooth ring 200, avoiding relative displacement between the two, reducing vibration when the synchronizer is running and is impacted, and reducing operation noise.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0021] Although various terms are used herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A high-strength synchronizer gear sleeve, comprising an outer gear sleeve (100) and an inner gear ring (200); characterized in that, The outer tooth sleeve (100) is generally in the form of a ring structure. A fork ring groove (110) is provided on its outer ring side wall. Several continuous tooth sleeve teeth (120) are evenly formed on the inner side wall. Several tooth fixing seats (130) are circumferentially spaced between each tooth sleeve tooth (120). The tooth fixing seats (130) are box-shaped structures with the opening facing the center of the ring. The internal gear ring (200) is an overall ring structure with a drive shaft hole (210) at its center. The sidewall of the drive shaft hole (210) is uniformly formed with continuous shaft drive teeth (211) that cooperate with the drive shaft. The outer sidewall of the internal gear ring (200) is uniformly formed with several segments of continuous gear ring teeth (220). Each segment of the gear ring teeth (220) is spaced apart on the internal gear ring (200) with a fixed seat groove (230). The fixed seat grooves (230) and the inter-tooth fixed seats (130) are of the same number and cooperate with each other for installation and positioning. The top and bottom sides of the internal gear ring (200) are recessed towards the center to form a retaining strip mounting groove (240). A fastening retaining strip (250) is fitted in the retaining strip mounting groove (240) and the fastening retaining strip (250) squeezes and meshes the gear ring teeth (220) with the gear sleeve teeth (120).

2. The high-strength synchronizer gear sleeve according to claim 1, characterized in that, The outer toothed sleeve (100) has heat dissipation grooves (121) at the middle section of the tooth tip of the toothed sleeve (120). All the heat dissipation grooves (121) together form a heat dissipation channel between the outer toothed sleeve (100) and the inner toothed ring (200).

3. The high-strength synchronizer gear sleeve according to claim 1, characterized in that, The number of inter-tooth fixing seats (130) should be no less than two, and the number of fixing seat slots (230) opened on the internal tooth ring (200) should be consistent with the number of inter-tooth fixing seats (130).

4. The high-strength synchronizer gear sleeve according to claim 1, characterized in that, The fastening strip (250) has a C-shaped structure, with a strip bend (251) at one end. When the fastening strip (250) is installed, the strip bend (251) extends into the box-shaped opening of the tooth fixing seat (130) for fixing and limiting.

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